Moscow builds a new city A distributor of electricity is ... - Hilti

The magazine
of the Hilti Group
1/2007
Moscow builds a new city
A distributor of electricity is redefining fire protection
The hammer: like drilling in butter
Reinforcing flat decks, avoiding catastrophes

Contents
Page 2
Worldwide
4 Greenland: the rotary hammer is finally purring
4 France: 400 holes per hour
5 Germany: biodiesel plants in demand
5 Switzerland: a test of nerves amid the mountains
A US electricity distributor is sealing cable
10penetrations and redefining fire prevention.
Company
6 Transition at the top: goodbye and hello
8 An honor for three men
9 Corporate strategy: the continuation of the three Cs
9 Twelve design awards for products and the toolbox
Construction
10 Fire protection: handing 12,000 volts
Focus on Russia
14 Moscow builds a new city
Innovation
22 Like drilling in butter
In Moscow the hectic pace of high-rise building has
14broken out. 15 skyscrapers will get things started.
Engineering
24 Reinforcing flat decks
Innovation
28 Corded saws are redundant!
29 New Hilti patent
29 A fine touch
30 Combilaser: one for all
30 Comfortable work
31 The hammer
31 The masonry connection
Successful testing: Hilti engineers develop a
24method for reinforcing flat decks.
Impressum
Publisher: Hilti Corporation,
Corporate Communications,
Postbox 333, FL-9494 Schaan,
Principality of Liechtenstein
Editor-in-chief: Ursula Trunz,
phone: +423 234 26 30,
ursula.trunz@hilti.com
Distribution: Tamara Eberle,
tamara.eberle@hilti.com
Layout / design: milano-graphic,
CH-8640 Rapperswil, Switzerland
Composition / lithos / printing: Buchs
Medien AG, CH-9471 Buchs, Switzerland
Publication frequency: twice a year
Circulation: 36,000 (17,000 English,
10,500 German, 3,000 Spanish,
2,500 French, 2,000 Japanese,
1,000 Italian)
Cover photo: Moscow City, Moscow,
Russia (Photo: Hilti)
The Magazine is also available
in electronic form under
www.hilti.com/magazine
The articles published in this magazine
may be regarded as official statements
by the Executive Board only when expressly
marked as such. In the event of
differing interpretation, the original text
shall apply.
Hilti is a registered trademark of the
Hilti Corporation.
© Hilti Corporation, July 2007

Magazine 1/2007
Editorial
Page 3
Change amid
growth
Things come to an end even in
professional life. We consciously
say this at Hilti and, with
an eye on the future, promote upand-coming
colleagues, allowing
them to prepare for challenging
work early on. Taking the long
view, we feel that this helps to ensure
the subsequent development
of our company.
At the beginning of this year I assumed
the post of Chairman of the
Board of Directors from Michael
Hilti, the son of company founder
Martin Hilti, and handed the reins
of my office, Chief Executive Officer,
to my successor Bo Risberg
after 13 fascinating and fulfilling
years. As a sign of this smooth
transition that was carefully introduced
according to plan, we’re
writing this editorial jointly.
The enthusiasm with which you
embrace our products and services,
our innovations that we develop
for you, and our greatly-expanded
sales force, give me more
optimism than ever. I want to thank
you for the loyalty that you show
our company.
Optimism is contagious! Ba -
sed on our very solid economic
foundation and thanks to
our committed employees, we all
have a chance to further strengthen
and expand our position within the
market. We also created the strategic
foundation to do so last year:
we will continue to follow our
Champion 3C corporate strategy,
that has focused on Customer,
Competence and Concentration
since 1996, and are also focusing
on growth in addition to other
strategic priorities. In the last year
alone we created more than 1400
new positions, about 1100 of those
in sales. Around the globe there are
more than 18,000 people working
for you.
Differentiation is just as important
to us as growth. By remaining a
step ahead through the products
and services that we offer you, we
provide you with unique added
value that reflects greater performance
and reliability. You as the customer
are the first to profit from
the strength of our innovation!
Pius Baschera
Chairman of the Board of Directors
Bo Risberg
Chief Executive Officer

Wordwide
Page 4
The rotary hammer
is finally purring
meter and, sometimes, centimeter
for centimeter,” say Andrea Fichtner
and Christoph Hainz. “Our
bodies are wet and cold but they
are once again at operating temperature.
But once we stop moving
forward we again begin to freeze.”
Happy and the first ones atop the granite peak: from left
Christoph Hainz, Roger Schäli and Andrea Fichtner.
A lonesome, nameless chunk of granite in
Greenland, three people and one rotary
hammer. The story of a spectacular and
demanding first ascent.
In the far, far north, summer
nights are generally light. But
now heavy clouds and thick fog are
hanging over Greenland and it’s
raining without interruption. In
spite of this Andrea Fichtner, from
Germany, Christoph Hainz, from
Italy, and Roger Schäli, from
Switzerland, have sought refuge in
the wall of this nameless mountain.
The only thing that can be heard in
the dark is the clinking of snap
hooks. Roger Schäli is fighting up
a wet crevasse while Andrea Fichtner
and Christoph Hainz are literally
hanging around, freezing and
waiting until they can climb again.
Finally the rotary hammer begins
to purr. “Stand,” says Roger Schäli.
“We work ahead quickly, meter for
The stand locations are outfitted
with two spring hooks each. And
after a total of 16 rope lengths the
trio are at the top and in the sun.
“We could only gauge our luck
after an hour of deep sleep in the
warming rays of the sun,” wrote the
extreme climbers. “Asta nunaat” is
the name given the mountain,
meaning “white granite of the
best quality.” The route for this
first ascent receives the Italian
name Tartaruga, or tortoise.
400 holes an hour
Hilti France gets an assist for helping set a record.
A single worker can drill 400 holes in one hour. Innovative
engineers from the special developments
unit have designed and developed a system that
drills four holes at the same time. This enhances
efficiency and, in a positive ancillary effect, saves
consumables.
The story began on the day
that the French company
Satras came to Hilti with a special
request. Satras specializes in the
repair of concrete construction
and, as a result, in the injection of
synthetic mortars and cement
masses. A particular project required
that 400,000 holes be
drilled into a floor. In a joint discussion
with the Hilti professionals
the idea of the four-hole drilling
system was born.
The result: the number of holes
drilled per hour and worker quintupled
thanks to the system. The
time of doing this type of hard
work on the knees is also over.
And instead of the 1000 rotary
hammers that customer thought
they would need, they now only
require 250. The system can be
outfitted with a number of various
Hilti rotary hammers and is
suitable for the repair of floors in
industrial operations, warehouses
and supermarkets.
Four-hole drilling system with the
Hilti TE 16. Pure efficiency.

Magazine 1/2007
Worldwide
Page 5
Biodiesel plants
in demand
“This installation system allows us to flexibly implement small changes,” says specialist project manager Armin Bredel (middle photo).
Increasing ecological considerations have generated
a demand for alternative fuels. To meet this
demand, Lurgi is quickly building new biodiesel
plants worldwide. The market leader in plant construction
and process engineering is using the
Hilti MI and MQ installation systems.
Asmall portion of nerves is
part of a splendid view. This
may very well have been what the
head of Formula 1, Bernie Ecclestone,
was thinking. He’s one of the
new owners of the glacial ski area
“Glacier 3000” that is situated between
Gstaad and Les Diablerets in
Switzerland. A total of 118 million
Swiss francs have been invested,
some 12 million francs of that in artificial
snow. A toboggan run has
been created at an elevation of
Lurgi, a technology company
operating worldwide and
based in Frankfurt am Main, Germany,
has built the most biodiesel
plants in the last few years – in Germany,
France and Spain as well as
in Argentina, Malaysia, Indonesia
and Australia. Demand remains
high and the timeframe correspondingly
tight. This requires efficient
planning, processing and installation.
Lurgi can count on Hilti
in all these phases.
Plant Design System (PDS) software,
from software developer Intergraph,
is used to plan the
biodiesel plants along with the pipe
support tool that was developed at
the request of Hilti. Lurgi engineers
construct a plant in the form of a 3D
model, including all the required
about 3000 meters (9842 ft) above
sea level, that can be operated in either
winter or summer. For the exact
alignment of construction, with
wind velocities of up to 80 kilometers
per hour (50 mi), temperatures
of -10°C and more than a meter
of powder snow, the Hilti PR 25
rotating laser was called for. The
toboggan course runs a length of
800 meters (2952 ft) and has a
height difference of 200 meters
(738 ft).
components, up to the pipes and
supports, and the correct dimensions.
The software allows for controls
to ensure that the supports do
not intersect with other plant components,
increasing planning quality.
By linking the planning software
and the Lurgi materials management
system, where all required
Hilti products are listed, all components
needed can be ordered at the
touch of a button.
The efficiency of the planning continues
at the construction site.
“The Hilti installation systems
allow our installers to make little
adjustments without a great deal of
The assembly takes place at temperatures below zero.
effort,” says Armin Bredel, specialist
project manager for bio -
diesel plants in Enns, Austria.
“This helps us to meet the deadlines
as the construction progresses.”
The international Hilti
service network is just as important
for worldwide cooperation
as proximity to the customers. “We
appreciate the short delivery periods
for badly-needed parts and
consulting on location,” says Bülent
Atik, site engineer for the
biodiesel plant at the Höchst industrial
park near Frankfurt am
Main.
A test of nerves in the mountains

Company
Page 6
Bo Risberg (left) has been CEO since January 1. Marco Meyrat (second from left)
has been in the Executive Board since the beginning of 2005. Christoph Loos (third from left)
and Stefan Nöken (right) joined the Executive Board on January 1

Magazine 1/2007
Company
Page 7
The Hilti Group underwent the largest shift in upper management in
13 years at the beginning of 2007. Michael Hilti, previously Chairman
of the Board of Directors, handed this office to Pius Baschera, the
former Chief Executive Officer, as of January 1 and now serves as a
board member. Bo Risberg, until now a member of the Executive
Board, was named the new Chief Executive Officer. His former position
in the Executive Board was filled by Stefan Nöken. Christoph Loos
also joined the Executive Board in January 2007, replacing Egbert Appel
who was named a Trustee of the Martin Hilti Family Trust. Bo Risberg,
Christoph Loos and Stefan Nöken, together with existing Executive
Board member Marco Meyrat, form the new Executive Board.
Goodbye
and hello
Pius Baschera’s statement is
surprising: “From our point
of view the transition was nothing
revolutionary.” The transition was
announced in 2005 and all participants
carefully prepared for their
new positions in 2006 as the shift
began. “Perhaps,” Pius Baschera
continues, “the spectacular is simply
the smoothness of this transition,
which was long in the planning,
and that it went off without a
hitch.”
Continuity at the Hilti Group, as
mentioned repeatedly by both Michael
Hilti and Pius Baschera, is
not based on individual names but
on the transfer of knowledge and
on promoting colleagues who then
grow into their demanding positions.
It's really about the development
of the employee and, thereby,
the company. “So we said goodbye
to one function and hello to ano -
ther,” resumed Pius Baschera. His
successor, Bo Risberg, and his
Executive Board colleagues Christoph
Loos, Marco Meyrat and Stefan
Nöken, have known the company
for years, and know it well
through the various positions they
have held. And - even more importantly
- they live out the corporate
culture. From their point of view
it's the basis for success.
Turn the page and read how the
change in the Executive Management
moved hundreds and thousands
of people.
Bo Risberg
Bo Risberg (born 1956 in Sweden)
has been CEO since 1 January
2007. His predecessor in office,
Pius Baschera, became Chairman
of the Board of Directors, effective
on the same date.
Bo Risberg trained as a mechanical
engineer in Canada and earned
a Master of Business Administration
in Switzerland. He came to
Hilti in 1999 as Head of the Business
Unit Drilling and Demolition.
From 2001 to 2006, as a member
of the Executive Board, he was responsible
for the business areas,
for the supply chain (comprising
production, sourcing and logistics)
and for new business & technology.
Since fall 2006 Risberg has
served as President of the European
Power Tool Association
(EPTA).

Company
Page 8
An honor for
three men
They came from the four corners of the world.
From every country where Hilti operates. Many of
them had never been to Europe before. Hundreds
of them came to the Swiss Alpine village of Davos
to honor three men: Michael Hilti, Pius Baschera
and Egbert Appel.
None of the three men realized
the logistical and organizational
levers they set in motion
months before. The newly constituted
Executive Board, consisting
of Bo Risberg, Marco Meyrat,
Christoph Loos and Stefan Nöken,
had initiated a huge surprise party
for their departing colleagues. After
13 years these men were leaving
one position at the end of 2006
to take up another one at the beginning
of 2007 (read more in
the article Goodbye and hello on
page 7).
More than 750 hands swung red
light sticks in the dark of the Davos
Convention Center’s main hall as
the three men, amazed and speechless,
were led onto the stage. The
moment was inspiring and moving
– for everyone. As Michael Hilti,
Pius Baschera and Egbert Appel
were honored with both humorous
and poignant speeches, some participants
were daubing at their
eyes. Then Michael Hilti, speaking
not only of those employees present
in the hall, spoke one sentence
that put everything into perspective.
“You make my life worthwhile.”
A moving scene.
750 red sticks shine
on the three men
from the dark hall.
The new Executive
Board, dressed
in dark clothes,
arranged this tribute.
Strong emotions, friendly encounters.
Pius Baschera, Michael Hilti and Egbert Appel
clearly enjoyed the evening.

Magazine 1/2007
Company
Page 9
Strategy: the
three Cs continue
Three Cs lead Hilti employees through their professional
life and to strategically-solid deeds. The
Hilti Group has been oriented on the Champion
3C corporate strategy since 1996 – and will continue
to be in the future.
The customer comes first –
without exception. That is
what the first C stands for. Hilti
provides its customers with unique
competency – the source of the
second C. The products, systems
and services offered to the customers
are distinguished by path
breaking innovation and total quality.
The third C stands for concentration
on markets and products
where Hilti can achieve and sustain
leadership positions.
While staff worked toward their immediate
operational goals in 2006,
the Hilti Group’s Executive Board
and Executive Management Team
were preparing for the next strategic
period, to stretch into 2015.
At the International Strategy Forum
in Davos, which brought together
some 150 members of upper management
from around the world in
November 2006 (and where the surprise
party took place – see “An
honor for three men”) the third
phase of the corporate strategy was
inaugurated: Hilti will continue on
its growth path, profiling itself even
more distinctly by means of its
products and services, increasing
productivity further in all areas
while at the same time making its
employees and their development
its main priority. Bo Risberg, setting
the tone for his work as Chief
Executive Officer, said: “Our core
competency remains the same as
ever: providing innovative solutions,
developed with the help of
our practical expertise and direct
customer relations. This will continue
to form the basis of our business
model.”
Twelve design awards
Design awards are raining down on Hilti products
and the Hilti toolbox. Corporate Chief Designer
Stephan Niehaus accepted 12 awards. More than
any other company in the branch. Design gives
Hilti products the added value of an unmistakable
face.
Aperson needs no more than
ten seconds to make a decision.
They make this decision with
their senses. How does the grip feel
on a particular tool? How does a
switch sound when it’s thrown? It
takes a matter of seconds to generate
sustainable product enthusiasm
in a customer. “This is why we do
everything we can to ensure that
the customer can actually see, feel
and hear the quality and durability
of our tools,” says Corporate Chief
Designer Stephan Niehaus. Design
is the means to express the added
value of Hilti tools without using
words.
It’s about much more than mere superficial
beauty. It must come from
within, and externally express the
advantages found inside a tool. The
international jury of experts for
the iF product design award in
Hanover, Germany, therefore bestowed
four awards on Hilti at
the beginning of March: for the
TE 106 breaker, TE 7-C rotary
hammer, two polygon chisels and
for the new toolbox.
The international expert jury for
the red dot awards, given by the
Design Zentrum Nordrhein Westfalen,
gave Hilti eight awards. The
jury gave the TE 7-C rotary hammer
the red dot award: best of the
best for the tool’s “outstanding design
qualities.” The toolbox also
scored points here as the three-dimensional
symbol for the Hilti
brand. In addition to the twin
award winning TE 106 and polygon
chisel, red dot awards were
given to the SID/SIW 144-A tangential
impact screwdriver, the
WSC 70-A36 cordless hand-held
circular saw, the TE 7-A cordless
rotary hammer and the PX 10
transpointer.
The iF design award of the Inter -
national Forum Design in Hanover
and the Design Zentrum Nordrhein
Westfalen’s red dot award are
among the most coveted and
renown design prizes in the world.
Some 2000 products from roughly
40 countries are submitted annually
for the iF product design awards
alone.

Construction
Page 10
Handling 12,
ComEd, an electric transmission and distribution company in the United
States, is currently engaged in a major substation fire protection program.
An important piece of this program is installing Hilti firestop products in cable
penetrations at many of its larger substations. Seen as a proactive
step, installing firestops will limit fire or smoke damage to a controlled
area, which in turn improves reliability by minimizing potential outages times.
by Manfred Schiefer (text) and Dan White (photos)
Entering the substation, the
lights are turned on and the
neon tubes give off a ghostly, pale
light along the long row of dull,
gray-colored switchgear cabinets.
The first floor holds switching
equipment and the basement, also
called a cable space, contains power
and control cables. At the desk station
electrical maps, a phone, and
various phone numbers are found.
One of the numbers is for ComEd’s
control center. Jim Ford, LTT General
Manager Specialty Construction
Division, goes to the phone and

Magazine 1/2007
Construction
Page 11
000 volts
dials this number to reports our visit
to the ComEd office because they
must be notified who is entering, the
purpose, and duration.
Next, the team gathers for a job
safety briefing. It is important that
everyone knows who is doing what,
what the critical steps are and what
safety-relevant issues they should
be thinking about. Because we will
be working in the cable space, we
discuss confined space entry and
emergency exit procedures. After
the briefing, the hatches are opened,
air quality is monitored, and the air
and rescue equipment is put in
place.
“Down in the hole, Bill,“ says
David, as he steps onto the rung of
a ladder and looks up once again.
He wants to make certain that Bill
knows he’s going down. “Going
down, Bill,” follows Tom, who
briefly looks up before descending
into the hole. “Going down:” one
after another, the workers descend
Descending into a substation with special equipment.

Construction
Page 12
John R. Bettler,
head of the
Fire Protection
Engineering
Group at ComEd:
“Effective fire
protection is like
insurance for us.”
into the lower regions of the electrical
substation until all but one is
in the basement. Bill has to stay
above ground to record who enters
and exits, observe the air meters
and, in case of an emergency, call
for help.
Safety first
Once down in the cable space,
you realize the difficulties in applying
firestops in a substation and
why ComEd demands the incredible
attention to safety. The basement
is filled with cables. From
every wall of the station’s basement,
power cables energized at
12,000 volts enter the station and
rise up through core-drilled holes
into the switchgear upstairs. Also,
control cable pans hang from the
ceiling, carrying hundred of cables
used for metering, power and control
of the electric equipment.
In addition to the cables, the ceiling
is low and the floor is constructed
of tamped gravel. “A lot of times
the basement is below the ground
water level,” says Jim Ford, “The
power lines enter the substation
through the basement walls, so the
buildings are never completely watertight.”
This can make the work
areas slippery.
All of the penetrations from the
basement to the first floor need to
be sealed. The firestop material is
installed from the cablespace to
Complacency
is the greatest risk.
Andy Grein of
ComEd and Jim Ford
of the installation
specialists LTT.
maintain clearance from exposed
electrical parts in the switchgear.
In this way, the penetrations can be
sealed without having to take the
equipment out of service. ComEd
and Luse worked closely with Hilti
engineers to develop seals that
would work for this application.
These new designs and work practices
amounted to huge savings in
time and expense.
ComEd, based in Chicago, Illinois,
is a subsidiary of Exelon,
one of the largest energy producers
in the USA. ComEd distributes
electricity to 3.7 million endusers
in Illinois. To do this, they
must maintain more than 78,000
miles of power lines and operate
hundreds of transformer substations.
“Safety is paramount,” says ComEd
Project Manager Andy Grein, “especially
when we have installers
working in an energized environment.”
Before the specialists from
Luse are allowed to go into the
substation they must first complete
a five-day training program.
In addition to the dangers posed
by the electricity and working in a
confined space, the workers are
also trained in CPR and other first
aid techniques so that they are
prepared for any type of incident
that might occur.
Although the workers acclimatize
quickly to the dangerous environment,
they must be careful to never
to become complacent. “This is
the greatest risk,” says Jim Ford
from LTT. “Having a feeling of familiarity
with 12,000 volt cables
can breed a relaxed attitude, which
increases the dangers significantly.”
To fight this, the team has a
safety meeting before work and
also discusses safety procedures
after lunch and again at the end of
the day. “In 30,000 working hours
we have not had an accident or a
breakdown,” says Ford in pointing
out the success of the safety program
he developed.
A fire in a substation can greatly
impact a utility’s financial situation,
reliability and customer satisfaction.
Steps taken to mitigate or
reduce the damage can have a big
impact. “Effective fire protection
is like insurance for us,” says John
R. Bettler, head of the Fire Protection
Engineering Group at ComEd.
“It helps us to attain our primary
goal – to make sure that our customers’
lights never go out.” These
fire protection upgrades make
sense, because they will limit
losses and down time in the event
of a fire.

Magazine 1/2007
Construction
Page 13
Ceilings perforated like Swiss
cheese. The numerous control,
measuring and live power cables
lead through hundreds of
penetrations. Hilti engineers
have developed tailor-made
firestop designs for sealing
the various field conditions
encountered.
The task, however, is anything but
simple. “The ceilings of transformer
substations look like Swiss
cheese,” says Luse Project Manager
Lance Simms. “In addition to
the live power cables there are control
cables everywhere, leading up
to the switchgear cabinets.” In
order to seal the hundreds of penetrations
found in one ComEd substation
Hilti fire protection engineers
developed many unique
designs (engineering judgments)
for sealing new field conditions as
they were encountered. “The turn
around time from Hilti, for producing
these new firestop solutions is
quite impressive,” says Simms.
The hatches that allow access to
the substation basements pose a
particular challenge. ComEd
needs to be able to open them at
any time, yet they must provide a
barrier to heat and smoke from the
basement in the event of a fire.
Hilti products are also used for this
solution. The hatch is covered on
its underside with Hilti CP 675T
firestop board, turning it into a heat
shield. The board is surrounded by
wrap strip that will expand and
close off gaps in the event of
a fire. With this barrier in place,
the hatch is still light enough that
it can be opened by ComEd field
crews. “This is a true innovation
for us,” says Bettler.
The majority of the firestops provide
a 3-hour fire rating, but in
some field conditions only a
smoke seal can be installed. Risk
assessments are performed when
needed to evaluate the seal design.
Pre-walk downs of the sites by
ComEd and Luse establish the basic
designs. Additionally, ComEd
supplies a field engineer who
spends 2-3 days a week with the
crews who can evaluate the seal requirements
and the installation
hazards if something new emerges.
The field engineer also provides a
quality review of all the installed
seals.
ComEd has implemented an impressive
firestop program. And as
we leave the station after notifying
the control center, it is easy to understand
the rigor around safety.
Driving away from the station, seeing
all the well-lit homes, shopping
centers, and commercial centers, it
is easy to see the need.
Installation and inspection
The demands placed on the
firestop designs used in ComEd facilities
are much greater than those
found in commercial construction.
The considerable weight and mass
of the bundled cables called for
the development of unique firestop
designs to meet the challenges
of the large penetrants found in
substations. Other issues, like
cable vibration produced by the
flow of electricity in high voltage
cables created a concern that vibration
may loosen the firestop
materials.
Currently, ComEd plans on implementing
an annual inspection program
to review the conditions of
the sealed basement areas and inspect
for any damage. Initially, engineering
will perform this review to
make sure policies and procedures
are being followed but over time
this will be moved over to the maintenance
workforce. “We are working
on a monitoring program that
immediately identifies possible
changes to installed systems and
minimizes possible damage,” says
Bettler.

Focus on Russia
Page 14
Moscow builds
a new city

Magazine 1/2007
Focus on Russia
Page 15
The hectic pace of high-rise construction has broken out along
the bank of the slow-moving Moskva River in Russia’s capital
city. Fifteen skyscrapers will soon form the new city center,
known as Moscow City. New streets, tunnels and bridges must
also be built. Moscow is a city in the midst of transformation.
Moscow City: individual
towers are already standing.
The ones to follow will break
height records.
By Ursula Trunz (text) and Uli Reitz (photos)

Focus on Russia
Page 16
Moscow’s skyline is changing. The Federation Tower
will sit in between the two existing towers.
The western part of the
Federation Tower looks down
on the first few stories of the
what will be the triangular
eastern part. Small photo: the
north tower is almost finished.
The western part of the Federation Tower (middle of photo) is as high as it will get. The eastern part will one day
look down at it, along with the Embankment Tower (at right). Photo at top: the Moscow skyline sees the rise of the
Federation and Embankment Towers.

Magazine 1/2007
Focus on Russia
Page 17
It can’t bee seen from Red
Square. Or from old Arbat
Street or, initially, from the Cathedral
of Christ the Savior. But
Alexey Nebaev, a Muscovite to the
depths of his heart, wrings his
hands with fascination and wonder.
“Moscow is being transformed.”
From the pedestrian
bridge leading from the Cathedral
of Christ the Savior over the dark,
flowing Moskva one can detect the
small tooth jutting up on the ho rizon.
That must be Moscow City,
the new city within the city
On the following day, Alexey
Nebaev drives with us to Moscow
Lomonosov University. The colossal
construction, built in the 1950s,
along with seven other buildings
from the Stalin era, pitch and fall out
of the otherwise flat construction
landscape. Moscow Lomonosov
University stands atop one of
seven hills in the city. Viewed from
this vantage point, Moscow City
rises out of the southwest and fairly
shoves itself into the city’s skyline.
This is where we are headed.
“Moscow will soon have two city
centers. The political center, based
around the Kremlin, and the commercial
center, based around
Moscow City,” says Alexey Nebaev
while we’re on the way to the
Metro. Escalators, steep, long and
moving twice as fast as anywhere
else, take us deep below the city
surface. Trains then transport us
past beautifully-decorated stops
that are lighted in the manner of
theater halls of an earlier era. They
will bring us to our futuristic target.
15 skyscrapers over a surface area
of 60 hectares (148 ac), lying directly
on the Moskva’s Krasnopresnenskaya
embankment, represent
Moscow’s answer to Manhattan.
And it’s growing daily. The
small tooth we observed turns
out to be the western segment of
the Federation Tower. It has already
reached its planned height
of 235.4 meters (772 ft) while
the eastern segment continues to
grow upward, eventually reaching
a height of 340 meters (1140 ft).
A 435 meter-tall spire (1427 ft)
will rise between the two towers,
statically uniting them while housing
panoramic elevators. The Federation
Tower will be Europe’s
highest skyscraper.
Russia lost its ability to build
skyscrapers over the last 50 years,
as local specialists freely admit.
The Turkish construction company
Ant Yapi is building the western
tower while a Chinese company
constructs the eastern tower. Both
companies brought their workers
with them to Moscow, so on the
western tower Turkish is the common
language while on the eastern
tower Chinese can be heard. Even
the written instruction to the
workers are in their local languages.
As countries move closer
together, it seems they remain at a
distance.
The construction elevator takes us
to one of the lower, practically finished
floors of the west tower. The
Russian Armo Group has established
temporary offices here to
plan the water, heating, air conditioning
and alarms and sprinkler installations.
They will be installed
together by a subcontractor. Project
manager Alexander Moiseev sees
the height of the building as the
biggest challenge, in addition to the
question as to how efficiency, quality
and price can best be combined.
One hundred so-called communication
centers are planned for the
apartments on the upper ten stories
of the 60-story building, that will
primarily house commercial office
space, where the pipes will all meet
and consumption of water and energy
will be monitored. In build -
ing these communication centers
Alexander Moiseev is using the
Hilti MN channel installation system
exclusively. “According to my
calculations we will have to drill
ten-times fewer holes in the concrete,
enhancing our efficiency. We
also have greater flexibility with
the Hilti system. On top of that,
they are appealing to look at. The
savings we will see in terms of fastening
points and working time will
more than make up for the higher
price. We’re not rich enough to use
cheap materials.”
Our next station is the northern
tower. The beefy round construction,
with four squared supports, is
a “mere” 29 stories tall and is being
built by the Austrian Strabag
company. Water supply, as well
as heating, air conditioning and
ventilation has been farmed out to
the Austrian VA Tech company.
Hilti Russia has set up a container
for these customers directly at
the construction site where they
have direct access to all the material
required for the installation
work. Having the available material
in the immediate vicinity is
just as important as the material’s
quality.
From the roof of the northern tower
Alexey Nebaev scans the area as

Focus on Russia
Page 18
he had done previously on the hill
at Moscow Lomonosov University.
Although he coordinates all contacts
to the customers at Moscow
City as Hilti’s Top Project Manager,
he can hardly grasp the
dimensions of the overall construction
plan. “More than 70 compa -
nies and subcontractors are participating
in the project. When I arrive
I sometimes don’t know where to
start.” Dealing with the dozens of
contact partners and consulting
Hilti engineers he needs a great
deal of nerves and specialist knowledge.
Additionally, the product
range varies according to individual
customer and project to project.
There’s no product line that is not
represented here. One year ago
Hilti Russia invited representatives
from the developers, insurance
companies, official authorities and
the construction and engineer companies
involved to a fire protection
seminar. The topic is gaining significance
for skyscrapers and requires
the experience of experts.
est segment rise to the 59th of a
planned 60 stories, jutting blackly
into the blue Moscow sky. Up there
the team of engineer Özgür Barlas
– working for the Turkish construction
company Enka – are fastening
trapezoidal steel sheeting to
the steel beams with the Hilti DX
76 powder-actuated fastener. He
has no time to enjoy the view of
the city from this lofty height. Having
completed his studies two
years ago he laughs when he says
that this is “my first skyscraper.”
New height record
Far below us is an as yet undeveloped
spot of land, traversed by
stray dogs. “That’s where the Russia
Tower will be built. It was
planned by the famous architect
Sir Normal Foster,” says Alexey
Nebaev. In Moscow one talks
about the fact that this is to be
the highest skyscraper in the
world. And that something even
higher is to be built next to
Moscow City.
In Moscow, with its 15 million inhabitants,
one also speaks of running
out of room. On average, one
person lives on approximately a
bit more than 20 square meters
(215 sq ft), as much as one-third
less than in the rest of Europe.
Each year about five million
square meters (53,819,500 sq ft) of
residential space is constructed.
Prices are rising inexorably. In
2006 alone prices are said to have
doubled to an average 4500 dollars
per square meter. Traffic is also a
hot topic of discussion. Moscow’s
four rings – the outermost of which
circles the city with 108 kilometers
(67 mi), are chronically jammed.
Muscovites complain that they can
no longer keep up contacts with
friends and relatives as the drive
through the city takes far too much
time. Local psychologists warn
that sitting in traffic for hours can
trigger aggression.
The excavation work is the only
thing completed on the Eurasia and
Mercury Towers. There is also
nothing to be seen of the two Capital
City towers. But the three
building components of the Embankment
Tower are almost complete.
The steel construction bears
witness to the impressive size. The
ends of the supports for the high-
Alexander Moiseev, Project Manager for the Russian
Armo Group. Ten times fewer holes to drill raises efficiency
in the western portion of the Federation Tower.
Hilti’s Martin Tsaune provides
the desired products directly on
the construction site.

Magazine 1/2007
Focus on Russia
Page 19
Differing methods of construction:
the steel construction of the
Embankment Tower (photo far left)
and the concrete construction of
the Federation Towers (at left).
Trapezoidal steel sheeting
being fastened to the
steel beams efficiently
and reliably.
Tunnel and bridge
On the following day we travel to
the north on Leningrad Street,
known for traffic delays. To the
right we see the prefabricated
construction of Himke, a satellite
of Moscow. “About 400,000 people
live here,” estimates Igor
Alexeev, our guide on this day and
a top project manager for Hilti
Russia for the civil engineering
sector. And as we sit in traffic he
tells us about Strogino, the first
Metro station that is being established
outside the outermost ring
of Moscow. Strogino is the name
of the suburb that the station will
serve.
Simultaneous with the extension
of the Metro line, a new section towards
the center of Moscow is being
built on the Krasnopresnenskaya
Highway, running from
Moscow to Riga. The largest Russian
construction companies are involved
in this rail and road project.
Metrostroy serves as the general
contractor while Mostotrest and
Gordorstroy, to name just two, are
also involved. The Sistema-Gals
planning and construction company
monitors and directs the construction
of all participating companies.
From an engineering point of view
there are two unique sections of
the Krasnopresnenskaya Highway.
Under the park-like forest
of Zamoskvorechye a tunnel is
being constructed that is more than
3 kilometers (1.9 mi) long. A cable-stayed
bridge is also being
built over the Moskva River. Near
the city, yet still far enough away
to have a rural feeling, this area is
where well-to-do Moscow families
have their dachas, or weekend cottages.
Alexander Lushnikov and Boris
Belov, the two directors of a division
of Sistema Gals, know the
giant construction site as well as
their own apartments. “The first
section of the new road is above
ground and leads away from
Moscow’s outermost ring, disappearing
into the tunnel,” explains
Alexander Lushnikov. It’s not
merely one tunnel, but three, two
of which have three lanes each,
dedicated to one-way traffic.
There is a smaller tunnel in the
middle that has lateral connections
to the other two for maintenance
and an emergency exit. The
Metro trains will travel on the
lower level of one of the two larger
tunnels.
The conditions for building the
tunnel were technically and eco-
The Bolshoi’s new interior
Özgür Barlas, from Turkey, is one of
the team working on the Embankment
Tower: “My first skyscraper.”
The world famous Bolshoi Theater
in the center of Moscow will retain
its classic features while being renovated.
About half the 230 yearold
theater, a UNESCO World Heritage
Site, is being renovated. The
remaining half was replaced by
new construction. From outside
the theater one cannot tell that the
new construction actually extends
underground. The new floors under
the theater are for dressing
rooms, restroom facilities and a
bar. The theater itself will be scientifically
restored and the 150 yearold
pine beams, once restored,
will be put back in place because
of their contribution to the theater’s
acoustics. The national cultural organization
Roskultura, as the owner
of the Bolshoi Theater, is investing
some 15 billion rubles (450 million
Invisible when
viewed from
the outside,
the Bolshoi
Theater is
getting more
inside space.
euro or 600 million dollars) until the
theater reopens in 2008.

Focus on Russia
Page 20
Alexander Lushnikov:
demanding tunnel construction.
Sergey Kamishov:
“There’s never enough time!”
Boris Belov: “Corrosion resistance
is the most important thing.”
Andrey Klibik: “I can share my
ideas with Hilti as a customer.”
logically difficult, says Alexander
Lushnikov. “We used a tunneling
machine of the Herrenknecht
company of Germany. The drilling
head had a diameter of 14.2 meters
(46.5 ft). We were able to proceed
with work on the tunnel while disturbing
the land above as little as
possible.
The inside of the tunnels are now
being finished and machines are
working underground day and
night. “Vremya,” says Sergey
Kamishov, the Deputy General
Manager of Metrostroy. “We simply
don’t have enough time!” It’s
a good thing that everything is going
according to plan. Alexander
Lushnikov and Boris Belov have
been relying on Hilti anchor technology
for about ten years. In the
tunnel they are using it to install
the ventilation equipment and the
tunnel cladding. They are also using
the Hilti MQ channel installation
system for the cables and
pipes. Boris Belov likes the cor -
rosion-resistant properties of the
material. “The longevity is worth
more than what the material costs.
And Hilti can’t be beaten when
talking about the anchor’s approval.”
He mentions the training
offered by Hilti as another im -
portant point. “The anchors are
only reliable if they’re correctly
installed.”
Boris Belov was significantly involved
in the technical design of
the tunnel and is now monitoring
the realization of the plans. The
tunnel may be impressive, but
when speaking of outward beauty,
the cable-stayed bridge, that connects
to the tunnel section via
a small above-ground section, is
in another category. The cables
emerge from an almost horseshoeshaped
arch of steel at the bridge’s
midpoint in various angles and
directions. At its highest point,
the arch of steel is 106 meters
(347.7 ft) above the surface of the
Moskva. A restaurant in the form
of an ostrich egg is to be “hung” on
the arch at a height of 70 meters
(229.6 ft). But for now, there are
two workers at the edge of the
Sausages and know-how
Sergey Borisovich Tkachenko
doesn’t waste words. “If a city
doesn’t evolve it dies.” The architect
is the Director of the Scientific
and Research Institute for General
Plan of Moscow.
Looking back some 20 years in time,
Sergey Borisovich Tkachenko, or
Sergey Borisovich, recalls that it was
very quiet in terms of city planning in
Moscow. Prefabricated buildings
were thrown up at the edges of town
and next to nothing was happening
in the city center. “But ten years
ago,” his voice rises, “Moscow began
a phase of uncontrolled growth.
This was the time of wild capitalism
where people who had suddenly
come into a great deal of money,
wanted to set a personal architectural
monument.” Sergey Borisovich
speaks of “useless buildings without
any architectural value.” While
there was an overall plan, it only
existed on paper. “Since 1999 the
legal prerequisites are in place for
city planning and they are based
on structure and order in the urban
development of Moscow.”
But this doesn’t help limit the problems
of Sergey Borisovich and his
team. “We have to move industrial
operations out of the city center
and create new living space. We
should also be creating green
space.” There are 60 zones throughout
the city, all within the outermost
highway ring, that are zoned for
high-rises. Currently the construction
of hundreds of hectares is being
planned.
“20 years ago we hardly had
sausage and now we can chose
from among many different kinds,”
says Sergey Borisovich. “The situation
is similar regarding know-how.
We have various methods for dealing
with problems. It’s just difficult
deciding on which one.” He therefore
finds discussions with specialists
from other big cities that much
more important. In spite of his visions
of putting more public and
private transportation underground,
he remains realistic. “The
transportation problem will never
be solved. Development is far outpacing
planning.” In closing Sergey
Borisovich Tkachenko says that
every city has the same destiny.
“Some people regret losing the old
and the rest welcome change.”

Magazine 1/2007
Focus on Russia
Page 21
Three tunnels for road, rail and maintenance/safety.
Durable fastening solutions for the tunnel cladding.
The ventilation
system is also
being fastened
with Hilti
products.
The drill bit head of the tunnel’s drilling machine has a
diameter of 14.2 meters.
A 1000 meter-long cable-stayed bridge connects to the tunnel. A restaurant
is to be “hung” onto the steel arch.
bridge. They are using Hilti diamond
coring tools in preparing
the guardrail for anchoring. At
the head of the bridge we are met
by Andrey Klibik, a worker for
Mostootryad-99, a subcontractor
responsible for installing the utility
lines on the bridge. He simply has
to talk about his enthusiasm for
Hilti technology and is convinced
of the idea of mutual benefit. “We
can both profit because, as a customer,
we can share our ideas with
Hilti.”
The small settlement next to the
bridge, consisting of wooden
houses, is about to lose its leisurely
pace and peace and quiet. Even
Aleksandr Solzhenitsyn, who purportedly
lives there, will have to
get used to the noise of cars rushing
by. At the end, Alexander Lushnikov
laughs and says in a philosophical
manner: “It’s strange how
new roads seem to create new and
added traffic.” Moscow’s growth
can’t be stopped.

Innovation
Page 22
Like drilling th
1967 1979 1980
The legendary Hilti TE 17 rotary hammer
revolutionized concrete drilling. The secret
is the tool’s electropneumatic hammering
mechanism.
By Manfred Schiefer
Before Hilti introduced the
TE 17 rotary hammer to the
market in 1967, drilling in concrete,
masonry and other hard materials
was very difficult. The only way the
hammer drills prevalent at that time
could work their way through the
extremely resistant materials was
through the power of the operator.
This was tiring and time-consuming.
The development of the electropneumatic
hammering mechanism
was to change all this. But the
first rotary hammers, put on the
market in the 1960s in the USA,
were too delicate to withstand the
harsh construction site environment.
“The first tools were largely
taken out of action by dust,” says
Philipp von Heimendahl, a product
manager specializing in rotary hammer
and breakers in the Drilling &
Demolition Business Unit. “It was
Martin Hilti who first looked not
only at the hammering mechanism,
but considered the rotary hammer
as a single system, where all components
had to be optimally coordinated
with one another.”
Hilti engineers not only improved
the electropneumatic hammering
mechanism, they developed an
entire range of innovations: the robust
connection end with a rollerlocking
system ensured better
power transfer to the drill bit
even with the first Hilti TE 17. The
sealed assembly helped keep dust
out of the hammering mechanism
and allowed for permanent lubrication.
The safety of the operator
has also been important to
Hilti from the start. The first Hilti
rotary hammer incorporated a
mechanical slip clutch that pre-
vents the sudden rotation of the
tool on its own axis when rebar
are hit.
Over the years, every part in
the tool has been upgraded. From
the first usage worldwide of an
electronic motor control, to battery
technology in rotary hammers,
to welded drill-bit heads
and the Polygon chisel, to the
Active Torque Control security
system up through to new services
such as Hilti Fleet Management
and Hilti Lifetime Service.
This year Hilti continues to bring
further developments to the market.
The product range will be
expanded by several higher-performing,
more robust rotary hammers,
combihammers and breakers.
Electropneumatic hammering principle
The hammering action in a conventional hammer drill is generated by a cam
mechanism. The impact achieved is dependent on the pressure applied by
the operator. In contrast, a tool employing the electropneumatic principle is
much more efficient, more comfortable and thus less tiring to work with: The
crank converts the rotation of the electric motor, by way of an air cushion,
into linear movement of the striker piston. The striker piston travels at high
speed to contact the impact piston which, in turn, transfers this impact energy
to the tool in the chuck. The impact energy generated does not depend
on the pressure applied by the operator.

Magazine 1/2007
Innovation
Page 23
rough butter
1983 1986 2007
Anniversary
events
In many Hilti marketing organiza -
tions the 40th anniversary of the
electropneumatic hammering mechanism
will be at the center of
advertising activities – at fair appearances,
but also with events
that include the public at Hilti
Centers. The “Bring us your oldest
Hilti tool” competition shows
the longevity of Hilti tools. A few
proud owners are certain to bring
in their still-functioning Hilti TE 17s.
Images of the proud owners will
be published on a dedicated Website
(www.morethanatool.com)
that will also illustrate the history
and innovation as well as the
electropneumatic principle.
Decades and worlds lie between
the old and the new. Hilti continuously
developed the electropneumatic
rotary hammer. More on
the topic of the Hilti TE 50 rotary
hammer on page 31.

Engineering
Page 24
Hilti test engineers initially carried
out beam tests and then slab tests
(photo above). The slanted web
reinforcement, anchors with nuts
below (image at right), made roofs
more resistant to punching.

Magazine 1/2007
Engineering
Page 25
Reinforcing
flat decks
Tragedies can occur when a flat deck collapses and the supporting
columns break through the concrete slab in an action known as punching.
There are fundamental means and methods to prevent this and to reinforce
existing structures. Here’s an overview, and look into, an effective method
recently developed by Hilti and now ready for practical application.
By Jakob Kunz*
In past years, several high-profile
structural collapses have
brought the prevention of punching
in existing buildings and structures
to the attention of specialists
in this field. In 1995 the Sampoong
department store, in Seoul, South
Korea, collapsed. The same thing
happened to the Piper’s Row car
park in Wolverhampton, Great
Britain, due to corrosion and insufficient
maintenance. In 2004
the collapse of, and subsequent
fire in, an underground garage in
the Swiss village of Gretzenbach
generated headlines.
Tragic accidents such as these
could be avoided in many cases
if flat decks known to possess insufficient
resistance to punching
were reinforced. Currently, expe -
rience with methods of subsequently
reinforcing existing structures
against punching is very
limited. In an initial step, infor -
mation must be gathered on lo -
cation regarding the strength of
the concrete used and the actual
reinforcement. The resistance
against punching must be calculated
by using corresponding
mod els. As there are no standardized
calculation methods avail -
able, the loading capacity of the
reinforcement must be calculated
using meaningful engineering
models.
Avoidable catastrophes? In 1995 a department store in Seoul
collapsed (above), in 1997 a parking garage in Wolverhampton.
Punching reinforcement. Set with Hilti HIT-RE 500.
Keystone
Possible causes
Research into the accident at
Gretzenbach [1] showed that it is
often not a single cause, but the
concurrence of several factors
that lead to failure. Mistakes in
the planning and execution of the
building work and unforeseen usage
caused this underground ga -
rage to collapse. On the planning
side, the loads carried by supporting
columns, concrete coverage
and the unequal distribution of
shear force were all incorrectly
calculated. This subsequently resulted
in incorrect placement of
the column head and the reinfor -
cement being set too low. When
the facility was in use, more earth
was piled on top of the structure
than initially planned. A further
possible cause of insufficient
punching resistance was inadequate
effective concrete strength.
Further causes could be that the
planned punching reinforcement
was never inserted or that a change
in use increased the load on the
columns.
Reinforcement
systems
The following parameters largely
influence the punching resistance
of a flat deck or foundation:
– Reinforcement to take up bending
moments in the support region
– The cross section of the supporting
column, or the size of
the control section
– The static height
– The punching reinforcement
– The strength of the concrete
– The length of span between supporting
columns

Engineering
Page 26
The first four parameters can be influenced
by subsequent reinforcement
methods while the last two
are given by virtue of the existing
structure.
1. External reinforcement
Today, external reinforcement
(figure 1) with bonded steel plates
is a standard procedure. Fiber-reinforced
plastic plates are also
used. The technology is developing
at a rapid pace. There are currently
reservations, however, regarding
brittle failure of the plates.
The end anchoring and long-term
behavior of these plates is the current
focus of research and development.
If the top side of the flat deck is accessible,
the work and cost of
bonding additional reinforcement
to take up bending moments is
comparatively low. The degree of
reinforcement that is achievable
largely depends on the given circumstances.
Design calculations
for fiber-reinforced plastic plates
must pay attention to the varying
degree of rigidity of the inset steel
reinforcement and the plastic material.
As the allowable bending resistance
given in reinforced concrete
standards has an upper limit, this
method is more effective on lightly
reinforced slabs than on those with
heavy reinforcement to take up
bending moments.
Reinforcement systems
Figure 1:
External strengthening of bending
tension reinforcement.
Figure 2:
a) Widening of a supporting
column.
b) Sprayed concrete capital.
c) Steel capital.
Figure 3:
a) Additional concrete layer.
b) Additional concrete layer over
the punching region.
Figure 4:
a) Continuous punching
reinforcement.
b) Punching reinforcement set in
adhesive mortar.
2. Larger column cross
section
The control section can be enlarged
by increasing the width of
the entire column or through addition
of a capital. Capitals may be
formed by applying sprayed concrete
or by adding steel structures
(figure 2) When columns are
widened or concrete capitals are
added it must be ensured that the
shear force is taken up by the entire
supporting column. The surface
between new and old concrete
thus has to be roughened. Shear
connectors ensure the transfer of
forces between new and old concrete
[2].
If a steel collar is fitted, a rigid connection
between collar and column
is decisive. If there is a risk of the
collar slipping down in the event
of rotation of the slab above the
column, its effectiveness would be
greatly limited. Collars of this type
are sometimes kept under tension
by relatively long threaded rods. The
pretension is thus maintained and
static friction between the collar
and the concrete prevents slippage.
If the collar is fastened to the concrete
column with anchors, slippage
must also be prevented through suitable
means, such as filling the annular
gap between the anchor and
the steel structure with injectable
adhesive mortar through special
washers.
3. Greater static
height
An additional concrete layer can
increase the static strength of
the concrete deck (figure 3a).
However, the weight of the deck
and, as a result, the punching
load, are then also much higher.
Additional concrete layers increase,
above all, the slab’s ability
to take up bending moments. If
they are used to improve shear
load resistance, special measures
must be taken to ensure that the
joints between the concrete layers
are capable of transferring all
forces occurring in the area of
potential punching failure, thus
ensuring monolithic behavior of
the entire segment. The forces
flow more clearly if a thicker
concrete slab, capable of taking
up the punching load on its
own, is placed only over the area
of the supporting column (figure
3b). The deck is then suspended
from the new concrete slab by
anchors placed outside the punching
area.

Magazine 1/2007
Engineering
Page 27
4. Post-installed
punching reinforcement
There are two methods of postinstalling
punching reinforcement.
If both the under and top side can
be worked on, the concrete deck
can be drilled through. Steel rods
can be pushed through the drilled
holes and then tensioned against
the concrete slab (figure 4a). The
drilled hole must then be filled
with a suitable mortar to prevent
movement of the rods when subject
to shear load and to ensure that
water cannot find its way into the
hole [3].
All methods carried out from the
top side of the concrete slab have
significant disadvantages. For one,
any soil or material on top has to be
removed or, if in the interior of a
building, the corresponding area
has to be closed. Secondly, in the
case of underground garages or
roofs, the existing sealing layer is
penetrated. Special attention therefore
has to be paid to the subject of
sealing.
If the top side of the slab can be accessed
only with a great difficulty,
the punching reinforcement has to
be placed from the underside. Steel
rods are set with a suitable adhesive
mortar in holes drilled at an
angle (figure 4b). It is important
that the drilled holes extend at least
as far as directly below the upper
reinforcement. The effectiveness
of punching reinforcement depends
largely on how it is anchored.
Accordingly, also with this
method, the type of adhesive mortar
used is decisive.
Tests with obliquely set
punching reinforcement
Hilti has carried out tests with
shear-load reinforcement post-installed
in holes drilled at an angle
to the supporting column. The tests
have been based on a system previously
tested by the Royal Institute
of Technology KTH in Stock-
Load – deflection
■ unreinforced ■ reinforced 24xd=16mm ■ reinforced 36xd=16mm
1600
1400
1200
1000
800
600
400
200
0
0 5 10 15 20 25 30 35 40 45 50
holm in 1995 [4]. In those tests,
load increases of about 50 percent
over identical non-reinforced slabs
were obtained with 24 rods set in
adhesive mortar without special
anchoring.
As anchorage greatly influences
the effectiveness of punching reinforcement,
the lower ends of the reinforcing
rods are now anchored
with nuts. The upper sections of
Literature
Mid-slab deflection [mm]
Tests showed that the adhesive mortar influences
effectiveness.
the rods are set in high-strength adhesive
mortar. For the purpose of
initial investigation, Hilti test engineers
carried out ten tests of this
kind on beams. The results showed
that the number of reinforcing rods
and the properties of the adhesive
mortar used had the greatest influence
on the effectiveness of the reinforcement.
Load increases of up
to 80 percent were achieved with a
high-strength adhesive mortar.
In a subsequent step, tests carried
out with slabs showed load increases
up to the highest theoretical
punching load. The results of
these tests were processed at the
Federal Institute of Technology in
Lausanne, Switzerland [5] to form
a conclusive calculation concept.
In addition to higher loads, the
slabs reinforced with post-installed
punching reinforcement
positioned obliquely and set in adhesive
mortar also showed excellent
characteristics under strain,
with greater deformation before
failure and much less brittleness
than seen with unreinforced slabs.
In the event of overloading, the
load can thus be transferred to
neighboring columns, greatly increasing
the safety of the entire
deck.
* Dr. Jakob Kunz is a Consulting
Engineer at Hilti’s corporate headquarters
in Liechtenstein. He specializes
in fastening systems and
in finding solutions for complex
fastening problems. For additional
information please contact
jakob.kunz@hilti.com
[1] Muttoni, A., Fürst, A., Hunkeler, F., “Gutachten zur Einsturzursache,” Media information of November 15, 2005.
[2] Randl, N., Münger, F., Wicke, M., “Verstärkung von Brückentragwerken durch Aufbeton,” Bauingenieur, edition
4/2005.
[3] Mentétrey, Ph., Brühwiler, E., “Shear strengthening of existing reinforced concrete slabs under concentrated
loads,” EPFL – Repro – 1996
[4] Hassanzadeh, G., “Förstärkning av brobaneplattor med häsyn till stansing” (“Strengthening of bridge slabs
with respect to punching”), Master of Civil Engineering Thesis, KTH, Stockholm, 1995 (in Swedish)
[5] Muttoni, A., Fernàndez Ruiz M.: Design Method for Post-Installed Punching Shear Reinforcement with Hilti
Tension Anchors HZA. Ecole Polytechnique Fédérale, Lausanne, 2007.

Innovation
Page 28
Hilti makes corded
saws redundant
The Hilti WSC 55-A24 cordless hand-held circular saw. A mobile pro for
short, fast adjustment work.
Cordless freedom for rooftops. Sawing thick formwork with the Hilti WSC
70-A36 cordless hand-held circular saw.
The Hilti WSC 70-A36 and WSC 55-A24 cordless
circular saws bring total mobility to circular
sawing – with the performance of corded tools.
The innovative WSC 70-A 36 is
Europe’s first cordless circular
saw to offer 70 mm (2.7 in) cutting
depth and 36-volt power. Users can
also depend on the new Li-ion battery
technology with Hilti CPC
“For the first time in all the years
we’ve been working on roofs,
there’s no cord to get in the way,
and we don’t have to worry about
it being too short either,” enthuse
Albert Buchhart and Tobias Benrens
of the Sparr roofing company
of Vorarlberg in Austria. German
roofing specialist Johannes
Goeppert of Schoenwald, also has
nothing but praise for his new
cordless Hilti circular saw: “It does
away completely with the need
for corded saws.” With a fully
charged battery, the Hilti WSC
70-A36 cuts up to 100 meters (328
ft) in 24 millimeter-thick (.9 in)
boards.
The new 24-volt Hilti WSC 55-
A24 circular saw is yet another
member of the Hilti cordless family.
Best tool in the 55-millimeter
class, the Hilti WSC 55-A24 is
ideal for small, quick trimming
jobs. It can make up to 200 cuts
to a depth of up to 55 millimeters
(2.1 in) without recharging.

Magazine 1/2007
Innovation
Page 29
A fine touch
New
Hilti
patent
The needle adapter
removes stubborn
rust and paint.
Below left:
Removes tiles
neatly and
conveniently.
Sets new standards in direct fastening.
The DX 76 PTR powderactuated
fastening tool – with
patented piston braking system.
Fastening professionals now
have even more reliability
available to them: the new Hilti
DX 76 PTR powder-actuated fastening
tool. The Hilti developed
and patented PTR system (standing
for Punch Through Resistance),
with its piston-braking
system, provides active protection
against punching through
metal sheeting via the built-in
piston-brake system, promoting
a constant fastening quality, particularly
with thin base material.
Two fasteners having construction
supervisory authority approval
ensure the high level of
fastening efficiency. In addition
to the trusted Hilti X-ENP nail
for fastenings on a base material
having a depth of 6 mm (0.23 in)
or more, the Hilti X-ENP2K steel
nail, for direct fastening of profile
metal sheeting to steel beams
and profiles with a thickness of
3-6 mm (0.1 – 0.23 in).
No matter whether chiseling,
smoothing, roughening or
removing coverings, the TE 106
breaker and scaler goes through
thick and thin with the greatest precision.
Powerful, nimble and precise,
the tool, with 850 watts of
rated power, has main applications
of corrective chiseling and repair
work, removing tiles and plaster.
Thanks to its quick-change chuck,
the needle adapter can be fitted to
this versatile tool in seconds, making
it ideal for jobs like removing
paint and rust and cleaning concrete
mixers. With a weight of only
3.6 kilograms (7.9 lbs), this lightweight
tool features an ergonomic
rubber-padded front grip for a comfortable,
secure hold and accurate
Below right:
Accurate surface
finishing.
guidance. The user’s steadying
hand remains close to the point of
chisel contact. Vibration and heat
generation are well suppressed. Vibration
reduction is particularly important
when using the needle
adapter for delicate work.

Innovation
Page 30
One for
all
Comfortable work
Five very visible
lasers and two
reference lines
at the touch
of a button. The
Hilti PMC 36
combilaser.
Convenient cutting and virtually dustless slitting to widths of up to 25
mm – all with the same tool. The DCG 125-S saves valuable time.
Compact, versatile and simply unique – the Hilti
PMC 36 combilaser unifies all the advantages of
line and point lasers.
Ergonomically
designed for easy
handling: the
rugged DAG 125-S
takes metals of
all kinds in its
stride.
The Hilti PMC 36 combilaser
is ideal for use in the drywall
trade for setting out partitions, in
the electrical trade where it can
save a great deal of time when positioning
switches, sockets or cable
trays, or in the plumbing trade
where pipes have to be aligned accurately.
Heating and air-conditioning
systems installers will find
the PMC 36 perfect for transferring
measuring points.
This new laser tool projects five
easily visible points and two reference
lines (horizontal and vertical)
at the touch of a button. With the
aid of the accessory laser receiver,
the laser beams can be detected
with ease, even at distances of up
to 30 meters and in unfavorable
lighting conditions. Several attachment
points on the tool allow it to
be mounted on various wall brackets
or magnetic holders, ceiling
clamps or telescopic braces.
Precise in every way. The Hilti
PMC 36 proves itself in drywall
construction, electric trades as
well as in measuring work for
plumbing, heating, air conditioning
and ventilation.
Light and with a slim design, Hilti has developed
the new angle grinders for trade-related customer
needs. The DCG 125-S for general construction,
civil engineering and installations, and
the DAG 125-S for metal workers
These two new tools are built
to last and both feature a new
disc guard and guard attachment
interface. Their slim, ergonomic
design incorporating a non-slip
grip surface on the upper body section
and a soft-padded side handle,
make these tools the preferred
choice of professionals who demand
minimum vibration and maximum
safety for grinding, slitting
and cutting to a depth of up to 35
mm (1.4 in). Thanks to Hilti Smart
PowerTM technology the two angle
grinders ensure intelligent digital
control for constantly high performance
on materials of all kinds.
When fitted with the right Hilti diamond
cup wheel or cutting disc
these two Hilti angle grinders
achieve truly superior performance
– up to 50% higher than conventional
systems! Hilti’s innovative
ATC Active Torque Control
reduces kickback as it cuts power
to the motor in a fraction of a second
if sticking or stalling of the
disc causes excessive jolting.

Magazine 1/2007
Innovation
Page 31
The hammer
The new Hilti TE 40-AVR and TE 50 combihammers
unleash exceptional power and ensure a
unique level of operating comfort.
years after the intro-
of the elec-
40duction
tropneumatic hammering mechanism
Hilti is creating a clear
distinction. The Hilti TE 40-AVR
is simply the most powerful tool in
its category and expertly rounds
out the TE-C class. The Hilti TE 50
is the optimal tool for moving into
the TE-Y class, not least of all
because it weighs a slim 5.7 kilograms
(12.5 lbs) and is the lightest
combihammer in its class, providing
the best performance/weight
ratio in this category.
The new combihammers, in their
unmistakable red livery, are certainly
not ordinary tools in terms
of drilling performance and efficient
chiseling progress. Thanks
to the new, perfectly-balanced
tool design with the ergonomic
D-grip, the user experiences the
highest degree of comfort. The
TE 40-AVR is also equipped with
active vibration reduction technology,
which significantly reduces
vibration and makes the tool less
tiring to work with. With a view
to ensuring that a tool like this,
incorporating so much advanced
technology and with the potential
to clearly increase working
efficiency, doesn’t unexpectedly
change hands, Hilti has equipped
both combihammers with the TPS
theft protection system
The Hilti TE 40-AVR (above) and the TE 50: perfectly balanced and
outfitted with the ergonomic D-grip. Comfort and performance in unison.
The masonry connection
Handy and versatile.
The Hilti HIT-HY 70 fastening
system with cartridge, mesh
sleeve and anchor rod.
Offering tremendous versatility
for fastening in masonry
of all kinds, the new Hilti HIT-HY
70 injectable adhesive mortar fastening
system, consisting of only a
few individual items, provides superior
holding power in a huge
range of applications. With this
new system, only two connectable
composite sleeve sections are required
to cover up to five different
anchorage depths. The system’s
unique adhesive filling level indicator
makes it easy for the user to
determine when the right quantity
of adhesive has been injected for
a perfect fastening. This avoids
wastage of mortar and reduces the
cost of each fastening – while producing
maximum performance.
HIT-HY 70 has been extensively
and successfully tested in both indoor
and outdoor applications, in
dry as well as damp boreholes,
over an extended temperature
range – in other words, in virtually
every situation met in practice
To coincide with the launch of this
new adhesive mortar system, Hilti
also introduced the ED 3500 dispenser.
This tool is suitable for usage
with all Hilti HIT foil packs in
330 and 500 ml sizes and has the
ability to switch between cordless
operation and mains power in a
matter of seconds. The ED 3500 is
extremely versatile and ideal for
many situations. Offering the
power of a pneumatic system but
without a need for a heavy compressor,
this high-performance dispenser
allows effortless injection
even at low temperatures and in
deep holes.

Hilti. Outperform. Outlast.