Ultraframe Survey Guide v9 - Connaught Conservatories

S E C T I O N 5
Designing the
Ultraframe Roof
This is where all conservatory designs should begin, from the
roof down, top to bottom. There are occasions when either the
conservatory is being built on an existing base or the base
has to be in a particular position, otherwise design from the
top down. The roof should be treated as a separate structure,
although Ultraframe and its fabricators have to be flexible in
that they can (in most cases) design the roof bar spacings to
line through with the mullions in the conservatory wall frames -
for aesthetic reasons the customer may expect this. How often
has the PVCu cill been fabricated to suit the already built base
(even when the base angles are inaccurate) then frames are
manufactured to suit the cill then the roof fabricated to suit the
frames? Wherever possible the roof design dictates the frame
sizes, which decides the cill size, which determines the base
size.
DIAGRAM B
multi eaves beam
dimensions
110mm
There are three conservatory roofing systems available from
Ultraframe (UK) Ltd:-
1. Classic System
Suitable for any shape or size of conservatory
including Victorians, Edwardians, Lean-to, P-shape and
combination of these styles.
2. Ultralite 500 PVC
Suitable only for lean-to conservatories. Especially suited
for extremely low pitch applications such as bungalow
installations (guaranteed down to 2 1 ⁄2˚ pitch). Standard
pack sizes but cut on site if necessary.
3. Elevation and Elevation Plus
Modern low pitch polycarbonate ‘Click-lock’ system. Fully
bespoke or ‘Roof-in-a-box’. Elevation Plus is a lean-to with
hipped ends with roof pitch of 5˚ and hipped ends at
28 1 ⁄2˚.
4. Uzone
Edwardian or 3 facet Victorian up to 4 x 4m at a set
pitch of 22 1 ⁄2˚.
Eaves beam
always fits
flush with
inside face
of frames
Profile width
58 - 70
160mm
Variable pitch from 15-35˚. For greater or lower pitches use glazing bar
packers. (See diagram C)
DIAGRAM C
Glazing bar packers (to suit 5˚, 10˚, 35° and 40°)
5˚ pitch 10˚ pitch 35˚ pitch 40˚ pitch
THE CLASSIC SYSTEM
The following sections illustrate options and dimensional
information for the surveyor. For snow and wind loads
applicable to particular locations please refer to ‘The UK
Structural Design Guide’ (Electronic version) available from
Ultraframe.
Slide fixing bolts into position along the eaves beam captive
bolt slot. Locate packer over bolts and position to suit
required pitch (see sections above). Drop glazing bar onto
bolts and fix down.
EAVES BEAM - MULTI - STANDARD
When specifying the Classic roof, the dimensions required are
internal frame dimensions from point to point including any
corner posts, bay-pole, structural mullions or jointing couplers
that may have been used between the frames.
Glazing
Bar
Nut
Packer
Bolts
Eaves
Beam
13
© ULTRAFRAME 2000