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UK Construction Industry<br />

Key Performance Indicators<br />

Economic KPIs<br />

Methods of Measurement<br />

In Partnership with<br />

2006<br />

Based on Projects Completed in 2005


IMPORTANT NOTE:<br />

This document gives the methods of measurement for use<br />

with the 2006 UK Construction Industry Economic Key<br />

Performance Indicators.<br />

It should be used in conjunction with the 2006 UK Construction<br />

Industry Key Performance Indicators Handbook and Economic<br />

KPI Wallchart.<br />

In Partnership with<br />

Published by <strong>Constructing</strong> <strong>Excellence</strong><br />

ISBN: 1-905033-17-6<br />

Construction Industry KPI Pack 2006/Housing KPI Toolkit 2006<br />

Electronic Copy<br />

© Crown Copyright 2006<br />

Published under licence from the Controller of Her Majesty's Stationery Office.<br />

Copyright in the typographic arrangement and design vests in the Crown.<br />

This document/publication is value added. If you wish to re-use,<br />

please apply for a Click-Use Licence for value added material at<br />

www.opsi.gov.uk/click-use/system/online/pLogin.asp.<br />

Alternatively applications can be sent to: Office of Public Sector Information,<br />

Information Policy Team, St Clements House, 2-16 Colegate, Norwich NR3 1BQ<br />

Fax: 01603 723000 e-mail: HMSOlicensing@cabinet-office.x.gsi.gov.uk<br />

2006 UK Economic KPIs - All Construction - Methods of Measurement


UK ECONOMIC KPIs<br />

METHODS OF MEASUREMENT<br />

Page No<br />

Key Performance Indicators<br />

4 Client Satisfaction - Product<br />

5 Client Satisfaction - Service<br />

6 Defects<br />

7 Predictability - Cost<br />

-Project<br />

- Design<br />

- Construction<br />

9 Predictability - Time<br />

-Project<br />

- Design<br />

- Construction<br />

11 Profitability<br />

12 Productivity<br />

13 Safety<br />

14 Construction Cost<br />

16 Construction Time<br />

Appendix<br />

19 KPI Data Collection Form<br />

Further Help and Information<br />

25 <strong>Constructing</strong> <strong>Excellence</strong><br />

2006 UK Economic KPIs - All Construction - Methods of Measurement


2<br />

2006 UK Economic KPIs - All Construction - Methods of Measurement


This section contains the methods of measurement for the<br />

following Key Performance Indicators (KPIs).<br />

Client Satisfaction - Product<br />

Client Satisfaction - Service<br />

Defects<br />

Predictability - Cost<br />

Predictability -Time<br />

Profitability<br />

Productivity<br />

Safety<br />

Construction Cost<br />

Construction Time<br />

2006 UK Economic KPIs - All Construction - Methods of Measurement 3


CLIENT SATISFACTION -<br />

PRODUCT<br />

Purpose<br />

To determine the overall level of client satisfaction with the completed product.<br />

Definition<br />

How satisfied the client was with the finished product/facility, using a 1 to 10 scale, where:<br />

10 = Totally satisfied<br />

8 = Mostly satisfied<br />

5/6 = Neither satisfied nor dissatisfied<br />

3 = Mostly dissatisfied<br />

1 = Totally dissatisfied<br />

Method<br />

1 Carry out a survey on completion of the project to determine how satisfied the client was with<br />

the finished product/facility using the 1 to 10 scale above.<br />

2 The Client Satisfaction – Product performance is the client’s rating out of 10.<br />

3 Measure the benchmark score by plotting the performance on the Client Satisfaction – Product<br />

KPI graph.<br />

Example<br />

During a post-project review, the client scores satisfaction with the product at 8 out of 10. Using<br />

the Client Satisfaction - Product graph, the performance score of 8 equates to a benchmark score<br />

of 51%.<br />

Note<br />

This question may be asked as part of a more comprehensive survey or post-project review.<br />

4<br />

2006 UK Economic KPIs - All Construction - Methods of Measurement


CLIENT SATISFACTION -<br />

SERVICE<br />

Purpose<br />

To determine the overall level of client satisfaction with the service of the consultants and main<br />

contractor during the project.<br />

Definition<br />

How satisfied the client was with the service of the consultants and main contractor, using<br />

a 1 to 10 scale, where:<br />

10 = Totally satisfied<br />

8 = Mostly satisfied<br />

5/6 = Neither satisfied nor dissatisfied<br />

3 = Mostly dissatisfied<br />

1 = Totally dissatisfied<br />

Method<br />

1 Carry out a survey on completion of the project to determine how satisfied the client was with<br />

the service of the consultants and main contractor using the 1 to 10 scale above.<br />

2 The Client Satisfaction – Service performance is the client’s rating out of 10.<br />

3 Measure the benchmark score by plotting the performance on the Client Satisfaction – Service<br />

KPI graph.<br />

Example<br />

During a post-project review, the client scores satisfaction with the service of the consultants and<br />

main contractor during the project at 6 out of 10. Using the Client Satisfaction - Service graph, the<br />

performance score of 6 equates to a benchmark score of 12%.<br />

Note<br />

This question may be asked as part of a more comprehensive survey or post-project review.<br />

2006 UK Economic KPIs - All Construction - Methods of Measurement 5


DEFECTS<br />

Purpose<br />

To assess the impact on the client of any defects at the point of handover.<br />

Definition<br />

The condition of the product/facility with respect to defects at the time of handover, using a 1 to 10<br />

scale, where:<br />

10 = Defect-free<br />

8 = Some defects with no significant impact on client<br />

5/6 = Some defects with some impact on client<br />

3 = Major defects with major impact on client<br />

1 = Totally defective<br />

A defect is a fault which adversely affects the appearance or full intended function of the product.<br />

Point of handover is the time when ownership of the product is transferred from the main contractor<br />

to the commissioning client.<br />

Method<br />

1 Carry out a survey on completion of the project to determine the client’s assessment of the<br />

condition of the facility with respect to defects using the 1 to 10 scale above.<br />

2 The Defects performance is the client’s rating out of 10.<br />

3 Measure the benchmark score by plotting the performance on the Defects KPI graph.<br />

Example<br />

During the inspection at the point of handover, a small number of minor defects are discovered<br />

which can be corrected within the first month of use with minor disruption to the facility. The client<br />

scores the project 7 out of 10. Using the Defects graph, the performance score of 7 equates to a<br />

benchmark score of 23%.<br />

Note<br />

This question may be asked as part of a more comprehensive survey or post-project review<br />

6<br />

2006 UK Economic KPIs - All Construction - Methods of Measurement


PREDICTABILITY -<br />

COST<br />

Purpose<br />

To measure the reliability of cost for a project.<br />

Definition<br />

There are three indicators for Predictability - Cost: project, design and construction:<br />

1 Project: actual cost of the combined design and construction process at Available for Use (C)<br />

less the anticipated cost of the combined design and construction process at Commit to<br />

Invest (A), expressed as a percentage of the anticipated cost of the combined design and<br />

construction process at Commit to Invest (A).<br />

2 Design: actual cost of the design process at Available for Use (C) less the anticipated cost of<br />

the design process at Commit to Invest (A), expressed as a percentage of the anticipated cost<br />

of the design process at Commit to Invest (A).<br />

3 Construction: actual cost of the construction process at Available for Use (C) less the<br />

anticipated cost of the construction process at Commit to Construct (B), expressed as a<br />

percentage of the anticipated cost of the construction process at Commit to Construct (B).<br />

Further information on Key Project Stages A, B and C is given in the Handbook in Step 2: Collect Data.<br />

Method<br />

1 Collect the following data for the project:<br />

• anticipated cost of the project at A<br />

• anticipated cost of design at A<br />

• anticipated cost of construction at B<br />

• actual cost of the project at C<br />

• actual cost of design at C<br />

• actual cost of construction at C.<br />

2 Calculate the Predictability – Cost performance, which is the percentage change between the<br />

later and earlier cost, using the appropriate formula:<br />

Performance (%) predictability cost: project =<br />

Actual project cost at C – Anticipated project cost at A<br />

Anticipated project cost at A<br />

x 100<br />

Performance (%) predictability cost: design =<br />

Actual design cost at C – Anticipated design cost at A<br />

Anticipated design cost at A<br />

x 100<br />

Performance (%) predictability cost: construction =<br />

Actual construction cost at C – Anticipated construction cost at B<br />

x 100<br />

Anticipated construction cost at B<br />

3 Measure the benchmark score by plotting the performance on the appropriate line of the<br />

Predictability - Cost KPI graph<br />

2006 UK Economic KPIs - All Construction - Methods of Measurement 7


PREDICTABILITY -<br />

COST (contd.)<br />

Example<br />

Using the following data for a project:<br />

Estimated cost of project at A<br />

Final cost of project at C<br />

= £3,800k<br />

= £3,965k<br />

Tendered cost of design at A = £500k<br />

Final cost of design at C = £490k<br />

Tendered cost of construction at B<br />

Final cost of construction at C<br />

= £3,400k<br />

= £3,475k<br />

Indicator 1<br />

Predictability Cost: Project (A to C) performance =<br />

£3,965k – £3,800k<br />

£3,800k<br />

x 100 = +4%<br />

Using the Predictability - Cost (Project) graph to calculate a benchmark score, +4% equates to a<br />

benchmark score of 40%.<br />

Indicator 2<br />

£490k – £500k<br />

Predictability cost: design (A to C) performance =<br />

x 100 = –2%<br />

£500k<br />

Using the Predictability - Cost (Design) graph to calculate a benchmark score, -2% equates to a<br />

benchmark score of 79%.<br />

Indicator 3<br />

Predictability cost: construction (B to C) performance =<br />

£3,475k – £3,400k<br />

£3,400k<br />

x 100 = +2%<br />

Using the Predictability - Cost (Construction) graph to calculate a benchmark score, +2% equates to<br />

a benchmark score of 42%.<br />

Notes<br />

The anticipated design cost and construction cost should, where possible be the amounts of the<br />

respective accepted quotations/tenders, agreed target cost or agreed maximum price.<br />

The actual design cost and construction cost should where possible be the amounts of the<br />

respective final accounts.<br />

If these are not available the best available estimate should be used.<br />

Construction cost should include all work in the main contract and should only include site clearance<br />

and enabling work when this is included in the main contract.<br />

Those wishing to achieve on cost delivery as opposed to cost savings should use the above method<br />

but calculate the benchmark score using the Variance Cost Graph contained in the Additional<br />

Performance Indicators book in the KPI Pack.<br />

8<br />

2006 UK Economic KPIs - All Construction - Methods of Measurement


PREDICTABILITY -<br />

TIME<br />

Purpose<br />

To measure the reliability of time for a project.<br />

Definition<br />

There are three indicators for Predictability - Time: project, design and construction:<br />

1 Project: actual duration of the combined design and construction process at Available for Use<br />

(C) less the anticipated duration of the combined design and construction process at Commit<br />

to Invest (A), expressed as a percentage of the anticipated duration of the combined design<br />

and construction process at Commit to Invest (A).<br />

2 Design: actual duration of the design process at Commit to Construct (B) less the anticipated<br />

duration of the design process at Commit to Invest (A), expressed as a percentage of the<br />

anticipated duration of the design process at Commit to Invest (A).<br />

3 Construction: actual duration of the construction process at Available for Use (C) less the<br />

anticipated duration of the construction process at Commit to Construct (B), expressed as a<br />

percentage of the anticipated duration of the construction process at Commit to Construct (B).<br />

Further information on Key Project Stages A, B and C is given in the Handbook in Step 2: Collect Data.<br />

Method<br />

1 Collect the following data for the project:<br />

• anticipated duration of the project at A<br />

• anticipated duration of design at A<br />

• anticipated duration of construction at B<br />

• actual duration of design at B<br />

• actual duration of the project at C<br />

• actual duration of construction at C.<br />

2 Calculate the Predictability – Time performance which is the percentage change between the<br />

anticipated and actual duration, using the appropriate formula:<br />

Performance (%) predictability time: project =<br />

Actual project time at C – Anticipated project time at A<br />

Anticipated project time at A<br />

x 100<br />

Performance (%) predictability time: design =<br />

Actual design time at B – Anticipated design time at A<br />

Anticipated design time at A<br />

x 100<br />

Performance (%) predictability time: construction =<br />

Actual construction time at C – Anticipated construction time at B<br />

Anticipated construction time at B<br />

x 100<br />

3 Measure the benchmark score by plotting the performance on the appropriate line of the<br />

Predictability - Time KPI graph<br />

2006 UK Economic KPIs - All Construction - Methods of Measurement 9


PREDICTABILITY -<br />

TIME (contd.)<br />

Example<br />

Using the following data for a project:<br />

Estimated project time at A<br />

Actual project time at B<br />

Design contract period at A<br />

Actual design time at B<br />

Construction contract period at B<br />

Actual construction period at C<br />

= 104 weeks<br />

= 109 weeks<br />

= 60 weeks<br />

= 68 weeks<br />

= 56 weeks<br />

= 60 weeks<br />

Indicator 1<br />

109 weeks – 104 weeks<br />

Predictability time: Project (A to C) performance =<br />

x 100 = +5%<br />

104 weeks<br />

Using the Predictability - Time (Project) graph to calculate a benchmark score, +5% equates to a<br />

benchmark score of 40%.<br />

Indicator 2<br />

68 weeks – 60 weeks<br />

Predictability Time: Design (A to B) performance =<br />

x 100 = +13%<br />

60 weeks<br />

Using the Predictability - Time (Design) graph to calculate a benchmark score, +13% equates to a<br />

benchmark score of 33%.<br />

Indicator 3<br />

60 weeks – 56 weeks<br />

Predictability Time: Construction (B to C) performance =<br />

x 100 = +7%<br />

56 weeks<br />

Using the Predictability - Time (Construction) graph to calculate a benchmark score, +7% equates to<br />

a benchmark score of 31%.<br />

Notes<br />

The anticipated design time and construction time should, where possible be the amount of time<br />

stated in the respective accepted quotations/tenders.<br />

The actual design time and construction time should where possible be the amount of time elapsed<br />

between commence on site and completion of the project.<br />

If these are not available the best estimate should be used.<br />

Construction time should include all work in the main contract and should only include site clearance<br />

and enabling work when this is included in the main contract.<br />

Those wishing to achieve on time delivery as opposed to time savings should use the above method<br />

but calculate the benchmark score using the Variance Time Graph contained in the Additional<br />

Performance Indicators Book in the KPI Pack.<br />

10<br />

2006 UK Economic KPIs - All Construction - Methods of Measurement


PROFITABILITY<br />

Purpose<br />

To measure the profitability of a construction company before tax and interest.<br />

Definition<br />

Company profit before tax and interest as a percentage of sales.<br />

Method<br />

1 Collect the following information for a company for a complete year:<br />

• value of profit before tax and interest<br />

• value of sales.<br />

2 Calculate the Profitability performance using the formula:<br />

Performance (%) profitability =<br />

Profit before tax and interest<br />

Value of sales<br />

x 100<br />

3 Measure the benchmark score by plotting the performance on the Profitability KPI graph.<br />

Example<br />

Using the following data for a company:<br />

Profit before tax and interest<br />

= £2.10m<br />

Value of sales = £30m<br />

Profitability performance (%) =<br />

£2.10m<br />

£30m<br />

x 100 = +7.0%<br />

Using the Profitability graph to calculate a benchmark score, +7.0% equates to a benchmark score<br />

of 47%.<br />

Note<br />

Organisations wishing to calculate profitability at a project rather than company level should refer to<br />

the method given in the Handbook under Further Help and Information.<br />

2006 UK Economic KPIs - All Construction - Methods of Measurement 11


PRODUCTIVITY<br />

Purpose<br />

To determine the value-added per employee of a construction company.<br />

Definition<br />

Company value added per employee per year (£).<br />

Method<br />

1 Collect the following information for a company for a complete year:<br />

• value of sales<br />

• total value of sub-contracted services<br />

• total value of goods supplied<br />

• the average number of full-time equivalent employees.<br />

Two people each working half-time make one full-time equivalent employee.<br />

2 Calculate the Productivity performance using the formula:<br />

Performance (£) =<br />

Value of sales in the year - total value of sub-contracted services - total value of goods supplied<br />

Average number of full-time equivalent employees in the year<br />

3 Measure the benchmark score by plotting the performance on the Productivity KPI graph.<br />

Example<br />

Using the following data for a company:<br />

Value of sales in the year = £30m<br />

Total value of sub-contracted services = £10m<br />

Total value of goods supplied = £12m<br />

Average number of full-time equivalent employees in the year = 280<br />

£30m – £10m – £12m<br />

Productivity performance = = £28,571<br />

280<br />

Using the Productivity graph to calculate a benchmark score, £28,571 equates to a benchmark score<br />

of 33%.<br />

Note<br />

Organisations wishing to calculate Productivity at a project rather than company level should refer to<br />

the method given in the Handbook under Further Help and Information.<br />

12<br />

2006 UK Economic KPIs - All Construction - Methods of Measurement


SAFETY<br />

Purpose<br />

To measure a company’s safety performance.<br />

Definition<br />

Reportable accidents per 100,000 employed by the company per year – the Accident Incidence<br />

Rate (AIR).<br />

Reportable accidents are defined by HSE as fatalities, major injuries, and over 3 day accidents to<br />

employees, self-employed and members of the public.<br />

Two people each working half time for the year are equivalent to one person employed.<br />

Method<br />

1 Collect the following data for the company for a complete year:<br />

• the number of reportable accidents. On a properly managed site, details of all accidents will<br />

be recorded in the accident book<br />

• the average number employed by the company, including self-employed<br />

and sub-contractors.<br />

2 Calculate the Safety performance using the formula:<br />

Performance (AIR) safety =<br />

Number of reportable accidents in the year<br />

Average number employed in the year including self-employed and sub-contractors<br />

x 100,000<br />

3 Measure the benchmark score by plotting the performance on the ‘All Companies’ or the<br />

‘Companies with turnover greater than £10m’ line on the Safety KPI graph as appropriate.<br />

Example<br />

A company with an annual turnover greater than £10m collects the following data on its safety<br />

performance:<br />

Number of reportable accidents in the year = 5<br />

Average number directly employed in the year = 72<br />

Average number of sub-contractors employed in the year = 558<br />

Safety performance (AIR) =<br />

5<br />

72 + 558<br />

x 100,000 = 794<br />

Using the ‘Companies with Turnover Greater than £10m’ line on the Safety graph to calculate<br />

a benchmark score, the AIR of 794 equates to a benchmark score of 61%.<br />

Notes<br />

The Health and Safety Executive estimated that only 50% of reportable accidents are actually reported.<br />

The Safety KPI graph has been adjusted to take account of this.<br />

AIR makes no allowance for variations such as part-time work or overtime. Many organisations measure<br />

accidents per 100,000 hours worked (the Accident Frequency Rate, or AFR), which takes into account<br />

variations in working hours. A method of converting AIR to AFR is given in the Handbook under Further<br />

Help and Information.<br />

Companies wishing to calculate Safety at a project rather than company level should use the formula<br />

given in the Handbook under Further Help and Information.<br />

2006 UK Economic KPIs - All Construction - Methods of Measurement 13


CONSTRUCTION COST<br />

Purpose<br />

To measure the change in real cost of construction from one year to the next.<br />

If two identical structures were built in successive years, the Construction Cost KPI shows how much<br />

the construction costs have changed in the year.<br />

It is unusual to have two identical structures, so data from similar projects has to be normalised to<br />

enable comparison to be made. Normalisation is the statistical method of removing the effects of<br />

specification, location, function, size and inflation.<br />

Definition<br />

The normalised construction cost of a project in the current year, less the construction cost of a<br />

similar project one year earlier, expressed as a percentage of the construction cost of the similar<br />

project one year earlier.<br />

Method<br />

There are two methods of measuring Construction Cost. Method 1 is a simple ‘rule of thumb’ which<br />

may be used as a quick and approximate method. Method 2 is more complex, more reliable, and<br />

most accurately follows the method used to produce the published KPI graphs.<br />

Method 1<br />

(‘rule of<br />

thumb’)<br />

The following ‘rule of thumb’ method of measurement may be used in place of the more complex<br />

‘accurate method’ (Method 2). The tender price referred to below can be either for the whole facility<br />

or can be a unit rate (e.g. cost per m 2 of the facility).<br />

1 Collect the following data:<br />

• tender price for the current project (TP1)<br />

• tender price for comparison project (one year earlier) (TP2).<br />

2 Calculate the following for the current project:<br />

• the percentage adjustment for specification differences from the previous year’s<br />

project (Spec %)<br />

• the percentage adjustment for location difference from the previous year’s project (Loc %)<br />

• the percentage adjustment for resource cost inflation since the previous year’s project (Inf %).<br />

3 Calculate the Construction Cost performance using the formula:<br />

(((TP1 +/- Spec %) +/- Loc %) +/- Inf %) – TP2<br />

Performance (%) =<br />

TP2<br />

x 100<br />

4 Measure the benchmark score by plotting the performance on the Construction Cost KPI graph.<br />

Example<br />

(Method 1)<br />

Calculation of Construction Cost using data from two office building projects.<br />

Current project:<br />

Tender Price = £930/ m 2<br />

Specification<br />

Location<br />

Resource Cost Inflation<br />

= Calculated at 5% higher than comparison project<br />

= Calculated at 8% higher than comparison project<br />

= Calculated at 3% higher than comparison project<br />

Comparison project (constructed a year earlier):<br />

Tender Price = £805/ m 2<br />

Construction Cost performance =<br />

(((£930 – 5%) – 8%) – 3%) – £805<br />

£805<br />

x 100 = –2.0%<br />

14<br />

2006 UK Economic KPIs - All Construction - Methods of Measurement


CONSTRUCTION COST (contd.)<br />

Example<br />

(Method 1)<br />

(contd.)<br />

Method 2<br />

(accurate)<br />

Using the Construction Cost graph to calculate a benchmark score, -2% equates to a benchmark<br />

score of 53%.<br />

1 Collect the following data for the both the current project and the comparison project<br />

(one year earlier):<br />

• project tender price index. This may be obtained from DTI or BCIS.<br />

• the location factor (if applicable) from tables published by DTI or BCIS<br />

• the resource cost index from tables published by DTI or BCIS<br />

• the size factor (where available) from tables published by DTI or BCIS<br />

The data needed to normalise a project is published quarterly by DTI and BCIS (see the Further<br />

Help and Information section of the Handbook).<br />

2 Calculate the capital cost index (CCI) for both projects using the formula:<br />

Project Capital Cost Index =<br />

(CCI)<br />

Tender Price Index<br />

Location Factor x Function Factor x Size Factor<br />

x<br />

100<br />

Resource Cost Index<br />

3 Calculate the Construction Cost performance using the formula:<br />

Performance (%) construction cost =<br />

Current Project CCI – Previous Project CCI<br />

Previous Project CCI<br />

x 100<br />

4 Measure the benchmark score by plotting the performance on the Construction Cost KPI graph.<br />

Example<br />

(Method 2)<br />

Calculation of a project Capital Cost Index for a £20m new build road construction project in the south<br />

east of England (whose calculated tender price index is 110 in the first quarter of the current year) using<br />

adjustment factors contained in the tables published in DTI’s Quarterly Building Price and Cost Indices:<br />

Tender Price Index = 110 (calculated)<br />

Location Factor = 1.09 (from Table 7.4)<br />

Function Factor = 0.99 (from Table 8.2)<br />

Size Factor = 0.92 (from Table 9.2)<br />

Resource Cost Index = 108 (from Table 12.2)<br />

Capital Cost Index =<br />

110<br />

1.09 x 0.99 x 0.92<br />

x<br />

100<br />

108 = 103<br />

If an equivalent calculation, carried out for a similar project in the previous year, had provided a Project<br />

Capital Cost Index of 105, then the Construction Cost performance (change in real cost of construction)<br />

between these two projects would be:<br />

103 – 105<br />

Construction Cost performance = x 100 = –1.9%<br />

105<br />

Using the Construction Cost graph to calculate a benchmark score, -1.9% equates to a benchmark<br />

score of 53%.<br />

2006 UK Economic KPIs - All Construction - Methods of Measurement<br />

15


CONSTRUCTION TIME<br />

Purpose<br />

To measure the change in construction time from one year to the next.<br />

If two identical structures were built in successive years, the Construction Time KPI shows how much<br />

the construction times have changed in the year.<br />

It is unusual to have two identical structures, so data from similar projects has to be normalised to<br />

enable comparison to be made. Normalisation is the statistical method of removing the effects of<br />

specification, location, function, size and inflation.<br />

Definition<br />

The normalised time to construct a project in the current year, less the time to construct a similar<br />

project one year earlier, expressed as a percentage of the time to construct a similar project one<br />

year earlier.<br />

Method<br />

There are two methods of measuring Construction Time. Method 1 is a simple ‘rule of thumb’ which<br />

may be used as a quick and approximate method. Method 2 is more complex, more reliable, and most<br />

accurately follows the method used to produce the published KPI graphs.<br />

Method 1<br />

(‘rule of<br />

thumb’)<br />

1 Collect the following data:<br />

• contract period for the current project (CP1)<br />

• contract period for the comparison project (one year earlier) (CP2).<br />

2 Calculate the following for the current project:<br />

• the percentage adjustment that needs to be made to time due to specification differences<br />

from the previous year’s project (Spec %)<br />

• the percentage adjustment that needs to be made to time due to the size difference from<br />

the previous year’s project (Size %).<br />

3 Calculate the Construction Time performance using the formula:<br />

Performance (%) =<br />

((CP1 +/- Spec %) +/- Size %) – CP2<br />

CP2<br />

x 100<br />

4 Measure the benchmark score by plotting the performance on the Construction Time KPI graph.<br />

Example<br />

(Method 1)<br />

Calculation of Construction Time using data from two office building projects.<br />

Current project:<br />

Contract period<br />

Specification<br />

Size<br />

= 67 weeks<br />

= Calculated at 8% higher than the comparison project<br />

= Calculated at 10% smaller than the comparison project<br />

Comparison project (constructed a year earlier):<br />

Contract period<br />

Construction Time performance =<br />

= 71 weeks<br />

((67 weeks – 8%) + 10%) – 71 weeks<br />

71 weeks<br />

x 100 = –4.5%<br />

Using the Construction Time graph to calculate a benchmark score, -4.5% equates to a benchmark<br />

score of 58%.<br />

16<br />

2006 UK Economic KPIs - All Construction - Methods of Measurement


CONSTRUCTION TIME (contd.)<br />

Method 2<br />

(accurate)<br />

1 Collect the following data for the both the current project and the comparison project<br />

(one year earlier):<br />

• contract sum (CS)<br />

• contract period (CP)<br />

• the location factor (LF), if applicable, from tables published by DTI or BCIS<br />

• the function factor (FF), if applicable, from tables published by DTI or BCIS<br />

• the size factor (SF), where available, from tables published by DTI or BCIS<br />

• project tender price index (TPI). This may be obtained from DTI or BCIS.<br />

The data needed to normalise a project is published quarterly by DTI and BCIS (see the Further<br />

Help and Information section of the Handbook).<br />

2 Calculate the Construction Time Factor (CTF) for both projects using the formula:<br />

CTF =<br />

CP ÷<br />

CS (£000s) 100<br />

(<br />

x<br />

)<br />

LF x FF x SF<br />

3 Calculate the Construction Time performance using the formula:<br />

TPI<br />

Current Project CTF – Comparison Project CTF<br />

Performance (%) = x 100<br />

Comparison Project CTF<br />

4 Measure the benchmark score by plotting the performance on the Construction Time KPI graph.<br />

Example<br />

(Method 2)<br />

Calculation of a project Construction Time Factor for a new factory project built in the first quarter of<br />

the current year in the south east of England using the tables published in DTI’s Quarterly Building<br />

Price and Cost Indices:<br />

Contract Period<br />

= 15 months<br />

Contract Sum<br />

= £5,000k<br />

Location Factor = 1.03 (from Table 2.4)<br />

Function Factor = 1.00 (from Table 3.4)<br />

Size Factor<br />

= Not applicable<br />

Tender Price Index = 108 (from Table 1.3)<br />

( )<br />

5,000 100<br />

Construction Time Factor = 15 ÷ x = 0.00334<br />

1.03 x 1.00 x NA 108<br />

If a similar calculation, carried out for an equivalent project in the previous year, had provided a<br />

Construction Time Factor 0.00347, then the Construction Time performance (change in time for<br />

construction) between these two projects would be:<br />

0.00334 – 0.00347<br />

Construction Time performance = x 100 = –3.7%<br />

0.00347<br />

Using the Construction Time graph to calculate a benchmark score, -3.7% equates to a benchmark<br />

score of 44%.<br />

2006 UK Economic KPIs - All Construction - Methods of Measurement 17


18<br />

2006 UK Economic KPIs - All Construction - Methods of Measurement


ECONOMIC KPI<br />

DATA COLLECTION FORM (Page 1 of 5)<br />

Company/Project Name<br />

Data collected by<br />

Date<br />

KPI Data Result<br />

Client Satisfaction How satisfied was the client with the quality of the finished<br />

– Product product, using a 1-10 scale:<br />

Totally<br />

dissatisfied<br />

Mostly<br />

dissatisfied<br />

Neither satisfied<br />

nor dissatisfied<br />

Mostly<br />

satisfied<br />

Totally<br />

satisfied<br />

1 2 3 4 5 6 7 8 9 10<br />

Client Satisfaction How satisfied was the client with the service provided by the<br />

– Service consultants and main contractor, using a 1-10 scale:<br />

Totally<br />

dissatisfied<br />

Mostly<br />

dissatisfied<br />

Neither satisfied<br />

nor dissatisfied<br />

Mostly<br />

satisfied<br />

Totally<br />

satisfied<br />

1 2 3 4 5 6 7 8 9 10<br />

Defects<br />

What was the condition of the facility with respect to defects at the<br />

time of handover, using a 1-10 scale:<br />

Totally<br />

defective<br />

Major defects,<br />

major impact<br />

on Client<br />

Some defects, with<br />

some impact<br />

on Client<br />

Some defects,<br />

with no significant<br />

impact on Client<br />

Defect free<br />

1 2 3 4 5 6 7 8 9 10<br />

Predictability<br />

What was the estimated cost of design and construction at Commit to Invest<br />

– Cost (Project) (i.e. when the project was originally sanctioned)?<br />

£______________________(A)<br />

What was the final cost of design and construction at Available for Use?<br />

£______________________(C)<br />

Calculate<br />

£C________ - £A________<br />

£A________<br />

x 100<br />

+ –<br />

%<br />

2006 UK Economic KPIs - All Construction - Methods of Measurement 19


ECONOMIC KPI<br />

DATA COLLECTION FORM (Page 2 of 5)<br />

KPI Data Result<br />

Predictability What was the estimated cost of design at Commit to Invest<br />

– Cost (Design) (i.e. when the project was originally sanctioned)?<br />

£______________________(A)<br />

What was the final cost of design at Available for Use?<br />

£______________________(C)<br />

Calculate<br />

£C________ - £A________<br />

£A________<br />

x 100<br />

+ –<br />

%<br />

Predictability What was the estimated cost of construction at Commit to Construct<br />

– Cost (e.g. the tender sum)?<br />

(Construction)<br />

£______________________(B)<br />

What was the final cost of construction at Available for Use<br />

(e.g. the contractor’s final account)?<br />

£______________________(C)<br />

Calculate<br />

£C________ - £B________<br />

£B________<br />

x 100<br />

+ –<br />

%<br />

Predictability What was the estimated duration of the design and construction at<br />

– Time (Project) Commit to Invest (i.e. when the project was originally sanctioned)?<br />

Weeks_________________(A)<br />

What was the actual duration of the design and construction at<br />

Available for Use?<br />

Weeks_________________(C)<br />

Calculate<br />

C________ - A________<br />

A________<br />

x 100<br />

+ –<br />

%<br />

Predictability What was the estimated duration of the design phase at Commit to<br />

– Time (Design) Invest (i.e. when the project was originally sanctioned)?<br />

Weeks_________________(A)<br />

What was the actual duration of the design phase at Commit to<br />

Construct (i.e. when construction actually commenced)?<br />

Weeks_________________(B)<br />

Calculate<br />

B________ - A________<br />

A________<br />

x 100<br />

+ –<br />

%<br />

20<br />

2006 UK Economic KPIs - All Construction - Methods of Measurement


ECONOMIC KPI<br />

DATA COLLECTION FORM (Page 3 of 5)<br />

KPI Data Result<br />

Predictability What was the estimated duration of the construction phase at<br />

– Time Commit to Construct (e.g. the contract period)?<br />

(Construction)<br />

Weeks_________________(B)<br />

What was the actual duration of the construction period Available<br />

for Use?<br />

Weeks_________________(C)<br />

Calculate<br />

C________ - B________<br />

B________<br />

x 100<br />

+ –<br />

%<br />

Safety<br />

(Accident<br />

Incidence Rate)<br />

How many reportable accidents have you had in the past year<br />

(i.e. fatalities, major injuries, and over 3 day accidents to employees,<br />

your sub-contractors and members of the public)?<br />

Number________________(A)<br />

What was the average number of full-time equivalent employees you<br />

had in the year? (2 people each working half-time make 1 full-time<br />

equivalent)<br />

Number________________(B)<br />

How many sub-contractors did you employ on average during the year?<br />

Number________________(C)<br />

Calculate<br />

A________<br />

B________ +C________<br />

x 100,000<br />

Productivity<br />

What was the value of sales last year?<br />

£________________(A)<br />

What was the total value of sub-contracted services last year?<br />

£________________(B)<br />

What was the total value of goods supplied last year?<br />

£________________(C)<br />

What was the number of full-time equivalent employees last year?<br />

£________________(D)<br />

Calculate<br />

£A_______ -£B_______ -£C_______<br />

D_______<br />

£<br />

2006 UK Economic KPIs - All Construction - Methods of Measurement 21


ECONOMIC KPI<br />

DATA COLLECTION FORM (Page 4 of 5)<br />

KPI Data Result<br />

Profitability<br />

What was the profit before interest and tax last year?<br />

£______________________(A)<br />

What was the value of sales last year?<br />

£______________________(B)<br />

Calculate:<br />

£A________<br />

£B________<br />

x 100<br />

+ –<br />

%<br />

Construction Cost<br />

The calculations for Construction Cost are complex – refer to the<br />

Methods of Measurement.<br />

Select a typical project completed a year ago. What was the<br />

tender price?<br />

£______________________(A)<br />

Select a similar project completed recently. What was the tender price?<br />

£______________________(B)<br />

What adjustment needs to be applied to the most recent project to<br />

allow for specification differences between them?<br />

Plus/Minus___________%(C)<br />

(Note: If specification this year is higher, the correction should be<br />

minus to bring this year in line with last year).<br />

What adjustment needs to be applied to allow for location<br />

differences between them?<br />

Plus/Minus___________%(D)<br />

(Note: If location this year is more expensive, the correction should<br />

be minus to bring this year in line with last year).<br />

What adjustment needs to be made to allow for inflation between<br />

them?<br />

Plus/Minus___________%(E)<br />

(Note: If inflation this year is higher, the correction should be minus<br />

to bring this year in line with last year).<br />

Calculate: (((B______ +C______) +D______) +E______) – A______<br />

A______<br />

x 100<br />

+ –<br />

%<br />

22<br />

2006 UK Economic KPIs - All Construction - Methods of Measurement


ECONOMIC KPI<br />

DATA COLLECTION FORM (Page 5 of 5)<br />

KPI Data Result<br />

Construction Time<br />

The calculations for Construction Time are complex – refer to the<br />

Methods of Measurement.<br />

Select a typical project completed a year ago. What was the<br />

contract period?<br />

______________________(A)<br />

Select a similar project completed recently. What was the contract period?<br />

£______________________(B)<br />

What adjustment needs to be applied to the most recent project to<br />

allow for specification differences between them?<br />

Plus/Minus___________%(C)<br />

(Note: If specification this year is higher, the correction should be<br />

minus to bring this year in line with last year).<br />

What adjustment needs to be applied to allow for location<br />

differences between them?<br />

Plus/Minus___________%(D)<br />

(Note: If inflation this year is higher, the correction should be minus<br />

to bring this year in line with last year).<br />

Calculate: (((B______ +/-C)______+/-D)______) – A______<br />

A______<br />

x 100%<br />

+ –<br />

%<br />

Now you have obtained your performance results, calculate your<br />

benchmark scores and plot a radar chart.<br />

2006 UK Economic KPIs - All Construction - Methods of Measurement 23


24<br />

2006 UK Economic KPIs - All Construction - Methods of Measurement


CONSTRUCTING EXCELLENCE<br />

<strong>Constructing</strong> <strong>Excellence</strong> provides a range of services to help implement KPIs:<br />

Helpdesk<br />

A direct point of contact to answer initial enquiries<br />

about KPIs. Tel 0845 605 55 56<br />

The KPI Pack<br />

A source of comprehensive information for<br />

organisations wishing to use KPIs.<br />

The Housing KPI Toolkit<br />

Vital information for using KPIs in the housing sector.<br />

KPIZone<br />

A website dedicated to KPIs. Visit www.kpizone.com<br />

for free information on KPIs and benchmarking clubs.<br />

KPIZone also has a subscription service from which you<br />

can download the information contained in the KPI Pack<br />

and Housing KPI Toolkit.<br />

KPI Masterclasses<br />

An introduction to the benefits and use of the<br />

Construction Industry KPIs. Each Masterclass<br />

explores the importance of measuring performance<br />

with the help of practical examples, a step by step<br />

guide to their use, and presentations by organisations<br />

that have successfully implemented KPIs.<br />

Website<br />

An extensive database of best practice activities,<br />

information and resources is available on<br />

www.constructingexcellence.org.uk .<br />

At <strong>Constructing</strong> <strong>Excellence</strong> we bring distinctive value to our customers’ businesses<br />

through six core activities:<br />

Innovation and Research:<br />

Members shape and take part in <strong>Constructing</strong><br />

<strong>Excellence</strong>’s research programme, from major action<br />

research projects to working groups and confidential<br />

learning clubs.<br />

Measurement and Diagnostics:<br />

<strong>Constructing</strong> <strong>Excellence</strong> has led the way in industry<br />

performance measurement, with diagnostic tools<br />

central to its activities. Members receive:<br />

• Complimentary KPI pack<br />

• Complimentary introductory Explorer<br />

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• 20% discount on KPI Masterclasses.<br />

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Improvement:<br />

<strong>Constructing</strong> <strong>Excellence</strong> is able to offer members<br />

consultancy tailored to their business requirements. This<br />

service includes free or discounted access to <strong>Constructing</strong><br />

<strong>Excellence</strong> publications, and discounts on facilitation and<br />

mentoring services and conferences.<br />

Business-to-Business Networks:<br />

Existing members see real benefits in these networks,<br />

meeting with other like minded individuals and<br />

companies, building relationships, sharing best practice<br />

and developing business contacts.<br />

Showcasing and Exemplars:<br />

One of the key benefits of membership is being able to<br />

demonstrate participation to key stakeholders such as<br />

customers, employees, suppliers and investors.<br />

<strong>Constructing</strong> <strong>Excellence</strong> provides members:<br />

• Opportunities to showcase projects<br />

• Opportunities to share and learn from<br />

members’ exemplars<br />

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leader at <strong>Constructing</strong> <strong>Excellence</strong> events.<br />

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<strong>Constructing</strong> <strong>Excellence</strong> works closely with government,<br />

strategic partners, firms and influencer organisations to<br />

shape the future of the sector. Members have the chance<br />

to take an active role in influencing Government priorities<br />

and to have input into the formation of future policy at<br />

regular forums and conferences.<br />

CONSTRUCTING EXCELLENCE<br />

Warwick House, 25 Buckingham Palace Road, London, SW1W 0PP<br />

0845 605 55 56<br />

(calls charged at local rate)<br />

email: helpdesk@constructingexcellence.org.uk<br />

www.constructingexcellence.org.uk<br />

2006 UK Economic KPIs - All Construction - Methods of Measurement 25


CONSTRUCTING EXCELLENCE<br />

Warwick House<br />

25 Buckingham Palace Road<br />

London<br />

SW1W 0PP<br />

Tel: 0845 605 55 56<br />

Fax: 020 7592 1101<br />

E-mail: helpdesk@constructingexcellence.org.uk<br />

Website: www.constructingexcellence.org.uk<br />

In Partnership with<br />

Published by <strong>Constructing</strong> <strong>Excellence</strong><br />

ISBN: 1-905033-17-6<br />

Construction Industry KPI Pack 2006/Housing KPI Toolkit 2006<br />

Electronic Copy

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