Percentage of construction and demolition waste recycled.
The Construction Benchmarking System uses a relatively simple measure of the square metre price. This is a KPI that is calculated on the basis of the project’s realised price and the total floor area. The square metre price is only calculated for new builds and refurbishment projects.
The square metre price includes the client’s costs for contractors, consultants, architects, hauliers, etc. It includes costs for dismantling and demolition, if any, of existing structures and site development, if these works are being carried out in connection with the other construction contracts.
It also includes costs for establishing the shell, exterior and interior fitting-out, heating and plumbing, electrical installations and costs for client-supplied materials and equipment supplies; however, the square metre price does not include furniture, process equipment and client consultancy.
However, caution should be exercised in connection with benchmarking across categories due to the disparities between the various categories.
This KPI is the actual construction time for the contract that formed the basis of the contractor’s bid (excluding any extra works). The construction time or the construction phase is consequently defined as the period that elapses between the contractor or joint venture starting up the work and until actual handing over. From this should be deducted project alterations, expressed in calendar days.
The following three factors are used for calculating the KPI: the date of start-up of the construction phase, the actual handing-over date and the alterations that have been agreed with the client or have been caused by external factors. In both cases, the alterations are expressed in working days converted to calendar days.
The actual project construction manhours are recorded and analysed against the original planned (baseline)construction manhours on a monthly basis. Variance could be expressed as a percentage from the baseline.
The time schedule accuracy in estimating the start time of each activity.
The KPI weights the defects remedied in the first year following handing over, based on manhour consumption. Besides these defects, the work often comprises various extra works or additional services. If it has been agreed that these additional services may be carried out after handing over they are not included in the KPI. The man hours used to remedy defects in connection with the one-year inspection are included as an estimated figure.
The KPI is expressed in man hours worked and measured against the contract sum.
This KPI is calculated for new builds and repair and maintenance projects, but not for infrastructure projects. Besides, the work intensity is only calculated when the number of man hours is recorded for all contracts of relevance to a construction project. This means that the work intensity is calculated at project level and not for individual contracts.
The work intensity is defined as the number of man hours worked by hourly paid labour per m2 total floor area. The work intensity is intended to show the average number of man hours used to construct, assemble and erect one square metre of the building at the building site. If the degree of prefabrication is increased, it will thus reduce the work intensity.
Design, construction, maintenance and administration costs per km of various infrastructure