Contractor's working schedule
Some construction contracts, in particular in the USA, require that the contractor produces a contractor’s working schedule. This is a critical path method (CPM) logic diagram used by the contractor, not only to plan the works, but also to record actual progress and to show how the remaining works will be completed. This is not a static schedule but is maintained by the contractor throughout the duration of the works and published periodically as a form of reporting.
In the UK, the Chartered Institute of Building’s (CIOB) Contract for Complex Projects (CPC 2013), requires that the contractor produces a working schedule, (sometimes referred to as the contractor’s working schedule) which CIOB describe as ‘a resource and cost-loaded critical path network’.
The working schedule is a digital, quality-controlled, critical path network, used to manage time, and updated with progress data such that it automatically calculates the construction end date for the works.
Cost management is carried out by reference to values attributed to the activities in the schedule, such that the schedule constantly calculates the value of work done to date and predicts the out-turn cost of the works. Payment is based upon work properly done according to the working schedule.
CIOB suggest that the working schedule is prepared at three levels of density. At low and medium density, activity durations may be estimated and linked with activity-related logic. At high density (the short-term look ahead) activity durations are calculated by reference to resources and achievable productivity and linked by resource and location-related logic.
NB In November 2015, the Complex Projects Contract was updated and renamed the Time and Cost Management Contract.
[edit] Find out more
[edit] Related articles on Designing Buildings Wiki
- Activity schedule.
- Chartered Institute of Building.
- Construction contractor.
- Contract for Complex Projects
- Contractor’s master programme.
- Milestones.
- Noise nuisance.
- Programme.
- Schedule.
- Schedule of work.
- Scheduling construction activities.
- Time management of construction projects.
- Time and Cost Management Contract.
- What hours are construction sites allowed to operate?
- Workmanship in construction.
[edit] External references
Featured articles and news
Great British Energy install solar on school and NHS sites
200 schools and 200 NHS sites to get solar systems, as first project of the newly formed government initiative.
600 million for 60,000 more skilled construction workers
Announced by Treasury ahead of the Spring Statement.
The restoration of the novelist’s birthplace in Eastwood.
Life Critical Fire Safety External Wall System LCFS EWS
Breaking down what is meant by this now often used term.
PAC report on the Remediation of Dangerous Cladding
Recommendations on workforce, transparency, support, insurance, funding, fraud and mismanagement.
New towns, expanded settlements and housing delivery
Modular inquiry asks if new towns and expanded settlements are an effective means of delivering housing.
Building Engineering Business Survey Q1 2025
Survey shows growth remains flat as skill shortages and volatile pricing persist.
Construction contract awards remain buoyant
Infrastructure up but residential struggles.
Home builders call for suspension of Building Safety Levy
HBF with over 100 home builders write to the Chancellor.
CIOB Apprentice of the Year 2024/2025
CIOB names James Monk a quantity surveyor from Cambridge as the winner.
Warm Homes Plan and existing energy bill support policies
Breaking down what existing policies are and what they do.
Treasury responds to sector submission on Warm Homes
Trade associations call on Government to make good on manifesto pledge for the upgrading of 5 million homes.
A tour through Robotic Installation Systems for Elevators, Innovation Labs, MetaCore and PORT tech.
A dynamic brand built for impact stitched into BSRIA’s building fabric.
BS 9991:2024 and the recently published CLC advisory note
Fire safety in the design, management and use of residential buildings. Code of practice.