Contractual tree for building design and construction
A contractual tree is a diagram illustrating the contractual relationship between the parties involved in a project. This might include contracts between; funders, the client, consultants, sub-consultants, contractors, sub-contractors and suppliers and may include ‘secondary’ agreements which are associated with the 'primary' contracts, such as collateral warranties. On complex projects such as a PFI projects it may include other project agreements such as concession agreements.
The contractual tree only shows legal relationships, it does not set out reporting lines or limits of authority and is not the same as an organisation chart. For example, on construction management projects, trade contractors might report to the construction manager, but their legal relationship is with the client.
 Related articles on Designing Buildings Wiki
Featured articles and news
UK-GBC green paper proposes more powers for cities on new-build housing.
The Pompidou Centre – not a monument but an event.
The Chartered Institute of Building restructures and launches 29 new local hubs.
Designing Buildings Wiki talks to the founder of the world's first indoor biophilic gym, now open in London.
£1.3bn Swansea Bay project to be backed as a 'pathfinder' for other tidal lagoon projects.
Designs released for a proposed Las Vegas stadium to entice the Oakland Raiders.
Have a look at these award-winning concept designs for a thermal bath in Latvia.
Flagship project no longer "a going concern" according to the Garden Bridge Trust as funding slows.
How the work of 20th century urbanist Jane Jacobs continues to resonate in light of the government's garden village plans.
New landmark for the Ecuadorean capital of Quito utilises a sinuous facade mold system.
Have a look at this glass piano and violin building in China.