Microsoft Word ppp report summary doc

Construction 
contract 
PPP
Design and 
build 
contract 
 
detailed design 
construction 
Performance 
requirements 
contract 
 
Performance 
requirements 
contract with 
complete 
maintenance & 
operation 
responsibility 
 
detailed design 
construction 
maintenance 
(extended 
guarantee period) 
ssystem design
(partially) 
detailed design 
construction 
long-term 
maintenance and 
operation 
financing
ssystem design 
(partially) 
detailed design 
construction 
long-term 
maintenance and 
operations 
Project forms – 
contractor’s undertakings 

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4 
Construction contracts 
The client is responsible for detailed design and engages a contractor for construction 
work. The contractor can in turn engage subcontractors.
Design and build contracts 
The client is responsible for a programme document and engages a contractor that is 
responsible for both detailed design and construction. Pure design and build contracts 
are not especially common in the road and rail sectors. The contractors’ design 
obligations are often limited, expressed as “controlled design and build” and 
“construction contracts with design responsibility”. 
Performance requirements contract 
Largely as “pure” as a design and build contract but with a longer maintenance 
obligation after opening to traffic, often as an extended guarantee period, which can be 
seen as a step towards life-cycle thinking.