B141/CMA and B801/CMA are based on the premise that a separate contractor also withdraws a contract with the owner. The Owner-Contractor contract is managed jointly by the architect and the site manager in accordance with A201/CMA, 1992. The agreement divides the site manager`s services into two phases: the pre-construction phase and the construction phase, parts of which can take place simultaneously to speed up the process. A131CMc2003 is coordinated for use with A2011997, general conditions of the construction contract, and B1511997, standard form of the agreement between the owner and the architect. For the CMa, the updated C132 offers other opportunities and risks of liability than its predecessor, the C132-2009.