Site Chamber Tests
These tests are similar to the laboratory tests but smaller in scope. A chamber is erected around an area of curtain wall or a window on site, and the 3 basic tests conducted: Air Infiltration, Water Penetration, Structural Load, and Water Penetration repeated. Unlike the laboratory tests, the structural load cannot be exceeded, because this is part of the finished work. AAMA recommends this test as a verification of workmanship on site given that the design has already been verified in the lab. Sometimes the pass fail criteria levels are lowered for the site chamber tests. It should, of course be conducted early on in the installation phase so that any problems can be corrected before too much of the work is completed. It should never be used at the end of the installation to validate the curtain wall as a precedent to final or further payment.