Curtain walls have to keep the weather out and the people in.
Curtain wall testing procedure.
For these tests an airtight chamber is constructed on one side of the specimen.
We provide design review and full scale testing to make sure that these systems do this reliably for the life of the building.
Significance and use 5 1 this test method is a standard procedure for determining the resistance to water penetration under uniform or cyclic static air pressure differences of installed exterior windows skylights curtain walls and doors.
In the case of a unitized curtain wall system a vertical module joint should also be included within the test area.
After the cure period take a razor blade and under cut one end of the tab exposing a flap that can be grasped with fingers.
The chosen area is soaked from the lowest horizontal brace to any adjacent vertical framing.
Typically the height of the test area should be at least one full floor storey high.
The air pressure differences acting across a building envelope vary greatly.
During testing the interior face of the test area is inspected for water leakage.
During the test a member of the testing team will be inside to monitor the wallsand check for any leakage.
Air infiltration water penetration and structural load.
The height of the test area should include at least one expansion or stack joint at least one spandrel section and one vision section.
The astm e 1105 standard test method for field determination of water penetration of installed exterior windows skylights doors and curtain walls is used for water penetration testing and the astm e 783 standard test method for field measurement of air leakage through installed exterior windows and doors is used for air infiltration.
The curtain wall mock up is subjected to alternating hot and cold cycles maintained for two hours per cycle.
Pull this flap at approximately 90oangle.
Premature failure is likely to dramatically reduce building life because replacement or repair is a massive undertaking requiring a vacant building extensive exterior access and replacement of all interior finishes in perimeter rooms.
Window washer anchorage load tests supplemental water resistance following sealant removal negative load sealant bonding tests are performed when specified.
Water penetration testing consists of utilizing a portable wind generator and installing a spray rack system at the exterior of the specimen.
The basic tests are.
Testing representative segments of curtain wall or windows for example comprises three basic tests plus three others.
The tab sample consists of a single 3 8 9 mm diameter bead of sealant that is tooled to a thickness of 1 4 6 mm.
