The Width of an Expansion Joint in the Rails of a Typical

Multiple Choice

The width of an expansion joint in the rails of a typical stick- built glass curtain wall

A) is 1 in. standard.
B) is 1/4 in. standard.
C) is 1/32 in. standard.
D) is 1/2 in. standard.
E) must be determined on project- by- project basis.