|
3
/
8
in. (10 mm) to
1
/
2
in. (13 mm). The width
of an expansion joint may be limited by the sealant capabilities. Extensibility of sealants in the 25 percent to 50
percent range is typical for brickwork. Compressibility of filler materials may be up to 75 percent.
Example. Consider a typical brick veneer with a desired expansion joint size of
1
/
2
in. (13 mm) and a sealant with
50 percent extensibility. Eq. 1 gives the following theoretical expansion joint spacing:
S
e
=
(0.5 in.)(50)
0.09
=
278 in. or 23 ft - 2 in. (7.06 m)
Therefore, the maximum theoretical spacing between vertical expansion joints in a straight wall would be 23 ft
- 2 in. (7.1 m). This spacing does not take into account window openings, corners or properties of other materials
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