On one sheet of 8-1/2" x 11" paper, draw the following:

• An elevation of a 2-story building with brick veneer. The overall dimensions are 120' long and 30' high. Scale: 1/16" = 1'-0". On the elevation, show the following:
  • vertical and horizontal sealant joint lines
  • glazing (12.5% or 1/8 of total surface area)
  • location of column lines (evenly-spaced at 20', 30', or 40')

• A sealant joint detail section (drawn to scale: full size) showing brick, sealant, and backup rod; and indicating the dimension of the sealant joint. See text, especially details on page 686.

• sealant joint width calculations:
  • air temperature range is from -8 to +100 degrees F.
  • movement capability of 12.5% or 25% (your choice)
  • brick expands over time by 2/100 of 1% (i.e., 0.0002 x original length) due to moisture absorption
  • anticipated structural movement is negligible
  • expect deviations in the brick alignment (construction tolerance) of 1/4"
  • For preliminary sizing, use: W = (100/X)[eL(DT) + M] + t; where:
    • W = required width of sealant joint;
    • X = % movement capability of sealant, e.g., 12.5 or 25;
    • e = coefficient of expansion of building "skin" material to be sealed (see below);
    • DT = annual range between extreme temperatures (assume 130 degrees F if not known);
    • L = length of "skin" material between joints (i.e., joint spacing)
    • M = anticipated nonthermal movement due to deflection, creep, moisture movement;
    • t = construction tolerance.

    Note: it is important that units are consistent. Convert all dimensions to inch units.

• Normal weight concrete 0.0000055

• Gypsum board 0.000009
• Gypsum plaster, sand 0.000007
• Glass 0.000005
• Acrylic glazing 0.000041
• Polycarbonate glazing 0.000044
• Polyethylene 0.000085
• PVC (vinyl) 0.000040