Sample House

 

SECOND FLOOR LEVEL

 

Exterior End Wall  (not loaded by roof)

• dimensions
  • sqft
  • ceiling height: 8'
  • double top plate
• dead load
  • pressure
    • siding: vinyl = 0.5 psf
    • sheathing: 3/8" plywood = 3 x 3/8 = 1.125 psf
    • wall stud: 2x6 at 16" OC = 1.188 psf
    • insulation: 5.5" fiberglass = 0.5 x 5.5 = 2.75 psf
    • drywall: 1/2" gypsum board = 5 x 1/2 = 2.5 psf
    • D = 8.1 psf
  • load to stud in wall below
    • A_T = 16 in. (1 ft/12 in.) x 8 ft = 10.67 ft²
    • P_D = D A_T = 86.40 lb  (there would also be some dead load from the studs at the (triangular) end of the roof)
• live load
• snow load
• wind load
  • pressure
    • assume W = 30 psf
  • load to stud
    • A_T = 16 in. (1 ft/12 in.) x 8 ft = 10.67 ft²
    • w_W = 30 psf x 16 in. (1 ft/12 in.) = 40 lb/ft
• seismic load
• deflection limit  (IBC table 1604.3)
  • L/240 for S or W = 8 ft x 12in./ft / 240 = 0.4000 in.