Wood-Framed Walls

Refer to the Garage Floor Plan and East Elevation below for all questions. The garage will be stick-built using 2 x 4 lumber.

  1. A single pressure-treated bottom plate (sole) is used, and a double (untreated) top-plate is used. Determine the purchase quantity (total linear footage) and number of both pressure-treated and non-treated 2 x 4 for the top and bottom plates.
  2. Studs are 92-5/8” long and spaced 16” on center. Add two studs for each corner. Add the appropriate number of additional studs at each door opening based on the required bearing as listed in the header table. How many studs are needed? For this question, ignore any cripple studs needed for the gable ends and above the overhead door.
  3. Let us look at the gable-end walls. The 8-foot (nominal) walls will be built and stood first. Then, the roof structure will be framed using a ridgeboard-and-rafter system (to be covered in the next lab). For this question, estimate the 2 x 4 studs (at 16” o.c.) required to frame in one of the gable ends. Assuming 20% waste, how many 8-foot long 2 x 4s should you purchase for framing in this one gable end. Assume a single bottom plate, double top plate.
  4. Determine the number of 4’ x 8’ sheets of plywood needed to cover the exterior of the garage, including the two gable ends. (Neglect the 1” strip due to the exterior wall height being 8’-1” and the plywood measuring 4’-0” x 8’-0”.)

Sample Solution