48215_Materials&Assembly

Wood Framing Homework (10 pts)

Assigned Date: Due Date: 2008.02.21

Assignment

Each of you has obtained 18 sheets of APA rated floor sheathing and as much APA rated roof sheathing as you need. Design a rectangular wood framed structure with a floor supported on 2 x 4 load bearing walls and/ or beams and a sloping roof that utilizes all of the sheathing with no waste. The structure must have at least one open and one closed side. Use the framing system of your choice - sawn lumber or engineered wood - striving to use the components at their optimum span capability.

Using the analog drawing conventions introduced in class, compose a set of drawings on ANSI "B" (11" x 17") sheets containing the following drawings with all framing members, room labels, section marks, notes, dimensions and grid lines.

  1. A first floor plan showing the floor structure above and a second floor plan showing roof framing above at 1/4"=1'-0".
  2. Building section cut through the secondary structure at 1/4"=1'-0".
  3. Corner details - plan and 2 sections at 1 1/2"=1'-0".

Please submit your drawings to the designated flat file in the entrance of the Robert L. Preger Intelligent Workplace™.

Span Table

Joists (min width 1 1/2") Depth to Span Ratio
Sawn Lumber 1:16
Engineered Wood 1:24
Beams/ Headers (min width 3 1/2")  
Sawn Lumber 1:12
Engineered Wood 1:16
Girders (min width 5 1/2")  
Sawn Lumber 1:12
Engineered Wood 1:16

Configuration Table

Last Digit SS # Aspect Ratio
0,1 1:1
2,3 5:7 (16 sf waste)
4,5 4:9
6,7 1:4
8,9 1:9

Grading Criteria:

Grids/ Dimensions/ Notes
2 pts
Primary/ Secondary Span
2 pts
Configuration
4 pts
Details
2 pts