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Materials used in frame construction:
A. 3 x 3 x 1/4" continuous steel angle at top. This was a truss part in the initial design.
B. Bridging partially shown.
C. OT 125 roof joists 7' 4" oc (RJ-1).
D. 4 x 4" x 10 lb. column partially embedded in concrete wall.
E. OT 141 floor joists 1' 10" oc (FJ-1).
F. Concrete retaining wall.
G. Studio framing similar to that of the house.
H. Nonstructural 4 x 4" columns at ends. These do not support beams or joists, only windows.
I. Two-story 4 x 4" x 10 lb. column.
J. 12 C 10.2 channel at second floor to support floor joists. Similar members were used in the first design but were of different lengths and connections.
From The Details of Modern Architecture vol. 2
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