1. Unit 6 Structural Members © 2006 ITT Educational Services Inc.
CD230 Architectural Design & Drafting: Unit 6 Slide 1

2. Structural Components
Floor joists range from 2” X 6” to 2” X 14” and spaced at 12”, 16”, or 24”
Mudsill rests on the masonry foundation
Provides a base for all framing
Attached to foundation with anchor bolts
Either 3/4” or 5/8” in diameter
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CD230 Architectural Design & Drafting II: Unit 6 Slide 2

3. Structural Components
Joists will tend to roll as loads are applied
Blocking is used at the center of the joist span to help transfer lateral loads
Sheathing is placed over the joists to form the subfloor
Face grain should be perpendicular to the floor joists
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CD230 Architectural Design & Drafting II: Unit 6 Slide 3

4. Structural Components
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CD230 Architectural Design & Drafting II: Unit 6 Slide 4

5. Beams Girder (beam) is used to support the floor
A flitch beam consists of steel plates bolted between wood members
Glu-lam beams are laminated with sawn lumber and more structurally stable
Engineered wood girders consists of laminated veneer strips glued together
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CD230 Architectural Design & Drafting II: Unit 6 Slide 5

6. Beams © 2006 ITT Educational Services Inc.
CD230 Architectural Design & Drafting II: Unit 6 Slide 6

7. Structural Components
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CD230 Architectural Design & Drafting II: Unit 6 Slide 7

8. Structural Components
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CD230 Architectural Design & Drafting II: Unit 6 Slide 8

9. Structural Components
© 2006 ITT Educational Services Inc.
CD230 Architectural Design & Drafting II: Unit 6 Slide 9

10. Structural Components
© 2006 ITT Educational Services Inc.
CD230 Architectural Design & Drafting II: Unit 6 Slide 10