Platform Construction

1
Platform Construction

• Construction
• Mr. O

2
Platform Construction

• For use in construction jobs where a house is
  built over a basement or crawl space.

3
Floor Sills

• Sills lie on top of foundation
• Bolted in place
• Insulation between sill and foundation

4
Floor Joists

• 2x10 or 12s set on edges (vertical)
• Rest on floor sills
• Outside joists called stringers
• Perpendicular joists
• called Headers
• Nailed in place
• MFGd called I-Joists

5
Floor Joists (Contd)

• Long lengths require doubling up
• Support at meeting points and stress points from
  girders
• Girders held by
• columns/posts

6
Joist Spacing

• 12 or 16 O.C.
• Why not 24?
• Compensate
• for staircases

7
Platform Construction

• Provides nailing base for subfloor and walls
• Repeat for each story built
• Walls become load bearing rather than foundation