Diaphragm Chords

 

Convert Moment into Couple

couple = magnitude of forces x distance between forces

T = C = M/b

T and C can switch sides

 

 

Tension Usually Controls

1. Fc > Ft

2. buckling is rarely a problem due to lateral support

3. spliced members  (tension vs compression splices)

 

 

Top Plates as Chords

sample house

 

plate splices

Larry Haun - Framing Walls

  • part 5, 8:30
  • part 6, 0:00

 

section 10.8 and chapter 15 focus on anchorage of diaphragm to chords and shearwalls

Collective Chord Forces