Lesson 5: Load Path
Concrete Slabs on Beams
One-Way Slab Two-Way Slab
Concrete Slabs on Beams
One-Way Slab Two-Way Slab
Simple-Braced Building
All Connections Simple (pins)
Building System Parts/Terms
Building System Parts/Terms
Building System Parts/Terms
Column
Building System Parts/Terms
Column
Fill Beam
Building System Parts/Terms
Column
Fill Beam
Girder
Building System Parts/Terms
Column
Interior Fill Beam
Exterior GirderExterior Fill Beam
Interior Girder
1 Story Building
Brace (truss)
Slab = “Diaphragm”
Brace preventsX-directionMovement of this point
Slab = “Diaphragm”
Brace preventsX-directionMovement of this point
Brace preventsY-direction
Movement of this point
Slab = “Diaphragm”
Brace preventsX-directionMovement of this point
Brace preventsY-direction
Movement of this point
Slab is rigid in X-Y Plane.
Slab is connected to every other point
Slab = “Diaphragm”
Braced
Slab is rigid in X-Y Plane.
Slab is connected to every other point.Therefore: Slab +
braced points = Every column is braced.
BracedBraced
Braced
Braced
BracedBraced
Braced
Braced
Braced
Braced
Braced
Braced
Braced
Braced
Braced
Slab = Diaphragm: a body that with planar rigidity. With several braces and a floor diaphragm, all columns
are braced
Braced
Slab is rigid in X-Y Plane.
Slab is connected to every other point.Therefore: Slab +
braced points = Every column is braced.
BracedBraced
Braced
Braced
BracedBraced
Braced
Braced
Braced
Braced
Braced
Braced
Braced
Braced
Braced
1 Story BuildingBeam-Column Connections: PinsFoundations: Pins
1 Story Buildingmmmmm… Strangely familiar…..
1 Story Building
1 Story Building
1 Story Building
1 Story Building
Homework Lesson 4
Beam FBD’s
Beam FBD’s
6k 6k6k
Gravity, only
Beam FBD’s
60k 60k 60k 60k 60k 60k
Gravity, only
Column FBD’s
60k 60k 60k 60k 60k 60k
60k 60k120k 120k
Now, Adding Lateral Force
Column FBD’s
60k 60k 60k 60k 60k 60k
60k 60k120k 120k
0k 0k 0k
Now, Adding Lateral Force
Column FBD’s
60k 60k 60k 60k 60k 60k
60k 60k120k 120k
0k 0k 0k6k