Lesson 5: Load Path

Concrete Slabs on Beams One-Way SlabTwo-Way Slab

Concrete Slabs on Beams One-Way SlabTwo-Way Slab

Simple-Braced Building

All Connections Simple (pins)

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 Girder Exterior Fill Beam Interior Girder

1 Story Building Brace (truss)

Slab = “Diaphragm” Brace prevents X-direction Movement of this point

Slab = “Diaphragm” Brace prevents X-direction Movement of this point Brace prevents Y-direction Movement of this point

Slab = “Diaphragm” Brace prevents X-direction Movement of this point Brace prevents Y-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. 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. Braced

1 Story Building Beam-Column Connections: Pins Foundations: Pins

1 Story Building mmmmm… Strangely familiar…..

1 Story Building

Homework Lesson 4

Beam FBD’s

6k6k 6k6k 6k6k

Gravity, only Beam FBD’s 60 k

Gravity, only Column FBD’s 60 k 120 k

Now, Adding Lateral Force Column FBD’s 60 k 120 k 0k0k 0k0k 0k0k

Now, Adding Lateral Force Column FBD’s 60 k 120 k 0k0k 0k0k 0k0k 6k6k