Built-Up Columns

 

spaced column

• not covered in textbook
• NDS section 15.2
• harder to fabricate
• connectors transfer shear

 

 

built-up column

• parallel members nailed or bolted together to function as a composite column
• NDS section 15.3
• easy to fabricate
• nails do not fully transfer shear between lams  →  not as strong as solid-sawn lumber

 K_f reduction for shear transfer (only for one axis)