Bolting

Shop-Fabricated Pieces Steel is prefabricated

Shop-Fabricated Pieces Steel is prefabricated Welded plates, connection angles, and holes are done in a shop.

Steel Erection Steel is prefabricated

Steel Erection Steel is prefabricated

Steel Erection Steel is prefabricated The steel erector’s job is simple: lift and bolt

Steel Erection Steel is prefabricated The steel erector’s job is simple: lift and bolt

Steel Erection Steel is prefabricated The steel erector’s job is simple: lift and bolt

Steel Erection Steel is prefabricated The steel erector’s job is simple: lift and bolt Simple

Tension Members in Truss (but BOLTS IN SHEAR)

Tension Members in Truss (but BOLTS IN SHEAR)

Tension Member: Bolts in Both Tension and Shear (beyond CE311)

Tension Member: Bolts in Both Tension and Shear (beyond CE311)

Tension Member: Bolts in Both Tension and Shear (beyond CE311)

Bolted Moment Connections (we DO NOT WANT BOLTS TO EVEN SLIP!!)

ASTM Bolt Types A307 – Low carbon steel – “Home Depot Bolt” (AISC & NISD 2000) A307 – Low carbon steel – “Home Depot Bolt” Silver color Not commonly used

ASTM Bolt Types A307 – Low carbon steel – “Home Depot Bolt” (AISC & NISD 2000) A307 – Low carbon steel – “Home Depot Bolt” Silver color Not commonly used Group A (incl. A325) – High-strength medium carbon steel (above left) Black color Most common bolts used in building construction Group B (incl. A490) – High-strength heat treated steel (above right) Cost more than A325’s, but are stronger so fewer bolts may be necessary

ASTM Bolt Types A307 – Low carbon steel – “Home Depot Bolt” (AISC & NISD 2000) A307 – Low carbon steel – “Home Depot Bolt” Silver color Not commonly used Group A (incl. A325) – High-strength medium carbon steel (above left) Black color Most common bolts used in building construction Group B (incl. A490) – High-strength heat treated steel (above right) Cost more than A325’s, but are stronger so fewer bolts may be necessary

ASTM Bolt Types A307 – Low carbon steel – “Home Depot Bolt” (AISC & NISD 2000) A307 – Low carbon steel – “Home Depot Bolt” Fnt = 45 ksi Group A (incl. A325) – High-strength medium carbon steel (above left) Fnt = 90 ksi Group B (incl. A490) – High-strength heat treated steel (above right) Fnt = 113 ksi

Common Bolt Sizes A325 and A490 bolts: ½”, 5/8”, ¾”, 7/8”, 1”, 1-1/8”

Common Bolt Sizes A325 and A490 bolts: ½”, 5/8”, ¾”, 7/8”, 1”, 1-1/8” Most Common

Hole Types Std = 1/16” big O’size = 3/16” big Short Slot Long Slot