1. Bolting

2. Shop-Fabricated Pieces
Steel is prefabricated

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

4. Steel Erection
Steel is prefabricated

5. Steel Erection
Steel is prefabricated

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

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

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

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

10. Tension Members in Truss (but BOLTS IN SHEAR)

11. Tension Members in Truss (but BOLTS IN SHEAR)

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

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

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

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

17. 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

18. 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

19. 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

20. 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

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

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

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