Catalog

INTERNATIONAL BEAMS

IB MAX-CORE I-Joist top and bottom flanges must never be cut, notched, or otherwise modified. Holes in web should be cut with a sharp saw. For rectangular holes, avoid over-cutting the corners, as this can cause unnecessary stress concentrations. Slightly rounding the corners is recommended. Starting the rectangular hole by drilling a 1” diameter hole in each of the four corners and then making the cuts between the holes is another good method to minimize damage to the I-joist. WEB HOLE GUIDELINES DIAGRAM IBUC-TH1 Typical Holes

* Refer to notes on this page.

Minimum distance from face of support to the center of hole.

3/4x Diameter

2x diameter of larger hole

Allowable Web Hole Sizes and Locations (Limit State De TABLE IBC-AW1

40 psf Unfactored Live Load 15 psf Unfactored Dead Load (1 3/4” end bearings, 3 1/2” interior without bearing stiffeners) Minimum Distance from inside face of any support to center of webhole (Simple or Multi-span)

ROUND HOLE DIAMETER (INCHES)

Joist Depth Series SAF 2 3 4 5 6 6 1/4 7 8 8 5/8 9 10 10 3/4 9 1/2” IB400 14’-1” 0’-7” 1’-9” 2’-11” 4’-3” 5’-7” 6’-0” IB600 15’-4” 1’-5” 2’-8” 3’-11” 5’-4” 7’-1” 7’-7” IB400 16’-1” 0’-7” 0’-8” 1’-4” 2’-6” 3’-9” 4’-1” 5’-1” 6’-6” 7’-9” IB600 18’-1” 0’-7” 1’-6” 2’-8” 3’-11” 5’-5”5’-10”7’-1”8’-10” IB600 19’-11” 1’-9” 2’-11” 4’-2” 5’-5” 7’-0” 7’-5” 8’-8” IB900 20’-5” 0’-7” 1’-4” 2’-10” 4’-4” 6’-0” 6’-5” 7’-8” 9’-6” IB400 17’-8”0’-7”0’-8” 1’-2” 2’-3” 3’-4”3’-7” 4’-5”5’-7” 6’-4” 6’-10”8’-6” IB600 18’-1” 0’-7” 0’-8” 1’-9” 3’-1” 4’-5” 4’-9” 5’- 10” 7’-7” 8’-8” IB600 21’-10” 1’-9” 3’-0” 4’-4” 5’-8” 7’-1” 7’-6” 8’-7” 10’-2” IB900 23’-2” 0’-8” 1’-11” 3’-2” 4’-6” 5’- 10” 6’-3” 7’-3” 8’-9” 9’-10” 10’-7” 14” 11 7/8”

RESIDENTIAL (40L + 15D)

Allowable Web Hole Sizes and Locations (Limit State De TABLE IBC-AW2

50 psf Unfactored Live Load 35 psf Unfactored Dead Load (1 3/4” end bearings, 3 1/2” bearings with bearing stiffeners) Minimum Distance, D, from inside face of any support to center of web hole (Simple or Multi-span)

ROUND HOLE DIAMETER (INCHES)

Joist Depth

Series SAF 2

4 6 8 10 12 14 14 3/4 16 16 3/4

IB80

19’-0” 0’-7” 1’-0” 2’-7” 4’-3” 6’-0” 8’-0” 21’-6” 0’-7” 1’-7” 3’-4” 5’-2” 7’-1” 9’-1” 21’-0” 0’-7” 1’-4” 2’-9” 4’-3” 5’-10” 7’-5” 9’-10”

18”

IB900 IB800 IB900 IB900

20”

22’-6” 0’-7”

1’-1” 2’-9” 4’-5” 6’-3” 8’-1” 10’-5”

24” COMMERCIAL (50L + 35D)

24’-6” 0’-7” 0’-8” 1’-6” 3’-1” 4’-8” 6’-5” 8’-2” 8’-10”10’-2” 11’-2”

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January 2025