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LF I-Joist Hanger

LF

This product is only available in Canada

The LF series is ideal for applications not requiring web stiffeners. The economical LF series comes with a height designed to support the top flange of the I-joist. This feature reduces installation time as well as material costs.

Material

  • 18 gauge

Finish

  • Galvanized

Installation

  • Use all specified fasteners. Verify that the header can take the required fasteners specified in the table.
  • See General Instructions for the Installer for additional information.
  • Web stiffeners are not required with I-joists when the joist top flange is laterally supported by the sides of the hanger. I-joist manufacturers may require web stiffeners.

Options

  • These hangers cannot be modified. However, these models will normally accommodate a skew of up to 5°. For a sloping joist to 1/2:12, tests show a 10% reduction in ultimate hanger strength. Local crushing of the bottom flange or excessive deflection may be limiting; check with joist manufacturer for specific limitations on bearing of this type.

Uplift Resistances

  • Models have optional triangle joist nail holes for additional uplift. Properly attached web stiffeners are required.
  • LF — Add two additional 10d x 1 1/2" joist nails for a total factored uplift resistance of 415 lb. D.Fir-L and 375 lb. S-P-F (KD=1.15).

Related Links

Catalogue Pages

Related Literature

Load Tables

Joist Size (in.) Model No. Web Stiff Reqd. Ga. Dimensions (in.) Fasteners Factored Resistance
D.Fir-L S-P-F
W H B Min./Max. Header Joist Uplift Normal Uplift Normal
(KD = 1.15) (KD = 1.00) (KD = 1.15) (KD = 1.00)
lb. lb. lb. lb.
kN kN kN kN
1 1/2 x 9 1/4 – 9 1/2 LF159 18 1 9/16 9 1/4 2 (10) 10d (1) #8 x 1 1/4" WS 105 2435 105 1845
0.47 10.83 0.47 8.21
1 1/2 x 11 1/4 – 11 7/8 LF1511 18 1 9/16 11 1/4 2 (12) 10d (1) #8 x 1 1/4" WS 105 2435 105 1845
0.47 10.83 0.47 8.21
1 3/4 x 9 1/4 – 9 1/2 LF179 18 1 13/16 9 1/4 2 (10) 10d (1) #8 x 1 1/4" WS 105 2525 105 2155
0.47 11.23 0.47 9.60
1 3/4 x 11 7/8 LF1711 18 1 13/16 11 1/4 2 (12) 10d (1) #8 x 1 1/4" WS 105 2845 105 2155
0.47 12.66 0.47 9.60
1 3/4 x 14 LF1714 18 1 13/16 13 1/2 2 (14) 10d (1) #8 x 1 1/4" WS 105 2845 105 2155
0.47 12.66 0.47 9.59
2 1/16 x 9 1/2 LF219 18 2 1/8 8 15/16 2 (10) 10d (1) #8 x 1 1/4" WS 105 2525 105 2155
0.47 11.23 0.47 9.60
2 1/16 x 11 7/8 LF2111 18 2 1/8 11 1/4 2 (12) 10d (1) #8 x 1 1/4" WS 105 2880 105 2270
0.47 12.81 0.47 10.11
2 1/16 x 14 LF2114 18 2 1/8 13 9/16 2 (14) 10d (1) #8 x 1 1/4" WS 105 3235 105 2385
0.47 14.39 0.47 10.61
2 5/16 x 9 1/2 LF239 18 2 3/8 9 1/4 2 (10) 10d (1) #8 x 1 1/4" WS 105 2525 105 2155
0.47 11.23 0.47 9.60
2 5/16 x 11 7/8 LF2311 18 2 3/8 11 1/4 2 (12) 10d (1) #8 x 1 1/4" WS 105 2880 105 2270
0.47 12.81 0.47 10.11
2 5/16 x 14 LF2314 18 2 3/8 13 1/2 2 (14) 10d (1) #8 x 1 1/4" WS 105 3235 105 2385
0.47 14.39 0.47 10.61
2 1/2 x 9 1/4 – 9 1/2 LF259 18 2 9/16 9 1/4 2 (10) 10d (1) #8 x 1 1/4" WS 105 2525 105 2155
0.47 11.23 0.47 9.60
2 1/2 x 11 1/4 – 11 7/8 LF2511 18 2 9/16 11 1/4 2 (12) 10d (1) #8 x 1 1/4" WS 105 2880 105 2270
0.47 12.81 0.47 10.11
2 1/2 x 14 LF2514 18 2 9/16 13 1/2 2 (14) 10d (1) #8 x 1 1/4" WS 105 3235 105 2385
0.47 14.39 0.47 10.61
3 x 9 1/4 – 9 1/2 LF2-159 18 3 1/8 9 1/4 2 (10) 10d (2) #8 x 1 1/4" WS 105 2525 105 2150
0.47 11.23 0.47 9.60
3 x 11 1/4 – 11 7/8 LF2-1511 18 3 1/8 11 1/4 2 (12) 10d (2) #8 x 1 1/4" WS 105 2880 105 2270
0.47 12.81 0.47 10.11
3 1/2 x 9 1/4 – 9 1/2 LF359 YES7 18 3 9/16 9 1/4 2 (10) 10d (2) #8 x 1 1/4" WS 105 2525 105 2155
0.47 11.23 0.47 9.60
3 1/2 x 11 1/4 – 11 7/8 LF3511 YES7 18 3 9/16 11 1/4 2 (12) 10d (2) #8 x 1 1/4" WS 105 2880 105 2270
0.47 12.81 0.47 10.11
3 1/2 x 14 LF3514 YES7 18 3 9/16 13 1/2 2 (14) 10d (2) #8 x 1 1/4" WS 105 3235 105 2385
0.47 14.39 0.47 10.61
  1. 10d common nails may be used instead of the specified 16d nails at 0.83 of the tabulated value.
  2. Uplift loads have been increased 15% for earthquake or wind loading with no further increase allowed. Reduce by 15% for standard term loading (KD=1.00) such as in cantilever construction.
  3. MIN nailing quantity and load values — fill all round holes; MAX nailing quantity and load values — fill all round and triangle holes.
  4. D-Fir.L factored resistances can be used for most LVL. Verify with manufacturer prior to selecting hanger.
  5. Web stiffeners are required when top flange isn’t supported laterally by the hanger.
  6. Web stiffeners are required when supporting double I-joists with flanges less than 1 5/16" thick.
  7. For 16- and 18-gauge, 3 1/2" wide I-joist hangers, web stiffeners are required when the factored reaction is greater than 2330 lb. (10.36 kN).
  8. NAILS: 16d = 0.162" dia. x 3 1/2" long, 10d = 0.148" dia. x 3" long, 10d x 1 1/2 = 0.148" dia. x 1 1/2" long. See other nail sizes and information.