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Simpson Strong-Tie LSSR1.81Z Slopeable / Skewable Rafter Hanger, 1-3/4 in. LVL or I-joist rafter
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LSSR1.81Z Slopeable / Skewable Rafter Hanger, 1-3/4 in. LVL or I-joist rafter
The LSSR1.81Z is a field-adjustable rafter hanger for a 1-3/4 in. LVL or I-joist rafter. The swivel seat slopes 0 to 45 degrees up or down and the flanges skew 0 to 45 degrees left or right, so one hanger covers most hip, valley and jack rafter connections.
ZMAX galvanized. Limit rafter spacing to 11 in. on centre minimum with this model.
Features and Common Uses
- 18-gauge steel, ZMAX (G185) galvanized finish
- Swivel seat adjusts 0 to 45 degrees up or down
- Flanges skew 0 to 45 degrees left or right
- Can be installed after the rafters are in place
- ZMAX coating for added corrosion protection
Commonly used for:
- Jack rafters into hips and valleys
- Sloped rafters to ridge beams
- Retrofit rafter connections
Specifications
| Brand | Simpson Strong-Tie |
|---|---|
| Model | LSSR1.81Z |
| Carried member | 1-3/4 in. LVL or I-joist rafter |
| Gauge | 18 ga. |
| Width (W) | 1-13/16 in. |
| Header fasteners | (14) 0.148 in. x 2-1/2 in. |
| Joist fasteners | (12) 0.148 in. x 1-1/2 in. |
| Finish | ZMAX (G185) galvanized |
Dimensions, fastener schedule and allowable loads are from Simpson's catalogue table for the LSSR1.81Z. Loads vary by lumber species, load duration and nailing option; confirm the value for your design before install. Source: Simpson Strong-Tie Wood Construction Connectors Catalog C-C-2026, pp. 176-179 (PDF).
How to Install
- Bend the flanges to the skew and swing the seat to the rafter slope.
- Fill the header holes with (14) 0.148 in. x 2-1/2 in. nails.
- Fill the rafter holes with (12) 0.148 in. x 1-1/2 in. nails.
Full installation notes, fastener substitutions and load tables: Source: Simpson Strong-Tie Wood Construction Connectors Catalog C-C-2026, pp. 176-179 (PDF).
Frequently Asked Questions
Which nails do I need?
Header: (14) 0.148 in. x 2-1/2 in. Joist: (12) 0.148 in. x 1-1/2 in. Use the exact sizes Simpson specifies; a shorter or thinner nail lowers the allowable load. Simpson's catalogue table lists the load for each nailing option.
How far can it slope and skew?
The seat swings 0 to 45 degrees up or down and the flanges skew 0 to 45 degrees left or right.
Minimum rafter spacing?
Simpson limits the LSSR1.81Z to rafters at 11 in. on centre minimum.