LTT/HTT Tension Ties
Tension ties offer a solution for resisting tension loads that are fastened with nails. The HTT4 and HTT5 are the latest generation of tension ties. They feature an optimized nailing pattern which results in better performance with less deflection. Designed to meet rigorous code standards, the HTT4 and HTT5 offer higher loads than their predecessors.
HTT5KT is sold as a kit with the holdown, bearing plate washer and Strong-Drive® SD Connector screws. The HTT5-3/4 is designed to use a 3/4"-diameter anchor bolt. 3/4" post-installed anchor bolts are commonly used when retrofitting tension ties to horizontal wood members.
The LTT19 light tension tie is designed for 2x joists or purlins and the LTT20B is for nail- or bolt-on applications. The 3" nail spacing makes the LTT20B suitable for wood I-joists with 10d x 1 1/2". The LTTI31 is designed for wood chord open-web truss attachments to concrete or masonry walls and may also be installed vertically on a minimum 2x6 stud.
- See table
- Galvanized. May be ordered HDG; contact Simpson Strong-Tie.
- Use all specified fasteners; see Holdown and Tension Tie General Notes.
- A standard-cut washer is required for LTT19 and LTT20B when using 1/2" or 5/8" anchor bolts. No additional washer is required when using a 3/4" anchor bolt.
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S/LTT, S/DTT and HTT Tension TiesT-CF-LTT1SB16Submittal/substitution request for S/LTT, S/DTT and HTT tension ties for cold-formed steel construction.Submittal
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Connectors Installed on SCL ColumnsT-C-SCLCLMCAN17A one-page Canadian Limit States version of the technical bulletin discussing the structural properties of two different surface sides of columns made from structural composite lumber (SCL).Technical Bulletin
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These models are approved for installation with the Strong-Drive® SD Connector screw. See the load values below.
- LTTI31 installed flush with concrete or masonry has an allowable load of 2285 lbs.
- Allowable load for HTT5 with a BP5/8-2 bearing plate washer installed in the seat of the holdown is 5,295 lb. for DF/SP and 4,555 lb. for SPF/HF.
- Fasteners: 10dx1 1/2= 0.148" dia. x 1 1/2" long,
10d = 0.148" dia. x 3" long,
16d x 2 1/2= 0.162" dia. x 2 1/2" long,
SD #10 x 2 1/2 = 0.161" dia. x 2 1/2",
SD #10 x 1 1/2 = 0.161" dia. x 1 1/2".
|Part||IAPMO UES ER||ICC-ES ESR||City of Los Angeles||State of Florida|
|HTT||See specific model numbers for code listings.|
|HTT4||ER-102 ER-130 ER-124||RR25818 RR25489||FL11496 FL13872|
|HTT5||ER-102 ER-130 ER-124||RR25818 RR25489||FL11496 FL13872|
|LTT||See specific model numbers for code listings.|