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LTT/HTT Tension Ties


Installation

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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 new 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 ¾" diameter anchor bolt. 3/4" epoxied 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 10dx1 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.

Material: See table.

Finish: Galvanized. May be ordered HDG; contact Simpson Strong-Tie.

Installation:



top Gallery:
  roll over images below to see larger image
 
LTTI31 LTT20B
(LTT19 similar)
HTT5
(HTT4 similar)
Verticlal HTT Installation
Horizontal HTT4 Installation Horizontal LTTI31 Installation

Vertcal LTT19 Installation
(LTT20B similar)


top Load Table:See code report listings below

Additional Corrosion Protection

These products are available with additional corrosion protection. Additional products on this page may also be available with this option, check with Simpson Strong-Tie for details.

These models are approved for installation with the Strong-Drive® SD Connector screw.
Table
  1. LTT holdowns may not be installed more than 4½" above the top of concrete.
  2. LTTI31 installed flush with concrete or masonry has an allowable load of 2285 lbs.
  3. Allowable load for HTT5 with a BP5/8-2 bearing plate washer installed in the seat of the holdown is 5295 lbs. for DF/SP and 4555 lbs. for SPF/HF.
  4. FASTENERS: 10dx1 1/2= 0.148" dia. x 1 1/2" long,
    10d = 0.148" dia. x 3" long,
    16dx2 1/2= 0.162" dia. x 2 1/2" long,
    SD #10x2 1/2 = 0.161" dia. x 2 1/2",
    SD #10x1 1/2 = 0.161" dia. x 1 1/2".
    See other fastener sizes and information.

next  top Code Reports (PDFs):
Legacy Reports
  IAPMO UES ER ICC-ES ESR CITY OF LOS ANGELES STATE OF FLORIDA ICC-ES NER ICC-ES ER ICC-ES ES
HTTSee specific model numbers for code listings.
HTT4 ER-130 / ER-124   RR25818 / RR25489 FL10456 / FL11496      
HTT5 ER-130 / ER-124   RR25818 / RR25489 FL10456 / FL11496      
LTTSee specific model numbers for code listings.
LTT19 ER-130   RR25818 FL11496      
LTT20B ER-130   RR25818 FL11496      
LTTI31 ER-130   RR25818 FL11496      

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 ORTHOGRAPHIC
PERSPECTIVE
HTTNone for this model HGT with HTT: DWG | DXF
HTT4 HTT4: DWG | DXF
HTT4 front view: DWG | DXF
HTT4 left view: DWG | DXF
HTT4 right view: DWG | DXF
HTT4 top view: DWG | DXF
High Wind-Resistant Construction D70: Wall to Pile/Girder: DWG | DXF
HTT5 HTT5: DWG | DXF
HTT5 front view: DWG | DXF
HTT5 left view: DWG | DXF
HTT5 right view: DWG | DXF
HTT5 top view: DWG | DXF
High Wind-Resistant Construction D103: Holdowns: DWG | DXF
High Wind-Resistant Construction D21: Girder/Truss To Masonry/Concrete: DWG | DXF
High Wind-Resistant Construction D58: Header to Wall Framing: DWG | DXF
High Wind-Resistant Construction D9: Girder/Truss to Wall Framing: DWG | DXF
HTT5: DWG | DXF
LTTNone for this model None for this model
LTT19 LTT19: DWG | DXF
LTT19 front view: DWG | DXF
LTT19 left view: DWG | DXF
LTT19 right view: DWG | DXF
LTT19 top view: DWG | DXF
LTT19 & W: DWG | DXF
LTT20B LTT20B: DWG | DXF
LTT20B front view: DWG | DXF
LTT20B left view: DWG | DXF
LTT20B right view: DWG | DXF
LTT20B top view: DWG | DXF
High Wind-Resistant Construction D8: Girder/Truss to Wall Framing: DWG | DXF
LTTI31 LTTI31: DWG | DXF
LTTI31 front view: DWG | DXF
LTTI31 left view: DWG | DXF
LTTI31 right view: DWG | DXF
LTTI31 top view: DWG | DXF
LTTI31: DWG | DXF

   
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