www.strongtie.com


>>Home   > All Products - Alphabetical List

LTT/MTT/HTT Tension Ties

  Print this page
Link to email this page to a friend  Email this page to a friend

Tension ties offer a solution for resisting tension loads that is fastened with nails. The entire line of tension ties has been tested and evaluated to the requirements of AC155.

NEW! 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 the HTT16 and HTT22. For an added benefit, the HTT5 installs with 6 fewer nails than the HTT22.

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)
U.S. Patent
5,467,570
HTT22
(HTT16 similar)
U.S. Patent 5,467,570
Horizontal LTTI31 Installation Horizontal LTT19 Installation
(LTT20B similar)

Vertcal HTT22 Installation


For tension ties, per ASTM test standards, anchor bolt nut should be finger-tight plus 1/3 to 1/2 turn with a hand wrench, with consideration given to possible future wood shrinkage. Care should be taken to not over-torque the nut. Impact wrenches should not be used.

top Load Table:See code report listings below

Table
  1. The Designer must specify anchor bolt type, length and embedment.
    See SB Anchor Bolts. Refer to Anchor Designer Software™ for ACI 318 for anchoring solutions.
  2. Allowable loads have been increased for wind or earthquake load durations with no further increase allowed; reduce where other load durations govern.
  3. Allowable loads are based on a minimum lumber thickness of 3".
  4. If a 1/2" or 5/8" anchor bolt is used for the LTT19 or LTT20B, add a standard cut washer to the seat. No additional washer is required for a 3/4" anchor bolt. See table for appropriate anchor bolt sizes.
  5. If the base of the LTTI31 is installed flush with a concrete or masonry wall, then the allowable load is 2285 lbs.
  6. Tension values are valid for holdowns flush or raised off of sill plate.
  7. Allowable tension load with a bearing plate washer BP5/8-2 (sold separately) is 5395 lbs. for HTT5 and 4265 lbs. for HTT22.
  8. Deflection at Highest Allowable Tension Load includes fastener slip, holdown elongation, and anchor bolt elongation (L = 6"). Additional elongation of anchor bolts shall be accounted for by the Designer when holdowns are raised higher than 6".
  9. Structural composite lumber columns have sides that show either the wide face or the edges of the lumber strands/veneers. Values in the tables reflect installation into the wide face. See technical bulletin T-SCLCOLUMN for values on the narrow face (edge).
  10. NAILS: 16dx2 1/2= 0.162" dia. x 2 1/2" long, 10d = 0.148" dia. x 3" long, 10dx1 1/2= 0.148" dia. x 1 1/2" long. See other nail sizes and information.

next  top Code Reports (PDFs):
Legacy Reports
  IAPMO ES 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.
HTT16 ER-130   RR25818 FL11496      
HTT22 ER-130   RR25818 FL11496      
HTT4 ER-130   RR25818 FL11496      
HTT5 ER-130   RR25818 FL11496      
LTTSee specific model numbers for code listings.
LTT19 ER-130   RR25818 FL11496      
LTT20B ER-130   RR25818 FL11496      
LTTI31 ER-130   RR25818 FL11496      
MTTSee specific model numbers for code listings.

top
Revit Drawings (2D & 3D Families):


next  topDrawings: To download drawings, right-click or Ctrl-click on the link, then choose "Save Target As..."
Download the Simpson AutoCad Menu, which allows you to insert Ortho views directly into your AutoCAD drawing.

 ORTHOGRAPHIC
PERSPECTIVE
HTTNone for this model HGT with HTT: DWG | DXF
HTT16 HTT16: DWG | DXF
HTT16 front view: DWG | DXF
HTT16 left view: DWG | DXF
HTT16 right view: DWG | DXF
HTT16 top view: DWG | DXF
High Wind-Resistant Construction D57: Pile/Girder to Wall: DWG | DXF
HTT22 HTT22: DWG | DXF
HTT22 front view: DWG | DXF
HTT22 left view: DWG | DXF
HTT22 right view: DWG | DXF
HTT22 top view: DWG | DXF
High Wind-Resistant Construction D52: Header to Wall Framing: DWG | DXF
High Wind-Resistant Construction D90: Holdowns: DWG | DXF
High Wind-Resistant Construction D4: Girder/Truss to Wall Framing: DWG | DXF
High Wind-Resistant Construction D7: Girder/Truss to Wall Framing: DWG | DXF
High Wind-Resistant Construction D19: Girder/Truss To Masonry/Concrete: DWG | DXF
Girder/Truss to Concrete Connections: DWG | DXF
HTT22 Horizontal: DWG | DXF
HTT22: DWG | DXF
HTT4None for this model None for this model
HTT5 HTT5: DWG | DXF
HTT5 front view: DWG | DXF
HTT5 left view: DWG | DXF
HTT5 right view: DWG | DXF
HTT5 top view: 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 D6: 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
MTTNone for this model None for this model

   
top
Order free catalogs by mail
top top top top
Fliers (PDFs):
top

Home | About Simpson | Contact Simpson | Browse Products | Product Use Information
Privacy Policy | User Agreement | Limited Warranty | Parent Company

Stay informed! Sign up for Simpson's newsletters

Copyright © 2009, Simpson Strong-Tie Company Inc. All Rights Reserved
Contact Webmaster with questions or comments.

Printed from
© 2009 Simpson Strong-Tie®