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HRS/ST/PS/HST/LSTA/LSTI/MST/MSTA/MSTC/MSTI
Strap Ties

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Installation

View step-by-step installation instructions

Straps are designed to transfer tension loads in a wide variety of applications.

HRS - A 12 gauge strap with a nailing pattern designed for installation on the edge of 2x members. NEW! The HRS416Z installs with Simpson Strong-Tie® Strong Drive® screws (SDS).

LSTA and MSTA - Designed for use on the edge of 2x members, with a nailing pattern that reduces the potential for splitting.

LSTI - Light straps that are suitable where pneumatic-nailing is necessary through diaphragm decking and wood chord open web trusses.

MST - Splitting may be a problem with installations on lumber smaller than 3 1/2"; either fill every nail hole with 10dx1 1/2" nails or fill every-other hole with 16d common nails. Reduce the allowable load based upon the size and quantity of fasteners used.

MSTC - High Capacity strap which utilizes a staggered nail pattern to help minimize wood splitting. Nail slots have been countersunk to provide a lower nail head profile.

Finish: PS - HDG; HST3 and HST6 - Simpson Strong-Tie® gray paint; all others - galvanized. Some products are available in stainless steel or ZMAX® coating; see Corrosion Information.

Installation: Use all specified fasteners. See General Notes.

SD9 & SD10 Compatible
Some products may be installed with our new Strong-Drive® SD screw - click here for details

Options: Special sizes can be made to order. Contact Simpson Strong-Tie.

Codes: MSTC and RPS meet code requirements for reinforcing cut members (16 gauge) at top plate and RPS at sill plate.
International Residential Code®- 2000/2006 R602.6.1
International Building Code®- 2000/2006 2308.9.8

See RPS.


top Gallery:
MSTI        

   MST          

   LSTI        

   LSTA and MSTA       
(Pilot holes not shown)         

   ST        

   ST9, ST12, ST18, ST22        
         
 
  roll over images below to see larger image
 
MSTC28 ST2115 HTP37Z HST
 
HRS HRS416Z Typical MSTI Installation
(MIT hanger shown)
LSTI similar		  
   
Typical LSTI Installation Typical HRS Installation    
 
  roll over images below to see larger image
 
Typical LSTA Installation (hanger not shown)
Bend strap one time only

 
PS   Typical PS720 Installation
PS strap design loads must be determined by the Designer for each installation. Bolts are installed both perpendicular and parallel-to- grain. Hole diameter in the part may be oversized to accommodate the HDG. Designer must determine if the oversize creates an unacceptable installation.
 
  roll over images below to see larger image
 
Typical Detail with Strap Installed Over Sheathing
   Floor-to-Floor
Tie Installation showing a Clear Span

top Floor-to-Floor Clear Span Table:
Table
Some of these models are load-rated for use with Strong-Drive® SD Screws.
See the load values.
  1. Loads include a 60% load duration increase on the fasteners for wind or earthquake loading
  2. 10dx1 1/2" nails may be substituted where 16d sinkers or 10d are specified at 100% of the table loads except where straps are installed over sheathing.
  3. 10d commons may be substituted where 16d sinkers are specified at 100% of table loads.
  4. Allowable bolt loads are based on parallel-to-grain loading and these minimum member thicknesses: MST – 2 1/2"; HST2 and
    HST5 – 4"; HST3 and HST6 – 4 1/2".
  5. 16d sinkers (0.148" dia x 3 1/4" long ) or 10d commons may be substituted where 16d commons are specified at 0.84 of the table loads.
  6. Use half of the nails in each member being connected to achieve the listed loads.
  7. Tension loads apply for uplift when installed vertically.
  8. NAILS: 16d = 0.162" dia. x 3 1/2" long, 16d Sinker = 0.148" dia. x 3 1/4" 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.

top Load Tables: See code report listings below

Table
Some of these models are load-rated for use with Strong-Drive® SD Screws.
See the load values.
  1. Loads include a 60% load duration increase on the fasteners for wind or earthquake loading
  2. 10dx1 1/2" nails may be substituted where 16d sinkers or 10d are specified at 100% of the table loads except where straps are installed over sheathing.
  3. 10d commons may be substituted where 16d sinkers are specified at 100% of table loads.
  4. 16d sinkers (0.148" dia x 3 1/4" long ) or 10d commons may be substituted where 16d commons are specified at 0.84 of the table loads.
  5. Use half of the nails in each member being connected to achieve the listed loads.
  6. Tension loads apply for uplift when installed vertically.
  7. NAILS: 16d = 0.162" dia. x 3 1/2" long, 16d Sinker = 0.148" dia. x 3 1/4" 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.
Table
Some of these models are load-rated for use with Strong-Drive® SD Screws.
See the load values.
  1. Loads include a 60% load duration increase on the fasteners for wind or earthquake loading
  2. 10d commons may be substituted where 16d sinkers are specified at 100% of the table loads.
  3. 16d sinkers (0.148" dia. x 3 1/4" long) or 10d commons may be substituted where 16d commons are specified at 0.84 of the table loads. 
  4. Allowable bolt loads are based on parallel-to-grain loading and these minimum member thicknesses: MST – 2 1/2"; HST2 and
    HST5 – 4"; HST3 and HST6 – 4 1/2".
  5. Use half of the required nails in each member being connected to achieve the listed loads.
  6. Straps not installed over sheathing with 10d (0.148 dia. x 3) nails specified may be substituted with 10dx1 1/2 (0.148 dia. x 1 1/2) with no reduction in load.
  7. Tension loads apply for uplift as well when installed vertically.
  8. NAILS: 16d = 0.162" dia. x 3 1/2" long, 16d Sinker = 0.148" dia. x 3 1/4" 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
HRSSee specific model numbers for code listings.
HRS12      FL11470    
HRS416ZNo code listing: Please contact us for test data.
HRS6      FL11470    
HRS8      FL11470    
HSTSee specific model numbers for code listings.
HSTSee specific model numbers for code listings.
HST2  ESR-2105 / ESR-2523 * RR25713 FL10852    
HST3  ESR-2105 / ESR-2523 * RR25713 FL10852    
HST5  ESR-2105 / ESR-2523 * RR25713 FL10852    
HST5-4No code listing: Please contact us for test data.
HST6  ESR-2105 / ESR-2523 * RR25713 FL10852    
HST6-41/2No code listing: Please contact us for test data.
HTP37ZNo code listing: Please contact us for test data.
LSTASee specific model numbers for code listings.
LSTA12  ESR-2105 / ESR-2523 * RR25713 FL10852    
LSTA15  ESR-2105 / ESR-2523 * RR25713 FL10852    
LSTA18  ESR-2105 / ESR-2523 * RR25713 FL10852    
LSTA21  ESR-2105 / ESR-2523 * RR25713 FL10852    
LSTA24  ESR-2105 / ESR-2523 * RR25713 FL10852    
LSTA30  ESR-2105 / ESR-2523 * RR25713 FL10852    
LSTA36  ESR-2105 / ESR-2523 * RR25713 FL10852    
LSTA9  ESR-2105 / ESR-2523 * RR25713 FL10852    
LSTISee specific model numbers for code listings.
LSTI49  ESR-2105 / ESR-2523 * RR25713 FL10852    
LSTI73  ESR-2105 / ESR-2523 * RR25713 FL10852    
MSTSee specific model numbers for code listings.
MSTSee specific model numbers for code listings.
MST21/2No code listing: Please contact us for test data.
MST27  ESR-2105 / ESR-2523 * RR25713 FL10852    
MST37  ESR-2105 / ESR-2523 * RR25713 FL10852    
MST48  ESR-2105 / ESR-2523 * RR25713 FL10852    
MST60  ESR-2105 / ESR-2523 * RR25713 FL10852    
MST72  ESR-2105 / ESR-2523 * RR25713 FL10852    
MSTASee specific model numbers for code listings.
MSTA12  ESR-2105 / ESR-2523 * RR25713 FL10852    
MSTA12SSNo code listing: Please contact us for test data.
MSTA12Z  ESR-2105 / ESR-2523 * RR25713 FL10852    
MSTA15  ESR-2105 / ESR-2523 * RR25713 FL10852    
MSTA15Z  ESR-2105 / ESR-2523 * RR25713 FL10852    
MSTA18  ESR-2105 / ESR-2523 * RR25713 FL10852    
MSTA18SSNo code listing: Please contact us for test data.
MSTA18Z  ESR-2105 / ESR-2523 * RR25713 FL10852    
MSTA21  ESR-2105 / ESR-2523 * RR25713 FL10852    
MSTA21Z  ESR-2105 / ESR-2523 * RR25713 FL10852    
MSTA24  ESR-2105 / ESR-2523 * RR25713 FL10852    
MSTA24SSNo code listing: Please contact us for test data.
MSTA24Z  ESR-2105 / ESR-2523 * RR25713 FL10852    
MSTA30  ESR-2105 / ESR-2523 * RR25713 FL10852    
MSTA30Z  ESR-2105 / ESR-2523 * RR25713 FL10852    
MSTA36  ESR-2105 / ESR-2523 * RR25713 FL10852    
MSTA36SSNo code listing: Please contact us for test data.
MSTA36Z  ESR-2105 / ESR-2523 * RR25713 FL10852    
MSTA49  ESR-2105 / ESR-2523 *   FL11470    
MSTA9  ESR-2105 / ESR-2523 * RR25713 FL10852    
MSTAM24Z      FL11473    
MSTAM36Z      FL11473    
MSTCSee specific model numbers for code listings.
MSTCSee specific model numbers for code listings.
MSTC28  ESR-2105 / ESR-2523 * RR25713 FL10852    
MSTC28  ESR-2105 / ESR-2523 * RR25713 FL10852    
MSTC40  ESR-2105 / ESR-2523 * RR25713 FL10852 / FL11473    
MSTC40  ESR-2105 / ESR-2523 * RR25713 FL10852 / FL11473    
MSTC52  ESR-2105 / ESR-2523 * RR25713 FL10852    
MSTC52  ESR-2105 / ESR-2523 * RR25713 FL10852    
MSTC66  ESR-2105 / ESR-2523 * RR25713 FL10852    
MSTC66  ESR-2105 / ESR-2523 * RR25713 FL10852    
MSTC78  ESR-2105 / ESR-2523 * RR25713 FL10852    
MSTC78  ESR-2105 / ESR-2523 * RR25713 FL10852    
MSTISee specific model numbers for code listings.
MSTISee specific model numbers for code listings.
MSTI26  ESR-2105 / ESR-2523 * RR25713 FL10852    
MSTI36  ESR-2105 / ESR-2523 * RR25713 FL10852    
MSTI36  ESR-2105 / ESR-2523 * RR25713 FL10852    
MSTI48  ESR-2105 / ESR-2523 * RR25713 FL10852    
MSTI48  ESR-2105 / ESR-2523 * RR25713 FL10852    
MSTI60  ESR-2105 / ESR-2523 * RR25713 FL10852    
MSTI60  ESR-2105 / ESR-2523 * RR25713 FL10852    
MSTI72  ESR-2105 / ESR-2523 * RR25713 FL10852    
MSTI72  ESR-2105 / ESR-2523 * RR25713 FL10852    
PSSee specific model numbers for code listings.
PS218No load capacity: Products not tested or submitted because they’re not load rated and code approval not required.
PS418No load capacity: Products not tested or submitted because they’re not load rated and code approval not required.
PS720No load capacity: Products not tested or submitted because they’re not load rated and code approval not required.
STSee specific model numbers for code listings.
ST12  ESR-2105 / ESR-2523 * RR25713 FL10852    
ST18  ESR-2105 / ESR-2523 * RR25713 FL10852    
ST2115  ESR-2105 / ESR-2523 * RR25713 / RR25489 FL10852   ER-5275
ST2122  ESR-2105 / ESR-2523 * RR25713 / RR25489 FL10852   ER-5275
ST22  ESR-2105 / ESR-2523 * RR25713 FL10852    
ST2215  ESR-2105 / ESR-2523 * RR25713 / RR25489 FL10852   ER-5275
ST292  ESR-2105 / ESR-2523 * RR25713 / RR25489 FL10852   ER-5275
ST6215  ESR-2105 / ESR-2523 * RR25713 / RR25489 FL10852   ER-5275
ST6224  ESR-2105 / ESR-2523 * RR25713 / RR25489 FL10852   ER-5275
ST6236  ESR-2105 / ESR-2523 * RR25713 / RR25489 FL10852   ER-5275
ST9  ESR-2105 / ESR-2523 * RR25713 FL10852    

* ESR-2523 is an Index of many of Simpson Strong-Tie Stamped and Welded Cold-formed Steel Products for Wood or Cold-formed Steel Construction



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
HRSNone for this model None for this model
HRS12 HRS12: DWG | DXF
None for this model
HRS416ZNone for this model HRS416Z: DWG | DXF
HRS6 HRS6: DWG | DXF
None for this model
HRS8 HRS8: DWG | DXF
HRS8: DWG | DXF
HSTNone for this model None for this model
HST2 HST2: DWG | DXF
None for this model
HST3 HST3: DWG | DXF
None for this model
HST5None for this model None for this model
HST5-4None for this model None for this model
HST6None for this model None for this model
HST6-41/2None for this model None for this model
HTP37ZNone for this model HTP37Z: DWG | DXF
LSTANone for this model Floor to Floor Connections: DWG | DXF
LSTA Method 1: DWG | DXF
LSTA Method 2: DWG | DXF
LSTA12 LSTA12: DWG | DXF
None for this model
LSTA15 LSTA15: DWG | DXF
None for this model
LSTA18 LSTA18: DWG | DXF
High Wind-Resistant Construction D39: Stud to Band Joist: DWG | DXF
High Wind-Resistant Construction D43: Floor to Masonry/Concrete: DWG | DXF
High Wind-Resistant Construction D59: Pile/Girder to Wall: DWG | DXF
Floor to Floor Connections: DWG | DXF
Pile to Girder Connectors 2: DWG | DXF
Stud to Band Joist Connections Version 2: DWG | DXF
LSTA21 LSTA21: DWG | DXF
High Wind-Resistant Construction D52: Header to Wall Framing: DWG | DXF
High Wind-Resistant Construction D57: Pile/Girder to Wall: DWG | DXF
LSTA24 LSTA24: DWG | DXF
High Wind-Resistant Construction D102: Gable End to Wall Framing: DWG | DXF
LSTA30 LSTA30: DWG | DXF
None for this model
LSTA36 LSTA36: DWG | DXF
High Wind-Resistant Construction D45: Floor to Masonry/Concrete: DWG | DXF
LSTA9 LSTA9: DWG | DXF
None for this model
LSTINone for this model LSTI: DWG | DXF
LSTI49 LSTI49: DWG | DXF
None for this model
LSTI73None for this model None for this model
MSTNone for this model None for this model
MST21/2None for this model None for this model
MST27 MST27: DWG | DXF
None for this model
MST37 MST37: DWG | DXF
None for this model
MST48 MST48: DWG | DXF
None for this model
MST60 MST60: DWG | DXF
None for this model
MST72 MST72: DWG | DXF
None for this model
MSTANone for this model High Wind-Resistant Construction D64: Post/Column to Beam: DWG | DXF
MSTA12None for this model None for this model
MSTA15None for this model None for this model
MSTA18 MSTA18: DWG | DXF
None for this model
MSTA21None for this model None for this model
MSTA24 MSTA24: DWG | DXF
None for this model
MSTA30 MSTA30: DWG | DXF
High Wind-Resistant Construction D118: Load Path Installation Considerations: Bulging Floor-to-Floor Straps: DWG | DXF
MSTA36 MSTA36: DWG | DXF
High Wind-Resistant Construction D40: Stud to Band Joist: DWG | DXF
Floor to Floor Connections: DWG | DXF
MSTA49None for this model None for this model
MSTA9None for this model None for this model
MSTCNone for this model None for this model
MSTC28 MSTC28: DWG | DXF
None for this model
MSTC40 MSTC40: DWG | DXF
None for this model
MSTC52 MSTC52: DWG | DXF
None for this model
MSTC66 MSTC66: DWG | DXF
None for this model
MSTC78 MSTC78: DWG | DXF
None for this model
MSTINone for this model MSTI: DWG | DXF
MSTI26None for this model None for this model
MSTI36None for this model None for this model
MSTI48None for this model None for this model
MSTI60None for this model None for this model
MSTI72None for this model None for this model
PSNone for this model None for this model
PS218 PS218: DWG | DXF
None for this model
PS418 PS418: DWG | DXF
Pile to Girder Connectors 1: DWG | DXF
Pile to Girder Connectors 2: DWG | DXF
Stud to Band Joist Connections: DWG | DXF
PS720 PS720: DWG | DXF
High Wind-Resistant Construction D57: Pile/Girder to Wall: DWG | DXF
High Wind-Resistant Construction D58: Pile/Girder to Wall: DWG | DXF
High Wind-Resistant Construction D59: Pile/Girder to Wall: DWG | DXF
PS720: DWG | DXF
STNone for this model None for this model
ST12 ST12: DWG | DXF
ST12 front view: DWG | DXF
ST12 right view: DWG | DXF
None for this model
ST18 ST18: DWG | DXF
ST18 front view: DWG | DXF
ST18 right view: DWG | DXF
None for this model
ST2115 ST2115: DWG | DXF
None for this model
ST2122 ST2122: DWG | DXF
None for this model
ST22 ST22: DWG | DXF
ST22 front view: DWG | DXF
ST22 right view: DWG | DXF
None for this model
ST2215 ST2215: DWG | DXF
None for this model
ST292 ST292: DWG | DXF
None for this model
ST6215 ST6215: DWG | DXF
None for this model
ST6224 ST6224: DWG | DXF
None for this model
ST6236 ST6236: DWG | DXF
None for this model
ST9 ST9: DWG | DXF
ST9 front view: DWG | DXF
ST9 right view: DWG | DXF
None for this model

   
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Catalog Pages (PDFs):
Order free catalogs by mail
C-2009 (Wood Construction Connectors), page 148-page 150
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Related Categories:
High Wind Resistance (Wood Construction)
Strap Ties (Wood Construction)
Angles, Clips, & Straps for Home Products (DIY)
Floor Tie Anchors (Wood Construction)
Straps & Ties (Cold-Formed Steel)
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Technical Bulletins (PDFs):
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Fliers (PDFs):
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Featured Literature:
Code Compliant Repair and Protection Guide for the Installation of Utilities in Wood Frame Construction
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