AutoTight® by Commins
Manufacturing, Inc.
The Continuous Rod Holdown System
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   AutoTight® CAT Equivalents for TDS34
Required Loads per Simpson Catalog Form C-ATS05 Expires 1/31/07
2003 IBC Runs     1997 UBC Runs
 
CAT 3-68 (T31)
   Reqd  Tension Diff.
Level  Load  Load Load
   lbs  Rod Plate
3    3,790    8,836 8,540
     R6  S10
2    8,540    8,836  
     R6   
1  15,180  15,708 6,640
     R8  S8
CAT 3-68 (T31)

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CAT 3-68 (T31)
   Reqd  Tension Diff.
Level  Load  Load Load
   lbs  Rod Plate
3    5,060  11,781 11,380
     R6  S12
2  11,380  11,781  
     R6   
1  20,240  20,944 8,860
     R8  S10
CAT 3-68 (T31)

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Two Take-Up Device Equivalent     Two Take-Up Device Equivalent
       
CAT 3-568 (T321)
   Reqd  Tension Diff.
Level  Load  Load Load
   lbs  Rod Plate
3 3,790 6,136 5,060
     R5  S8
2 8,540 8,836 6,320
     R6  S8
1 15,180  15,708 8,860
     R8  S10
CAT 3-68 (T321)

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CAT 3-568 (T321)
   Reqd  Tension Diff.
Level  Load  Load Load
   lbs  Rod Plate
3    5,060    8,181 5,060
     R5  S8
2  11,380  11,781 6,320
     R6  S8
1  20,240  20,944 8,860
     R8  S10
CAT 3-68 (T321)

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Take-Up Device Every Level
 Required by Many Structural Plans		     Take-Up Device Every Level
Required by the City of San Diego
       
CAT 3-8 (T3)
   Reqd  Tension Diff.
Level  Load  Load Load
   lbs  Rod Plate
3    3,790  15,708 15,180
     R8  S16
2    8,540  15,708  
     R8   
1  15,180  15,708  
     R8   
CAT 3-8 (T3)

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CAT 3-8 (T3)
   Reqd  Tension Diff.
Level  Load  Load Load
   lbs  Rod Plate
3    5,060  20,944 20,944
     R8  S22
2  11,380  20,944  
     R8   
1  20,240  20,944  
     R8   
CAT 3-8 (T3)

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Single Take-Up Device Equivalent     Single Take-Up Device Equivalent
Embedments
(under construction)		    
Compression Trimmers
Douglas Fir-Larch
 Hem-Fir
 
 
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Copyright 2005  Commins Manufacturing, Inc., Friday Harbor, WA 98250, Tel (360) 378-9484
 

AutoTight® Rod Holdown Systems and components are covered by one or more of the following U.S. Patents 6,390,747; 6,585,469; 6,625,945, other patents both foreign and domestic are pending.