AutoTight® by Commins
Manufacturing, Inc.
The Continuous Rod Holdown System
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   AutoTight® CAT Equivalents for TDS31
Required Loads per Simpson Catalog Form C-ATS05 Expires 1/31/07
2003 IBC Runs     1997 UBC Runs
 
CAT 3-5 (T31)
   Reqd  Tension Diff.
Level  Load  Load Load
   lbs  Rod Plate
3 3,790 6,136    3,790
     R5 S10
2    3,790 6,136  
     R5  
1  5,930 6,136 2,140
     R5 S8
CAT 3-5 (T31)

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CAT 3-5 (T31)
   Reqd  Tension Diff.
Level  Load  Load Load
   lbs  Rod Plate
3    5,060 8,181 5,060
    R5 S8
2 5,060 8,181  
    R5  
1  7,900 8,181 2,840
    R5 S8
CAT 3-5 (T31)

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Two Take-Up Device Equivalent     Two Take-Up Device Equivalent
       
CAT 3-5 (T321)
   Reqd  Tension Diff.
Level  Load  Load Load
   lbs  Rod Plate
3 3,790 6,136    3,790
     R5 S8
2    3,790 6,136 0
     R5 S8
1  5,930 6,136 2,140
     R5 S8
CAT 3-5 (T321)

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CAT 3-5 (T321)
   Reqd  Tension Diff.
Level  Load  Load Load
   lbs  Rod Plate
3    5,060 8,181 5,060
    R5 S8
2 5,060 8,181 0
    R5 S8
1  7,900 8,181 2,840
    R5 S8
CAT 3-5 (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 3-5 (T3)
   Reqd  Tension Diff.
Level  Load  Load Load
   lbs  Rod Plate
3 3,790 6,136  5,930
     R5 S8
2    3,790 6,136  
     R5  
1  5,930 6,136  
     R5  
CAT 3-5 (T3)

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CAT 3-5 (T3)
   Reqd  Tension Diff.
Level  Load  Load Load
   lbs  Rod Plate
3    5,060 8,181  7,900
    R5 S8
2 5,060 8,181  
    R5  
1  7,900 8,181  
    R5  
CAT 3-5 (T3)

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Single Take-Up Device Equivalent     Single Take-Up Device Equivalent
Embedments
(under construction)