AutoTight® by Commins
Manufacturing, Inc.
The Continuous Rod Holdown System
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   AutoTight® CAT Equivalents for TDS33
Required Loads per Simpson Catalog Form C-ATS05 Expires 1/31/07
2003 IBC Runs     1997 UBC Runs
 
CAT 3-67 (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 11,620 12,026 3,080
    R7 S8
CAT 3-67 (T31)

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CAT 3-67 (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 15,500 16,035 4,120
    R7 S8
CAT 3-67 (T31)

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Two Take-Up Device Equivalent     Two Take-Up Device Equivalent
       
CAT 3-567 (T321)
   Reqd  Tension Diff.
Level  Load  Load Load
   lbs  Rod Plate
3 3,790 6,136 3,790
     R5 S8
2 8,540 8,836 4,750
    R6 S8
1 11,620 12,026 3,080
    R7 S8
CAT 3-567 (T321)

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CAT 3-567 (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 15,500 16,035 4,120
    R7 S8
CAT 3-567 (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 3-7 (T3)
   Reqd  Tension Diff.
Level  Load  Load Load
   lbs  Rod Plate
3 3,790 12,026 11,620
    R7 S12
2 8,540 12,026  
    R7  
1 11,620 12,026  
    R7  
CAT 3-7 (T3)

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CAT 3-7 (T3)
   Reqd  Tension Diff.
Level  Load  Load Load
   lbs  Rod Plate
3 5,060 16,035 15,500
    R7 S16
2 11,380 16,035  
    R7  
1 15,500 16,035  
    R7  
CAT 3-7 (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.