AutoTight® by Commins
Manufacturing, Inc.
The Continuous Rod Holdown System
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   AutoTight® CAT Equivalents for TDS35
Required Loads per Simpson Catalog Form C-ATS05 Expires 1/31/07
2003 IBC Runs     1997 UBC Runs
 
CAT 3-89 (T31)
   Reqd  Tension Diff.
Level  Load  Load Load
   lbs  Rod Plate
3 8,540 15,708 15,180
    R8 S16
2 15,180 15,708  
    R8  
1 19,210 19,880 4,030
    R9 S8L
CAT 3-89 (T31)

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CAT 3-89 (T31)
   Reqd  Tension Diff.
Level  Load  Load Load
   lbs  Rod Plate
3 11,380 20,944 20,240
    R8 S22
2 20,240 20,944  
    R8  
1 25,620 26,507 5,380
    R9 S8L
CAT 3-89 (T31)

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Two Take-Up Device Equivalent     Two Take-Up Device Equivalent
       
CAT 3-689 (T321)
   Reqd  Tension Diff.
Level  Load  Load Load
   lbs  Rod Plate
3 8,540 8,836 8,540
    R6 S10
2 15,180 15,708 6,640
    R8 S8
1 19,210 19,880 4,030
    R9 S8L
CAT 3-689 (T321)

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CAT 3-689 (T321)
   Reqd  Tension Diff.
Level  Load  Load Load
   lbs  Rod Plate
3 11,380 11,781 11,380
    R6 S12
2 20,240 20,944 8,860
    R8 S10
1 25,620 26,507 5,380
    R9 S8L
CAT 3-689 (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 3-9 (T3)
   Reqd  Tension Diff.
Level  Load  Load Load
   lbs  Rod Plate
3 8,540 19,880 19,210
    R9 S19
2 15,180 19,880  
    R9  
1 19,210 19,880  
    R9  
CAT 3-9 (T3)

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CAT 3-9 (T3)
   Reqd  Tension Diff.
Level  Load  Load Load
   lbs  Rod Plate
3 11,380 26,507 25,620
    R9 S28
2 20,240 26,507  
    R9  
1 25,620 26,507  
    R9  
CAT 3-9 (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.