HOME 26" THICK-FLANGE DOUBLE TEE
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26 inch Double Tee X-Section

SECTION PROPERTIES
I  = 42411  in4 Zt  = 6164  in3 Zb  = 2218  in3 A  = 796  in2
W  = 86  psf Yt  = 6.88  in Yb  = 19.12  in    


ALLOWABLE SUPERIMPOSED LOAD (in pounds per square foot)
SIMPLE SPAN (in feet)
Number of ½" Ø strands per tee 30 34 38 42 46 50 54 58 62 66 70 74          
6 (straight) 137 91 58 35                          
6 (harped) 151 102 67 42 23                        
8 (straight) 192 133 93 63 40 23                      
8 (harped) 220 156 110 77 53 33                      
10 (straight) 240 171 122 87 61 39 21                    
10 (harped) 287 207 152 111 81 57 37 20                  
12 (harped) 350 257 191 144 108 78 55 36 21                
14 (harped) 411 304 229 174 132 98 72 51 34 20              
16 (harped) 468 349 265 203 155 117 88 65 46 30              
18 (harped) 522 390 298 228 176 135 104 78 58 41 27            
20 (harped)   430 327 252 196 152 118 91 69 50 35 22          
22 (harped)       274 214 168 131 102 79 59 43 29          

NOTES:

  1. The minimum top flange reinforcement is WWF 4x4-W2.9/W2.9, and the maximum safe uniform load on the flange with minimum reinforcement is 180 psf. Additional flange reinforcement will be required for loads in excess of 180 psf.
  2. Interpolation between values shown is acceptable.  Do not extrapolate values into the blank spaces of the table.
  3. These Span-Load Tables are intended as an aid to preliminary sizing. Sound engineering judgement is required for the application of this information to specific design cases.
  4. Values in the lower left of the table in bold type represent conditions where shear reinforcement is required. See SHEAR in "Design Criteria..." for discussion.
  5. Values in the lower left of the table in bold red type represent conditions where (1) shear reinforcement is required and (2) top flange tension reinforcement is required in addition to the standard flange mesh.
  6. See "Design Criteria..." for definitions of HIGHLIGHTING. Highlighting not visible on printed copy (screen only).