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CONSTRAINED REQUIRED SLAB AREA PER POST <br />FOOTING SIZE (SQUARE FEET) <br />d (IN)CONCRETE SLAB THICKNESS (IN) <br />3.5"5.5"7.25" 9.25" <br />20 10 · <br />21 12 <br />22 14 <br />23 16 <br />24 18 <br />25 20 : <br />26 23 <br />27 26 <br />28 30 <br />29 33 <br />30 37 <br />31 41 <br />32 46 <br />33 51 <br />34 56 <br />35 62 <br />36 68 <br />37 75 <br />38 82 , <br />39 89 <br />' 26 17 13 <br />31 20 15 <br />36 23 17 <br />41 26 20 <br />47 30 23 <br />54 34 26 <br />61 39 30 <br />70 44 34 <br />78 50 38 <br />88 56 42 <br />98 63 48 <br />110 70 53 <br />122 78 59 <br />135 86 65 <br />149 95 72 <br />164 104 79 <br />180 115 87 <br />198 126 95 <br />216 137 104 <br />236 150 114 <br />40 257 163 124 97 <br />41 279 178 135 106 <br />42 303 193 146 114 1 <br />43 328 208 158 124 4 <br />44 354 225 171 134 <br />45 382 243 185 145 <br />46 412 262 199 156 <br />47 443 282 214 168 <br />48 476 303 230 180 <br />49 511 325 247 193 <br />50 547 348 264 207 <br />¢77, <br />9- t' <br />6 . <br />BUILDING PRODUCTS <br />2440 Albright <br />Houston, TX 77017 <br />(713) 946-9000 <br />L 1,02 9 <br />Carl Putnam, P. E. <br />3441 Ivylink Place <br />Lynchburg, VA 24503 M8-2009 <br />l <br />ICC ESR 1953 (2009 IBC) 12/5/2011 <br />Page 101 of 101 <br />-49 ,. 1.