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7.0 CONCRETE FOOTING OPTIONS <br />EQUIVALENT FOOTINGS FOR <br />FREESTAND AND ATTACHED <br />DIAMETER OF <br />CIRCULAR <br />z€ RE FOOTINGS (IN) <br /> C' f 0 12" 18" 24" 36" <br />052 COZ <br />HC ZF <br />80 2 DEPTH OF CIRCULAR <br />O - o FOOTINGS (IN) <br />Z <br />14"17 24"14"14"14" <br />15"18"30"15"15"15" <br />16"19"36"16"16"16" <br />17"21"43"19"1 T'1T' <br />18"22" 52"23"18"18" <br />19"23"61"27"19"19" <br />20"24"n/a 31"20"20" <br />21"26 Wa 36"21"21" <br />22"27"nia 42"24"22 <br />23"28"Wa 48" 27"23" <br />24"30"rda 54"31"24" <br />25"31"nia 61"35"25" <br />26"32"nia 69"39"26" <br />27"34" nia 77"44"27" <br />28" 35"nia 86" 49"28" <br />29"36" rda nia 54"29" <br />CONVERSION TO SQUARE TOP FOOTING <br />For Single Span Attached <br />Footings Only <br />Footing Depth <br />18"24"30"36" <br />d (in) Required Side of Square Footing <br />20"21"18"16"15" <br />21"23"20"18"16" <br />99„24"21"19"17" <br />23"26"23n 20"18" <br />24"28"24"21"20" <br />25"29"26"23"21" <br />26"31"27"24"22" <br />2T'33"29"26"23" <br />28"35"30"27 25" <br />29'37"32"29"26" <br />30"39"34"30"27" <br />31"41"35"32"29': <br />32"43"37"33"30" <br />33"45"39"35"32" <br />34"47"40"36"33" <br />35"49-42n 38"35" <br />36"51"44.39"36" <br />37"53"46"41"38" <br />38"55"48"43"39" <br />39"57'50.44"41" <br />40"60"52"46"42" <br />41"NA 54"48"44" <br />SITE SPECIFIC FOOTING TABLE <br />for SINGLE SPAN Attached Structures <br />Wind Condition Lattice <br />Trib 90 mph 90 mph 110 mph TribAreaExp B Exp C , Exp C Area <br />(sq ft) Required "d" of Footing (in) (sq ft) <br />15 15"1 T'20" 25 <br />20 17 19"21" 33 <br />25 -18"20"23"42 <br />30 19"21"25" 50 <br />35 20"23"26" 58 <br />40 21"24"27" 67 <br />45 14.25"28" 75LL <br />50 23"25"29" 83 <br />55 23"26"30" 92 <br />60 24"27"31"100 <br />65 25"28"32"108 <br />70 25"28"33"117 <br />80 26"30"34"133 <br />90 27"31"35"150 <br />100 28"32"37"167 <br />110 29"33"38"183 <br />120 30"34"39"200 <br />130 31"35"40"217 <br />140 32"36n 41"233 <br />150 33"37"42"250 <br />160 33"37"43"267 <br />170 O,11¥38"44"283 <br />ifili....././.555555555/ / Eisang Residence <br />A .1 1 <br />Panel Span 1/2 OF PANEL SPAN <br />Comer Trib Area I Trib Area for | 1/2 OF PANEL SPAN <br />| Middle Post <br />1 1 <br />64 0 :k 01 <br />1 Post Spacing Panel <br />1 1 .Overhang <br />I . <br />Figure 1 <br />Determine Trib Area from Figure 1 <br />INSTRUCTIONS TO USE TABLE 7.10 <br />1. TABLE IS FOR SINGLE SPAN ATTACHED UNITS ONLY <br />2. DETERMINE ACTUAL TRIBUTARY AREA <br />FOR MIDDLE POSTS THIS IS: <br />TRIB WIDTH x POST SPACING <br />FOR END POSTS THIS IS: <br />(OVERHANG+ HALF OF POST SPACING) x TRIB WIDTH <br />3. DETERMINE FOOTING SIZE FOR WIND CONDITION <br />4. FOR LATTICE USE LAST COLUMN FOR TRIB AREA <br />" 38"nia rda 60"30"42"N/A 56"50"45"180 35"39"45"300 <br />" 39"rda rda 66"31"43"N/A 58"51"47"190 35"40"45"317 <br />AA"" 40"rda nla 72"32"N/A 60"53"49-200 36"40"46"333 <br />" 42"n/a n/a 79"35"45'N/A N/A 55"50"210 36"41"47"350 <br />43" Wa rda 87" 39" 46" N/A NA 57" 52" 220 37" 42" 48" 367 <br />" 44 nia rda 95"42"47"NIA NA 59"54"230 38"42 48"383 BUILDING PRODUCTS <br />46"n/a n/a 103"46"48.14/A N/A N/A 55"240 38"43"49 400 2440 Albright <br />" 47"rda n/a 112"50"49"N/A N/A N/A 57"TABLE 7.10 Houston, TX 7701 <br />48"Wa n/a rda 54"50"NA N/A NA 59"(713) 946-9000 <br />" 50 rda n/a n/a 58"TABLE 7.9 6%*set <br />" 51" n/a rda rda 63"Carl Putnam, P. E.-*C\.Rl <br />" 53"nia n/a rda 68" 3441 [vylink Place 1 39 173 <br />" 54"nia rda n/a 73" Lynchburg, VA 24503 *15 )* <br />" 55" rda rda n/3 78" \\'.Ae=-21,n 57"n/a rda rda 84" TABLE 7.8 #'./&-DEC 5 2011 /-40:i<&,fl ' <br />UNNitk 2043 1 <br />9 <br />M4-2009 <br />V <br />ICC ESR 1953 (2009 IBC) 12/5/2011 <br />Page 97 of 101 <br />0 <br />=mETIHILs .si® <br />93) S <br />0 <br />\9»,t,eflvIL <br />8 C