Where not spcci~fotlowing nun,murn concttrc cover (o~b,1de of ~ face of concrete) stould be obs«ved· J. inches at sides where coocrctc is cast ag_afost the ground and on bottoms of footmi S or other 1>rinc1pol ~trucrural mcmbtrs where conl.-rctc is pt. ccd on S!l!\Uld. (f!&. ll;l(all ~-2 inches for bars larger man #5, where concrete surfaces, after removal of fonns, will be cxp__Q$td to 1he weather or be in contuct with the ~ and l1/2incbc>for#Sbarsandsma Ccr. (fig. lm(b)) G. I1/2 1o<:hes 10 ouisideofties alld spirals in col WMs. (Fill, 11-l(c)) ~. LS mchcs lo nearest re orcmg bars on the top_, bottom beams and girce,s. (Fig. 11-l(d)) Ii, 1,jnc)) for. tt. Uond sma:Jcrbars on Jop, boltl!m an. d sides ofji,is. i,,, and. l!l1 ~ and bouom o :,labs where t:on\.-rctc ~ur 11<..Q ar~ not e,. pcx;cd dircctl to me ground o; t(1e w-..a,ber and I1/2 ui&hes fo, #14 and ~I~ bar$. (fig<. 11-l(e)and ll-l(f)) 6, V. mch from In< <cs or. II walls no. 1_9p()Scd duclli)' 10 the Jl[Oundof tho 11. 'fathor for #I J and smalle< bar,, and I1/2 inches for #14 aod #18 bats;. ffill-JJ. JQI)) TOLERANCES IN PLACEMENT ( ;cncnal II Js,mportnnt that re Ln or<:mg baf S be placat rut<l held rn posili~ shown on die placing drawir. gs. The strength of any remforced C:O!Krel¢ swctural member can Ge affected by the improper poo1tiomng of the reinforcuig b>!J. ~ cxmnpk:, lowcnna; lh,; lop bars or ruising; the hottom bars by 1/2 mch more chan l,pec m a-me cep s a&ooiifd reduce its oa cany,. og !;,!p>Clt)' by _ per cent Barsupp Ort S, si,a,:,ed ac:cordiag to industry practice for placing bar supports, should be suffi<:ient to position the reinfon:ing bats as required. Unless otherwise noted, reinforcing bars should be plaoed within the following construction tolmnces (AO 117}: I. Tolc:ranco fa< the clear dlsiance to formed soffit., hoold be-1/4 inch, and the tolonnco for concrete cow:r should not exceed minus ooe-third of the mioinnun concrete caver required on the project drawings or in the project specifications. Placing Reinforcing Bara-10th Ecltion 11-3 Section 609 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 6-9