Form tics, nchon, lnse. ns and otht. r items., nae directly related to reinforcing bar placing, Clll be in. slallcd before oc after the bars are placed. Such install rioos may be tbe worl< of olher trades. Cooperation of the lrooworker Supervi­ sor and his workers with the supervisors and wodc. crs in the other trades is nec­ """"Y for the orderly inm!lation oran such materials, and to avoid disloc:otion of the cein. fun:mlen t. Bar UJ>J)Orts. Be. cm,md,m,lcr reinf Of Cing bar.. must be adequ. uely supp Qr!cd IJl the formu Q_~enl dbpbcc::mc:n1. by concrc:c placemcm or hy ~ Frcquen Oy, beam bars are placed in rwo or rnore layers and «:q Uire bar separa­ tora IO be pllccd between the layers at a mioimumof5'-0". JOISTS Joist bars an: placed after all beam reinforcement is in plaoc in 1he beana that suppon the joisls. Figure 13-6 shows typical bar suppot'IS used in <mo-w. iy joist construction. ,~use rcinf'on:cd concrete JOISts USU3Uy havt tv. t') hnuorn reir\lorcmg_bars, a jofs: ch:tfr i-t made wi1h a lop wire formed with ootches or saddles. JQ_juppo_n the nvo bars and rest on either two or 1tmx; supporting legs. s. dependi"8--0fl the ~. zcrec1ed fhc ch. air IS abou1 1/, inch IIOIT°""-T than 1~w 1dth 3. ltd, is furnished ai a oornp ete unit requiring no,~Id tutting, Jobl chairs arc place~ beginning I foottrom die edge of each support and al intcrmeclio tc spa;;,ings as c o:ie lo. 5 foe~ maxuuum sp:;iclng a. 'i possible. lbe long bottom bar is Chen placed on the joist chairs, by threading between beam stirrups and under lop beam ba JS if neccos,uy. The long bottom bar must project into ti. : supports at each end, u called for on lhc pl Jlcina t!r.,winp and within proper construction rolcrances. 13-6 Co11C1111o Relnfo,,:t,g Stool lnalltulo 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