,,_. q"P$plb \ I \ I See Placing Draw"1g for uo Splk:e Lengtfhs of Tem,:,. raturt Ban or W~ Wiro ~nfol'comont F g. 13-8 Joist Construction Temperatur-o Reinforcement Welded wire reinforoement (see Fig. 13-8), where used, is also typically placed on the outer most layer of bots. Ahhougll it may consist of equal sii. od and spaced wires in both directions, the welded wire reinfoo:::. e,nen1 sornetimes has: larger, mo,e closdy spaced wires in one direction. These run the length of the welded wire reinfon:emcot and arc placc<I aero.. the joils. Wc:ldtd wire re,. inforo,ment in sheeis must be placed in spocilic localiu:ns. \'\\:ldcd wire rein­ forcement must be kept in proper position and be level before placing concn:te. Wc:ldcxl wire reinforcement may have IO be cut to fit aod should extend, aod perhaps bend down into, !he spondrcl or edge beam. Wben placing welded wire reinforcemen t, the specified side and end bps should be observed. Welded wire reinforcemen t sbould be secured to supports to avo:d displaoement. Undcrflour duct syttcms. C':3rr)'lrl. S elect. neat wiri11. S,. 1R: pt ACt. '<. I 00 ~mum... p. :iru> 1 or Sp<cial hcadc:rs after beam rcin:orcarem ls pla,:ed but bef0< joist ~ a,e placed lt is necessary to M'. Xl<-. id 1ll= duels, placing die rciororcing hors °""' or under the di. ICU as roquirod without mo,,ing the duels from 1heir set position. ONE-WAY SLABS Main ninforw:nent usually consists of alternating loog and short bottom and lop bars. This reinforcemeot eocteods in one direction bctwccn supports. Tem­ perotun: bars arc placed at right angles to the inoin rein. forcing bol'll. Bar Supports. The bottom n:inforcing bm in slabs are supporred by slab bol Sltr S. Sfndard stock !cng;h:; of <lal!_PQWm ~ ~ o<..l. O... fl:c J ~Jl]l)~ one lcn. &th of~lab bol"tcr L'-U. ~ m asmglc hnc. _il i~ :;ugg. c. i,. 1ed lh3t the end legs be locked logetbcr !o prevent a MP th~ht all OI' a bottom_bar to fall lo the slab soffi1 form, as shown in Fig. 13-9. P1a,:t,g RM11o"'"1g Batt-10th Edili On 13-9 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 6-9