djocen1 ID lhc 1wo or bundled loose wilb lhc spiral for :lltac:llmcnt at 1hejob­ site. a,:ing the S{). 'tcers on oppostle sides of1he :spinal penmb the spird. l to be; ship J!Cd flat or '·coll. !l)sed," reqmrin~ space for <torage and shipmen L At the jobsi1c, the,pirals arc opened, and the spacers shifted so lhcy ore about equally spaced 8JOUl!d the pcrimctcroflhe spiral. Some spirals, because of their sma{I diameter, can:10< be collapsed. They are p_pcd with the sp3ccr:-mounted and ace Tahle 7-4 show:-the rnuumum <fo,meter or a collapsible spol, rc Jatcd 10 the spiral size. Spirals that include spacers are called assembled spirals. In some cases such as piles, piers or columns where the pitch is lo. rge or where lhc bar or wire diameter is quite small, or where the spir. 11 can be accurately spaced and tied to longitudinal reinforcing bars, spirals may be furnished hem into coi Is to the specified diameter and the propet numbcl-of turns without spacers. These an: known as unassembled spirals. iable 7-4 Mm1mum Splr. 11 Outside Diameters Minimum Outs,ide Diameter, in. Spiral Bar or Wire Slz:e Which Can Be Of Collapsible Formed Spiral #3 or 318 in. 8 18 #4 or 1/2 in. 10 18 #5 or 518 ln. 15 30 1#6 or 314 in. 24 30 OFFSET COLUMN BARS Offset column bars, ns ~hown in Fig. 1·S, arc bent'° the u1:,,per part, which projects beyond the ftoor abow, will fl! inside the vertical bars in the column above. The comer bars in a column need ID have a larger offiset than the bars along the sides, but for simplified fabrication and placing, a U offset bends in n column arc made using the latgest oflsct. Placlr,g FIMfon,tr Q Bn-100, Edition 7-15 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 6-9