\ WALLS Basement walls are teinfo,ced in eilber one or both &ees. The rcinfom:mem usually couslsls of wnical and hori:rontal ban IO form a mat or cuiwn. The larger, more closely-spaced bars may bo ei Uier wnical or horiton1al, depending on the design. The')' arc usually placed nearer to U,e sarfuce or face of the wall. The smaller and more widely-spaced lio (or lem J>Cra!Ure and mrinlalg,:) b:m cross die main reinforcing bars at right angles and are farther from lhe face of the wall. In some lh. in w>lls, a single CUJUln of smaller lo bars, widely-spced temperature and shrinkage bars may be used bolb,"7tically and horimntally, end placed in the cenier of the wall,a,shown in Fig. 12-13. After the oontinuoos wall fnotina has been consuucted, with vertical dowels project­ ing, formwori< is erecled and secun,ly bmc:ed for only one face of the wall. The project ing d<lwcl:.. ottlinanly of the same sii. e and Spacing as lhc vertical ba J-.,, may be tied,o 1he,,:nic-,1 bar do-. "cls. Oi,o hon7. 011ca br,. r-is,,e Q. 10 the ve. rt1ttl b,:u..c lt) k~p theui plmnb and a, the required Fig. 12·13 One Cunaln o1Wall Bars,pro"&· Then thcou. :r hon zontal bm are placed. Th horizonul and vertical bars r-hould b< 1..-l i;ecun>ly ~... h other 01,utli<;icmtl)I frequent ime. rva Ts to m:tke a rigid cum. in. ·111t--t1lltnhe. r of 1ic S tequ1~wi ll {lc­ pend on the sire and spacini J)f reinrorcing bar<,_ but <here sl>ould "91 be f.,..,, lhan three ties to a. ny one 1>3. 'r, and, 1n any c:3. Si:, th~ Ile"~ sh(lll:J not be-spaced more than 4 to 6 feel apart in oi!hcr dirn:lior. 12-14 Concnrte-ing Sb,el ln&blu!e 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 40 41 42 6-9