# Bar bending schedule(by akhil)

Bar Bending Schedule By Akhil Lamdade Content Introduction B B S for different reinforced concrete structures Measurement of bending dimensions Do’s and Don'ts Typical bar bending schedule Codes , specifications and standards Bar Bending Schedule Member identification Bar mark Type of steel Diameter of bar Length of each bar Number of members Number of bars in each member Total number of bars Total length Shape code Bending dimensions BBS for RC Beams BBS for RC Slabs BBS for Columns and walls Measurement of bending dimensions Bent-up Bar h 45o h Additional Length = 0.414 h Total Length = L + 0.414 h L Do’s and Don’ts Proper accuracy Provide cover to rein Location of holes Bars >36mm shall not bundled Welding is not permitted at bends Typical BBS Calculation Example: Prepare bar bending schedule for the given beam. Clear cover = 40 mm 2-#20 +1-#15 4000 570 2-#20 2-#10 228 #10 @ 180 c/c Longitudinal Section 1-# 15 Bar Bending Schedule (contd…) Example: Prepare bar bending schedule for the given beam. Clear cover = 40 mm #10 @ 180 c/c 228 375 2-#10 1-# 15 2-#20 (M-2) (M-1) (S-1) (H-1) Cross Section Bar Bending Schedule (contd…) Example: M-1 M-1 = 4000 + 2 x 228 – 2 x 40 + 2 x (18 x 20) = 5096 M-2 h = 375 – 2 x 40 – 2 x 10 – 2 (15/2) = 260 h M-2 = 4000 + 2 x 228 – 2 x 40 + (0.414 x 260) x 2 = 5091 H-1 H-1 = 4000 + 2 x 228 – 2 x 40 = 4376 Bar Bending Schedule (contd…) Example: Prepare bar bending schedule for the given beam. Clear cover = 40 mm Number of Bars = 4000 / 180 +1 = 24 Round-up Shear stirrups a a = 375 – 2 x 40 – 10 = 285 mm b b = 228– 2 x 40 – 10 =138 mm Total length of S-1 = 2 (138 + 285 + 18 x 10) = 1206 mm Bar Bending Schedule Serial # Bar Designation Number of Bars Length of one Bar (m) Dia of bar Weight of Steel Bars Shape of Bar #10 #15 #20 1 M-1 2 5.096 20 24 2 M-2 1 4.591 15 7.2 3 H-1 2 4.376 10 6.9 4 S-1 24 1.206 10 22.7 1.05 Σ 31.1 7.6 25.2 Total Weight = 64 kg 4376 4376 4376 285 138 Codes , Specifications & Standards IS:2502-1963 IS:1893-2000 SP:34 IS:456 International standard ISO:4066-1977 some websites which are proving Bar Bending Schedule Software.  www.eigen-tech.com/cs.html  www.rgsrebar.com/rebar.aspx  www.ensoftindia.com/prod_barbeque.htm  www.steelpac.co.uk/design/steelpac_rdm...  www.cadsglobal.com  www.supercivilcd.com  www.technocad.co.za  www.BendingSchedule.com  www.structural-engineering.fsnet.co.uk...  www.continuousbeamanalysis.com Queries ? Thank you Good day