Showing posts from December, 2020

What is Chair Reinforcement in Building Construction ?

  Chair Bar Chairs shall be provided to keep the bars in position. Chairs shall be provided to maintain spacing between top and bottom  reinforcement bar of Slab and Raft  etc. Chairs to be spaced at nominal 1000 mm centers U.N.O. Dia of Chair Bar Recommended = hc/50 but not less than 12 mm.            T 1 & T2 Top Reinforcement Bar.            B1 & B2 - Bottom Reinforcement Bar. Thanks for  reading this article. If you find this article helpful please, don’t forget to share and  Subscribe  Afroz Civil website and YouTube Channel for Latest Update. I hope this check list points will be helpful for every site Engineer. 😍Join Our YouTube Channel   Click here    😍Join Our WhatsApp Group   Click here I always Update helpful information and share my practical experience at this site. Please Give your feedback in comment box.

Different Types Of Cover Block Use At Construction Site

D ifferent Types of Cover Block Use at Construction Site!   Cover Block: -  Cover block shall be provided to keep the bars in position. Cover block shall be same grade of concrete as that of concrete member in which cover block are placed. It shall be not less than the diameter of the reinforcement bar.   Clear cover to all reinforcement shall be as follows :    1.      Slabs                                 = 20 mm or dia. of bar whichever is greater. 2.      Beam , (Stirrups/Link)     = 25 mm 3.      R.C.C Wall (General)  ·         Vertical Bar (Inner face)     = 25mm.                                        ·         Vertical Bar (Earth face)     = 40mm 4.      Footings   = 50 mm 5.      Raft  ·      Top = 50 mm  ·      Bottom     = 60 mm   6.      Column   / Boundary Elements :                 ·         Face up to 230 mm  40 mm to main bar ·         Face more than 230 mm        40 mm to Ties /Link 7.      Water