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Age of Cement as per Indian Standard Code Age of Cement as per Indian Standard Code What is the Age of Cement? The "age of cement" refers to the time elapsed from the date of manufacture to the date of use. Cement, being hygroscopic in nature, absorbs moisture from the environment over time. This exposure affects its chemical properties, resulting in reduced strength, compromised workability, and delayed setting time. The age of cement is critical because cement loses its strength and binding capacity progressively after manufacture, especially when stored improperly. Therefore, understanding its age and following guidelines is crucial for ensuring the quality of construction. Indian Standard Code Guidelines on Cement Age The Indian Standards specify the following gu...

Stripping Time of Formwork as per IS 456: 2000 The stripping or removal of formwork in concrete construction is a critical step, as it ensures that the concrete has attained sufficient strength to bear its self-weight and any additional loads. The Indian Standard IS 456: 2000 provides clear guidelines on the duration for which formwork should remain in place before being stripped, depending on the structural element and span length. Clause 11.3.1 of IS 456: 2000 – Formwork Removal Guidelines The recommended time frame for removing formwork are based on standard curing conditions (use of Ordinary Portland Cement at normal ambient temperatures). Below are the specified stripping times: 1. Vertical Formwork for Columns, Walls, and Beams Minimum Stripping Time: 16 to 24 hours after casting. Reason : Vertical members like columns and walls do not bear significant load immediately and can safely support themselves once the concrete sets. 2. Soffit Formwork (Bottom Shuttering) for Slabs Minim...

  Typical Lintel Beam Detail Drawing Pdf.   Thanks for download and read this drawing . If you find this Drawing  helpful please, don’t forget to share and  Subscribe  Afroz Civil website and YouTube Channel for Latest Update. I hope this drawing will be helpful for every site Engineer. I always Update helpful information and share my practical experience at this site & on our YouTube Channel. Download this drawing in Pdf     Click here 😍Join Our YouTube Channel  Click here    😍Join Our Facebook page  Click here I always Update helpful information and share my practical experience at this site. Please Give your feedback in comment box.

  As per IS 456 : 2000 Clasue 6.2.3.1  Page No. 16. M odulus of elasticity of Concrete can be calculated by following formula: Ec = 5000 √fck N/mm2  Where Ec is short term static modulus of electricity. Actual measured values may differ by plus minus 20 % from the values obtained from the above expression. Example :-  Q. As per IS 456:2000 , which one of the following correctly expresses the modulus of elasticity of Concrete ?  a) Ec = 0.7 √fck N/mm2 b) Ec = 500 √fck N/mm2 c) Ec = 5000 √ fck N/mm2 d) Ec = 5700√fck N/mm2 Correct Answer is c ) Option. 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 article will be helpful for every  Engineer. 😍Join Our YouTube Channel Click here    😍Join Our Facebook page Click here I always Update helpful information and share my practical experience at this site. Please Give your ...

Chair Bar Guidelines for Reinforcement Chair Bar Guidelines for Reinforcement (As per IS Code) 1. Purpose of Chair Bars Chair bars are used to hold the reinforcement bars in position during construction to prevent displacement while pouring concrete. They ensure the required spacing is maintained between the top and bottom reinforcement bars as per design specifications. 2. Spacing of Chair Bars As per IS 456:2000 – Plain and Reinforced Concrete Code of Practice : Chair bars should be spaced at nominal 1000 mm centers , unless specified otherwise. For heavily reinforced slabs or where vibration may cause displacement, spacing can be reduced to 600-800 mm . 3. Diameter of Chair Bars As per IS 2502:1963 : The diameter of a chair bar is recommended as hc/50 , where hc is the clear cover. The diameter should not be less tha...

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.                    ...

How To Calculate The Weight of Mild Steel Angle For Billing Derivation M.S Angle *Mild Steel of  Equal Angles : 20 x 20 x 3 mm to 200 x 150 x 18 mm Example for better understanding Angle Size is  50  x 50 x 5 mm *Unit weight of steel is 7850 Kg / m3 * Formula Weight of Mild Steel angle is in Kg/m    = Volume x Unit weight of steel. Volume for Part (i) = 1 x 0.050 x 0.005 = 0.00025 m3 Part (ii) = 1 x 0.045 x 0.005 = 0.000225 m3 Total Volume = 0.00025 + 0.000225 = 0.000475 m3 Weight of M.S angle = Total volume x unit weight of steel = 0.000475 x 7850 = 3.728 Kg/m ∼ 3.8 Kg/m Same calculation for other dimensions of Mild Steel Angle.   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...