CivilTech Studio blog
Articles on structural design, foundations, concrete, site practice and Indian codes — written by CivilTech Studio engineers and our community.
#concrete#quantity-estimation#cement
How many bags of cement and how much sand and aggregate go into 1 m³ of M20 or M25 concrete: the 1.54 dry volume method compared with a design-mix table.
8 min read
Work out cutting and filling volumes from cross-sections by the average end area and prismoidal methods, with bulking, shrinkage and a 100 m road example.
8 min read
How to prepare the bar bending schedule of an RCC slab: bar spacing, number of bars, cutting lengths, bend deductions and steel weight, with a 3 m × 4 m slab.
8 min read
#steel-weight#reinforcement#bbs
How to calculate the weight of a steel bar with D²/162: where 162 comes from, a kg/m table for 6 to 40 mm bars, and worked examples for 12 mm bars.
6 min read
Calculate the cutting length of a rectangular stirrup step by step: outside dimensions, 135° hooks per IS 13920 and the IS 2502 bend allowances, with a worked 230 × 450 mm beam example.
5 min read
#is-456#concrete-testing#cube-test
Concrete cube test acceptance criteria to IS 456 Cl 16 and Table 11 (as amended): the fck − 3 individual limit, the 4-result group mean, sampling frequency, invalid samples and a worked M25 register with ten pours.
15 min read
