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1 votes✓ 1 answer50 views
How much steel is needed for a 1,200 sq ft G+1 house? Is 4 kg per sq ft right?
I need a rough steel quantity (kg) for a G+1 RCC framed house, 1,200 sq ft per floor, before asking suppliers for quotes. Is the 4 kg per sq ft thumb rule still valid for Fe500?
0 votes✓ 1 answer43 views
What lap length should I use for a 16 mm Fe500 bar in an M25 column?
The drawing says "lap as per IS 456" but the contractor wants to use 40d everywhere. This is a column (bars mainly in compression), M25 concrete, Fe500 bars, seismic zone III. Is…
0 votes✓ 1 answer52 views
M25 cube test gave 16.2 N/mm² at 7 days — is that a problem?
Slab poured last week with M25 (OPC). The 7 day cubes averaged 16.2 N/mm². The site engineer says it will reach 25 at 28 days. What is the normal 7 day strength, and when should w…