Even the best structural design fails with poor materials. Here is what to check before cement, rod and bricks reach your slab.
Cement
- Check the manufacturing date — use fresh stock.
- Bags should be sealed, free of lumps and stored on a raised, dry platform away from walls.
- Use the type your engineer specifies for each element.
Steel rod
- Buy the grade written on the structural drawings and ask for mill test certificates.
- Check markings on the bar, diameter and absence of heavy rust or cracks when bent.
- Store off the ground and covered.
Bricks
- Well-burnt bricks give a clear ringing sound when struck together.
- They should be uniform in size and colour, with sharp edges.
- Soak bricks before laying for good bonding.
Sand and aggregate
Use clean, well-graded sand and stone chips free of clay and salt; dirty aggregate weakens concrete.
Work with organised suppliers
Reliable suppliers keep clear records of what was delivered and what is due. Many shops now use Hisabun, a Bangla business app for shops, which makes delivery and payment reconciliation simple. If you run a material shop, our Hisabun guide explains how it helps.
Test when in doubt
Concrete cube tests and rod tensile tests are inexpensive insurance. BeTech's construction supervision includes material checks at every stage — see also earthquake-resistant design.
