Standard Specification For Building Works 2020 Jkr Pdf -

Grade 30 – 1:2:4 mix with maximum water-cement ratio 0.55. Grade 35 – Designed mix with minimum cement content 350 kg/m³.

a) Cement – Ordinary Portland Cement complying with MS 522: Part 1. b) Coarse aggregate – 20mm nominal size, crushed granite, complying with MS 30. c) Fine aggregate – Natural sand, grading Zone 2, MS 30. d) Water – Clean, free from oils, acids, alkalis, or organic matter. standard specification for building works 2020 jkr pdf

This clause covers the supply, mixing, transporting, placing, compacting, curing and finishing of structural concrete for all reinforced concrete elements excluding pre-cast concrete. Grade 30 – 1:2:4 mix with maximum water-cement ratio 0

a) Formwork – Rigid, true to line and level, removal time as per Table 7.4.4(a). b) Placing – Max free fall 1.5m, no segregation. c) Compaction – Mechanical vibrator, not contacting reinforcement. d) Curing – Minimum 7 days wet hessian or curing compound. b) Coarse aggregate – 20mm nominal size, crushed