Dry Density & Compaction Check
Ref: JKR Standard Specification for Road Works, Section S/4
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ρd = ρw / (1 + w/100) | Compaction % = (ρd / MDD) × 100
Ref: JKR Standard Specification for Road Works, Section S/4
From weighing
Empty mould mass
Standard: 944 cm³ (BS 1377) or 2305 cm³ (CBR)
From oven-dry test
From Proctor test
JKR: 95% subgrade, 98% subbase
Wet Density
—Mg/m³
Engineering aid only — final design must be endorsed by a registered PE under BEM.
Dry Density
—Mg/m³
Engineering aid only — final design must be endorsed by a registered PE under BEM.
Compaction
—%
Engineering aid only — final design must be endorsed by a registered PE under BEM.
Disclaimer: This output is an engineering calculation aid only and does not constitute a final or endorsed design. All designs submitted to Malaysian authorities must be endorsed by a registered Professional Engineer (PE) under the Board of Engineers Malaysia (BEM) in accordance with the Registration of Engineers Act 1967.