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Rate analysis: 12 mm plaster 1:3 ceiling

Short answer

For 10 m² of 12 mm ceiling plaster (1:3), dry mortar 0.1524 m³ requires 1.097 bags cement and 0.1143 m³ sand. Direct cost NPR 5,027.05; with 15% overhead and 10% profit, total rate = NPR 6,283.82 per 10 m² (628.38/m²).

Prepare an analysis of rate for 12 mm thick cement plaster (1:3) in ceiling per 10 m².

Rates and labour norms below are illustrative (DUDBC-style norms; use the current District Rate and norms of the project area for a real estimate): cement NPR 1,000/bag, sand NPR 3,500/m³, 20 mm aggregate NPR 4,500/m³, skilled labour NPR 1,500/day, unskilled labour NPR 1,100/day, water lump sum, contractor's overhead 15% and profit 10% on direct cost (VAT excluded).

Quantities per 10 m²

  • Wet mortar =10×0.012=0.120= 10 \times 0.012 = 0.120 m³; dry =1.27×0.120=0.1524= 1.27 \times 0.120 = 0.1524 m³
  • Cement =1/4×0.1524=0.0381= 1/4 \times 0.1524 = 0.0381 m³ =1.097= 1.097 bags; sand =3/4×0.1524=0.1143= 3/4 \times 0.1524 = 0.1143 m³
  • Labour for ceiling (overhead work, about 25% more than wall plaster): mason 1.2 days, labourer 1.3 days; plus staging.

Analysis

ItemQtyUnitRate (NPR)Amount (NPR)
Cement1.097bag1,000.001,097.00
Sand0.1143m³3,500.00400.05
Skilled labour (mason)1.20day1,500.001,800.00
Unskilled labour1.30day1,100.001,430.00
Staging, water and curing (lump)1LS300.00300.00
Direct cost5,027.05
Contractor's overhead @ 15%754.06
Contractor's profit @ 10%502.71
Total (rate per 10 m²)6,283.82

Rate = NPR 6,283.82 per 10 m² (NPR 628.38 per m²).

✓ Answer checked by Claude Opus 5.5 (high effort)

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