Back to Rate BankUnder validationUnder validation. The calculation remains usable and editable, but current material/labour inputs are still being checked against fresh market observations and project evidence before verification. Basis: 1 m³
Reference-use note:This rate is an execution-cost reference, not a project quotation. Project specification, procurement source, haul distance, productivity, access, programme, taxes, preliminaries and commercial terms can change the final price. The editable calculator does not modify Charismak's public reference rate.
RB-EW-002Under validation
Earthworks
Manual excavation to foundation trenches
Excavate normal soil by hand to foundation trenches not exceeding about 1.0 m depth; trim sides and bottoms. Disposal excluded.
Abuja–Keffi market, NigeriaReviewed 26/09/2026
Methodology
Labour-only rate carried from the uploaded residential calculation workbook and intentionally marked for current trade-rate review.
Source basis
2-bedroom material & labour BOQ guide.
Working reference — under validation₦4,793per m³ · O/P 0%
Direct execution cost₦4,500Materials + labour + plant + logistics
Private calculator₦4,793per m³ · your edits stay private
Total for your quantity₦4,7931 m³ × your current rate
Quantity basis
See exactly what makes up the rate
The rate is analysed for 1 m³ of work. Enter the quantity you actually want to execute and every material, labour and plant quantity below will scale without changing the public Charismak reference rate.
Open full Material EstimatorRate basis: 1 m³
Workmanship
Labour build-up
Labour is shown as the crew, trade, gang-day, day or piecework quantity used to produce one unit of the measured work.
| Resource | Type | Qty / 1 m³ | Resource unit | Qty / 1 m³ | Unit price | Cost / m³ |
|---|---|---|---|---|---|---|
| Excavation labourEditable guide rate per cubic metre. | Labour | 1 | m³ | 1 | ₦4,500 | ₦4,500 |
Personal rate calculator
Change quantities, prices and allowances
Click Edit & calculate my rate to change the material quantities, material prices, labour input, plant/logistics and allowances. Your changes do not alter the rate shown to other visitors.
Cost additions
Fluctuation, risk and O/P
Physical wastage belongs in the resource quantity itself. Price fluctuation is a separate financial allowance. Risk is calculated on direct execution cost, while O/P is applied afterwards.
Calculation summary
Materials & consumables₦0
Labour₦4,500
Plant & logistics₦0
Direct execution cost₦4,500
Material fluctuation₦0
Labour fluctuation₦68
Plant/logistics fluctuation₦0
Risk₦225
O/P₦0
Current calculation₦4,793per m³
Total for 1 m³₦4,793