Formwork
Economical marine-plywood formwork to reinforced concrete staircase
Stair/landing formwork with plywood facing, timber stringers/joists/bracing, 2x6/Peri support allowance, nails, release agent and higher-detail carpentry labour.
Methodology
Stairs attract more cutting, setting-out and striking labour than flat soffits; the labour factor is therefore separately visible and editable.
Source basis
Residential staircase/formwork methodology normalized with current formwork inputs. Sep 2026 Abuja audit checked plywood, timber, H20/Peri and labour market references; structural/shuttering quantities remain to be validated against a formwork layout. User-approved V2 rule: economical/cheap marine board = 3 casting cycles.
Quantity basis
See exactly what makes up the rate
The rate is analysed for 1 m² 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.
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Material quantities
Quantities shown are for one unit of the measured work. The right-hand quantity scales automatically to the work quantity you enter.
| Resource | Type | Qty / 1 m² | Resource unit | Qty / 1 m² | Unit price | Cost / m² |
|---|---|---|---|---|---|---|
| 18 mm economical marine plywood facing — 3 casting cycles4×8 sheet = 2.9768m²; charged over 3 casting cycles. Abuja construction-board working reference ₦27,500/sheet; editable. | Material | 0.112 | sheet | 0.112 | ₦27,500 | ₦3,079 |
| 2x3 framing / riser supports | Material | 0.35 | length | 0.35 | ₦1,300 | ₦455 |
| 2x2 cleats / bracing | Material | 0.3 | length | 0.3 | ₦1,000 | ₦300 |
| 2x6 stringer / bearer allowance | Material | 0.25 | length | 0.25 | ₦2,500 | ₦625 |
| Peri / H20 support allocationSep 2026 Abuja H20 working purchase reference: ₦16,900; allocation/reuse remains under validation. | Material | 0.04 | No. | 0.04 | ₦16,900 | ₦676 |
| 2–3 inch nails | Consumable | 0.012 | bag | 0.012 | ₦27,000 | ₦324 |
| Release agent / small sundries | Consumable | 1 | m² | 1 | ₦300 | ₦300 |
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 m² | Resource unit | Qty / 1 m² | Unit price | Cost / m² |
|---|---|---|---|---|---|---|
| Formwork carpenter | Labour | 0.3 | day | 0.3 | ₦15,000 | ₦4,500 |
| Carpenter helper / labourer | Labour | 0.3 | day | 0.3 | ₦8,000 | ₦2,400 |
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