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🏗️ ADVANCED FORMWORK CALCULATOR
All prices in KES (KSh)
1. FORMWORK TYPE & DIMENSIONS
Select Formwork Type
📏
Slab Formwork
Horizontal concrete surfaces
⎍
Beam Formwork
Horizontal structural beams
⬛
Column Formwork
Vertical structural columns
🧱
Wall Formwork
Vertical walls and retaining walls
🏗️
Foundation Formwork
Strip and pad foundations
🪜
Staircase Formwork
Concrete staircases
Number of Elements
Reuse Factor (times)
How many times formwork can be reused
Length (mm)
mm
Width (mm)
mm
Height/Depth (mm)
mm
Formwork Type
Slab Formwork
Contact Area
-- m²
Formwork surface area
Concrete Volume
-- m³
Total concrete needed
Concrete Pressure
-- kPa
Hydrostatic pressure
2. FORMWORK MATERIAL
Select Formwork Material
📄
Plywood (12mm)
10-15 uses | 7.5 kg/m²
📋
Plywood (18mm)
15-20 uses | 11.2 kg/m²
📊
Film Faced Plywood
20-30 uses | 8.0 kg/m²
🛡️
Steel Formwork
100+ uses | 40-60 kg/m²
📦
Aluminum Formwork
200+ uses | 25-35 kg/m²
🪵
Timber Planks
5-10 uses | 15 kg/m²
Panel Length
1.2m × 0.6m
1.2m × 0.9m
1.2m × 1.2m
1.8m × 0.6m
1.8m × 0.9m
2.4m × 1.2m
Custom Size
Panel Width (mm)
mm
Custom Length (mm)
mm
Custom Width (mm)
mm
Formwork Material
Plywood (12mm)
Panels Needed
-- panels
For single use
Panel Area
-- m²
Each panel area
3. CONCRETE PROPERTIES
Pour Rate (m/hour)
m/h
Concrete Temp (°C)
°C
Hydrostatic Pressure
-- kPa
Max Pour Rate
-- m/h
⚠️ Warning: Pour rate exceeds recommended maximum. Consider reducing pour rate or strengthening formwork.
4. SUPPORT SYSTEM DESIGN
Joist Spacing (mm)
mm
Spacing between primary supports (joists)
Stud Spacing (mm)
mm
Spacing between secondary supports (studs)
Support Spacing (mm)
mm
Spacing between vertical supports
Recommended Joist Spacing
-- mm
Recommended Stud Spacing
-- mm
Recommended Support Spacing
-- mm
Joists (Primary Supports)
Size:
50×100mm (2×4)
50×150mm (2×6)
50×200mm (2×8)
75×150mm (3×6)
100×100mm (4×4)
150×150mm (6×6)
Custom Size
Custom (mm):
Quantity:
--
Studs (Secondary Supports)
Size:
50×100mm (2×4)
50×150mm (2×6)
50×200mm (2×8)
75×150mm (3×6)
100×100mm (4×4)
150×150mm (6×6)
Custom Size
Custom (mm):
Quantity:
--
Vertical Supports
Size:
50×200mm (2×8)
75×150mm (3×6)
100×100mm (4×4)
150×150mm (6×6)
Custom Size
Custom (mm):
Quantity:
--
Fasteners & Accessories
Nails/Screws:
-- kg
Form Ties:
--
Total Timber Volume
-- m³
All support timber
Include Formwork Accessories
Release Agent (KSh)
per liter
Form Tie Price (KSh)
each
Wedge Price (KSh)
each
Brace Price (KSh)
each
5. PRICING & COSTS
Formwork Panels
Panel Price (KSh)
per panel
Panel Deposit (KSh)
refundable
Support Timber
Joist Price/m (KSh)
Stud Price/m (KSh)
Support Price/m (KSh)
Nails & Screws (KSh)
per kg
Percentage of Materials
Fixed Price per m²
Labor Percentage (%)
Includes erection, alignment, and stripping
Labor Cost per m² (KSh)
Includes erection, alignment, and stripping
Transport Cost (KSh)
Miscellaneous Costs (KSh)
Wastage Percentage (%)
Additional materials for cutting waste and damage
Contingency Percentage (%)
Unexpected costs allowance
Calculate as Rental (instead of Purchase)
Rental Period (days)
Daily Rental Rate (%)
% of value/day
🏗️ CALCULATE FORMWORK COST