🪟 Shuttering / Formwork Calculator PRO
Shuttering area, plywood sheets, release oil, labour & material cost for slab, beam, column & staircase.
Formwork Panel — updates as you type
Member faces with walers. Plywood follows the contact area divided by sheet size.
1 Member Type
2 Member Dimensions
3 Material & Labour Rates
Results
Shuttering Area
Materials
Cost Breakdown
Professional Shuttering Guide
Show formulas, plywood specs & tips ▼
Area Formulas
Slab:Area = L × W (contact area with concrete bottom face)
Beam:Area = 2 × (W + D) × L (bottom + 2 sides)
Column:Area = 2 × (W + D) × L (all 4 faces, L = height)
Staircase:Area = L × W + 2 × (W + D) × L (slab bottom + waist + sides)
Plywood Specifications
| Size | Area | Reuses |
|---|---|---|
| 4 × 8 ft | 32 sq ft | 8-12 |
| 4 × 10 ft | 40 sq ft | 8-12 |
Release Agent Guidelines
- Apply 1 coat before each pour for clean stripping
- Coverage: 40-60 sq ft/L depending on plywood condition
- Used oil is cheaper but may stain concrete — use proper form oil
- Budget 10-15% extra for waste and re-coating
Common Mistakes
- Not allowing for plywood reuses — proper oil extends life significantly
- Ignoring bracing requirements — inadequate support causes blowouts
- Using wrong plywood grade — BWR/BS grade for wet concrete contact
- Skipping edge sealing — raw plywood edges absorb water and swell
- Not factoring waste — always add 10-15% for cuts and damaged sheets
Drag to rotate — Scroll to zoom
相关计算器
Frequently used together on the same project.
Client & Quote (prints on PDF & Excel)
Adjustments (applies to exports)
Contingency is added as a separate line on the exported cost summary. Waste % is printed as an advisory reminder.
Project notes (prints on PDF & Excel)
Result compare (A/B)
| Item | Pinned | Current | Change |
|---|---|---|---|
Saved rates auto-apply from your Price Library. Advanced details stay in your browser — nothing is uploaded except inside your own PDF/Excel exports.
📖 如何使用模板计算器
以平方米为单位测量要支模的混凝土表面积。
选择模板类型。
输入重复使用系数。
输入每单位材料成本。
点击计算获取材料数量和成本估算。
查看详细明细。
📐 模板材料公式
⚠️ 常见模板计算错误
由于不正确的重复使用系数而低估胶合板数量。
未考虑边缘和角落的切割废料。
使用不正确的支撑间距。
忽略湿混凝土的重量。
未考虑拆模时间。
💡 专业模板技巧
使用高质量覆膜胶合板以获得光滑的混凝土表面和最大重复使用次数。
确保足够的支撑和拉杆以防止混凝土压力下的模板爆裂。
根据浇筑速度计算墙体模板上的混凝土压力。
仔细规划拆模顺序。
在胶合板表面均匀涂刷脱模剂。
每次使用前检查所有模板组件。
储存期间保持胶合板平整干燥。
❓ 模板常见问题
重复使用次数取决于胶合板质量和保养。标准胶合板可重复使用5至8次。高质量覆膜胶合板可重复使用15至25次或更多。
常见厚度为12mm、15mm和18mm。墙体和柱通常使用15mm至18mm。楼板可使用12mm至15mm。
将楼板面积除以支撑间距面积。1.2m间距时，每个支撑覆盖1.44平方米。100平方米楼板需要约70个支撑。
浇筑速度取决于模板设计。典型墙体模板可处理每小时2至4米的浇筑速度。
拆模时间取决于混凝土强度、温度和结构要求。墙体通常需要12至24小时，楼板需要7至14天。
🏗️ 实际模板应用
使用我们的模板计算器准确估算混凝土施工项目的模板材料、胶合板数量和成本。
✅Method, Sources & Review
Maintained by theBuildingCalc methods desk· Last reviewedSeptember 23, 2026. This calculator implements the standards and references below; every figure can be rechecked against the formulas and worked example on this page.
Results are estimates, not engineering advice. Verify against local codes and licensed professionals for structural, electrical, and gas work. See ourTerms. Spotted an error? Report it— corrections ship with the next review.