🪟 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
Kalkulator Terkait
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.
📖 Cara Menggunakan Kalkulator Bekisting
Ukur area permukaan beton.
Pilih jenis bekisting.
Masukkan faktor penggunaan ulang.
Masukkan biaya material per unit.
Klik Hitung.
Tinjau rincian biaya.
📐 Rumus Material Bekisting
⚠️ Kesalahan Umum
Meremehkan jumlah lembar.
Tidak memperhitungkan potongan.
Jarak penyangga salah.
Mengabaikan berat beton.
Mengabaikan waktu pembongkaran.
💡 Tips Profesional
Gunakan triplek film berkualitas tinggi.
Pastikan penyangga memadai.
Hitung tekanan beton.
Rencanakan urutan pembongkaran.
Oleskan oli bekisting secara merata.
Periksa semua komponen.
Simpan triplek dengan baik.
❓ Pertanyaan yang Sering Diajukan
Tergantung kualitas. Standar 5-8 kali. Kualitas tinggi 15-25 kali.
Umumnya 12, 15, dan 18 mm. Untuk dinding 15-18 mm.
Bagi area lantai dengan jarak penyangga.
Tergantung desain. Biasanya 2-4 meter per jam.
Tergantung kekuatan. Dinding 12-24 jam. Lantai 7-14 hari.
🏗️ Aplikasi Dunia Nyata
Gunakan kalkulator bekisting kami untuk memperkirakan material dan biaya proyek beton Anda.
✅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.