Kalkulator Tangga
Design stairs, calculate riser height, tread depth, stringer length, angle, and check building code compliance. 3 calculation modes with step-by-step solutions.
Menghitung
Select a calculation type, enter your measurements, and click Calculate to see stair dimensions, stringer length, and code compliance with step-by-step solutions.
Hasil
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Code Compliance
Solusi Langkah demi Langkah
Panduan Pengguna Lengkap
What is the Stair Calculator?
The Stair Calculator helps you design safe, code-compliant stairs. Enter the total rise (floor-to-floor height), and it calculates the number of risers, riser height, tread depth, total run, stringer length, and angle — all checked against building codes (IRC/IBC).
3 Calculation Modes
Design
Kenaikan total → anak tangga, tinggi anak tangga, tapak, lari, stringer.
Riser & Tread
Diberikan R, T, n → kenaikan total, lari, stringer.
stringer
Bangkit + lari → panjang stringer, sudut.
Standar Kode Bangunan
| Parameter | Jangkauan | Ideal |
|---|---|---|
| Tinggi Bangkit | 4–7.75" | 7" |
| Kedalaman Tapak | 10–14" | 11" |
| 2R + T Formula | 24–25" | 24.5" |
| Max Rise di antara pendaratan | 12 ft | — |
Terminologi Tangga
📏 Anak tangga — vertical face of the step
🦶 Tapak — horizontal surface you step on
📐 stringer — balok penyangga diagonal di bawah tangga
⬆️ Kenaikan Total — floor-to-floor vertical height
➡️ Lari Total — horizontal distance from top to bottom
Dimensi Umum
🏠 Residential: 7" riser, 11" tread (2R+T = 25)
🏢 Commercial: 6.5" riser, 12" tread (2R+T = 25)
🪜 Steep: 7.5" riser, 10" tread (2R+T = 25)
🚶 Gentle: 6" riser, 13" tread (2R+T = 25)
Catatan Penting
- All risers must be uniform height (max ⅜" variation).
- Periksa peraturan bangunan setempat — persyaratannya berbeda-beda di setiap yurisdiksi.
- Jarak bebas ruang kepala minimum: 6 kaki 8 inci (80 inci).
- Pegangan tangan diperlukan di setidaknya satu sisi untuk 4+ anak tangga.