Try the calculator
First-pass estimate — confirm final quantities against your engineer's design.
Capacity
3600litres
Daily household demand
675litres
RCC concrete (walls + base)
1.71m³
Steel (approx)
137kg
Live estimate · Prices indicative for Guna district (2026)
Key points
- Daily demand ≈ 135 L per person (BIS residential).
- Wall thickness assumed 150 mm; base 150 mm.
Formula & how it works
Capacity = L × W × D (in m³) × 1000.
Daily demand = persons × 135 L (BIS residential norm).
Worked example
- 2 × 1.5 × 1.2 m tank ≈ 3,600 L (fits ~5 persons × 5 days).
Expert tips & mistakes to avoid
- Always add a 5–7% wastage buffer — mid-slab shortages cost more than the buffer bags.
- For engineered members (RCC columns/beams), follow the structural drawing over any calculator.
- Order cement in tranches — bags older than 90 days lose strength.
- Confirm the current market rate on WhatsApp before finalising the budget — prices printed here are indicative only.
Frequently asked questions
Overhead or underground?
+
Underground for storage capacity, overhead for pressure. Most homes use both — sump + overhead tank.
Ready to order?
Send us the calculator results — we'll confirm today's rate for cement, TMT and delivery within 30 minutes during shop hours.