Water Demand → Tank Capacity Sizing

Preliminary storage sizing using population demand, storage duration, and optional fire reserve. (UGT/OHT split is for planning.)

Load sample

Tip: Samples help you understand the typical inputs quickly.

Population / Users (No.)

Per capita demand (L/person/day)

Allowance / Losses (%)

Adds margin for losses, wastage, future growth (planning).

Storage duration (hours)

24h = 1 day storage; 12h = half-day storage, etc.

Fire reserve (m³) (optional)

OHT share of domestic storage (%)

Domestic storage is split: OHT + UGT. Fire reserve is kept separate.

Round up to (m³)

Example: 1 m³ (fine), 5 m³ (practical), 10 m³ (large tanks).

Note: This tool sizes storage volume only (planning). Structural design, detailing, and hydraulic checks should be done separately.

Ready

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Enter inputs to compute tank capacities.

Base daily demand	—
Design daily demand (incl. allowance)	—
Domestic storage for selected hours	—
Fire reserve	—
Total storage required	—
Suggested OHT capacity	—
Suggested UGT capacity	—

OHT UGT Fire

Chart shows domestic split (OHT + UGT) and fire reserve.