Feasibility Calculator
Water Demand
Family Members5
Per Capita Demand (LPCD)
Supply Duration1h 0m
Available Pressure
Measured At
Unit
Pressure Value
Connection Details
Connection Size
Flow Control Device
Feasible
Required
0 L
Supplied
0 L
Detailed Calculation and Algorithm
The feasibility is assessed by calculating the discharge from the connection using the orifice flow formula, considering the available head after accounting for elevation and residual head requirements. The total water supplied during the supply duration is compared to the required demand.
- Total Requirement: Members × Per Capita Demand.
- Effective Head: Converted Head – Subtraction Head (1m for Tap, 2.5m for Pipeline).
- Discharge (Ferrule): Standard Orifice formula Q = 0.62 × A × √(2gh).
- Discharge (PP Saddle): Specialized flow model Q = 5.914 × (h/10)^0.2427 (capped at 7 LPM).
Notes
- The integrated PP saddle regulates flow to approx 5-7 LPM irrespective of moderate pressure variation.
- On-site flow measurement is recommended prior to final sanctioning.
Developed by Manu Sharma EE PHED
RAJASTHAN STATE ENGINEERING SERVICES ASSOCIATION
New Water Connection Feasibility Assessment Report
Input Parameters
| Family Members | |
| Per Capita Demand | |
| Supply Duration | |
| Available Pressure | |
| Connection Size | |
| Flow Control Device |
Analysis Results
| Total Water Required | |
| Total Water Supplied |
Calculation Methodology
The feasibility is assessed by calculating the discharge from the connection using the orifice flow formula, considering the available head after accounting for elevation and residual head requirements. Effective head is computed by converting the selected pressure unit to meters and subtracting allowances for losses (1 m for tap, 2.5 m for pipeline). Ferrule discharge is computed using Q = 0.62 × A × √(2 g h). PP Saddle uses an empirical curve capped at 7 LPM. Total supplied volume = discharge × duration (hours). Results are compared to required household demand.
Explanation