Knowledge Base

Practical guides for the engineers who build and maintain India's public works.

Clear, field-tested explanations of the procedures and designs you use every day — from maintaining a Measurement Book correctly to forecasting demand, running hydraulics and reading a running account bill. Written for civil and rural water supply engineers, free to read.

Works Procedure

How to Maintain a Measurement Book (M-Book) Correctly

The Measurement Book is the single most important field record behind every running bill. Here is how to record, correct and safeguard it so it never fails an audit.

8 min readRead
RWS&S Design

SVS vs MVS Water Supply Schemes Explained

Single Village and Multi Village Schemes solve the same problem at very different scales. Knowing which to design, and why, shapes every downstream decision.

9 min readRead
Field Reporting

Tour & Inspection Diary: Best Practices for Field Engineers

A tour diary is only as useful as the detail you capture on the spot. These habits turn a routine visit into a defensible, searchable record.

7 min readRead
Finance & Grants

Fund Utilisation & Expenditure Reporting in Public Works

Clean expenditure reporting is simply the discipline of always knowing three numbers for every work: sanctioned, spent and balance. Here is how to keep them honest.

8 min readRead
RWS&S Design

Hydraulic Design Basics: HGL, Residual Head & Pipe Class

Every pipe network design comes down to one promise: enough pressure, everywhere, without over-stressing the pipe. These are the ideas that keep that promise.

10 min readRead
RWS&S Design

OHSR Capacity & Population Forecasting for Rural Water Supply

Reservoir sizing starts long before the structure: it starts with an honest forecast of how many people the scheme must serve, and how much water each will need.

9 min readRead
Finance & Grants

Understanding Running Account Bills and Statutory Deductions

A running bill looks intimidating until you see it as a simple build-up: value of work, taxes added, then a stack of recoveries, ending in one net figure.

9 min readRead
Scheme Design

Selecting Pipe Material for Water Supply: DI, PVC, GI and HDPE

The right pipe is the one that matches the pressure, the soil and the way it will be laid. Here is how DI, PVC, GI and HDPE actually compare in a rural water supply scheme.

9 min readRead
Scheme Design

Population Forecasting Methods for Water Demand

The design population sets the size of the whole scheme. Here is how the standard forecasting methods differ and how to pick the one that fits your settlement.

8 min readRead
Scheme Design

Pump Selection for Water Supply: Head, Discharge and Power

A pump is chosen by two numbers — the flow it must deliver and the head it must deliver it against. Get both right and the rest, including power and efficiency, follows.

9 min readRead
Scheme Design

Designing Service Reservoir Capacity: Balancing, Breakdown and Fire

A service reservoir does three jobs at once — it balances supply against demand, holds a reserve against breakdown, and keeps water for firefighting. Sizing it means adding these up sensibly.

8 min readRead
Estimation

Preparing an Estimate Using SSR, Leads and Lifts

A sound estimate is quantities multiplied by the right rates, with leads and lifts honestly accounted. Here is how to build one that sanctions cleanly and survives audit.

8 min readRead
Works Procedure

Measuring Earthwork and Excavation for Pipelines

Earthwork is the item most often over-measured and most often questioned. Measuring to authorised dimensions, with soil classified honestly, is what keeps it clean.

7 min readRead
Quality Control

Water Quality Standards and Testing for Rural Supply

Delivering water is only half the job; delivering safe water is the other half. Here is what to test, how to sample, and what to do when a result fails.

8 min readRead
Scheme Design

Valves in a Water Supply Network: Sluice, Air, Scour and Non-Return

A pipeline is only as operable as its valves. Put sluice, air, scour and non-return valves in the right places and the network can be isolated, de-aired, flushed and protected; leave them out and it cannot.

8 min readRead
Quality Control

Disinfection and Chlorination of Rural Water Supply

Delivering water and delivering safe water are two different jobs. Chlorination is the simple, proven step that closes the gap — if the dose, the contact time and the residual are right.

8 min readRead
Scheme Design

Water Hammer and Surge Protection in Pumping Mains

The most violent pressure a pumping main ever sees is not at steady flow but in the instant a pump trips. Understanding water hammer is what stops a main bursting at its weakest joint.

8 min readRead
Operations & Maintenance

Reducing Non-Revenue Water: Leak Detection and Control

Water lost between the source and the tap is water pumped, treated and paid for but never delivered. Finding and cutting those losses is often cheaper than developing a new source.

7 min readRead
RWS&S Design

Designing an In-Village Distribution Network Layout

The layout of the distribution network decides how fairly and reliably water reaches every household. Here is how to plan it around the village, not against it.

9 min readRead
RWS&S Design

Rising Main and Transmission Main Design

The rising main carries the whole scheme's water and the whole pumping bill. Sizing it is a balance between the cost of pipe and the cost of the energy to push water through it.

8 min readRead
Operations & Maintenance

Rainwater Harvesting and Source Sustainability in Rural Schemes

A scheme is only as reliable as its source. Rainwater harvesting and recharge are what keep a borewell yielding through the dry months and the dry years.

7 min readRead
Works Procedure

Commissioning and Handover of a Water Supply Scheme

The gap between "construction complete" and "water reliably flowing" is commissioning. Do it properly and the scheme runs; skip it and the complaints start on day one.

8 min readRead

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