Infrastructure Glossary — 50+ Terms

A central scheme providing funding for water supply, sewerage, stormwater drainage, and urban transport projects in 500+ Indian cities.

India's largest highway development programme targeting 65,000+ km of economic corridors, border roads, coastal roads, and expressways with an investment of ₹10.63 lakh crore.

Similar to BOT but the private entity holds legal ownership of the asset during the concession period before transferring it to the government.

An itemised list of materials, parts, and labour with quantities required to construct a project. BOQ is the basis for tendering in item-rate contracts.

A PPP model where a private company builds infrastructure, operates it for a concession period to recover costs and earn returns, then transfers ownership to the government.

A shared treatment facility serving multiple small-scale industries in an industrial estate, reducing individual treatment costs while ensuring environmental compliance.

The statutory body that sets environmental standards, monitors pollution, and regulates industrial discharge norms across India.

The primary construction agency of the Government of India for public-sector buildings, embassies, and central government infrastructure.

Standard unit of volume measurement in construction for earthwork, concrete, masonry, and aggregate quantities. 1 cum = 1,000 litres.

A procurement model where the contractor designs, builds, and arranges project financing. The government repays the contractor over time through scheduled payments.

A PSU building India's two dedicated freight corridors — Eastern (1,337 km) and Western (1,504 km) — to decongest the rail network.

A high-strength, corrosion-resistant pipe used for high-pressure water transmission mains. DI pipes combine the strength of steel with the corrosion resistance of cast iron.

A comprehensive document covering technical feasibility, design, cost estimation, environmental impact, and implementation plan for an infrastructure project.

A structured-wall HDPE pipe with a smooth inner bore and corrugated outer wall, used in underground sewerage and stormwater drainage networks.

A turnkey contract model where the contractor handles design, material procurement, and construction under a single fixed-price agreement. The client receives a fully operational facility.

An overhead water storage tank built at height to provide gravity-based water distribution to households through the piping network.

A facility that treats industrial wastewater containing chemicals, heavy metals, or process-specific pollutants to meet CPCB/SPCB discharge norms.

Steel pipe coated with a zinc layer for corrosion protection. Used in water supply distribution networks, especially for smaller diameters in urban areas.

A ground-level water storage structure that receives treated water from WTP and feeds it to ESRs or directly to the distribution network via pumping.

Gujarat's state pollution control body that enforces environmental regulations, issues consent-to-operate for industries, and monitors effluent discharge.

The state agency responsible for planning, designing, and executing water supply and sewerage schemes across Gujarat.

A highway funding model introduced by NHAI where the government pays 40% during construction and 60% as semi-annual annuity payments over 15 years after completion.

A thermoplastic pipe material widely used in water supply and sewerage networks for its corrosion resistance, flexibility, and leak-proof fusion-welded joints.

CII's council that rates and certifies green buildings in India across categories — Platinum, Gold, Silver, and Certified — based on energy, water, and environmental performance.

The apex technical body that publishes codes, standards, and specifications for road and bridge design, construction, and maintenance in India.

A central government programme to provide functional household tap connections (FHTC) to every rural household in India by 2024, driving massive water supply infrastructure development.

A fixed-price contract where the contractor delivers a complete, operational facility for an agreed lump sum amount, bearing all cost-overrun risk.

The mechanical and electrical works in a construction project, including pumps, motors, HVAC, electrical panels, cabling, and instrumentation.

A wastewater treatment technology using thousands of polyethylene carrier elements for biofilm growth, offering high treatment efficiency in a compact footprint.

The standard unit measuring the capacity of water and wastewater treatment plants in India. A 50 MLD STP can treat 50 million litres of sewage daily.

The central ministry responsible for formulating and administering policies for road transport, national highways, and transport research.

The state agency responsible for developing industrial areas, growth centres, and integrated industrial parks in Madhya Pradesh.

A state PSU that develops and maintains state highways, major district roads, and expressways in Madhya Pradesh.

Carbon steel pipe used for large-diameter water transmission mains and rising mains where high-pressure capacity is required.

Unit of mass (1,000 kg) used to measure steel reinforcement, structural steel, bitumen, cement, and aggregate quantities in construction projects.

India's comprehensive building code (published by BIS) covering structural design, fire safety, plumbing, electrical, and sustainability requirements for all building types.

A specialised judicial body that handles environmental disputes and enforces environmental laws, including mandating STP/ETP compliance for industries and municipalities.

The nodal agency under MoRTH responsible for development, maintenance, and management of National Highways across India.

A steel-framed structure designed and fabricated in a factory, then assembled on site. PEB offers faster construction, wider spans, and lower cost for industrial and warehouse buildings.

A cooperative arrangement between government and private sector for financing, building, and operating public infrastructure projects.

High-strength concrete (M40 grade or above) used for rigid road pavements on highways and expressways, offering 30+ year design life with minimal maintenance.

State-level government department responsible for construction and maintenance of roads, bridges, government buildings, and public infrastructure.

Interim payment bills submitted by the contractor to the client at regular intervals based on work completed, measured against BOQ rates.

Concrete embedded with steel reinforcement bars (rebar) to provide tensile strength. RCC is the primary structural material for buildings, bridges, dams, and retaining walls.

Linear measurement unit used for pipelines, kerb stones, fencing, cable laying, and similar linear construction items.

A PSU under the Ministry of Railways that executes railway infrastructure projects including new lines, gauge conversion, doubling, and electrification.

A port-led development programme focused on port modernisation, coastal connectivity, port-linked industrialisation, and inland waterway development.

A fill-and-draw activated sludge system that performs equalisation, biological treatment, and clarification in a single tank through timed cycles.

Standard unit of area measurement used for plastering, painting, flooring, formwork, and surface treatment quantities in construction.

A facility that treats domestic wastewater using biological, chemical, and physical processes before safe discharge into water bodies or reuse for irrigation.

An anaerobic wastewater treatment reactor where wastewater flows upward through a sludge blanket, generating biogas while treating high-strength organic effluent.

A facility that processes raw water from rivers, lakes, or groundwater through filtration, sedimentation, and chlorination to make it safe for drinking or industrial use.

A treatment process that recovers virtually all water from wastewater for reuse, leaving only solid residue for disposal. Mandatory for many pharma and textile plants in India.