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Reliable Systems.
Resilient Cities.

UAE · Saudi Arabia · Qatar · India

Water SupplyRecycled WaterWastewaterStormwaterFirefighting1D / 2D ModellingRising Main Surge AnalysisDesign NOCTender + Bid Evaluation
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Animated city utility systems showing potable water, sewerage, stormwater, recycled water and firefighting flows
Current project · Detailed design · KSAAl Ha’er recycled-water transmission network

Transient surge analysis for a 20 km, DN 2200 carbon-steel main, including five critical operating scenarios.

Engineering partner: WABAGEnd client: NWC
Core expertiseIntegrated water-infrastructure engineering

Water supply · Recycled water · Wastewater · Stormwater · Firefighting · Rising main surge analysis · 1D/2D flood modelling · Utility clash analysis · Design NOC · BOQ and specifications · Bid evaluation (technical and commercial) · Tender support

Engineering scope

How each system
is designed.

Critical checks, engineering decisions and deliverables—presented clearly.

Potable-water pumping, trunk-main and distribution-network designRecycled-water network supplying tertiary landscape irrigationPotable + recycled water
01 / Pressurised networks

Potable, recycled & plant water

A reliable network that delivers the required flow and pressure at every critical node.

DiameterMaterialVelocityPressureFire flow
  • ADD, MDD, peak-hour, fire-flow and future-demand scenarios
  • Diameter selection from velocity, headloss, pressure and resilience checks
  • Minimum and maximum pressure verification to the applicable authority criteria
  • DI, HDPE, carbon steel or GRP selection by pressure, diameter, soil and corrosion risk
  • Pumps, tanks, pressure zones, PRVs, isolation and air-valve locations
Engineering outputs

Design basis · calibrated hydraulic model · HGL · pressure and velocity maps · pump and storage schedules · network plans/profiles · valve and chamber details · BOQ and specifications.

Wastewater collection from buildings through gravity sewers and a rising main to the treatment plantWastewater
02 / Gravity + rising mains

Sewerage & wastewater

Gravity and pumped systems sized for present loading, future growth and operational reliability.

Peak flowSloped/DVelocityHGL
  • Population, land-use, sewage-return, infiltration and inflow assessment
  • Average and peak flow using Babbitt, Harmon or authority factors
  • Diameter and gradient selection using d/D, capacity and minimum self-cleansing criteria
  • Maximum velocity, Froude number, surcharge, cover and hydraulic-grade checks
  • Manholes, drops, pump stations, wet wells and rising-main duty points
Engineering outputs

Flow schedule · hydraulic model · longitudinal sections · HGL and surcharge review · manhole schedules · pump duty · rising-main calculations · drawings, BOQ and specifications.

Hydraulic profile for stormwater and flood modelling1D / 2D flood modelling
03 / Rainfall + runoff

Stormwater drainage & flood

Catchment-led design that manages underground capacity and surface flood risk together.

RationalSCS-CN1D2DFlood depth
  • Catchment boundaries, imperviousness, runoff coefficients and time of concentration
  • IDF rainfall, return period, temporal profile and climate allowance
  • Rational Method or dynamic SCS-CN rainfall-runoff modelling
  • Inlet, pipe, channel, culvert, manhole, outfall and HGL capacity checks
  • 2D flood depth, velocity, hazard and exceedance-flow-path assessment
Engineering outputs

Catchment plan · hydrology calculations · 1D/2D model · network schedule · flood maps · HGL profiles · critical-location register · drainage layouts and profiles.

Stormwater gullies, main drainage network and underground attenuation storage with controlled dischargeAttenuation storage
04 / Storage + controlled discharge

Attenuation tank design

Storage sized to hold the critical storm and release water within the permitted outfall rate.

VolumeRoutingFreeboardOutflow control
  • Allowable discharge, receiving-system level and tailwater confirmation
  • Inflow hydrograph and critical-duration storm assessment
  • Storage routing, required volume, operating level and freeboard
  • Orifice, weir, vortex control or pumped-discharge selection
  • Emergency overflow, access, ventilation, silt management and maintenance needs
Engineering outputs

Storage curve · inflow/outflow hydrographs · tank sizing · control-structure calculations · pump duty where required · GA, sections, MEP interfaces, BOQ and specification.

Transient pressure wave, surge vessel and high-point air valve protecting a large-diameter rising mainWater-hammer pressure wave inside a large-diameter pipeline with surge-protection equipmentWater Hammer & Surge Protection
05 / Transient hydraulics

Surge analysis for rising mains

Transient protection for water, wastewater and stormwater pressure mains from DN 500 to DN 3000+.

Pump tripValve closureAir valveSurge vessel
  • Steady-state model, pump curves, operating levels and boundary validation
  • Power failure, pump trip/start, valve closure and emergency operating cases
  • Wave speed, pipe elasticity, pump inertia and control-valve characteristics
  • Maximum pressure, minimum pressure, vapour risk and transient envelope checks
  • Air/vacuum valves, surge vessels, flywheels, NRVs and control-logic optimization
Engineering outputs

Transient model · worst-case envelope · node time histories · protection-option comparison · air-valve schedule · surge-vessel sizing · operating recommendations and report.

BIM utility coordination and clash-detection modelUtility coordination
06 / Corridors + approvals

Utility corridors, clashes & NOC

Buildable wet-utility corridors coordinated with roads, structures and dry utilities.

RTAUCDMClearancesClash matrixNOC
  • Horizontal and vertical corridor planning to local authority requirements
  • Cover, separation, crossing, access and protection-detail checks
  • Integrated 3D/BIM model coordination across wet and dry utilities
  • Clash detection, issue register, ownership and resolved levels
  • Design NOC and construction NOC drawings with comment resolution
Engineering outputs

Coordinated plan/profile · corridor cross-sections · clash report · utility matrix · crossing and protection details · authority submission drawings · response-to-comments register.

Utility infrastructure construction and site coordinationDesign to construction
07 / Complete delivery support

Detailed design, cost, tender & construction

A coordinated package that carries the engineering basis into procurement and site delivery.

DrawingsCostBOQSpecificationsBid evaluation
  • Design reports, calculations, plans, profiles, schedules and standard details
  • Concept and pre-tender estimates, value engineering and risk allowances
  • Measured BOQ, material/workmanship specifications and equipment schedules
  • Bidder queries, addenda, compliance matrix and technical/commercial evaluation
  • RFIs, shop drawings, materials, site changes, testing and as-built support
Engineering outputs

Issue-ready design package · engineer’s estimate · BOQ · technical specifications · tender clarifications · evaluation report · construction-support and close-out records.

Current detailed-design assignment · KSA

Al Ha’er
recycled-water network.

Detailed design · In progress

Transient surge analysis

Surge assessment for a 20 km, DN 2200 carbon-steel recycled-water transmission network in Saudi Arabia.

20 kmNetwork length
DN 2200Pipe diameter
CSCarbon steel
Transient scenarios
01Single pump failure
02All pumps trip
03Controlled pump shutdown
04Pump start-up
05Sudden valve closure
Transient envelopeAir-valve assessmentSurge-vessel assessmentDetailed-design recommendations
WABAGEngineering partner
NWCEnd client · KSA

Selected project evidence

Recent
work.

Complex hydraulics, flood modelling and bid-stage engineering.

Saudi Arabia

Al Hadda · Al Arana · Riyadh East

Pressurised-system design and transient surge analysis supporting competitive bid submissions.

WABAGEnd client: NWC
Odisha, India

Jharsuguda Railway Yard

Catchment assessment, integrated 1D / 2D modelling and stormwater-network design.

Flood + drainageIndian Railways
West Bengal, India

Habra Municipality

Municipal catchment planning and stormwater drainage design.

Urban drainageClient: KMDA
West Bengal, India

Gobardanga Municipality

Municipal stormwater assessment and drainage-network design.

Urban drainageClient: KMDA
WABAGWater technology partner
NWCSaudi end client
Indian RailwaysPublic infrastructure
KMDAWest Bengal urban development

Typical programme

Fast, staged
delivery.

Final dates follow scope, data availability and authority route.

3–6 weeks

Master plan

Baseline · demand · constraints · options

4–6 weeks

Concept

Design basis · model · corridors · cost

6–10 weeks

Preliminary

Hydraulics · profiles · crossings · risk

10–18 weeks

Detailed

Models · drawings · BOQ · specifications

4–12+ weeks*

Design NOC

Submission · comments · coordination

3–6 weeks

Tender

Queries · addenda · bid evaluation

2–6 weeks*

Construction NOC

Interfaces · applications · approvals

Project duration

Site support

RFIs · shop drawings · testing · close-out

*Authority review periods are outside the consultant’s direct control.

Regional + digital readiness

Designed for
local approval.

Dubai Municipality WSARTA ROW / NOCAbu Dhabi USDM / UCDMNWC / KSA requirementsAshghal QSDDMKAHRAMAACPHEEOJal Jeevan Mission
Digital delivery approach

Our specialists are experienced across leading hydraulic, transient, flood and BIM platforms. For each assignment, the appropriate client-approved software is selected to match the scope and delivery requirements.

Project brief ready?

Let’s solve the
hydraulics.

proposals@cpconsultancy.co.in ↗