civil engineer

1. INFRASTRUCTURE PROJECTS
OCTOBER 2009
Prepared By: Sura Al Shami
WET UTILITIES DESIGN WORK
STAGES
HIP – Sharjah / Water & Power
Business Group

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CONTENTS
• Brief Introduction
• Stages of the Design Work
• Open Discussion and Questions

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INTRODUCTION
• Infrastructure development projects refer to development
of new or upgrading the existing development projects
comprising of one or more of the land use types like
residential, commercial, recreational and industrial etc.

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Airport Plot Development – Abu Dhabi

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Land Development
Survey & Investigation
Master Planning
Grading Plans &
Earth Work Design
Roads Design
Design of Utilities
Dry Utilities
Wet Utilities
Power Telecom Street Lighting
Water Supply Foul Drainage Storm Water Irrigation Fire Fighting

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Master Planning Support & Data Collection
Concept Design
Preliminary Design
Detail Design
Tender
Construction, Supervision, Commissioning
and Handing over (not covered)
Review & Approval from
Client and related
Authorities
Infrastructure development project comprise of the following stages

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STAGE 1: Master Planning Support and Data Collection
• Collection and review of all the available data including topographic
maps, geological maps, existing land use, climatic data and existing
utilities etc.
• Preparation of existing utilities inventory including (data collection,
review and site appraisal, utility authority liaison - RFI’s)
• Assessment for the condition and loads on the existing facilities and
identify requirements for upgrade, diversion, protection…etc
• Demands assessment for the new development under consideration.
• Preparation and submission of an Inception Report for client review
and approval

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Survey Data

9. Land Use Layout
Infrastructure Project – Wet Utilities Work

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Land Use Summery Tables

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Existing Irrigation System from Agriculture Dept

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STAGE 2: Concept Design
• Development of design strategy and options.
• Evaluation of alternatives and cost estimate analysis.
• Setting up the Utilities Design Standards and Criteria.
• Fixing of the utility corridors for different ROWs of roads as per the
services authorities requirements.
• Preparation of utilities concept design drawings including the
preliminary size and locations of the primary infrastructure
(reservoirs, pumping stations, RO and STP plants, sub stations etc)
and concept network layouts
• Preparation and submission of Concept Design Report

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Utilities Corridors

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Concept Layout for SW Network

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STAGE 3: Preliminary Design
• Firming up the systems layout plans.
• Hydraulic design and sizing of systems (usually by means computer
programs for hydraulic design and analysis).
• Preliminary civil, M&E and structural design of primary structures like
reservoirs, pumping stations etc and setting up the design parameters
for RO plants and STP.
• Preparation of preliminary drawings (Layouts and Details)
• Quantity survey and preliminary cost estimates.
• Preparation of Preliminary Design Report

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Preliminary Layout for Foul Network

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STAGE 4: Detail Design
• Finalization of the layout in exact corridor
• Conflict resolution with other services
• Final hydraulic design and systems sizing
• Preparation of manhole schedules and profiles
• Detailed civil, M&E and structural designs for LS, PS, tanks and
Reservoir.
• Preparation of final detailed drawings
• Preparation of a Detailed Design Report

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Manhole Schedule

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Longitude Profile

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STAGE 5: Tender
• Quantity surveys and preparation of Bill of Quantities.
• Preparation of technical specifications.
• Specialty equipments or items, such as packaged STP or RO plants
• Preparation of Tender Documents.
• Invitation for Tenders

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BOQs Example

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Invitation to Tenderers Example

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Open Discussion and Questions