Water and Environmental Projects Terkos İkitelli Drinking Water Intake Structure and Transmission Line

Terkos İkitelli Drinking Water Intake Structure and Transmission Line

A transmission line supporting Istanbul's drinking water supply system

Terkos İkitelli Drinking Water Intake Structure and Transmission Line

Built to meet Istanbul's rapidly growing population, Terkos İkitelli Drinking Water Transmission Line is a critical drinking water infrastructure project.

The 100,624 meter line conveys raw water from Lake Terkos to İkitelli Drinking Water Treatment Plant, enabling uninterrupted drinking water for millions.

Highlights

Location

Istanbul, Lake Terkos to İkitelli Drinking Water Treatment Plant

Client/Employer

DSİ / İSKİ

Project Scale

100,624 meter, 100.6 km, transmission line

Infrastructure Components

Drinking water intake structure at Terkos
100.6 km transmission line
Pressurized pipe system and auxiliary structures

Function

A long term solution to Istanbul's drinking water needs

Key Feature

One of Istanbul's longest drinking water transmission projects

Architectural and Engineering Details

High pressure resistant steel and ductile iron pipes were used throughout.

Intermediate structures, valve chambers and connection points were built along the route.

The system was planned for treatment plant integration.

Technologies and Construction Innovations Used

Modern tunneling and horizontal drilling were used in line excavation.

Special corrosion resistant coatings extended steel pipe service life.

Pressure balancing and temporary bypass systems were installed during construction.

Special Solutions

Special crossings were developed within Istanbul's dense infrastructure.

Deep excavation and filling methods matched terrain conditions.

Phased completion avoided interruption to the existing city water network.

Project Stages and Solutions

Construction Stages

01

Construction of the Lake Terkos drinking water intake

02

Excavation and pipe laying for the 100.6 km transmission line

03

Construction of pressure balancing structures and valve chambers

04

Integration with İkitelli Drinking Water Treatment Plant

05

Testing and commissioning

Solutions

Day and night site schedules advanced work in heavily urbanized areas.

Steel pipes were welded and assembled on site and pressure tested.

Different engineering solutions were developed along the route based on ground surveys.

Sustainability

Excavation and waste materials were controlled and reused in filling.

Local procurement and labor reduced the carbon footprint.

Durable materials in steel and reinforced concrete structures created sustainable, low maintenance infrastructure.

Continuous control and inspection monitored environmental impacts during works.

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