Infrastructure Archives

Finch West LRT Project, Toronto

RiotSpace Creative June 8, 2021

The Dewatering Vendor of Choice for Toronto LRT Projects

The success of the Eglinton Crosstown LRT (Light Rail Transit) project (also known as Line 5) in Toronto, where we have provided dewatering services to great effect on 12 of the 14 stations, has led to WJ becoming the dewatering vendor of choice for large LRT projects in the city.

Finch West Station

The Finch West Station includes a deep connection to the existing subway station and an underground track crossing – in short a deeply complex project, that will require the installation of deep wells, wellpoints and eductor wells. Fortunately these types of projects are second nature to WJ and perfectly demonstrate our creative and flexible approach to providing successful and efficient dewatering solutions that we have shown on thousands of project in Canada and elsewhere across the globe!

Humber College Station

The Humber College station, located adjacent to Highway 27 will be another opportunity to demonstrate many of the dewatering techniques that were used to great effect on the deep excavations of the Eglinton Crosstown project.

Finch West LRT

Building on the success of this project, WJ have recently begun work on the Finch West LRT project. The Finch West Project (also known as Line 6) continues the expansion of public transit services in Toronto and is expected to carry some 40,000 passengers per day by 2031. Our initial works on the project will cover the two new underground station that are due to be constructed: the new terminus at Humber College and the new interchange terminus at Finch West, where the new line will connect with the Line 2 extension to York University.

We are proud to be given the opportunity to contribute to this exciting project, and the continued expansion of public transit projects in Toronto, and look forward to its successful completion, and having the opportunity to hop on board!

LOCATION: Toronto
CLIENT: Metrolinx

Passenger Terminal Expansion Works

RiotSpace Creative June 7, 2021

The Hamad International Airport terminal expansion project will include an additional 140,000 sq.m terminal building, located airside, adjoining the existing terminal building through Concourse C with an axis that will culminate into a central garden. It will include a new transfer area which will help shorten passenger’s connection time and will improve their overall transfer experience at HIA. This will also contribute to servicing the continued growth of HIA’s national carrier Qatar Airways.

The Passenger Terminal Expansion Works, Central Concourse Building and Early Works (PTEW) was awarded to the joint venture of Midmac Contracting, TAV Tepe Akfen Investment Construction and Taisei Corporation on November 2019.

The scope of work consisted of:

Central Concourse Expansion Building and Apron Works
Diversion of existing utilities
Demolition of existing Fixed Jet Bridges
Underground Automated People Mover Station Box

Remote Underground Chilled Water network connecting Central Utility Plants

Scope of dewatering works is consist of the construction of APM Box, Cup 2 & Cup 4 connection and Central concourse (Pile caps). The APM box structure is composed of a 151.2m long by 25m wide with 2 nos. of monitoring well and 14 nos. of deepwells at the depth of 27m BGL. For Central concourse (Pile Caps) is composed of a 4m long by 4.4m wide with sump pumping technique is implemented and for CUP 2 & CUP 4 connection which is composed of 100m long by 9.4m wide consisting of sump pumping using surface suction diesel pump technique supplementary with trenching system.

The groundwater level encountered at the range of +0.39m QNHD and -1.19m QNHD at West and East of existing Concourse and the groundwater level at APM area is found in the range of -0.78m QNHD and -1.42m QNHD.

The system is supplied complete with pumps with standby units, power supply system, control panels with suitable alarm system and 24hr monitoring team.

LOCATION: Hamad International Airport, Doha, Qatar (25.2609° N, 51.6138° E)
CLIENT: Qatar Company for Airports Operation and Management (MATAR)
PROJECT MANAGER: HILL-DAR JV
MAIN CONTRACTOR: MIDMAC-TAV-TAISEI Joint Venture

Al Mohanndi Project Site

RiotSpace Creative June 7, 2021

Road Surrounding FIFA Training Site Adjacent to Golf Course (Zone-69)

WJ Groundwater is a specialist contractor for providing different types of dewatering solutions for various types of infrastructure projects including Deep Shafts, Shallow Manholes, Pipeline Trenches, Underground Tanks, etc.

The Road Surrounding FIFA Training Site Adjacent to Golf Course (Zone-69) is located Lusail, Doha, State of Qatar and it is a part of Ashghal’s Interim Road Improvement Doha South Phase -2 Project. The Works comprise the construction of temporary/permanent roads including Surface Water Drainage, Foul Sewage, TSE, ITS, Telecommunication, Protection of existing utilities, provision of future services ducts, street lighting works, traffic signals and water main dry leg crossings.

WJ Qatar was appointed by Al Mohannadi to provide stable and dry working conditions for the excavation of Shallow Manholes and Open Trench of Surface Water Drainage and Foul Sewage. WJ proposed a cost-effective Sump Pumping method for dewatering approximately 80 shallow manholes with depth varies from 3.0m to 6.0m below the existing ground level.

Since the Discharge of groundwater to the Lusail Stormwater network and also to maintain the water quality as per the Lusail requirement, we have installed Lamella Tanks with a capacity of up to 100 liters per sec to reduce the Turbidity and TSS.

Location: Lusail, Doha, Qatar
Client: Ashghal
Consultant: Gulf Engineering & Industrial Consultancy (GEC)
Main Contractor: Al-Mohannadi for Roads Trading & Contracting (MRTC)

Lusail Expressway

Neil.Coulter May 26, 2016

Lusail Expressway is one of the largest among 30 road projects to be developed as part of Qatar’s seven-year Expressway Programme.

Initiated in 2010 to connect people and places across the city of In 2010, Qatar’s seven-year Expressway Programme consists of 30 road projects, with the aim of connecting people and places across the city of Doha and wider Qatar. Nine hundred (900) kilometres of new road network involving a number of underpasses, flyovers and multi-level interchanges are expected to be delivered.

The Lusail Expressway is one of the biggest to be developed, with 5.3 km of four-lane highway in both directions, two cofferdams and three major interchanges; the Al Wahda Interchange, Onaiza Interchange, and the Pearl Interchange.

The Expressway will also have two service lanes in the multi-level interchange areas, and include a complex network of tunnels, flyovers and junctions in order to meet the future traffic demands by providing easy and speedy connectivity.

Dewatering of the project proved a challenge, as unforeseen and unexpected cavities and fissured flows were encountered, with at the peak flow in excess of 10,000 m3/hr for one of the underpasses! However, WJ rose to the challenge and dewatering was achieved with deepwell system and supplemented with sump pumping.

LOCATION: Qatar, United Arab Emirates
CLIENT: Ashghal (Qatar Public Works Authority)
CONSULTANT: CDM Smith / AECOM / KBR
MAIN CONTRACTOR: Hyundai Engineering and Construction