Gandharbpur water treatment plant: intake and raw water pipeline works

Ongoing and completed

A programme of marine, geotechnical and steel works for SUEZ OTV Veolia at the 500 MLD Gandharbpur plant: sheet piled cofferdams and pipe piles at the river intake, plus shore protection and DI pipe installation along the raw water pipeline.

Project facts

Client: SUEZ OTV Veolia
Location: Intake and raw water pipeline, Gandharbpur, Araihazar, Narayanganj
Contract value: BDT 851.2 M
Status: Ongoing and completed

Sum of 48 SUEZ OTV Veolia contracts priced in BDT across the ongoing and completed tables (50 contracts in total; two diesel storage tank contracts were priced in USD, 151,526 combined).

Scope

Fabrication and installation of 39 m sheet piles at the intake, the largest single contract at BDT 109.76 M
Temporary shore protection with sheet piles along the raw water pipeline at River Crossing 7 (BDT 55.85 M), the 400 m reach at CH 17+350 to 18+410 (BDT 95.77 M) and the 600 m ponds at PK 17 to PK 18 (BDT 95.26 M), including extraction
Pipe pile fabrication and driving with interior and exterior rings and stiffeners at I10, I15 and I20, and installation of 57 ring sets (BDT 42.01 M)
Strut and H-beam braced walling for the I-10 cofferdam, from supply to fabrication, erection and extraction
DI pipe installation in braced trenches, and 2,200 mm CS pipe lines welded to an ASME Section IX WPS with RT and DPT inspection and heat shrink sleeves with holiday testing
River erosion protection at the intake with FLXMAT mattress placement (AXL300, DM150 and LB300)
MS diesel storage tanks of 60,000 L and 100,000 L built to BS 799 Part 5 with MPT, DPT, hydrostatic and ultrasonic thickness testing, plus an 8 x 20 x 1.5 m pontoon and a 65 m steel gangway to BNBC Part 6 and ISO 12944 painting