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I worked as Senior Quantity Surveyor in Hasan Juma Backer Trading & Contracting Co. LLC since April 14, 2009 to April 25, 2010 on Water Supply Schemes to Ar Rustaq, Al Awabi, Nakhal, Wadi Al Maawil & Al Musannah Wilayats ( Tender No. 191/2005 ). This project commenced in February 2007 and original completion time was till October 2008. But this project had several problems and was granted first extension till March 12, 2009 and now final completion time is fixed as January 31, 2011. Total contract value of this project is 54.95 million Omani Riyal i.e. 142.87 million US $ ( 1Omani Riyal = 2.6 US $ approx. ). Till December 31, 2009, value of work completed is 34.60 million Omani Riyal i.e. 89.96 million US $ ( 62.96% of total contract value ).  

I had five Quantity Surveyors working under me. We worked as a team for submission of Interim Payment Application for works executed and material at site every month. In our team of six quantity surveyors three worked for preparation of measurements of civil and mechanical works, one for material at site and preparation of abstracts, one for pipeline works and another one for electrical works. I assigned works to all quantity surveyors under me and checked their work and also guided them in their work. I prepared  measurements of civil, mechanical, electrical, HVAC and instrumentation works executed and approved variations including back-up of approved and tender drawings after visiting sites and collecting data of works executed for Interim Payment Application. I , also worked out quantities of excavation in earth and rock from drawings of Original Ground Level (O.G.L.) and Finished Ground Level (F.G.L.) and preparing cross-sections of cutting and filling for complete area of different sites. I had also prepared Variation Order No. 3, in format as required by NJS Consultant. Moreover, I had also prepared some variations and cost-breakup for this project, prepared RFI for electrical materials for claiming in material at site and certified bills of works completed by sub-contractors. I,  reported  to another Senior Quantity Surveyor in Head Office.   

The works under this project will provide a piped water transmission system that will take potable water from the Barka Desalination Plant transmission network

( Al Musannah Reserviour and Barka Reserviour ). In addition, the project includes the provision of related facilities and structures.

The project has been divided as follows :

1.         West Wilayats – consisting of Al Musannah, Ar Rustaq and Al Awabi Wilayats.

            Priority 1

            These include the following Distribution Facilities Compound ( and their connecting transmission pipeline system ) :

-               Al Musannah

-               Al Hazm

-               Ar Rustaq

-               Wadi Assan

-               Al Awabi

-               Madina Al Zarqa

Priority 2

These include the following Inland Distribution Facilities Compound ( and their connecting transmission pipeline system ) :

-               Al Gharwah

-               Al Hwaqyn

-               Jamma

-               Khafdi

-               Yaqa

-               Sany

-               At Tabaqar

-               Ad Das

-               Stal

 

2.         East Wilayats – consisting of Al Maawil and Nakhal Wilayats.

Priority 1

            These include the following Distribution Facilities Compound ( and their connecting transmission pipeline system ) :

-               Barka

-               Hubra

-               Nakhal

-               Mahani

Priority 2

These include the following Inland Distribution Facilities Compound ( and their connecting transmission pipeline system ) :

-               Al Abyad

-               Al Lajal

-               At Taww

Works for Priority 1

-               Transmission Mains of 800 mm to 200 mm diameter steel and DI pipes between Distribution Facility Compounds. Total length of pipeline is approximately 116 km.

-               Facilities at the Distribution Facilities Compound

  • Pump Station
  • Chlorine Building
  • Administration and Control Centre Building including Laboratory
  • Workshop, Store and Staff Amenities Area
  • Standby Generator Building
  • Electrical Sub-Station
  • Elevated Tank(s)
  • Ground Service Reservoir
  •  Tanker Filling Station ( 6 Bays )
  • Yard Piping
  • Surge Suppression System
  • Guard House
  • Site Works
  • Access Roads

Works for Priority 2

-               Transmission Mains of 400 mm to 150 mm diameter steel and DI pipes between Inland Distribution Facility Compounds. Total length of pipeline is approximately 160 km.

-               Facilities at the Inland Distribution Facilities Compound

  • Pump Station
  • Chlorine Building
  • Standby Generator Building
  • Electrical Sub-Station or Distribution Board System
  • Elevated Tank  
  • Ground Service Reservoir
  •  Tanker Filling Station ( 2 Bays )
  • Yard Piping
  • Surge Suppression System
  • Guard House
  • Site Works
  • Access Roads

 

      Contract Value of Project : 54.95 million Omani Riyal ( 142.87 million US $ )