An-Najah National University Faculty of Engineering Civil Engineering Department COST STUDY FOR TWO BEDS TO THE SAME PROJECT (construction main transmission pipeline project for Anabta village Prepared by: Hazim Hamd-Allah Abdallah Mizyed Supervisor : E. Barraq Jumaa 2012

Hypothesis of Graduating project 2: compare between two bids for the same project: ** the first one is estimation equal to ILS, ** the second is estimation equal to ILS.

Location of the project : Anabta It’s a Palestinian city is considered one of the largest cities of Tulkarem, a town divided into two parts: **the old town which is located in the center and houses built by years, the population of the old town 2000 people, **The rest of the areas some are built from years and the other newly built during the last twenty years, and the town has a population of 7000 new people. ** The town has a population of about 9000 people (2010)

subject : project is aiming to construct of water transmission line starting from well No.3 to the tank No.1 (2100 m of 8 inch) and from this tank to Kufur Ruman tank (2300 m of 6 inch)steel pipes.

Project Overview “ pipeline Project for Anabta village/ Tulkarm “ ** The whole pipeline length for the project to be construction is about 4 km.

The activities for this project is : 1)Mobilization and Demobilization 2)Earth works 3)Supply of pipes 4)Valves and Fitting 5)Installation of pipes 6)Provisional Item

* Excavate ** Soft Backfilling For Trenches *** Final Backfilling and Reinstatement

For Pipelines: 1. Welded Steel Pipes DN Welded Steel Pipes DN150

* Supply, install and construct : COMBINED GATE VALVE and CHECK VALVE CHAMBER, Combination Air Valve Chambers, Cast In Situ Washout Manholes, Float control valve * Rehabilitation for the Existing Tanks : external paint, hand rail and external ladder

Installation and Welding of pipes and accessories along the route of pipelines, and welded joints must be wrapped by using sleeves

the PWA reserves the right for carrying additional testing for any part of the works included in the contract, during and/ or after the execution of the work.

chart diagram

Supply of pipes For bed A When Contractor A, calculated the amounts, he depended on the Israeli cost since it is cheaper and has all the specifications. And after taking the bid, it was found that the Palestinian Water Authority prefers the national industry so it was agreed on the Israeli cost between the contractor and the factory, and on the same specifications.

For bed B, When contractor B, calculated the amounts, he from the beginning depended on the Palestinian cost even though it is more expensive and has all the specifications.

Earth works For bed A the contractor want to rent all machine which he need to complete the work. For bed B the contractor have all machine which he need to complete the work ( he don’t need to rent any machine )

1) The increase in the number of the contracting corporations in the Palestinian market led to bids less than the estimated cost, since many corporations calculate the bid as to cover all their overhead expenses in order to guarantee it’s place in the market and to keep the employees working for these corporation through covering their salaries and expenses.

Thank you …