4 of 9 Construction of Giresun Wastewater Treatment Plant VOLUME 4 – Schedules of Payments 4.1.3 Pricing  the Tenderer and do not exclude other descriptions elsewhere in the Tender Documents. The entered prices  shall be deemed to include the full scope as aforesaid, including overheads and profit.  If the Tenderer is unclear or uncertain as to the scope of any item, he shall seek clarification in accordance  with the Instructions to Tenderers prior to submitting his Tender.  As specified in the Form of Tender and the Appendix to Tender, prices shall be fixed and firm for the  duration of the Contract.  The Tenderer shall spread his general expenses, risks, profit and any other costs equally to the prices.  No  front loading is allowed under this Contract. Tender prices shall be quoted in the manner indicated and in the currency specified in the Instructions to  Tenderers.  Prices shall be written in indelible ink, and any alterations necessary due to errors etc. shall be initialled by  the Tenderer.  With reference to Volume 1, Clause 17.1, the Schedules of Payments shall also be submitted in an  electronic version on a CD.  For each item, the Tenderer shall complete each appropriate column in the respective Schedules, giving the  minimum requirements to the detailing of the lump sum and unit price as indicated in the Schedules.  Prices given in the Schedules against each item shall be for the scope covered naturally by that indicated  item as detailed in the Employer's Requirements including the appendices, Drawings or elsewhere in the  Tender Documents.  The prices entered shall be inclusive of all supply, delivery, labour, materials and plant etc. as necessary to  install the Plants and perform the works. The prices shall also include for any costs associated with on-site  storage and with site transportation to the point of erection or installation of the Plants.  The TOTAL for each Schedule shall be carried forward to Grand Summary, which shall be deemed to be  the total price for the design, construction, operation and maintenance of the Giresun WWTP and other  works included in the Contract in compliance with the Contract.  When requested by the Employer for the purposes of making payments or part payments, valuing variations  or evaluating claims, or for such other purposes as the Employer may reasonably require, the Contractor  shall provide the Employer with a breakdown of any composite or lump sum items included in the  Schedules. The prices in the Schedules shall be used by the Engineer for any price determinations.  In respect of plant and equipment priced in Schedules 6 and 7, the following payments shall be made:  Forty percent (40%) of the price stated in the corresponding Schedule item, upon delivery to site   Twenty five percent (25%) of the price stated in the corresponding Schedule item, upon installation   Ten percent (10%) of the price stated in the corresponding Schedule item, upon the Engineer’s  approval of the pre-commissioning test report.  Page 4 of 9  August 2020 d4w_finoffer_4.2_en.doc