the contractor shall furnish to the engineer such receipts or other vouchers as may be necessary to prove the amounts paid and，before ordering materials，shall submit to the engineer quotations for the same for his approval．
承包人應向工程師提供必要的收據或其他憑證以證實其支出，並應在訂材料之前，向工程師提交報價單以求批准。
in respect of all work executed on a day-work basis，the contractor shall，during the continuance of such work，deliver each day to the engineer's representative an exact list in duplicate of the names，occupation and time of all workmen employed on such work and a statement，also in duplicate，showing the description and quantity of all materials and plant used thereon or therefor（other than plant which is included in the percentage addition in accordance with the schedule hereinbefore referred to)．one copy of each list and statement will，if correct， or when agreed，be signed by the engineer's representative and returned to the contractor．
所有按零工計價的工程，在工程進行期間，承包人必須每天向工程師代表提供詳細清單，一式兩份，註明此種工程雇用的所有零工的姓名、職務和工作時間，以及兩份說明書，標明用於工程的材料和設備的規格、數量（按上述細目表納入增加費用計算內的設備除外）。如清單和說明書正確無誤，工程師代表將認同且在其中一份上籤字，然後退還給承包人。
at the end of each month the contractor shall deliver to the engineer's representative a priced statement of the labor，material and plant，except as aforesaid，used and the contractor shall not be entitled to any payment unless such lists and statements have been fully andpunctually rendered．provided always that if the engineer shall consider that for any reason the sending of such lists or statements by the contractor，in accordance with the foregoing provision， was impracticable he shall nevertheless be entitled to authorize payment for such work，either as day-work，on being satisfied as to the time employed and plant and materials used on such work or at such value therefore as shall，in his opinion，be fair and reasonable．
每月底，承包人應向工程師代表提交一份所使用的勞力、材料和設備（上述規定的除外）的價目清單，如不按時提供完整的價目清單，承包人將無權得到支付。如工程師有理由認為承包人無法按上述規定提交清單，他將有權決定把此種工作或作為零工，按工時及使用的材料和設備進行支付，或按他認為公平合理的價格予以支付。
（5）the contractor shall send to the engineer's representative once in every month an account giving particulars，as full and detailed as possible，of all claims for any additional payment to which the contractor may consider himself entitled and of all extra or additional work ordered by the engineer which he has executed during the preceding month，