6．1圖紙由工程師獨自保管，但須向承包人免費提供兩份副本。承包人所需的其餘副本由他自己製作並承擔費用。契約履行後，承包人須將全部契約圖紙歸還工程師。
（2）one copy of the drawings，furnished to the contractor as aforesaid，shall be kept by the contractor on the site and the same shall at all reasonable times be available for inspection and use by the engineer and the engineer's representative and by any other person authorized by the engineer in writing．
6．2承包人必須將按上述規定所提交的一份圖紙副本留在工地，讓工程師及其代表，或工程師書面授權的任何其他人在所有合理的時間內查閱使用。
（3）the contractor shall give written notice to the engineer whenever planning or progress of the works' is likely to be delayed or disrupted unless any further drawing or order，including a direction，instruction or approval，is issued by the engineer within a reasonable time．the notice shall include details of the drawing or order required and of why and by when it is required and of any delay or disruption likely to be suffered if it is late．
6．3如工程師不在適當時間內再提供圖紙或命令，包括指示、指令或認可，工程計畫或進展便可能被延誤或中斷時，承包人必須書面通知工程師。通知書中應詳細說明所需的圖紙或命令，所需原因和時間，以及如果不及時提供而可能造成的任何延誤和中斷。
（4）if，by reason of any failure or inability of the engineer to issue within a time reasonable in all the circumstances any drawing or order requested by the contractor in accordance with subclause（3）of this clause，the contractor suffers delay and/or incurs costs then the engineer shall take such delay into account in determining any extension of time to which the contractor is entitled under clause 44 hereof and the contractor shall be paid the amount of such cost as shall be reasonable．
6．4如承包人按本條第3款規定索要圖紙或命令，由於工程師沒有或不能在合理時間內
提供，從而導致承包人誤工和左戊承擔費用，工程師必須考慮此種延誤，以決定是否按本契約第44條規定延長承包人的工期，且只要有理由，承包人所承擔的此種費用必須得到補償。
7．the engineer shall have full power and authority to supply to the contractor from time to time, during the progress of the works，such further drawings and instructions as shall be necessary for the purpose of the proper and adequate execution and maintenance of the works． the contractor shall carry out and be bound by the same．