PLANS, DKAWINGS, AND DESIGNS 121 



Electrical Engineers in their form of model general conditions. 

 (See Form IIA., Cls. 6 et seq., post.) 



3. Plans and drawings to be furnished by person tendering. 

 When contractors are invited to make tenders for work it is 

 not unusual to make provision for the drawings to be supplied 

 with the tenders in the general conditions. In the model 

 conditions published by the Institute of Electrical Engineers, 

 it is provided that the contractor must submit, within a 

 certain time, preliminary sets of drawings to be approved by 

 the engineer (see Form IIA., Cl. 11, post). The engineer 

 then signifies his approval or disapproval within fourteen 

 days. If he approves, it is further provided that within 

 fourteen days of that approval, two additional sets of draw- 

 ings, in ink on tracing-cloth, or ferrogallic prints mounted on 

 cloth, of the drawings as approved, shall be supplied to the 

 engineer by the contractor. These are signed by the engineer 

 and the contractor respectively, and are thereafter known as 

 the "contract drawings." These are not to be departed 

 from in any way except by the written order of the engineer. 

 Inasmuch as the contract drawings may have a small scale 

 which does not show sufficient detail, it is generally prudent 

 to require that " the contractor shall supply from time to 

 time such additional drawings of any details as the engineer 

 may deem necessary for the execution of the work, but the 

 contractor shall not be called upon to furnish drawings of 

 instructional details further than those which in the opinion 

 of the engineer are required for the purposes of the contract." 



4. Matters to be considered in the preparation of plans and 

 designs. When preparing designs and plans the engineer 

 must consider other matters besides the soundness of the 

 structure. His work may be objected to on various grounds. 

 It may not accord with the instructions of the employer. He 

 may have overlooked the provisions of some local by-law, or 

 he may have failed to comply with an Act of Parliament (see 

 12, post). Again, he may have overlooked the fact that his 

 work, when completed, will infringe the rights of some private 

 person with the result that a heavy liability is thrown on his 

 employer. 



5. Plans are no warranty. In preparing plans and draw- 

 ings for the guidance of the contractor, the engineer acts as 



