(a)The local officer should furnish the Executive Engineer or District Engineer or Electrical Engineer or Chief Engineer, Public Health Engineering Department with particulars of the reasons for which the work is required including the case of residential projects the accommodation of which is to be provided while the Public Works Department Officer concerned should show that his plan will generally suit the local officer's requirements. He should give particulars as to the class of work which it is proposed to provide for and show on what information his estimate of cost is based.