Sealed bidding is a method of contracting that employs competitive bids, public opening of bids, and awards. Each sealed bid includes technical specifications, delivery or completion dates, place and method of delivery, nature and number of reports or manuals which may be required, operational tests and instructions, and other items which should be considered in submitting a bid. The terms and conditions are set forth in detail as are the date, hour, and place where bids will be publicly opened and recorded. Contract clauses are generally incorporated by reference. Unless specifically authorized, a telegraphic or alternate bid will not be considered.