How to bid on a Services, Supplies, and Equipment contract. File a contracting disclosure form.Register for an account with PHLContracts. 02 - Construction Bid Proposal. The Bidder shall also examine the proposed Contract Documents, including the plans, specifications, the General. Philadelphia in awarding the contract or contracts for which we have submitted our Proposal. A. The Instructions to Bidders document is attached following this page. Sealed bidding is a method of contracting that employs competitive bids, public opening of bids, and awards.