A plan has been suggested whereby architects and contractors involved with the design and production of architectural concrete could eliminate a good deal of the uncertainty about final appearance and costs and could save themselves a great deal of time in arriving at a decision as to what finish is to be elected for a given project. Essentially the plan suggests that architects, contractors and suppliers of concrete materials of any given metropolitan region cooperate in setting up a series of exhibit panels in a convenient outdoor location. Each panel would be designed to show a creative combination of texture, scale, color and design feeling. Records could be kept for each panel- the materials and methods required , costs, and manhours of labor needed for the tasks critical to production of a particular effect. With a series of permanent samples available to serve as visible examples of many jobs, the need for individual mock-up of each particular job would often be eliminated. After conferring together at the panel display site, persons involved in the job could refer to the panel of choice in their specifications, estimating and negotiating. If desired, the architect could select one finish as the basic specification for a job, then call for a certain deviation; perhaps a buff rather than a gray cement or maybe a larger size aggregate of difference in gap grading. Both the architect and the contractor could see, understand and accept the effect desired before specifications were finalized and before cost estimates became contract commitments.