The lack of predictability of architectural concrete surfaces is frustrating both to contractors and architects. Many designers have attributed poor results to inexperienced contractors, and contractors have justifiably claimed that what the architect wanted was not the same as he/ she had indicated in the contract documents. To have a reasonable anticipation that results will be as planned, the contractor needs to isolate, understand and utilize the keys for obtaining the finish objective. The contractor should also verify that the keys have been properly treated in the architect's office. The table provided in the article reflects the degree of influence which various details in the construction process have on architectural concrete finishes. A rating of 4 indicates that the degree of influence is low. When such a rating is given the construction methods normally required for a good structural concrete project are sufficient. A rating of 1, however, indicates the degree of influence is high and careful control of the construction process or details is critical to achieving good results in architectural concrete. Ratings 2 and 3 are relative intermediate levels of influence. The table will be of value in helping the designer determine the best finish for the construction conditions of a particular project. The architect should first study the locale where the work is to be performed and evaluate forming know-how, contractor techniques, ready mixed concrete and precast concrete facilities, and the overall quality of work completed in the past. Should he find that there are great limitations concerning delivery of special mixes, he should avoid any design requiring a heavy abrasive blast finish because it would place a big demand on a special concrete mix. A finish objective more absorptive form would take better advantage of the capabilities.