b. Form Tiles: Bolts and rods used for intemal ties which are to be removed shall be coated with grease and so arranged that when the forms are removed, all metal will be not less than 1 inch from any concrete surface. Wire ties will not be permitted where the concrete surface will be exposed to weathering, or at any point where discoloration will be objectionable. The design of form ties shall be subject to the approval of the Engineer. ec. Joints: All corners of columns, girders and beams and other exposed joints in more than one plane unless otherwise indicated on the drawings, or directed by the Engineer, shall be beveled, by moldings placed in the forms. d. Coating: coated with oil, rounded or chamfered Forms for exposed surfaces shall be applied before the reinforcement is placed. After olling, any surplus oil on the form surfaces and any oil on the reinforcing steel, shall be removed. Forms for unexposed surfaces may be thoroughly wetted with water in lieu of olling, the placing of concrete. immediately before e. Removal: Forms shall not be disturbed until the concrete has adequately hardened. Shoring shall not be removed until the member supported has acquired sufficient strength to safely support its own weight and the load imposed on the shored member. Care shall be taken to avoid spalling the concrete surface. Wood forms shall be completely removed from under porches, steps and similar spaces (through temporary openings 1. Tie-rod clamps that are to be if necessary) in order that no material will be left for termite infestation. Clamps: entirely removed from the wall shall be loosened 24 hours after the concrete is placed and form ties, except for a sufficient number to hold the forms in place, may be removed at that time. Ties that are wholly withdrawn from the wall shall be pulled toward the inside face. The cutting of form ties back from the face of the wall will not be permitted. 2. Timing: Under normal conditions, after placing concrete, the minimum waiting period before the forms may be stripped shall be governed by the following schedule, but the use of this schedule shall not operate to relieve the contractor of responsibility for the safety of the structure. 5-18