2016-042 Resolution - Laserfiche WebLink

Home Browse Search

3.14 HOT WEATHER CONCRETING A. Thorough preparation for protection against hot weather damage to concrete shall be made well in advance. Hot weather concreting shall be performed in accordance with ACI 305. B. The maximum concrete temperature, at time of placement, shall be limited in accordance with ACI 305, Figure 2.1.5. The evaporation rate of the mixing water shall not exceed 0.2 pounds of water per square foot per hour. C. One or more of the ingredients may have to be cooled to keep the temperature of the concrete from being excessive at time of placement. The replacement of part of the mixing water with an equal weight of crushed ice is recommended for effective cooling per ACI 305, figure 2.3.6. D. In-place concrete shall be protected and cured so as to minimize drying and absorption of heat. 3.15 PUMPED CONCRETE A. The use of pumped concrete shall be approved in each case by the Engineer. B. The proposed mix design for each class of concrete to be pumped, including all necessary background data of test results, shall be submitted to the Engineer for approval. C. All slump and cylinder test samples shall be taken from the end of the discharge line. D. Cutting and patching on any portion of the work after it has been completed shall be done only with the approval of the Owner's Representative. E. Forms, equipment, protective coverings, and rubbish resulting therefrom shall be removed from the premises upon completion of the work. PART 4.00 — TESTING AND INSPECTION 4.01 INSPECTION: All forms and reinforcement shall be inspected and approved by the Owner's Representative before concrete is placed. If work is found unsatisfactory, the work shall not proceed until all defects have been remedied. Repaired work shall be approved by the Owner's Representative. Such approval will in no way relieve the contractor of his obligation to produce finished concrete as required by the drawings and specifications.