specifications - FAACO - Federal Aviation Administration Contract ...

FTWIC-2235June, 2009completely filled, strike off flush excess mortar and finish the surface to render the filled holeinconspicuous.3.21 FIELD QUALITY CONTROL; DEFECTIVE WORK:A. If the surface of the concrete is bulged, uneven, or shows honeycombing or form marks,which in the Contracting Officer's opinion cannot be repaired satisfactorily, remove andreplace the entire section.B. The Contracting Officer may withhold payment for any section of concrete which doesnot meet the requirements of these specifications. Withheld payment shall be based uponthe unit prices established for concrete and reinforcing steel. Payment shall be withhelduntil the unacceptable concrete has been refinished, removed and replaced or otherwisebrought into conformance with the specifications.C. Patch honeycomb and minor defects in all concrete surfaces with structural concreterepair material. Cut back each defective area with a pneumatic chipping tool as deep asthe defect extends, but in no case less than 1/2". Prepare the existing concrete accordingto the recommendations of patching material manufacturer's. Apply repair materialaccording to the manufacturer's recommendations. Finish the surface of the patches tomatch finish on surrounding concrete.3.22 SCHEDULES:Submit a schedule to the Contracting Officer which shows the sequence of concrete placements.Unless otherwise provided, the following requirements shall govern the time sequence on whichconstruction operations shall be carried.A. Forms for walls or columns shall not be erected on concrete footings until the concrete inthe footing has cured for at least two (2) curing days. Concrete may be placed in a wallor column as soon as the forms and reinforcing steel placements are approved.B. Steel beams or forms and falsework for superstructures shall not be erected on concretesubstructures until the substructure concrete has cured for at least four (4) curing days.Falsework required for superstructures shall not be erected until the substructure hascured for four (4) curing days, and shall not be removed until the superstructure hascured.END OF SECTION03300-29