specifications - FAACO - Federal Aviation Administration Contract ...

FTWIC-2235June, 2009batching plant to the mixers in separate compartments which are equipped withwindproof and rain-proof covers.PART 3.00EXECUTION3.01 PREPARATION:A. Notify the Contracting Officer upon completion of various portions of the work requiredfor placing concrete, so that inspection may be made as early as possible. Keep theContracting Officer informed of the anticipated concrete placing schedules.B. All items, including lines and grades, forms, waterstops, reinforcing, inserts, piping,electrical, plumbing and the Contractor's concreting materials and equipment shall be incompliance with the plans and specifications before proceeding.C. Do not place any concrete until formwork and the placing reinforcement in that unit iscomplete. Place no concrete before the completion of all adjacent operations whichmight prove detrimental to the concrete.D. Brilliantly light the work site so that all operations are plainly visible when concretemixing, placing, and finishing continues after daylight. Whenever possible, concretefinishing shall be completed in daylight hours.E. When placing concrete, the forms shall be clean and entirely free from all chips, dirt,sawdust and other extraneous matter. Forms for slab, beam and girder construction shallnot have tie wire cuttings, nails, or any other matter which would mar the appearance ofthe finished construction. Clean forms and keep them free of any foreign matter duringconcrete placing.3.02 EXPANSION JOINTS AND DEVICES:A. EXPANSION JOINTS:Construct expansion joints and devices to provide expansion and contraction. Constructjoints which are to be left open or filled with poured joint material with forms which areadaptable for loosening or early removal. In order to avoid jamming by the expansionaction of the concrete and the consequent likelihood of injuring adjacent concrete,remove or loosen these forms as soon as possible after the concrete has initially set.Make provisions for loosening the forms to permit free concrete expansion withoutrequiring full removal.B. WORKMANSHIP:Exercise careful workmanship in joint construction to separate the concrete sections byan open joint or by the joint materials, and make the joints true to the outline indicated.3.03 CONSTRUCTION JOINTS:A. Construction joints are formed by placing plastic concrete in direct contact with concretewhich has attained its initial set. When concrete is specified as monolithic, the term shall03300-18