specifications - FAACO - Federal Aviation Administration Contract ...

FTWIC-2235June, 2009Min.28 Day Min.Comp. Sacks of Max. Size Max. WaterStrength Cement Aggregate Gals/Bag Max. SlumpClass (psi) Per/C.Y. (in.) (net) (in.)*A 4000 6.0 1.5 5.25 4-6Size No.467B 4000 6.0 1.5 5.25 4Size No.467C 4000 6.0 1.0 5.25 4Size No.57D 6000 6.5 0.75 5.25 5Size No.67E 2000 4.0 1.5 7.0 4Size No.467F 1000 3.0 1.5- 1-1/2 - 3Size No.467G 4000 6.5 0.375 5.25 4Size No.8* Maximum slump with water high range reducing admixture may be increased to 7" - 9".C. CONCRETE USAGE:Class A Use: All reinforced concrete on ATCT/Base-EG Building unless otherwisespecified; All Slabs on Metal Floor Decks, Sidewalks, Manholes, Storm Drains,PavementClass B Use: All reinforced concrete on Tower unless otherwise specifiedClass C Use: Pumped Concrete, Concrete Piers, Thin Wall SectionsClass D Use: Precast ConcreteClass E Use: Cradling, Blocking, Foundation SealClass F Use: Lean Concrete BackfillClass G Use: Stair Pans and Landings1. The maximum amount of coarse aggregate (dry loose volume) per cubic foot offinished concrete shall not exceed 0.82 cubic feet.2. The maximum amount of water, as established in the table above, includes thewater in the aggregate, with the aggregates in a saturated, surface-dry condition.3. The maximum water content shall be the amount added at the mixer, plus the freewater in the aggregate, and minus the absorption of the aggregate based on a30-minute absorption period. No allowance shall be made for the evaporation ofwater after batching. If additional water is required to obtain the desired slump, acompensating amount of cement shall also be added. The maximum03300-2