Concrete Base. As shown on the Drawings. Concrete shall be furnished by a well-known, reputable ready- mix concrete company. Mixing, transporting and placing of concrete shall conform to ASTM C94. Curing shall be performed in accordance with standard practice to prevent excessive shrinkage or cracking.
Concrete Base. All aspects of constructing Portland cement concrete roadbase on a compacted and prepared sub base shall conform to the requirements of the F.D.O.T. "Standard Specifications", latest edition except as authorized by the County's Representative.
Concrete Base. The concrete base, reinforcing cage and fixings shall be designed and constructed to the requirements of SANS 1200 A, SANS 1200 AA, SANS 1200 G, SANS 1200 GA, SANS 10144, SANS 10145, SANS 17660- 1, SANS 17660-2 and SANS 920. The base design shall include at least two 110mm diameter PVC ducting to allow the supply cable and the two 35mm² copper earthing conductors access from below ground level to the inside of the mast without being visible above. The positioning of the ducting must be clearly marked on the foundation of the mast. The Contractor shall test the soil bearing pressure for each mast prior to casting the concrete base to ensure that the soil load bearing conditions are suited to the specific concrete base design. The cost of these tests shall be included in the pricing schedule. The results of these tests must be discussed with the Engineer prior to casting of the concrete base and hand the results over to the Engineer prior on completion of the project. All reinforcing and foundation bolts shall have a minimum of 100mm concrete cover. The 28 days cube strength of the concrete shall be stated by the Contractor All foundations shall have a circular flat base from which a square plinth shall rise to above the surrounding ground level. After casting of the foundation, the slab shall be covered by earth, properly compacted. The area around the plinth shall be brought to the original level and shall be left neat and tidy.
