Bricks. The contractor should use the bricks manufactured on the metric system, as for as possible.
Bricks. Bricks shall uniform colour, thoroughly burnt but not over burnt, shall have plan rectangular faces with parallel sides and sharp right-angled edges. They should give ringing sound when struck. Brick shall not absorb more than 20% to 22% of water, when immersed in water for 24 hours. Bricks to be used shall be approved by the Independent Engineer.
Bricks. Bricks shall be sound, hard, well-burnt, uniform in size, shape and colour, homogeneous in texture, giving a metallic ringing sound, free from flaws, cracks, holes, lumps or grit and arises should be square, straight and sharply defined. They shall not break when struck against each other and dropped flat from a height of 1m to the ground. They shall conform to IS 1077 giving classes of common burntclay bricks. Maximum absorption shall not be more than 20% of its dry weight on immersion in water for 24 hours. Minimum crushing strength shall be 75 kg/sq cm. Bricks for masonry work in foundations as well as in superstructure shall be first class burnt clay bricks conforming to PWD Specifications.
Bricks. All bricks shall be of 75 class designation quality locally available as approved by the Site Engineer.
Bricks. All bricks shall be obtained from Clayworks Limited, P.O. Box 45154, Nairobi, of sizes as required and shall be hard, sound, square, well- burnt, uniform in shape and free from cracks, stones and other defects. Samples of bricks shall be deposited with and be approved by the Architect before being used and all subsequent bricks used in the Works shall be equal to the approved sample.
Bricks. Basing on the strong foundation of trust, ethics and integrity, bricks are placed to reach the roof of recognition. It includes:
Bricks. Bricks shall be stacked in regular tiers as and when they are unloaded to minimize breakage and defacement. These shall not be dumped at site.
Bricks. Damaged, broken or chipped bricks shall not be installed. LGL and the Contractor shall establish guidelines regarding the acceptance of marginally damaged bricks. Cutting of the bricks shall be done outside the Autoclave. The cuts shall be smooth and straight to provide a good bonding surface. The cuts shall be made with a brick cutting saw only. All residual water on the cut piece shall be wiped off with a clean dry rag. To prevent air moisture condensation, which would impair mortar quality, no bricks shall be laid when the temperature is less than 3°C above the ambient air dew point at the location where the refractory lining is being installed. The temperature of the brickwork must be maintained within the range of 10°C and 32°C until the mortar is set.
Bricks. Notwithstanding the provisions of subclause 3.4.1 the bricks to be used on this contract shall be “Engineering Bricks”.
Bricks. Notwithstanding the requirements of Subclause 3.11.1 of SANS 1200L, 230 mm wide hollow concrete blocks with minimum compressive strength 3,5 MPa and filled with Grade 15 MPa mass concrete, will be accepted for valve chamber walls.
