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B. Perform tests of each brick/mortar combination to determine flexural bond strength in accordance with ASTM <br /> C1072. <br /> PART 3: EXECUTION <br /> 3.01 LAYOUT <br /> A. Unless noted on Drawings as 'blear", all dimensions on Drawings are modular, from center to center of vertical <br /> joints and from bottom to bottom of horizontal joints. <br /> B. Lay out exposed masonry to achieve joint pattern shown on Drawings. Where not shown,lay out exposed masonry , <br /> to minimise cutting of units. Where possible, provide full 8" wide units at outside comers, jambs, and other <br /> openings. <br /> 3.02 MORTAR <br /> A. Mortar proportioning and mixing is specified in Section 04100. <br /> B. Tempering: The consistency of mortar may be adjusted to the satisfaction of the mason. Use mortar within two and <br /> one half(2-1/2)hours after mixing. <br /> C. Type: Lay masonry in mortar of the type specified below,as adjusted for compatibility with masonry units. <br /> Kind of Masonry Mortar Type <br /> Concrete masonry in contact with the ground S <br /> Load bearing concrete masonry S ' <br /> Brick masonry exposed to weather N <br /> All other masonry S <br /> 3.03 PRECAUTIONS , <br /> A. Cold Weather Requirements <br /> 1. Cold weather conditions exist when temperature is 40 degrees F.or below. i <br /> 2. Keep masonry units dry. Do not use wet or frozen masonry units. <br /> 3. Following general rules may be modified as approved by Architect to suit project conditions. ' <br /> AIR TEMP. ' <br /> (Degrees F.) CONSTRUCTION REQUIREMENTS <br /> 40-32 Heat mix water or sand to produce mortar temperature between 40 degrees F. and 120 <br /> degrees F. <br /> 32-25 Heat mix water and sand to produce mortar temperature between 40 degrees F. and 120 <br /> degrees F. Maintain temperature of mortar on boards above 40 degrees F. Employ , <br /> windbreaks when wind is in excess of 15 MPH. <br /> 25-20 Heat mix water and sand to produce mortar temperature between 40 degrees F. and 120 ' <br /> degrees F. Maintain temperature of mortar on boards above 40 degrees F. Heat <br /> masonry units so their temperature when laid is not less than 20 degrees F. Utilize <br /> sources of heat on both sides of wall under construction. Employ windbreaks when wind <br /> is in excess of 15 MPH. <br /> 042004 No.99132-CP2 <br />