03-12-1984 Council Packet - Laserfiche WebLink

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Olt Mer OW 04200.5.2. Mixing Mortar: Mortar shall be used and placed in final position within 3 hours after mixing where the temperature is 80 degrees F. or less and within 2 hours after mixing if the temperature is over 80 degrees F. Mortars which have stiffened due to evaporation within these times may be reworked to restore workability by adding water and mixing. No retempering will be al- lowed for stiffened mortar from other causes. 04200.5.3. Placing Reinforcement: Block reinforcing shall be placed in every other course unless otherwise called for on the plans. All anchors, plates, lintels and other related items shall be properly anchored and grouted into place. Provide solid masonry or solid grouted and reinforced bearing beneath ends of all joists, beams and lintels. Provide 4" masonry bonding at all in- tersections of walls unless shown otherwise on the plans. 04200.5.4. Placing Grout: Grout shall be placed by pouring in lifts not ex- ceeding 6 feet in height. It shall be consolidated by puddling or vibrating during placing and reconsolidated after excess moisture has been absorbed, but before plasticity is lost. Special care shall be given to holding reinforcing steel in the proper posi-- tion during the grouting operation for both bond beams and pilasters. 04200.5.5. DETAILS: The masonry contractor shall build in properly all an- chozs, ties, plates, joists, beams, lintels, fleshings, inserts and all cor- related items which come in contact with masonry work. All drawings and spec- ifications shall be checked for other branches of work to ascertain proper lo- cations. All openings, frames and work built in connection with the masonry shall be checked and discrepancies reported. Modular sizes are intended wherever possible and all dimensions shall be reviewed prior to setting open- ings. All openings, chases, recesses, and other pertinent details on the me- chanical and electrical layouts shall be provided. Miscellaneous angles for openings are covered under Specification OS500. 04200.7. COLD WEATHER PROTECTION: 04200.7.1. Preparation: a. If ice or snow has formed on masonry bed, remove by carefully applying heat until top surface is dry to the touch. b. Remove all masonry deemed frozen or damaged. 04200.7.2. Products: a. Use dry masonry units. b. Do not use wet or frozen units. 04200.7.3. Construction requirements while work is progressing a. Air temperature 40°F. to 32°F. (1) Heat sand or mixing water to produce mortar* temperatures betu-,en 40°F. and 120°F. i# V 04200-3 0-9693b