Hot & Cold Weather Masonry Construction
Requirements
Table 1
Hot Weather Preparation and Construction Requirements
(ACI 530.1-98/ASCE 6-98/TMS 602-98)
Temperature Range
(Ambient)* |
Preparation Requirements
(Prior to Commencing Masonry Work) |
Construction Requirements
(While Masonry Work is in Progress) |
Above 115°F
(46.1°C) or Above 105°F
(40.6°C)
with a wind velocity greater than 8 mph (12.9 km/h r) |
Shade materials and mixing equipment from direct sunlight Maintain sand piles in a damp loose condition Provide necessary conditions and equipment to produce mortar and grout having a temperature below 120°F (48.9°C) |
Use cool mixing water for mortar and grout Maintain temperature of mortar and grout below 120°F (48.9°C) Flush mixer, mortar and grout transport container and mortar boards with cool water before they come into contact with mortar ingredients or mortar Maintain mortar consistency by retempering with cool water Use mortar within 2 hours of initial mixing |
Above 100°F
(37.8°C) or Above 90°F
(32.2°C)
with a wind velocity greater than 8 mph (12.9 km/h r) |
Maintain sand piles in a damp, loose condition Provide necessary conditions and equipment to produce mortar and grout having a temperature below 120°F (48.9°C) |
Maintain temperature of mortar and grout below 120°F (48.9°C) Flush mixer, mortar and grout transport container and mortar boards with cool water before they come into contact with mortar ingredients or mortar Maintain mortar consistency by retempering with cool water Use mortar within 2 hours of initial mixing |
* The surrounding jobsite temperatures when preparation activities and construction are in progress.
Table 2
Hot Weather Preparation and Construction Requirements
(ACI 530.1-98/ASCE 6-98/TMS 602-98)
Temperature Range
(Mean Daily)* |
Hot Weather Protection Requirements
(Newly Completed Masonry Construction) |
Above 100°F
(37.8°C) or Above 90°F
(32.2°C)
with a wind velocity greater than 8 mph (12.9 km/h r) |
Fog spray all newly constructed masonry until damp, at least three times a day, until the masonry is three days old |
* The temperature calculated to be the average of the extremes forecast by the local weather bureau over the next 24 hours.
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