Concrete work

• Pages: 221-232

25. Concrete work

25.1. General provisions

25.1.1. The construction of heavy reinforced concrete roofs

and other heavy overhead structures should be based on plans

that:

(a) include specifications of the steel and concrete and other

material to be used, including technical methods for safe

placing and handling;

(.5) indicate the type, strength and arrangement of load-bearing

parts; and

(c) provide, if appropriate, calculations of the strength of roofs

or other heavy overhead structures made with prefabricated

parts.

25.1.2. During the construction of heavy reinforced concrete

roofs and other heavy overhead structures, a daily record should

be kept of the progress of the work, including indications of all

data which could affect the curing of the concrete.

25.2. Preparation, pouring and erection of concrete

25.2.1. Workers handling cement and concrete should:

(a) wear close-fitting clothing, gloves, helmets or hard hats,

safety goggles and suitable footwear and, if necessary to

prevent danger, respirators or masks;

(.5) keep as much of the body covered as is practicable;

take all practicable precautions to keep cement and concrete

away from the skin; and

wash frequently and, if necessary, use appropriate cream on

exposed skin.

25.2.2. When work is done with cement, lime and other dusty

materials, or machines for crushing, grinding or sifting building

materials are operated in enclosed premises:

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