Why should the control joints in a concrete slab-on-ground be provided as soon as possible?
What will be an ideal response?
The concrete begins to shrink almost immediately after placement with the evaporation of its water. Delaying the provision of control joints (weaknesses) will cause the cracks in unwanted locations.
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Los precipitadores quitan las partículas de combustión con _____.
a. filtros con bolsas b. placas cargadas c. filtros con placas d. líquido
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In the split-system air conditioner the condenser fan can run without the compressor running
Indicate whether the statement is true or false
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The removal of all remaining combustion gasses from a boiler after firing is accomplished by ___________.