16) Describe the quality procedures for concreting work on site. 17) For a simpl
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16) Describe the quality procedures for concreting work on site. 17) For a simple housing project, what are the typical components of the pipeline works? Examples and sketches can be used to illustrate. 18) Function of an air valve and what role it has in a culvert crossing. 19) Sketch a culvert crossing, 20) Provide the symbols pillar hydrant, sluice valves fittings 21) Describe the typical activities of earthmoving works 22) List out the different type of machineries for a. Excavation b. Loading c. Rolling 24) Describe the typical parts of a backhoe and describe the excavation motionExplanation / Answer
16) Quality procedure for concreting work :-
Quality of concrete procedure on site can be accomplished in three stages
i) Quality control before concreting :-
ii) Quality control during concreting :- Careful supervision during concrete manufacture is necessary for all concreting operations such as batching, mixing, transporting, laying, compacting and curing.
iii) Quality control after construction :- Once the concrete is laid and compacted, compression tests are made on the cubes made out of this concrete. For ordinary concrete, cubes are made out of the concrete made at work site.
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