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Measurement of cement and aggregates - by weight vs. by volume
Measurement of constituents for concrete is usually carried out by weight since of the following reasons:
(i) Air is trapped inside cement whereas water may be present in aggregates. As such measurement by volume necessitates the consideration of the bulking effect by air and water.
(ii) Accuracy of measurement of cement and aggregates by weight is higher when compared with measurement by volume when weighing machine is properly calibrated and maintained. This decreases the potential of deviation in material quantity with higher accuracy in measurement for the design mix and results in more economical design without the wastage of excess materials.
Requirements of Good Building Stones Here described requirements of good building stones: Strength: The stone should be capable to resist the load coming on
An earthwork contractor encountered a location within the borrow area where the geological conditions changed. Instead of encountering 100 cubic yards of wet clay, the contractor
Define Scour - Underwater Inspection of Bridges? Whenever a bridge crosses a waterway, even a small or intermittent one, scour is a dangerous effect that can damage bridge pier
Sieve Analysis - Soil Mechanics and Foundations a. Sieve Analysis used to obtain the grain size distribution of coarse-grained soils (sands and gravels) larger than 0.075 mm (r
Estimate the ground level NO concentration: a. Directly downwind at a distance of 2 km b. At the point downwind where NO is maximum c. At a point located 2 km downwind and 0.1 km
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Define Marine growth - underwater inspection of bridge? Generally, in seawater marine growth takes place. Acid generated by the marine growth attacks concrete. This can lead to
write buckling and dislodging of brick slip?
the elevations of grid points for an area as follows: 1 2 3 4 5 6 7 8 F 690 709 726 732 735 740 743 747 E 696 715 729 736 740 737 739 740 D 702 723 733 742 737 737 745 747 C 707 72
job compatability test
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