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Question
What is key principle of adding cooling pipes or yet using cold water for concrete in concreting operation?
Answer
These methods aim at reducing placing temperature and falling thermal cracks induced during concreting of enormous pours. Because final concreting temperature has to be ambient temperature, reducing initial placing temperature will also lower peak hydration temperature. Therefore, temperature divergence between hydration peak and ambient temperature is reduced so and subsequently thermal effect to concrete structure can be abridged by controlling placing temperature.
Tensile stresses It has been possible to introduce tensile stresses of upto 850 N/mm 2 in tendons with the use of this method. But the method is not suited in situations where
view particle size grading curve
Q. Diffrence between Single and double-cell box culvert? The usage of double-cell box culverts is preferred to single-cell box culverts for cross-sectional area larger than abo
Question What is the sucker deck principle for changeable depth bridge decks ? Answer For a variable depth bridge deck, depth of continuous multi-span bridge deck is greate
Obtain the values and direction of the supporting reactions of the truss given below. Use the method of section to determine the forces in each member.
Reinforcement in thrust blocks In general situation, reinforcement isn't essential for thrust blocks in pressurized pipelines. Though certain amount of reinforcement hasto be
Q. Explain Plate loading test? In general iron plates either 60 cm squares or 75 cm dia and 16 mm thick are used, size of plate should not be less then 1/5th of the width of f
due to defectiveseasoning and conversion
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The footprint of a proposed office building is overlaid on the existing contours topographic map of a sloping site as shown in the figure. The structural bays which are 65-ft by 65
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