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Explain Hardness - Water Softening
1) Hardness is used to characterize a water that does not lather well, causes a scum in the bath tub and leaves hard, white, crusty deposits when water is heated
2) Calcium or magnesium forms soap- Ca or Mg complex and prevents soap from interacting with dirt
3) Hardness- caused mainly by Calcium and Magnesium(actually all polyvalent ions)
4) Common units are meq/l or mg/l as CaCO3
Q. Write short note on Surplus Store? Comprise stores which are surplus to requirements and include materials released from renewals and replacements as well as from dismantled
Soil Compaction: Soils used in road construction need to be thoroughly rolled and compacted. Compaction of soil is needed for the following reasons. (a) A well compacted s
Explain Template Jig? 1) Template jig is the simplest type of jig, employed for accuracy than speed. 2) This jig fits over, on, or, into the work and is not generally clampe
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Stress corrosion of pre-stressing steel Stress corrosion is crystalline cracking of metals under tensile stresses in the presence of corrosive agents. Conditions for stress cor
Cross Drainage Work: Several natural streams, rivers and canals cross the road. They have to be led across the road through culverts and bridges. That given structures is kno
Explain in detail about Textural classification. Sketch neatly the Casagrande's plasticity chart indicating several aspects. How would you use it in classifying the fine graine
Material for formwork and their specifications
Question For compaction of free-draining sands or gravels, what is optimum moisture content to grab maximum density ? Answer Compaction curve of dirty materials is com
Obstacles which can be ranged
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