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Explain the Ion Exchange water Softening
Softening is usually done using a resin (natural or synthetic long chain chemical with a sodium ion attached). When water containing hardness ions is passed through the resin, the hardness ions (Ca, Mg) exchange with Na ions on the resin (thus the resulting water is free of hardness ions but high in sodium).
When the sodium ions on the resin are exhausted, the resin is regenerated using a brine solution (which replaces all hardness ions attached to the resin with Na ions again) and the resin can be used again.
Explain the term - Prestressing Force Due to the stretching of tendons, tensile stresses develop inside tendons. Resultant prestressing force in tendons may be calculated by m
#how to prepare pre packed concrete#
Explain the Confined Aquifer and Piezometric Surface Confined Aquifer Groundwater is confined by impervious geologic stratums on all sides. The water may be under pressure.
Question For classic pile bents in marine piers, how can vertical loads related to horizontal capability of pile bents? Answer At first consider a pile bent with a top
individual wall methods benefits?
compressive stenght assigments.
Define the term - Clamp splice In a Clamp splice, bolts and nuts alongwith clamp plates are used. Tendons are held in-between the clamp plates and these clamp plates are tighte
An F-16 lands on aircraft carrier and its velocity is 63 m/sn. If its decceleration is assumed to be constant and it must stop in 2.0 sec. a) What is final position of plane if i
Explain Situations that warrant a damage inspection? - Floods - bridges located in streams, rivers and other waterways with known or suspected scour potential. - Build-up of
whether the wall has adequate sliding resistance
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