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q what do you mean by piston samplerin sampling silts orclays piston sampler is lowered into boreholes and piston is locked at bottom of the sampler
landslides induced by rainfall after rainfall groundwater pressure is built up and this elevates ground water table water inside the pores of soil
q kicker of reinforced concrete cantilever retaining walls located at the position of largest moment and shear force - why generally for reinforced
q show the grout curtain around excavationwhen excavation work is performed in grounds with highly permeable soils other than installation of well
q granular fill or rock fill essential at the base of concrete retaining walls it isnt uncommon that rock fill layers and granular fill layers are
q show the functions of diaphragm wallsthe functions of diaphragm walls are as follows i it is designed to maintain soils during the construction
would there be a difference in the result of an underwater rebound hammer versus a typical rebound
q formation of frost heavein the past it was believed that formation of frost heave was related to volumetric expansion of soil water which changed
q show the direction of gunning in shotcretingat the time of the construction of shotcrete it is intended at gunning the full thickness in one single
q what do by diaphragm wallfor the construction of diaphragm walls adjacent to buildings former experience showed that excess slurry head above
q show the continuous piezocone penetration testcontinuous piezocone penetration test essentiallycomprises standard cone penetration test and a
q core-barrel samplers single tube sampler vs double tube sampler vs triple tube sampler core barrel samplers are initially designed to sample rock
q bleeding test for grout ndash an essential requirementbleeding is a form of segregation in that a layer of water migrates to surface of the grout
q explain about bentonite slurry and polymeric slurryfor the construction of diaphragm walls bentonite slurry is generally used to form a filter cake
uncompacted bedding for concrete pipes in the middle third of the base of precast concrete pipes bedding layers are suggested to be left uncompacted
q what is stilling basinsstilling basins are usually introduced to convert supercritical flow to subcritical flow before it reaches downstream a
side clearance of pipes in trenches from the design point of view its predominant to minimize the width of pipe trenches due to thebelow reasonsi
q diffrence between single and double-cell box culvertthe usage of double-cell box culverts is preferred to single-cell box culverts for
most of the existing rubber dams are of air-filled types water-filled rubber dams arent preferred for the below reasonsi by giving same sheet
relation of the angle of contact between pipe invert and bedding material to the load resisting capacity of pipe minimum crushing strength is a
reason in checking the ratio ie design flow to full-bore flow gt 05 in circular pipe design for checking of self-cleansing velocity for pipes there
purpose of carrying out water absorption test for precast concrete pipes cement will mix with more water than is essential to ultimately combine
q defaults for precast concrete pipes made by spinningsmall diameter precast concrete pipes are generally manufactured by spinning method the
on-line storage vs off-line storage design of storage pond is commonly divided into off -line storage and on-line storage the on-line storage concept
q what do you mean by manhole lossmanholes are provided in locations where there are changes in direction size and gradient of gravity pipelines