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state the group efficiency of a rectangular group of piles with 4 rows 3 piles per row the uniform pile spacing being 3 times the pile diameter if
a square pile group of 9 piles of 25 cm diameter is arranged with a pile spacing of 1m the length of the piles is 9 m unit cohesion of the clay is 75
a 30 cm diameter pile penetrates a deposit of soft clay 9 m deep and rests on sand compute the skin friction resistancethe clay has unit cohesion of
a wood pile of 10 m length is driven by a 1500 kg drop hammer falling by 3 m to a final set equal to 125 cm per blowmeasure the safe load on the pile
describe the basic difference in the bearing capacity computation of shallow and deep foundationshow are skin frictions and point resistance of a
according to national building code sp7 1970 the differential settlement shall be kept within the limits to which the superstructure can accommodate
creep occurs secondary compression after consolidation settlements we defined consolidation settlement as that compression during which excess pore
a square pile group of 9 piles passes by a recently filled up material of 45 m depth the diameter of the pile is 30 cm and pile spacing is 90 cm
a 16-pile group has to be arranged in the form of a square in soft clay with uniform spacing neglecting end-bearing verify the optimum value of the
a square group of 9 piles was driven into soft clay extending to a large depth the diameter and length of the piles were 30 cm and 9 m respectively
q utilisation of buoyancy effectsubmerged part of the substructure will be subjected to buoyancy effect the uplift pressure from the ground water can
q preloading - control of settlementsthis method consists of loading the soil strata by a load intensity which will be equal to or higher than the
a group of 16 piles of 50 cm diameter is arranged with a centre to centre spacing of 10 m the piles are 9 m long and are embedded in soft clay with
a pile is driven in uniform clay of large depth the clay has unconfined compression strength of 90 knm2 the pile is 30 cm diameter and 6 m long
inspite of the problems of sample disturbance if 1 e or e vs log p curve is interpreted reasonably with some corrections for sample disturbance 2
the integration of strain over the depth is settlement the method of producing the settlement is non-recoverable when the intensity of stress is
a raft 8 m times 24 m is founded at a depth of 4 m in sand with a value of n 20 up to great depth illustrate the total load which the raft can
a raft 9 m times 27 m is founded at a depth of 3 m in sand with a value of n 25 up to great depthverify the total load which the raft can
two load tests were performed at a site-one with a 50 cm square plate and the other with a 75 cm square plate for a settlement of 15 mm the loads
a 18 m square column is founded at a depth of 18 m in sand for which the accurate n-value is 24 the water table is at a detph of 27 mverify the net
q computation of settlementthe settlement in any soil mass under an applied stress is given bys si sc sswheres total settlementsi
q settlement due to deteriorationthe deterioration of foundation concrete will result in the vicinity of sulphates chlorides and chemically
q settlement due to reduction in volume of soilthe weight of the structure causes reduction in volume of soil due to expulsion of pore water from the
q show the settlement due to vibrationthe foundation resting on cohesionless soil and subjected to vibrations will result in settlements of higher
q settlement due to lowering of water tablewater table is encountered with whenever any excavations are made for foundations the water is to be out