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define role of diver in underwater inspection of bridgedivers role is primarily to point out a potential scour problem the diver can use one of the
define investigation scour for underwater inspection of bridgeinvestigation scour is probably the most critical item to be aware of when performing
define cleaning for underwater inspection of bridgebefore any structure can be inspected it is necessary to expose the surface material of the
define safety precautions for underwater inspection of bridgethe working agency should have its own diving safety manual which should be strictly
q write a note on clampers clamper is a circuit that clamps a signal to a different dc level the different types of clampers are positive negative
q in a differentiating circuit r10 kwand c22mufif the input voltage goes from 0v to 10 v at a constant rate in 04s determine the output voltage
define divers in a team for underwater inspection of bridgeone team of divers should have minimum three members this is a requirement of safe working
define diver qualification - diving operation for bridge inspectionthe requisite qualification for divers and diving supervisors are given in is
q explain with the help of a circuit diagramthe operation of colpitts oscillatoroscillator is a circuit used to generate ac voltage without acinput
the conditions necessary for sustained oscillation can be summarized as follows1 there should be a positive feedback2 the loop gain of the circuit
q discuss the operation of a transistorized phase shift oscillator with the help of a diagram explain the phase shifting circuitan oscillator is a
the process of installation of elastomeric bearing differs in case of precast vis-a-vis cast-in-situ girders for precast girders the bearing may be
define diving operation - preparation for underwater inspectionuse of experienced divers trained and screened by a reputed commercial diving school
1 elastomeric bearings must not be placed one behind the other along the longitudinal axis of the girder on a single line of support under any
preparation for underwater inspection - availability of tools and equipment the engineer-in-charge before taking up the inspection should list out
q do you mean by accelerated agingaccelerated ageing tests are conducted at elevated temperature of 100o c to know the variation in hardness uts and
q what do you mean by ozone testsome research and studies determined that the ozone test was unnecessary as this affects only the surface layer
review of available records - preparation for underwater inspectionbefore taking up the underwater inspection a detailed review of drawings and past
q inspection and quality control certificate a lot under inspection should be accepted by the inspector when no defect is found in the acceptance
define the planning an underwater inspection planning for underwater inspection is important because of- unknown factors which may be discovered
level 2 acceptance testing this will also include the same tests as in level 1a general inspectionb test on specially moulded test piecec test on
q test for determination of ultimate compressive strengththe test pieces are to be loaded either till the failure of the steel laiminate or till the
explain the underwater inspection procedures - inspection of bridgeunder-water bridge inspection especially the initial inspection requires careful
test for determination of shear modulus conditioning load bearings shall be preloaded with maximum horizontal load htest with ntest or vertical load
1 all testing shall be done at room temperature2 no bearing shall be tested earlier than a week after vulcanization3 bearing sections shall be cut