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high strength friction grip hsfg bolts vs normal bolts hsfg bolts have the following benefits when compared with normal boltsi performance of
q fire resistance of steelwork because of the high thermal conductivity of steel temperature of unprotected steel is almost the same as temperature
q what is corrosion inhibitorscorrosion inhibitors are chemical substances that when added in small concentrations stop or decrease the corrosion or
q explain about castellated beamscastellated beams refer to the type of beams which involve expanding a standard rolled steel section in such a way
q butt weld ndash from one side vs from both sidesin the design of butt weld strength its normally presumed that its strength is at least equivalent
unsealed contraction joints in concrete pavement for unreinforced concrete pavement contraction joint is an approximately 3mm wide groove with a
skid resistance of wearing course skid resistance of wearing course in a bituminous pavement is contributed by macro texture which implies the
sub-base for concrete carriageway - non-strength provider essentially sub-base for a concrete carriageway is provided for the below reasonsi it
q sand layer vs cement sand used as bedding of precast concrete paving units cement sand is a mixture of sand and cement and it behaves as a cohesive
road base vs base course in flexible carriageway roadbase is the most significant structural layer in bituminous pavement its designed to take up the
q purpose of tar in bituminous materialstar is usually incorporated in bituminous materials due to the below reasonsi blending of tar with
q purpose of using capping layers in pavement constructionwhen california bearing ratio of subgrade is checked to be below a specific percentage for
q pumping at joints in concrete carriagewaypumping at joints in concrete carriageway takes place in the presence of the below factorsi
q optimum binder content in bituminous pavementamount of binder to be added to a bituminous mixture cant be too excessive or too little principle of
q what is oil interceptors oils and grease are usually found in stormwater runoff from catchments they come from spillage and leakage of fuels
q necessity of air voids in bituminous pavementif the presence of air voids is too high it results in an increase of permeability of bituminous
q what do you mean by internal fictionabsorptive materials have some elastic fibrous or porous structures that would be extended and compressed at
q explain about viscous flow lossabsorptive material comprises interconnected voids and pores into which sound energy will propagate when sound waves
q explain about noise absorptive materialsthe fundamental mechanism of noise absorptive material is to change the acoustic energy into heat energy
mortar mechanism vs stone contact mechanism in bituminous materials stone contact mechanism applies to well graded aggregates coated with bitumen for
q explain the mechanism of compaction by pavermechanism of compaction by paver steel-wheeled roller and pneumatic tire rollers paver steel-wheeled
q local vehicle parapet strong enough to contain vehiclesmajority of local parapets are 11m high in addition they are designed to resist impact from
q kerb overflow weirs ndash horizontal bars vs vertical barsoverflow weirs must be provided for steep roads longitudinal gradientgt5 flat roads
high temperature in laying bituminous pavement generally bituminous materials are also broadly categorized into two types viz bitumen mcadamsand
high-yield steel vs mild steel as road reinforcement high yield steel is the preferred material for the reinforcement of concrete carriageway due to