Fineness test of cement give us an estimate of
determine the fineness of cement by passing through 90um sieve.
The minimum percentage of steel in R.C.C.slab using mild steel reinforcement in given by
The criteria for minimum percentage of steel for various RCC members are as follows: 1.Slab:- 0.12 % ———mild steel 0.15%——— HYSD bars 2.Column :- 0.8 % 3.Beams :- 0.85/fy ———rectangular beam 1.00/fy to 1.70/fy —–flanged section
To obtain very high strength concrete, it is necessary to use very fine grained
Which of the following type of lime is used for underwater constructions
Hydraulic lime (calcium oxide) provides a faster initial set and higher compressive strength than air lime and eminently hydraulic lime will set in more extreme conditions including under water
Which one of the following has least bearing capacity
Loose gravel Have more voids in it, so its bearing is less
Factor of safety is the ratio of:
Factor of safety is the ratio of yield stress and working stress
For lined canals, the freeboard measured from the :
The property of a material by which it gets permanent deformation under a load which is not recovered after removal of load is called
The property of a material by which it gets permanent deformation under a load which is not recovered after removal of load is called plasticity
The concrete having a slump of 6.5 cm, is said to be
The concrete having a slump of 6.5 cm, is said to be plastic
Capillary rise is a phenomenon that is attributed to the following property of fluid:
Capillary rise is a phenomenon that is attributed to the surface tension property of fluid:
The value of Cv for sharp edged orifice generally
The value of Cv for sharp edged orifice generally 0.98
As a cheap alternative, the fineness of cement is tested by using
As a cheap alternative, the fineness of cement is tested by using IS 90u sieve where at least 90% (by weight) should pass
The maximum permissible stress for hand driven river in axial tension is :
The maximum permissible stress for hand driven river in axial tension is 80 N/mm2
Measurement of pressure difference between two points is, generally done by using
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Measurement of pressure difference between two points is, generally done by using Different manometer
Calcium chloride added in concrete acts as:
Calcium chloride added in concrete acts as accelerator
The following document contains detailed description of all items of work excluding their quantities, along with the current rates :
The following document contains detailed description of Schedule of rates is all items of work excluding their quantities, along with the current rates
Specific gravity has a unit:
pecific gravity is a dimensionless quantity; that is, it is not expressed in units. To find the sp gr of a solid or liquid, you must know its density in kilograms per meter cubed (kg/m3) or in grams per centimeter cubed (g/cm3). Then, divide this density by the density of pure water in the same units.
To construct a massive dam the type of cement used is:
To construct a massive dam the type of cement used is low heat cement
The size of fillet weld is indicated by:
The size of fillet weld is indicated by Side of the triangle of fillet
In limit state method of design, for bars in compression in values of bond stress shall be
In limit state method of design, for bars in compression in values of bond stress shall be Increased by 25%
The main gas liberated from an anaerobic sludge digestor is
Anaerobic digestion is a collection of processes by which microorganisms break down biodegradable material in the absence of oxygen.[1] The process is used for industrial or domestic purposes to manage waste or to produce fuels. Much of the fermentation used industrially to produce food and drink products, as well as home fermentation, uses anaerobic digestion. C6H12O6 → 3CO2 + 3CH4 Methane CH 50–75% Carbon dioxide CO 25–50% Nitrogen N 0–10% Hydrogen H 0–1% Hydrogen sulfide H2S 0–3% Oxygen O 0–0%
Spacing of stirrups in a rectangular beam is :
Spacing of stirrups in a rectangular beam is increased at the centre of the beam