Detailing & Codes

Consider the following statements $(P)$ and $(Q)$ : $(P):$ Fly ash and ground granulated blast furnace slag can be used as mineral admixtures in concrete. (Q): As per IS 456:2000, the minimum moist curing period becomes...

Concrete of characteristic strength 30 MPa is required. If 40 specimens of concrete cubes are to be tested, the minimum number of specimens having at least 30 MPa strength should be

M20 concrete as per IS 456: 2000 refers to concrete with a design mix having _______.

Creep of concrete under compression is defined as the _________.

A reinforced concrete $$(RC)$$ beam with width of $$250$$ $$mm$$ and effective depth of $$400$$ $$mm$$ is reinforced with $$Fe415$$ steel. As per the provisions of $$IS$$ $$456$$ - $$2000,$$ the minimum and maximum amoun...

For $$M25$$ concrete with creep coefficient of $$1.5,$$ the long-term static modulus of elasticity (expressed in $$MPa$$) as per provisions of $$IS:$$ $$456-2000$$ is ______________

The development length of a deformed reinforcement bar can be expressed as $$\left( {1/k} \right)\left( {\phi {\sigma _s}/{\tau _{bd}}} \right).$$ From the $$IS:$$ $$456$$-$$2000,$$ the value of $$k$$ can be calculated a...

While designing, for a steel column of $$Fe250$$ grade, a base plate resting on a concrete pedestal of $$M20$$ grade, the bearing strength of concrete (in $$N/m{m^2}$$) in limit state method of design as per $$IS:$$ $$45...

The flexural tensile strength of M25 grade of concrete, in N/mm 2 , as per IS:456-2000 is __________.

The modulus of elasticity, E = 5000$$\sqrt{{\mathrm f}_\mathrm{ck}}$$ where f ck is the characteristic compressive strength of concrete, specified in IS:456-2000 is based on

For a beam of cross-section, width $$= 230$$ $$mm$$ and effective depth $$= 500$$ $$mm,$$ the number of rebars of $$12$$ $$mm$$ diameter required to satisfy minimum tension reinforcement requirement specified by $$IS:$$...

As per $$IS$$ $$456:2000$$ for $$M20$$ grade concrete and plain barsin tension the design bond stress $${\tau _{bd}} = 1.2\,\,MPa.$$ Further, $$IS$$ $$456:2000$$ permits this design bond stress value to be increased by $...

The cross-section of a thermo-mechanically treated (TMT) reinforcing bar has

Consider a reinforcing bar embedded in concrete. In a marine environment this bar undergoes uniform corrosion, which leads to deposition of corrosion products on its surface and an increase in apparent volume of the bar....

In the design of a reinforced concrete bean the requirement for bond is not getting satisfied. The economical option to satisfy the requirement for bond is by

A reinforced concrete structure has to be constructed along a sea coast. The minimum grade of concrete to be used as per IS: 456-2000 is

Consider the following statements: I. Modulus of elasticity concrete increases with increase in compressive strength of concrete. II. Brittleness of concrete increases with decrease in compressive strength of concrete. I...

As per $$IS:$$ $$456$$-$$2000,$$ consider the following statements: $$1.$$ The modular ratio considered in the working stress method depends on the type of steel used. $$2.$$ There is an upper limit on the nominal shear...

The flexural strength of M30 concrete as per IS: 456-2000 is

Modulus of elasticity of M25 grade concrete in MPa is

The minimum area of tension reinforcement in a beam shall be greater than

If $$\phi \, = \,$$ nominal diameter of reinforcing bar, $${f_s}\, = $$ compressive stress in the bar and $${f_{bd}}\, = $$ design bond stress of concrete, the anchorage length, $${L_a}$$ of straight bar in compression i...

The modulus of elasticity of concrete mix M25 is