Footing Columns Beams And Slabs Practice Questions

As per IS 456:2000 provisions for two-way slabs with continuous edges, the longitudinal steel reinforcement to be provided in the edge strip is based on

The design shear strength of a reinforced concrete rectangular beam with a width of $250\text{mm}$ and an effective depth of $500\text{mm}$ , is $0.3\text{MPa}$ . The torsional moment capacity of the section (in kN.m) under pure torsion, as per IS 456:2000, is ______ (round off to one decimal place).

A concrete column section of size $300 \mathrm{~mm} \times 500 \mathrm{~mm}$ as shown in the figure is subjected to both axial compression and bending along the major axis. The depth of the neutral axis $\left(x_{u}\right)$ is 1.1 times the depth of the column, as shown. The maximum compressive strain $\left(\varepsilon_{\mathrm{c}}\right)$ at highly compressive extreme fiber in concrete, where there is no tension in the section, is ________ $\times 10^{-3}$ (rounded off to 2 decimal places)

The following figure shows the arrangement of formwork for casting a cantilever RC beam. The correct sequence of removing the Shores/Props is

A slab panel with an effective depth of $250 \mathrm{~mm}$ is reinforced with $0.2 \%$ main reinforcement using $8 \mathrm{~mm}$ diameter steel bars. The uniform center-to-center spacing (in $\mathrm{mm}$ ) at which the $8 \mathrm{~mm}$ diameter bars are placed in the slab panel is _____ (rounded off to the nearest integer).

A simply supported, uniformly loaded, two-way slab panel is torsionally unrestrained. The effective span lengths along the short span ( $x$ ) and long span (y) directions of the panel are $l_{x}$ and $l_{y}$ respectively. The design moments for the reinforcements along the $x$ and $y$ directions are $M_{u x}$ and $M_{u y}$ respectively. By using Rankine-Grashoff method, the ratio $M_{u x}$ ' $\mathrm{M}_{\mathrm{uy}}$ is proportional to

Various stresses in jointed plain concrete pavement with slab size of $3.5 \mathrm{~m} \times 4.5 \mathrm{~m}$ are denoted as follows: Wheel load stress at interior $=S_{w l}^{i}$ Wheel load stress at edge $=S_{w l}^{e}$ Wheel load stress at corner $=S_{w l}^{c}$ Warping stress at interior $=S_{t}^{i}$ Warping stress at edge $=s_{t}^{e}$ Warping stress at corner $=S_{t}^{c}$ Frictional stress between slab and supporting layer $=S_{f}$ The critical stress combination in the concrete slab during a summer midnight is

With regard to the shear design of RCC beams, which of the following statements is/are TRUE?

Read the following statements relating to flexure of reinforced concrete beams: I. In over-reinforced sections, the failure strain in concrete reaches earlier than the yield strain in steel. II. In under-reinforced sections, steel reaches yielding at a load lower than the load at which the concrete reaches failure strain. III. Over-reinforced beams are recommended in practice as compared to the under-reinforced beams. IV. In balanced sections, the concrete reaches failure strain earlier than the yield strain in tensile steel. Each of the above statements is either True or False. Which one of the following combinations is correct?

A combined trapezoidal footing of length L supports two identical square columns ( $P_{1}$ and $P_{2}$ ) of size 0.5m x 0.5m, as shown in the figure. The columns $P_{1}$ and $P_{2}$ carry loads of 2000 kN and 1500 kN, respectively. If the stress beneath the footing is uniform, the length of the combined footing L (in m,round off to two decimal places) is _____

A rectangular cross-section of a reinforced concrete beam is shown in the figure. The diameter of each reinforcing bar is 16 mm. The values of modulus of elasticity of concrete and steel are $2.0 \times 10^{4} \mathrm{MPa} \text { and } 2.1 \times 10^{5} \mathrm{MPa}$ , respectively. The distance of the centroidal axis from the centerline of the reinforcement (x) for the uncracked section (in mm,round off to one decimal place) is ____________

The singly reinforced concrete beam section shown in the figure (not drawn to the scale) is made of M25 grade concrete and Fe500 grade reinforcing steel. The total crosssectional area of the tension steel is 942 $mm^2$ . As per Limit State Design of IS 456 : 2000, the design moment capacity (in kNm round off to two decimal places) of the beam section, is __________

The cross-section of the reinforced concrete beam having an effective depth of 500 mm is shown in the figure (not drawn to the scale). The grades of concrete and steel used are M35 and Fe550, respectively. The area of tension reinforcement is 400 $mm^2$ . It is given that corresponding to 0.2% proof stress, the material safety factor is 1.15 and the yield strain of Fe550 steel is 0.0044. As per IS 456:2000, the limiting depth (in mm, round off to the nearest integer) of the neutral axis measured from the extreme compression fiber, is ________.

A structural member subjected to compression, has both translation and rotation restrained at one end, while only translation is restrained at the other end. As per IS 456 : 2000, the effective length factor recommended for design is

Two rectangular under-reinforced concrete beam sections X and Y are similar in all aspects except that the longitudinal compression reinforcement in section Y is 10% more. Which one of the following is the correct statement?

A column of height h with a rectangular cross-section of size ax2a has a buckling load of P. If the cross-section is changed to 0.5a x 3a and its height changed to 1.5h, the buckling load of the redesigned column will be

An RCC short column (with lateral ties) of rectangular cross section of 250 mm x 300 mm is reinforced with four numbers of 16 mm diameter longitudinal bars. The grades of steel and concrete are Fe415 and M20, respectively. Neglect eccentricity effect. Considering limit state of collapse in compression (IS 456 : 2000), the axial load carrying capacity of the column (in kN, up to one decimal place), is ______

A singly-reinforced rectangular concrete beam of width 300 mm and effective depth 400 mm is to be designed using M25 grade concrete and Fe500 grade reinforcing steel. For the beam to be under-reinforced, the maximum number of 16 mm diameter reinforcing bars that can be provided is

A reinforced-concrete slab with effective depth of 80 mm is simply supported at two opposite ends on 230 mm thick masonry walls. The centre-to-centre distance between the walls is 3.3 m. As per IS 456 : 2000, the effective span of the slab (in m, up to two decimal places) is ______