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Tie bars of 12 mm diameter are to be provided in a concrete pavement slab. The working tensile stress of the tie bars is 230 MPa, the average bond strength between a tie bar and concrete is 2 MPa, and the joint gap between the slabs is 10 mm.0 AnswerAn isolated concrete pavement slab of length L is resting on a frictionless base. The temperature of the top and bottom fibre of the slab are Tt and Tb, respectively. Given: the coefficient of thermal expansion = α and the elastic modulus = E. Assuming Tt > Tb and the unit weight of concrete as zero, the maximum thermal stress is calculated as0 Answer Using limit state method and neglecting the self weight of base plate and steel column, the length of a side of the base plate to be provided is (GATE-CIVIL-Engg-2018)1 AnswerThree slabs are joined together as shown in the figure. There is no thermal contact resistance at the interfaces. The center slab experiences a non-uniform internal heat generation with an average value equal to 10000 Wm−3 , while the left and right slabs have no internal heat generation. All slabs have thickness equal to 1 m and thermal conductivity of each slab is equal to 5 Wm−1K −1 . The two extreme faces are exposed to fluid with heat transfer coefficient 100 Wm−2 K −1 and bulk temperature 30 oC as shown. The heat transfer in the slabs is assumed to be one dimensional and steady, and all properties are constant. If the left extreme face temperature T1 is measured to be 100 oC, the right extreme face temperature T2 is ___________oC.0 Answerthe axial load carrying capacity of the column (in kN, up to one decimal place), is ______ (GATE-CIVIL-Engg-2018)1 AnswerIn the engineering stress-strain curve for mild steel, the Ultimate Tensile Strength (UTS) refers to1 AnswerWhen a specimen of M25 concrete is loaded to a stress level of 12.5 MPa, a strain of 500×106 is recorded. If this load is allowed to stand for a long time, the strain increases to 1000×106 .0 AnswerShear strength of rock joint is NOT dependent on0 AnswerA metallic rod of diameter 0 d is subjected to the tensile test. The engineering stress and the true stress at fracture are 800 MPa and 900 MPa, respectively. The ratio of the rod diameter at fracture f d to the initial diameter 0 d is ______ (round off to 2 decimal places)0 AnswerA tapered circular rod of diameter varying from 20 mm to 10 mm is connected to another uniform circular rod of diameter 10 mm as shown in the following figure. Both bars are made of same material with the modulus of elasticity, E = 2x105 MPa. When subjected to a load P = 30π kN, the deflection at point A is _______________ mm. - gate civil 2017 1 AnswerThe cause of short column effect, during seismic occurrence, is due to0 AnswerTwo 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? (GATE-CIVIL-Engg-2018)1 AnswerThe compressive strength of M-25 concrete is (GATE-Architecture-Planning-2018) 1 AnswerAn RCC beam of rectangular cross section has factored shear of 200 kN at its critical section. Its width b is 250 mm and effective depth d is 350 mm. (GATE 2018 Civil engg)0 AnswerIn stress strain curve of mild steel Ultimate Tensile Stress is1 AnswerWhat you mean by porous concrete?1 AnswerIn the structure shown in the figure, bars AB and BC are made of identical material and have circular cross-sections of 10 mm radii. The yield stress of the material under uniaxial tension is 280 MPa. Using the von Mises yield criterion, the maximum load along the z- direction (perpendicular to the plane of paper) that can be applied at C, such that AB does not yield is _____ N (round off to the nearest integer).0 AnswerIf a small concrete cube is submerged deep in still water in such a way that the pressure exerted on all faces of the cube is p, then the maximum shear stress developed inside the cube is -Civil Engineering-gate-20121 AnswerThe deformation in concrete due to sustained loading is (GATE-CIVIL-Engg-2018)1 AnswerThe frequency distribution of the compressive strength of 20 concrete cube specimens is given in the table.(GATE Civil engg 2018)1 Answer
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