2. Auniform concrete slab is to be attached to two rods whose lowers ends are initially at the same level. What is the required area, in mm?, of aluminum rod so that slab will remain level after it is attached to the rods? Wi4 m Aluminum E = 72 GPa Steel A= 8V mm 2 E = 200 GPa Wi4 m -Y/40 m- Y/200 m

2. Auniform concrete slab is to be attached to two rods whose lowers ends are initially at the same level. What is the required area, in mm?, of aluminum rod so that slab will remain level after it is attached to the rods? Wi4 m Aluminum E = 72 GPa Steel A= 8V mm 2 E = 200 GPa Wi4 m -Y/40 m- Y/200 m

Traffic and Highway Engineering

5th Edition

ISBN:9781305156241

Author:Garber, Nicholas J.

Publisher:Garber, Nicholas J.

Chapter20: Design Of Rigid Pavements

Section: Chapter Questions

Problem 12P

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A uniform concrete slab is to be attached to two rods whose lowers ends are initially at the same level. What is the required area, in mm², of aluminum rod so that slab will remain level after it is attached to the rods? 4 m Aluminum E = 72 GPa Steel A= 96 mm < E = 200 GPa 4 m 3 m- 0.50 m
The modulus of elasticity of "reinforced concrete" in RC design, is O A. 420 GPa B. 200 GPa C. None () D. 220 GPa
SIT. B: Determine the tensile steel ratio of a given conditions if concrete strength f'. = 28 MPa and steel yield strength fy 4. if the tensile strain is Es = fy/Es upon crushing of concrete at a strain of 0.003. C. 0.02833 A. 0.01567 B. 0.02161 D. 0.02125 if the tensile strain is limited to 0.004 upon crushing of concrete at a strain of 0.003. A. 0.01567 B. 0.01548 5. 6. Minimum as required by NSCP 2015. C. 0.00313 D. 0.00405 A. 0.00333 B. 0.00276 = 420 MPa. C. 0.02778 D. 0.02064 uniformly
The section of a solid one-way slab is shown in the figure. The concrete is a normal density concrete with a unit weight of 2400 kg/m³ . The reinforcing steel used has a strength of fy = 276 MPa. B1 B2 Вз 4m 1 8m 1. Calculate the minimum thickness of slab B1 in millimeters. 2. Calculate the minimum required thickness of slab B2 in millimeters. 3. Calculate the minimum required thickness of slab B3 in millimeters. SNOIS SNO
c) Find the stresses in the concrete and the reinforcement for the following applied moments: (i) – M1= 35kN.m and (ii) – 120kN.m Cross-section: width height Modulus of elasticity: concrete reinforcement Reinforcement: depth area b:= 300-mm h := 520-mm Ec:= 30-GPa Es:= 200-GPa d:= 460-mm As 1470-mm 2 h d b
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(1) (2) steel stress-strain Curve Es= Esteel = what is f db #3 #4 #5 #6 #7 #8 #9 #10 ksi 0.005 Ab FOR Grade 60 steel. E Ey = when fs = 45 ksi lbs/ft_ when Es=0.005
REINFORCED CONCRETE D = 28 mm diameter size
A RECTANGULAR ALUMINUM BLOCK IS 40mm LONG IN THE Y DIRECTION, 20mm WIDE IN THE Z DIRECTION AND 25mm THICK IN THE X DIRECTION. IT IS SUBJECTED TO A TRIAXIAL LOADING CONSISTING OF A UNIFORMLY DISTRIBUTED FORCE OF Px=3 (COMPRESSION), Py=6 (TENSION) AND Pz=9 (COMPRESSION) IN THE X, Y AND Z DIRECTIONS RESPECTIVELY. IF THE POISSON’S RATIO = 1/4 & E = 70 GPa, DETERMINE THE STRAINS IN THE X, Y AND Z DIRECTIONS. ALSO DETRMINE A SINGLE DISTRIBUTED FORCE IN THE Y DIRECTION THE WOULD PRODUCE THE SAME X DEFORMATION AS THE ORIGINAL.
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A RECTANGULAR ALUMINUM BLOCK IS 40mm LONG IN THE Y DIRECTION,20mm WIDE IN THE Z DIRECTION AND 25mm THICK IN THE XDIRECTION. IT IS SUBJECTED TO A TRIAXIAL LOADING CONSISTING OF AUNIFORMLY DISTRIBUTED FORCE OF Px=3kN (COMPRESSION), Py=4kN(TENSION) AND Pz=7kN (COMPRESSION) IN THE X, Y AND Z DIRECTIONSRESPECTIVELY. IF THE POISSON’S RATIO = 1/4 & E = 70 GPa,DETERMINE THE STRAINS IN THE X, Y AND Z DIRECTIONS. ALSODETRMINE A SINGLE DISTRIBUTED FORCE IN THE Y DIRECTION THEWOULD PRODUCE THE SAME X DEFORMATION AS THE ORIGINAL.
A copper flat measuring 60mmx30mm is brazed to another 60mmx60mm mild steel flat as shown. If the combination is heated through 120 ℃, determine the stress produced in each of the bar. Concrete: ? = 18.5x10^-6/℃, ?? = 110 GN/?2 Steel: ? = 12x10^-6/℃, ?? = 220 GN/?2 Length of each flat = 400 mm.