Traffic and Highway Engineering
5th Edition
ISBN: 9781305156241
Author: Garber, Nicholas J.
Publisher: Cengage Learning
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Chapter 20, Problem 18P
To determine
Whether the slab thickness is adequate for the tensile stresses or not according to AASHTO.
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Q- The maximum applied load on a cylindrical concrete specimen of diameter 150 mm and length
300 mm tested as per the split tensile strength test guidelines of IS 5816:1999 is 157 kN. The split
tensile strength (in MPa, round off to one decimal place) of the specimen is?
Determine the tensile steel ratio of a singly reinforced concrete beam for the following conditions using concrete strength f’c = 21 MPa and steel yield strength fy = 420 MPa.
Minimum as required by NSCP 2015. = [rmin] (5 decimal places)
The maximum applied load on a cylindrical
concrete specimen of diameter 150 mm and
length 300 mm tested as per the split tensile
strength test guidelines of IS 5816:1999 is 157 kN.
The split tensile strength (in MPa, (round off to
three decimal place) of the specimen is
Chapter 20 Solutions
Traffic and Highway Engineering
Ch. 20 - Portland cement concrete consists of what four...Ch. 20 - List and briefly describe the five main types of...Ch. 20 - What is the main requirement for the water used in...Ch. 20 - Prob. 4PCh. 20 - Prob. 5PCh. 20 - Prob. 6PCh. 20 - Prob. 7PCh. 20 - Prob. 8PCh. 20 - Prob. 9PCh. 20 - Prob. 10P
Ch. 20 - Prob. 11PCh. 20 - Prob. 12PCh. 20 - Repeat Problem 20-12, with the slab containing...Ch. 20 - Prob. 14PCh. 20 - Prob. 15PCh. 20 - Prob. 16PCh. 20 - Prob. 17PCh. 20 - Prob. 18PCh. 20 - An existing rural 4-lane highway is to be replaced...Ch. 20 - Prob. 20PCh. 20 - Prob. 21PCh. 20 - Prob. 22PCh. 20 - Prob. 23PCh. 20 - Prob. 24PCh. 20 - Prob. 25PCh. 20 - Prob. 26PCh. 20 - Prob. 27P
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- A slab with S/L = 0.40 has a thickness of 150 mm reinforced with 12 mm - diameterdeformed bars at spacing s = 200 mm on center. Assume f'c = 28 MPa and fy = 415MPa. Use clear cover of 20 mm. What is the governing steel ratio?arrow_forwardWhat would be the average compressive strength of concrete if the load at failure of the 3 trials are 55, 100 kg, 54, 800 kg, and 55, 200 kg. Diameter of the sample is 6”. a 31.1 MPa b 30.1 MPa c 30.6 MPa d 30.6 MPaarrow_forward1. At what percentage of compressive strength of concrete do the tensile cracks move farther upward a. 33% b. 50% c. 85% d. 100% e. 90% 0 5%arrow_forward
- Discuss Laboratory Shear Strength Testsarrow_forwardA reinforced concrete tie has a square cross section of 8 in. × 8 in. and is reinforced with 8 # 5 steel reinforcing bars Grade 60. If the concrete has a 28-day compressive strength of 4000 psi , calculate the cracking and factored tensile forces that can be supported by the tie.arrow_forward2. According to Section 10.2.3 of AC, the maximum usable strain at extreme concrete compression fiber shall be assumed equal to a. 0.004 b. 0.005 c. 0.003 d. 0.002 e. 0.001 f. 0.008arrow_forward
- (a) Assuming elastic behavior, why does the maximum shear stress always correspond to the neutral axis level? (b) An under-reinforced beam section is safer than an over-reinforced one. Is this a correct statement? justify your answer using a neat sketch. (c) What are the two fundamental equations/conditions in beam flexure analysis? Explain their use using neat sketches.arrow_forwardIf the compressive strength of the concrete is 4 ksi and the yield strength of steel is 60 ksi, the value of that should be used in computing the design moment strength oMn for the beam section should be 23.5 in 1.5424 0.65 0.48 0.9 3#9 14 in 26 inarrow_forwardWhat is the Split-tension test? How it is different from the Flexure Strength Test?arrow_forward
- Define the following a(Point of contra flexureb) Section modulusarrow_forward'bd . As per IS 456:2000 for M20 grade concrete and plain barsin tension the design bond stress t= 1.2 MPa Further, IS 456:2000 permits this design bond stress value to be increased by 60% for HSD bars. The stress in the HSDreinforcing steel barsin tension, a MPa. Find the required development length, La for HSD barsin terms of the bar diameter, = 360 S o.arrow_forwardThe square cross section of a reinforced concrete tie is 8 in. x 8 in., and it is reinforced with 8 # 5 steel reinforcing bars Grade 60. Calculate the cracking and calculated tensile stresses that the tie can withstand if the concrete has a 28-day compressive strength of 4000 psi.arrow_forward
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