Traffic and Highway Engineering - With Mindtap
5th Edition
ISBN: 9781305360990
Author: Garber
Publisher: CENGAGE L
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Chapter 20, Problem 12P
To determine
The maximum distance for plain concrete pavement at the contraction joints.
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calculate the maximum stress at corner of 4600 kg wheel load is applied on cement concrete pavement of thickness is 180mm?
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Chapter 20 Solutions
Traffic and Highway Engineering - With Mindtap
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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- 2. 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 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 marrow_forwardA cement concrete pavement has a thickness of 20 cm and has 2 lanes of 7,2 m with a longitudinal joint along the centre. Assuming allowable working stress of steel in tension = 1400 kg/cm², Unit weight of concrete = 2400 kg/m³, Co-efficient of friction of = 1,5. Allowable bond stress in deformed bars 24.6 kg/cm², Find the length and spacing of tie bar if diameter of bar is 1 cm. =arrow_forwardIf width of the expansion joint is 1.7 m in a cement concrete pavement. The laying temperature is 38°C and the maximum slab temperature in summer is 50°C. The coefficient of thermal expansion of concrete is 4 x 10-5 mm/mm / °C and the joint filler compresses upto 28% of the thickness. The spacing between expansion joints is S mm then Value of S is mm.arrow_forward
- Q- The width of the expansion joint is 20mm in a cement concrete pavement. The laying temperature is 20 °C and the maximum slab temperature in summer is 60 °C. The coefficient of thermal expansion of concrete is 10 x 10-6 mm/mm/ °C and the joint filler compresses upto 50% of the thickness. Find the spacing between expansion joints.arrow_forwardAssuming concrete is uncracked. Compute the bending stress in the extreme fiber of the beam of figure for bending moment 1x10°kg cm . Determine the cracking moment of the section. A = 10cm² %3D E, = 2*10°kg / cm² E = 2*10°kg / cm² %3D %3D f'. =1836kg / cm² %3D 90 cm 100 cm 40 cmarrow_forwardshow that the design thickness of a concrete Pavement slab is safe for Combined load and temperature stresses for longitudinal and conditions, given fellowling data: Design thickness = 20 Con Maximum wheel load = 4080 kg ● Impact factor - 10% . . modules of elesticity of concrete = 3x 100 kg/cm² modulus of Subgrade reaction = 6kg/cm³. Paisson's ration of Concreate = 0.2 ● • Type Slab pressure = 7 Kg/cm2 dimensions = 4.5m x 3.8m • Thermal conefficient of concrete = 8x10° per °C • Temperatore difference during the day = 0+5°C/cm Allowable flexural Strength of concrete=3skg/ ● Com 2arrow_forward
- The width of the expansion joint is 20mm in a cement concrete pavement. The laying temperature is 20 °C and the maximum slab temperature in summer is 60 °C. The coefficient of thermal expansion of concrete is 10 x 10-6 mm/ mm / °C and the joint filler compresses upto 50% of the thickness. The spacing between expansion joints should bearrow_forwardThe width of the expansion joint is 30 mm in a cement concrete pavement. The laying temperature is 30°C and the maximum slab temperature in summer is 70°C. The coefficient of thermal expansion of concrete is 10 x 10-6/°C and the joint filler compresses upto 40% of the thickness. The spacing between expansion joint should bearrow_forwardPROBLEM TO SOLVE: 600 mm 400 mm 6-25mm diam. 90 mm Using fc' = 28 MPa, Mmax = +320 kNm Determine the following: a. Cracking Moment (kNm) b. Compressive Stress felt by concrete (MPa) c. Tension Stress felt by the tension bars (MPa) d. Moment of Inertia under critical condition e. Demand Capacity Ratio of Concrete under Compression Stress f. Compression force on concrete (kN) g. Distance of the compression concrete force from the neutral axis (mm)arrow_forward
- A pre stressed concrete beam has a width of 200 mm and an overall depth of 400 mm. The permissible stresses in tension and compression due to pre- stressing alone are 4 N/mm and 25 N/mm respectively. Find the required pre- stressing force in the tendon and the eccentricity of the tendon, if a straight tendon with a constant eccentricity is to be provided in the beam. No external load or self weight effect is to be considered.arrow_forwardA concrete pavement is subject to a temperature change of AT = 70°F; a coefficient of thermal expansion a = 5.5 ×10 in./in./°F; a concrete shrinkage ɛ = 200 x106; and a granular base with C = 0.8. Determine the joint spacing for an undoweled and a doweled joint having an allowable joint opening of 0.06 and 0.02 in., respectively.arrow_forwardLA reinforced concrete beam has a width of 300 mm, an effective depth of 500 mm and is reinforced with a steel having an area of 1200 mm^2. The beam is subjected to a bending moment of 80 kN-m. If the modular ratio = 8, using WSD, Cracked Analysis. a) Determine the stress developed in the concrete.arrow_forward
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