50 KPa is equivalent to: OA 5x 10°6 N/m^2 ) B) 5 x 10^5 N/m^2 O95x 10°3 N/m^2 O D) 5x 10^4 N/m^2 Concrete is required for a plain concrete pavement to be constructed in Southern Alberta. The pavement will be exposed to freezing, thawing, and deicers. If aggregates with a nominal maximum size of 20 mm are used, what is the minimum cement content per cubic meter of concrete as per the CSA Standard? OA) 320 kg B) 335 kg OO 390 kg OD) 420 kg During Lab 5, the relative density of a coarse aggregate sample was determined. The sample of coarse aggregate was towel dryed to represent this moisture state: OA OD B) Wet OO SSD ODI Air Dry When performing the slump test, each layer of concrete is rodded times as per CSA specifications:

50 KPa is equivalent to: OA 5x 10°6 N/m^2 ) B) 5 x 10^5 N/m^2 O95x 10°3 N/m^2 O D) 5x 10^4 N/m^2 Concrete is required for a plain concrete pavement to be constructed in Southern Alberta. The pavement will be exposed to freezing, thawing, and deicers. If aggregates with a nominal maximum size of 20 mm are used, what is the minimum cement content per cubic meter of concrete as per the CSA Standard? OA) 320 kg B) 335 kg OO 390 kg OD) 420 kg During Lab 5, the relative density of a coarse aggregate sample was determined. The sample of coarse aggregate was towel dryed to represent this moisture state: OA OD B) Wet OO SSD ODI Air Dry When performing the slump test, each layer of concrete is rodded times as per CSA specifications:

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 17P

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Similar questions

2. You are asked to design a new flexible pavement structure for an existing road that will be totally replaced. You are provided with the following borehole results: a) Existing (Old) HMA - 135 mm b) Existing (Old) Granular A Base - 170 mm c) Existing (Old) Granular B Subbase - 340 mm d) Gravelly Silty Sand (Till) Subgrade (25 % 5-75 um) What is the current GBE for the existing pavement structure? What is the GBE for the same pavement structure when it was newly constructed?
B. A rigid pavement with a 10-inch slab thickness, 90 percent reliability, E. = 4 million Ib/in?, 600 lb/in? modulus of rupture, 150 lb/in³ modulus of subgrade reaction, a 2.8 load transfer coefficient, initial PSI of 4.8, final PSI of 2.5, overall standard deviation of 0.35, and a drainage coefficient of 0.8 is designed. The pavement's design life is 20 years. The three-lane road is built for vehicles with one 20,000-pound single axle, one 26,000-pound tandem axle, and one 34,000-pound triple axle. Calculate the projected daily truck traffic on the three lanes
Fill in the following blanks: 1. . . is a collapse of pavement structure or a breakdown of one or more pavement components. 2. For soils that have particle sizes between 3. The thickness design of flexible pavement is influenced by the 4. The scale Present Serviceability Index (PSI) ranges from .... considered as sand. 5. The traffic load is determined in terms of a single-axle load applied to the pavement on two sets of dual tires which is ... lb.
B. A rigid pavement with a 10-inch slab thickness, 90 percent reliability, E. = 4 million lb/in², 600 lb/in² modulus of rupture, 150 lb/in³ modulus of subgrade reaction, a 2.8 load transfer coefficient, initial PSI of 4.8, final PSI of 2.5, overall standard deviation of 0.35, and a drainage coefficient of 0.8 is designed. The pavement's design life is 20 years. The three-lane road is built for vehicles with one 20,000-pound single axle, one 26,000-pound tandem axle, and one 34,000-pound triple axle. Calculate the projected daily truck traffic on the three lanes.
07. Determine Structural Number and terminal serviceability index value of flexible pavement. Given B and G, value for 32-kip tandem-axle loads. B= 0,4 G= -0.22
12. Refer to Figure II-1 attached. A flexible pavement is to be evaluated according to the AASHTO 1972 design guide. The existing pavement has a weighted structural number=3.4, a regional factor=2.0, and a soil support value=4.5. What would be the approximated number of daily equivalent 18-kip axles to be allowed on this road for a 20-year analysis period?a. 10b. 33c. 100d. 1490
Write the significance of each layer of flexible pavement in a single line. B) Describe the one most important factor of causing failure of highway subgrade
Pavement Design and Analysis - Design a HMA pavement structure for a 6-lane divided urban highway using the AASHTO method to accommodate the traffic loads and conditions as follows. Give two alternative layer thickness combinations.
Q:Discuss various tests used for the quality of aggregate used in flexible pavements.
A flexible pavement is designed to last 10 years to withstand truck traffic that consists only of trucks with two 18-kip single axles. The pavement is designed for a soil CBR of 10, an initial PSI of 5.0, a TSI of 2.5, an overall standard deviation of 0.40 and a reliability of 90%, and the structural number was determined to be 6. Determine the number of daily trucks traveling in the peak direction. 150,814 B 75,407 C) 37,704 18,852
A rigid pavement is designed with a 11-inch slab, an E_c of 6 million Ib/in^2, a concrete modulus of rupture of 432 Ib/in^2, a load transfer coefficient of 3.0, an initial PSI of 4.50, and a TSI of 2.5. The overall standard deviation is 0.56, the modulus of subgrade reaction is 190 Ib/in^3, and a reliability of 90% is used along with a drainage coefficient of 0.87. The pavement is designed assuming that traffic is composed entirely of trucks (50 per day). Each truck has one 20-kip single axle and one 42-kip tandem axle (the effect of all other vehicles is ignored). A section of this road is to be replaced (due to different subgrade characteristics) with a flexible pavement having a SN of 5 and is expected to last the same number of years as the rigid pavement. What is the assumed soil resilient modulus? (Assume that all other factors are the same as for the rigid pavement). Please report your answer as a decimal in units of Ib/in^2. For example, report 3000.6 Ib/in^2 as 3000.6.
Overall standard deviation, S, Design serviceability loss, APSI 10 5.0 99.9 0.2 99 1.0 0.4 0.5 0.6 90 0.5 0.1 0.05 1.5 2.0 80 70 2.5 60 3.0 50 9 87 65 4 6.5 5.5 4.5 3.5 2 1 Eхample: 2.5 1.5 W18 = 5 x 106 Design structural number, SN R = 95% S, = 0.35 M = 5000 Ib/in² APSI = 1.9 Solution: SN = 5.0