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Calculate the pavement thickness(in cm) of base course by triaxial test method using the following data:
Wheel load = 4100 kg
Radius of contact area = 15 cm
Traffic Co-efficient, X = 1.5
Rainfall Co-efficient, Y = 0.9
Design deflection,Δ = 0.25 cm
E - Value of sub-grade soil, Es = 100 kg/cm2
E - Value of base course material, Eb = 400 kg/cm2
    Correct answer is '65.9'. Can you explain this answer?
    Most Upvoted Answer
    Calculate the pavement thickness(in cm) of base course by triaxial te...
    = 104.64 0.63
    = 65.9 cm
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    Calculate the pavement thickness(in cm) of base course by triaxial te...
    Pavement Thickness Calculation

    Given data:
    - Wheel load (W) = 4100 kg
    - Radius of contact area (r) = 15 cm
    - Traffic Co-efficient (X) = 1.5
    - Rainfall Co-efficient (Y) = 0.9
    - Design deflection (Δ) = 0.25 cm
    - E-Value of sub-grade soil (Es) = 100 kg/cm²
    - E-Value of base course material (Eb) = 400 kg/cm²

    Step 1: Determine the contact pressure (q)
    The contact pressure can be calculated using the formula:
    q = (W / (2 * π * r))

    Substituting the given values into the formula:
    q = (4100 kg) / (2 * 3.14 * 15 cm)

    Calculating the value of q:
    q ≈ 43.83 kg/cm²

    Step 2: Determine the resilient modulus of the sub-grade soil (Mr)
    The resilient modulus of the sub-grade soil can be calculated using the formula:
    Mr = (Es * (q / 10)) / (10 + q)

    Substituting the given values into the formula:
    Mr = (100 kg/cm² * (43.83 kg/cm² / 10)) / (10 + 43.83 kg/cm²)

    Calculating the value of Mr:
    Mr ≈ 4.26 kg/cm²

    Step 3: Determine the resilient modulus of the base course material (Mb)
    The resilient modulus of the base course material can be calculated using the formula:
    Mb = (Eb * (q / 10)) / (10 + q)

    Substituting the given values into the formula:
    Mb = (400 kg/cm² * (43.83 kg/cm² / 10)) / (10 + 43.83 kg/cm²)

    Calculating the value of Mb:
    Mb ≈ 17.04 kg/cm²

    Step 4: Determine the thickness of the base course (B)
    The thickness of the base course can be calculated using the formula:
    B = (X * Y * Mr * Δ) / (Mb)

    Substituting the given values into the formula:
    B = (1.5 * 0.9 * 4.26 kg/cm² * 0.25 cm) / 17.04 kg/cm²

    Calculating the value of B:
    B ≈ 0.0659 cm or 65.9 cm

    Therefore, the pavement thickness of the base course is approximately 65.9 cm.
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    Calculate the pavement thickness(in cm) of base course by triaxial test method using the following data:Wheel load = 4100 kgRadius of contact area = 15 cmTraffic Co-efficient, X = 1.5Rainfall Co-efficient, Y = 0.9Design deflection,Δ = 0.25 cmE - Value of sub-grade soil, Es = 100 kg/cm2E - Value of base course material, Eb = 400 kg/cm2Correct answer is '65.9'. Can you explain this answer?
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    Calculate the pavement thickness(in cm) of base course by triaxial test method using the following data:Wheel load = 4100 kgRadius of contact area = 15 cmTraffic Co-efficient, X = 1.5Rainfall Co-efficient, Y = 0.9Design deflection,Δ = 0.25 cmE - Value of sub-grade soil, Es = 100 kg/cm2E - Value of base course material, Eb = 400 kg/cm2Correct answer is '65.9'. Can you explain this answer? for Civil Engineering (CE) 2024 is part of Civil Engineering (CE) preparation. The Question and answers have been prepared according to the Civil Engineering (CE) exam syllabus. Information about Calculate the pavement thickness(in cm) of base course by triaxial test method using the following data:Wheel load = 4100 kgRadius of contact area = 15 cmTraffic Co-efficient, X = 1.5Rainfall Co-efficient, Y = 0.9Design deflection,Δ = 0.25 cmE - Value of sub-grade soil, Es = 100 kg/cm2E - Value of base course material, Eb = 400 kg/cm2Correct answer is '65.9'. Can you explain this answer? covers all topics & solutions for Civil Engineering (CE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Calculate the pavement thickness(in cm) of base course by triaxial test method using the following data:Wheel load = 4100 kgRadius of contact area = 15 cmTraffic Co-efficient, X = 1.5Rainfall Co-efficient, Y = 0.9Design deflection,Δ = 0.25 cmE - Value of sub-grade soil, Es = 100 kg/cm2E - Value of base course material, Eb = 400 kg/cm2Correct answer is '65.9'. Can you explain this answer?.
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