The SN a value of Flexible pavement goes up if the strength of subgrade goes up

Question

The SN a value of Flexible pavement goes up if the strength of subgrade goes up rest of the data remaining the same: True False The cost of building a road goes down if the Reliability goes up True False The maintenance cost of a road goes down as reliability increases True False The common practice of constructing an AC overlay on a PCC road is: Just clean it up and place AC Seal all cracks on the PCC and place AC Crush the PCC into aggregates, compact into a base and place AC Put a layer of gravel over PCC and place AC The use of reinforcement in JRCP an CRCP Resist bending stresses Resist shearing stression To control shrinkage stresses To resist thermal stresses CBR 4 converted into Mr is 8000 psi 4000 psi 5000 psi 6000 psi

Explanation / Answer

20. true

thickness index (sn) is the sum of strength of all the layers

if the stength of subgrade goes up then automatically thickness index value get increased

21. false

if we need reliabilty while constructing a road , we have to use quality materials, for maintaining strength of layers, then automatically cost get increased up

22. true

if reliabity time is more , then less maintainence cost is required

23. option a

An asphalt overlay is resurfacing that provides a brand-new appearance for less cost.

24.option b

to resists shearing stress is the correct answer reinfocement controls the cracks in shearing region

25.option b

4000 psi

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.