CPII Road and Pavement Inspection 3

Question 1

During a bridge approach inspection, a bump at the bridge deck joint most commonly indicates:

Accepted Answer

Settlement or erosion of the approach fill behind the abutment

Answer

Approach bumps typically result from settlement or wash-out of the embankment fill behind the abutment, creating a void beneath the approach slab.

Question 2

Which international roughness index (IRI) threshold generally classifies a road as 'Poor' for a principal arterial?

Accepted Answer

IRI > 170 in/mi

Answer

FHWA uses IRI > 170 in/mi as the 'Poor' threshold for principal arterials in the Highway Performance Monitoring System (HPMS).

Question 3

What is the primary purpose of a proof roll during subgrade inspection before paving?

Accepted Answer

Identify soft or unstable subgrade areas by observing deflection under a loaded vehicle

Answer

A proof roll uses a fully loaded dump truck or roller to identify areas where the subgrade pumps, deflects, or weaves, indicating insufficient bearing capacity.

Question 4

Corrugation (washboarding) in asphalt pavement is most associated with:

Accepted Answer

High binder content combined with traffic instability at low speeds or stops

Answer

Corrugation forms as ripple-like waves perpendicular to traffic caused by unstable mix or excessive binder where traffic accelerates or brakes repeatedly.

Question 5

Which standard governs distress identification for concrete pavement in a PCI survey?

Accepted Answer

ASTM D5340

Answer

ASTM D5340 covers the PCI procedure for airport and concrete pavement, while ASTM D6433 covers asphalt; for roads, D5340 is referenced for rigid pavement.

(CPII) Certified Public Infrastructure Inspector Practice Test

(CPII) Certified Public Infrastructure Inspector Practice Test

CPII Road and Pavement Inspection 3