CTQP Structures Inspection

Question 1

What does 'form stripping time' or 'form removal time' mean in concrete bridge construction?

Accepted Answer

The minimum time after concrete placement that forms can be removed based on concrete strength

Answer

The time required to erect the formwork system

Answer

The time allotted to inspect forms before concrete is placed

Answer

The allowable time between form reuse applications

Question 2

What is 'falsework' in bridge construction?

Accepted Answer

Temporary supporting structure that supports permanent structure elements during construction until they are self-supporting

Answer

Temporary steel framing used to erect bridge girders

Answer

Formwork panels used to shape concrete deck surfaces

Answer

Temporary traffic barriers used during bridge construction

Question 3

What is the purpose of 'expansion joints' in a bridge structure?

Accepted Answer

To allow for thermal movement and prevent damage from temperature-induced expansion and contraction

Answer

To allow the bridge to expand vertically during high loads

Answer

To provide access for inspection of bridge components

Answer

To connect precast girders to the bridge deck

Question 4

What is 'post-tensioning' in prestressed concrete bridge construction?

Accepted Answer

Applying tension to steel tendons after the concrete has hardened to place the concrete in compression

Answer

Adding supplemental reinforcing steel after concrete cures

Answer

Tightening anchor bolts after bridge erection

Answer

Stressing the bridge deck after beam placement

Question 5

What document must an inspector verify is current and on-site before allowing any concrete pour on a bridge structure?

Accepted Answer

The approved mix design and current concrete plant certification

Answer

The contractor's payroll records

Answer

The equipment maintenance log

Answer

The environmental permit only

Question 6

What is the function of a 'bearing pad' in a bridge structure?

Accepted Answer

A device that transfers loads from the superstructure to the substructure while accommodating rotation and movement

Answer

A pad placed under bridge workers for safety during construction

Answer

A rubber pad installed between deck panels during erection

Answer

A pad used to level the formwork before concrete placement