QUESTION SET TWO
◉ What are the three types of inspection? Answer: Initial, Interim
and routine
◉ How many times per foot should loop wires be twisted? Answer: 5
twists per foot
◉ How wide should loops be cut and at what depth? Answer: 5/16th
Wide and 1 3/4" deep
◉ what should be installed on loops wires they cross a crack or
joint? Answer: A plastic sleeve that extends 4" past the joint/crack.
◉ How should spare signal conductors be arraigned inside the box?
Answer: Spare conductors should be connected to a terminals.
unused
◉ What should happen prior and during the installation of loops
wires? Answer: 1. Clean saw cuts and remove debris by means of
sandblasting, water blasting or wire brushing
2. Do not allow vehicles to drive over open cuts
,3. Utilized plastic sleeves between joints
◉ How is loop wire required to be placed? Answer: continuously
◉ What is placed ontop of continuous loop wires? Answer: 2' long
Backer Rod
◉ What is the required wire slack amount left inside of pull box?
Answer: Minimum of 36"
◉ How long until subjected live load can be applied to anchor bolts?
Answer: Until concrete meets it required 28 day strength
◉ What type of pattern is recommended when tightening bolts?
Answer: The Star Pattern
◉ Prior to erection of traffic lights, What are the elements an
inspector is looking for? Answer: 1.Bent or damaged parts
2. damaged coatings
3. Distortions
4. defective fabrication
, ◉ What elements of a traffic light assembly should be inspected
prior to erection? Answer: 1.Posts
2. End Frames
3. Mast arms
4. Trusses
◉ How can light poles be erected? Answer: Light poles and light
supports can be assembled from the ground if they contain a short
cantilevered arms.
◉ What are the inspection types for welds? Answer: Magnetic
Particle testing (MT) and dye-penetrant (PT) testing or ultrasonic
testing
◉ What should be provided if conduit crosses a structural joint?
Answer: Metal expansion and deflection fittings
◉ What is the dimensions of the copper clad steel rods? Answer:
Rods should be 5/8th thick and 8' long.
◉ What are the size of micropiles? Answer: Typically less than 12"
◉ What is the size of driven piles? Answer: Between 12 and 36"