TB 142 - Open Screen Covers For Storm Water Catch Basin

Question 1

What is the purpose of the screen covers on the curb openings?

Answer 1

Prevent trash from entering storm drain system

Question 2

To prevent localize pooling, the screens unlock (locking mechanism) and swings open during major storm events when water level reaches what height of the screen to allow water and debris in?

Answer 2

1/2 of the screen height

Question 3

How many types of screens are installed within the city?

Answer 3

2 types

Question 4

Which type has a screen plate perpendicular to the screen and requires an upward motion (pry action) by a straight object to disengage locking mechanism and nameplate riveted to screen?

Answer 4

Type 1

Question 5

Which screen type has a screen plate which is parallel to the screen and requires a horizontal straight push in (poke action) to disengage locking mechanism, the name plate is stenciled on the screen?

Answer 5

Type 2

Question 6

For type 1 screens, use a screwdriver through a screen hole approximately how far from bottom edge of screen and use an upward motion (lift straight) to disengage locking mechanism?

Answer 6

1/3

Question 7

For type 2 screens, use a screwdriver through a screen hole approximately how far from bottom edge of screen using a horizontal motion (push in) to disengage locking mechanism?

Answer 7

1/3