TB 142 Opening Screen Covers For Storm Water Catch Basin

Question 1

TB 142 Opening Screen Covers For Storm Water

To prevent localize pooling, the screens locking mechanisms are designed to swing open during major storm events when the water level reaches ____ of the screen height and allow any water or debris in. The screen then closes and locks once the water subsides.

Answer 1

half

Question 2

TB 142 Opening Screen Covers For Storm Water

Type I has a screen plate perpendicular to the screen and requires an upward motion (pry action) by a straight object to disengage the locking mechanism which has the nameplate riveted onto the screen.

Type II has a screen plate which is parallel to the screen and requires a horizontal straight push in motion (poke action) to disengage the locking mechanism, the nameplate is stenciled onto the screen.

Answer 2

reference

Question 3

TB 142 Opening Screen Covers For Storm Water

Type 1 - enter straight object, like screwdriver, 1/3 from bottom of the screen. Use upward motion of handle to cause tip to go down and open drain.

Type 2 - enter straight object, like screwdriver, 1/3 from bottom of the screen. Push straight in to open.

Answer 3

reference

Question 4

Type 1 - riveted nameplate

Type II - Stenciled nameplate

Answer 4

reference