Storm Drainage Systems Overview

A system designed to collect, convey, and discharge rainwater to a suitable location.

A device that collects rainwater from a roof and directs it to a downspout.

A pipe that carries rainwater from the roof drain to the point of disposal.

A device that collects rainwater and surface runoff from downspouts and ground surfaces, respectively.

A unit where multiple storm drainage pipes converge and connect to a single outlet pipe.

A junction box that also serves as an area drain with an open cover, allowing surface runoff to flow in.

A pipe that collects rainwater or surface runoff and conveys it to a disposal location.

A drainage system using perforated pipes to collect subsurface water and convey it to a disposal point.

An external trough on a roof that collects rainwater and directs it to a downspout.

A horizontal part of a drainage system that connects the gutter to the downspout.

A vertical pipe that carries rainwater from the leader to the drainage system.

A pit below ground level that collects rainwater, groundwater, or wastewater.

A pump that removes water from a sump.

The horizontal area of a sloped roof, as if it were flattened.

A storm drainage system designed for normal weather conditions.

The amount of rain intercepted by a pitched roof on one side is greater than the other side due to the angle of the rain.

Despite the uneven interception, the total rainfall on both sides of a pitched roof is equal to that of a flat roof.

Pipes used for carrying rainwater from aboveground, often within the interior of a building.

External pipes for rainwater drainage, typically used for low-rise buildings.

Drainage systems for rooftops, collecting rainwater to a specific discharge point.

A device within the roof drain that catches debris and prevents it from clogging the drainpipes.

Strainers designed for flat, accessible surfaces like sun decks or parking areas.

Making the connection between the roof drain and interior of the building watertight to prevent leaks.

A pipe or conductor system that collects, conveys, and discharges rainwater away from a structure and site, preventing water accumulation and potential damage.

A system using pipes that collect and convey water that has seeped into the ground, diverting it outwards.

The rate at which rainfall occurs within a specific time frame, often measured in inches per hour or minutes.

The minimum slope required for a roof to ensure water flows towards drains, avoiding standing water or ponding.

A safety feature for storm drainage systems, often used in areas prone to heavy rainfall or potential clogging.

Storm drain pipes cannot be connected to septic tanks or regular sewer lines, except for designated storm or combined sewer lines.

Rainwater piping should be protected from damage in areas that might pose risks such as freezing, heavy traffic, or structural elements.

A pit below ground level used for collecting and pumping out storm water in areas with low elevation compared to the sewer line.

A pump that removes water from a storm water sump and discharges it to a drainage system or other appropriate location.