What is bridge deck drainage?
Bridge drainage covers the collection and removal of waters from a bridge deck. To accomplish this function, drains are placed adjacent to curbs for collection of water which is then either dumped directly on the ground or is conveyed to a suitable disposal point. Bridge Deck Drainage is Divided into Two Classes.
What is subsurface drainage system?
Subsurface drainage lowers the watertable and removes excess water through open ditches or perforated pipe. Watertable depth can be controlled by installing a weir on the drainage system. During wet periods, the watertable is lowered so the root zone remains unsaturated.
What are the types of subsurface drainage?
There are 4 main types of subsurface drainage systems:
- corrugated and PVC slotted subsurface pipes.
- mole drainage (including mole drains, mole drains over collector pipe systems and gravel mole drains)
- interceptor drains.
- ground water pumps.
How do bridges drain water?
Highway bridge decks are usually designed with slopes and cross fall to ensure efficient runoff drainage. Typically, the runoff is directed to downspouts on the bridge deck that discharge the water directly from the deck to below. Spacing of standard deck drains to convey runoff.
What are scuppers on a bridge?
A scupper is a small opening in the bridge deck, curb, or barrier through which water can flow from the bridge deck. This program will only be considering the opening in the bridge deck.
What are the problems of subsurface drainage?
The main water quality concern about subsurface drainage is the increased loss of nitrates and other soluble constituents that can move through soil to drainage systems and end up in nearby surface water.
What are the two types of drainage systems?
There are two main types of drainage system options: surface drains and french drains. Surface drainage systems consist of a few ground-level areas drains that are connected to PVC piping. When it rains, water flows down the drains, into the piping, and is transferred away from the house.
Do bridges have drainage?
Bridge drainage pipes are generally large to facilitate maintenance. The inlet conditions generally control the flow capacity. Thus, the hydraulic characteristics of the pipe system below the inlet seldom controls the flow. Design is more often governed by maintenance needs and structural and aesthetic considerations.
How can I improve my subsurface drainage?
Put a 50 mm layer in the bottom of your trench before laying the pipe and cover it with a further 50 mm on top. A useful tip is to backfill over the gravel with sand right up to the soil surface, which will help get the excess water into the pipe more efficiently.
Why is subsurface drainage better than surface drainage?
The primary advantage of subsurface drainage in humid regions is the water table can be lowered so soils classified as poorly drained can be improved to respond more like well drained soils, with the benefits of improved productivity and trafficability.
What are deck scuppers?
A scupper is an opening in the side walls of a vessel or an open-air structure, which allows water to drain instead of pooling within the bulwark or gunwales of a vessel, or within the curbing or walls of a building.
What is deck drain?
DESCRIPTION. DECK-O-DRAIN drainage system provides an effective drainage system for concrete pool decks. Wherever specified, the system effectively collects and carries water away quickly from pool decks and other patio areas. Made of tough, long lasting PVC, the DECK-O-DRAIN system resists wear and is non-corrosive.
What are the three types of drainage patterns?
These are dendritic, trellis, rectangular, and radial patterns.
- Dendritic pattern: This pattern develops where the river channel follows the slope of the terrain.
- Trellis pattern: A river joined by its tributaries, at approximately right angles, develops a trellis pattern.
Why is subsurface drainage important?
Artificial subsurface drainage increases productivity on land where high water table or soil moisture conditions prevent the gravitational movement of water from the root zone.
What are the important factors for designing the subsurface drainage system?
The need for subsurface drainage sys- tems is related to the water table elevation in the spring, the permeability of the soil and underlying subsoil materials, and the crop requirements. Often at a site, subsurface drainage is complemented by other practices such as surface drainage and erosion control.
Why is it called a scupper?
All we know for sure is that scupper meant “to ambush and massacre” in 19th-century military slang and developed its extended uses of “defeat” and “do in” in the early-mid 20th century.
Do I need a deck drain?
No matter what kind of pool you have installed on your property, you will need the right pool drainage in place to prevent damage to your pool deck, your home, and your yard. Being too casual about the pool deck drainage that you have in place can lead to major issues with your yard, your pool, or your home.
How do I choose the right subsurface drainage system?
To protect crops, a subsurface drainage system must be able to remove excess water from the upper portion of the active root zone 24 to 48 hours after a heavy rain. The drainage system capacity selected for most northern Midwest farmlands should provide the desired amount of water removal per day, commonly referred to as the drainage coefficient.
Why envirodeck bridge drainage?
Envirodeck is the number one selling bridge drainage system for the UK and Ireland. A combination of innovative design and a composite non-metallic material gives a one-piece unit that is lighter and stronger than traditional systems. Envirodeck provides both surface drainage and sub-surface drainage.
Why is surface and subsurface drainage important in Minnesota?
Improved surface and subsurface drainage is necessary for some Minnesota soils to optimize the crop environment and reduce production risks.
Does envirodeck provide both surface and sub-surface drainage?
While Envirodeck provides both surface and sub-surface drainage you may also want to consider installing our Drideck system to ensure the bridge deck remains completely free from sub-surface water. What our Customers say…