riser


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riser

1. the vertical part of a stair or step
2. a vertical pipe, esp one within a building

Riser

1. The vertical board under the tread of a step; a vertical supply pipe for a sprinkler system; a pipe for water, drainage, gas, steam, or venting that extends vertically through one or more stories and services other pipes.
2. The vertical face of a stair step.
See also: Step

riser

[′rīz·ər]
(chemical engineering)
That portion of a bubble-cap assembly in a distillation tower that channels the rising vapor and causes it to flow downward to pass through the liquid held on the bubble plate.
(civil engineering)
A board placed vertically beneath the tread of a step in a staircase.
A vertical steam, water, or gas pipe.
(geology)
A steplike topographic feature, such as a steep slope between terraces.
(metallurgy)
(petroleum engineering)
In an offshore drilling facility, a system of piping extending from the hole and terminating at the rig.
(textiles)
A raised spot in a weaving pattern where the warp traverses the weft or the filling.

riser

riser, 1
1. The vertical face of a stair step.
2. Any upright face, as of a seat, platform, etc.
3. A platform on the stage of a theater or concert hall on which a performer is placed.
4. A water-supply, drainage, gas, steam, or vent pipe which extends vertically, one full story or more, to service several branches or a group of fixtures.
5. An electrical cable which extends vertically, one full story or more, to distribute electrical power to electric panels on the different floors of a building.
6. A duct, which extends vertically, one full story or more, to distribute air to branch ducts on the different floors of a building.
7. A vertical supply pipe for a fire sprinkler system.
References in periodicals archive ?
1 m high, 100 mm-diameter riser with the multi-tube distributor (for simplicity, referred as Riser-Tube and Distributor-Tube in this paper) and the 10 m high, 76 mm-diameter riser with the perforated multi-orifice distributor (for simplicity, referred as Riser-Orifice and Distributor-Orifice in this paper).
Overcoming the space constraint requires active riser cards in PCIe systems.
Even though the site was subject to very swift currents, hardly any deflection in the riser could be detected.
I had the opportunity to test the new riser and the new bow for myself.
Groat protein and oil percentages of Riser are both high.
We're thrilled with the growth we've seen this year," said Michael Janda, president and founder of Riser Media.
Acteon sister company, 2H Offshore, deals in provision of the riser analysis for the Catcher development.
This will increase the pressure rating of the riser system to 15,000 psi,creating a full HP/HT capability all the way from the subsea wellhead to the surface Blow-Out Preventer.
We are very pleased to see our customers DMSE and Atwood exercising their option for the Aker Solutions CLIP riser systems," says Thor Arne Hacverstad, executive vice president of Aker Solutions' drilling technologies business.
This allows you to look for temperature variations in the metal, which can indicate an area of the riser that's failing.
Furmanite also performed the pipe cutting operations to enable the old riser sections to be removed.