×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

roof runoff /drywell

roof runoff /drywell

roof runoff /drywell

(OP)
Hi guys
I want to control a commercial roof runoff with an area approxiamte 76815 sf by drywells, the requred storage volume is 7565cf and drywell discharge rate is 0.3cf/s, how i can provide the requred storage without building a swale over drywells with considering the facts that runoff doesn't need to treatment before infiltration into ground.
the minimum infiltration of soil is 1 inch/hour

RE: roof runoff /drywell

Talk to ADS. They make a storage system that can be installed under the parking area.

Richard A. Cornelius, P.E.
WWW.amlinereast.com

RE: roof runoff /drywell

Collect the water in inlets and pipe to the dry wells.  Use perforated pipes and bed the pipes in large and medium gravel bedding.  The rate of the absorption of the soils is a function of the coefficient of permeability and water table elevation.

RE: roof runoff /drywell


.

It appears you are describing a "soakaway", which seems to be a fairly common stormwater management option in various British Commonwealth countries. Below are a few links on these that might prove helpful...

Soakaway design and construction
http://www.pavingexpert.com/drain08.html

Soakaway serving small buildings
http://www.sbsa.gov.uk/archive/th_html2005/bsthnd-50.htm#5

SUDS infiltration devices
http://www.ciria.org/suds/infiltration_devices.htm

DrainSmart
http://www.drainsmart.co.uk

Soakaways
http://www.hughesconcrete.co.uk/hughes-productsb.html

Visual Soakaway Design 4
http://www.webcomsystems.co.uk/soakaway_design.htm

BRESOAK Soakaway design software
http://www.brepress.com/images/brebooks_mar07.htm

WinDes Micro Drainage
http://www.ecl.uk.com/contents/company%20info/products/software/microdrainage.html

.

tsgrue: site engineering, stormwater
management, landscape design, ecosystem
rehabilitation, mathematical simulation
http://hhwq.blogspot.com

RE: roof runoff /drywell

Is out door (patio) dinning area floor drain needs to connect to storm drain or sewer drain system?

RE: roof runoff /drywell

toilets, sinks, showers and any interior floor drains should be connected to sanitary sewer.  Outside floor drains should generally be connected to storm sewer.

RE: roof runoff /drywell

If it is outdoor, they (code officials) would refer to it as a deck drain and it would go to the storm because it would get a lot of rainwater flowing to it.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources