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1. DRAINAGE PATTERNS
- www.il-st-acad-sci.org
- DRAINAGE PATTERNS.
- A ring-shaped drainage system. Over circular underground rock structures such as batholiths, the drainage network may develop into a series of concentric rings.
- A branching treelike drainage pattern. ...
- A rectangular drainage pattern. ... Sometimes, the joint pattern in the rocks creates a Rectangular drainage. This is similar to the Trellised drainage, but the pattern is less distinct.
- An irregular broken drainage system. When ice sheets melt, the drainage pattern left behind may be broken and irregular. ...
- In addition to the patterns mentioned above, drainage patterns may have the following characteristics: .
- Accordant drainage: When the rock structure has had a direct influence on the courses of the rivers. ...
- Discordant drainage: When the drainage pattern is not related to the dip of the underlying rock. This type of drainage can of two subtypes. ...
- Antecendent drainage: When a region of rock is slowly uplifted and rivers cut straight down through the rock. Thus, the original drainage pattern is maintained. ...
- Superimposed drainage: When the drainage adapts so totally to the overlying rock structure that it keeps its shape even as it cuts down into quite different structures. ...
2. Drainage, Septic Tank Installation and Groundworks from Erskine Drainage and Groundworks, Glasgow, Scotland
- www.erskinedrainage.co.uk
- Drainage, Septic Tank Installation and Groundworks from Erskine Drainage and Groundworks, Glasgow, Scotland.
- Erskine Drainage & Ground Works have been carrying out specialist drainage, septic tank installation and foundation ground works for over 20 years. ...
- Land drainage .
- Foul drainage .
- Surface water drainage .
- Golf course drainage .
- Erskine Drainage are approved drainage contractors by West of Scotland Water.
- Erskine Drainage.
- Drainage, Septic Tank Installation and Groundworks from Erskine Drainage and Groundworks, Glasgow, Scotland.
- © Erskine Drainage 2001.
3. Micro Drainage Home Page
- www.microdrainage.co.uk
- In the same two decades, another major change has equipped engineers with the tools they need to accommodate the changing forces of nature: the development by Micro Drainage of WinDes and WinDap, the first PC-based drainage design and analysis software suite. ...
4. Mine Environment Neutral Drainage
- www.nrcan.gc.ca
- Mine Environment Neutral Drainage.
- Through the Mine Environment Neutral Drainage (MEND) Program, Canadian mining companies and provincial/territorial and federal departments have reduced the liability due to acidic drainage by at least $400 million. ...
- Acidic drainage is recognized as the largest environmental liability facing the mining industry and, to a lesser extent, the public through abandoned mines. MEND was implemented to develop and apply new technologies to prevent and control acidic drainage. ... The target is for new mines to open without long-term concerns about acidic drainage upon closure. ...
- "MEND has focussed the acidic drainage effort, so that now we have a whole series of good options in our toolbox. ...
5. Royal Horticultural Society - Gardening Advice: Installing Drainage
- www.rhs.org.uk
- Installing drainage.
- Good soil drainage is important to encourage healthy plant growth. ...
- Causes of poor drainage.
- Poor drainage may be indicated by surface puddling after rain. ...
- Testing soil drainage.
- Poor drainage may be confirmed by pouring water into a 30-60cm (1-2ft) deep hole. If the water remains for hours or even days the soil may benefit from drainage.
- With surface compaction double digging and the incorporation of bulky organic matter (about one bucket per square metre) and a 5cm (2in) layer of coarse grit into the top 15-30cm (6-12in) will improve drainage.
- Where poor drainage is due to other factors it may be necessary to install a drainage system. ...
- There is no point installing drainage unless there is somewhere for the excess water to go. ...
6. Timewell Tile: The Drainage Solution
- www.timewelltile.com
- imewell Tile is America’s fastest growing plastic drainage tile company. Since 1995, we have quickly and effectively provided products and services to address the needs of commercial/retail water managers and agricultural drainage specialists. Located in the heart of the Midwest, Timewell Tile’s high-density polyethylene pipe and progressive drainage services set a new standard for the industry. We feature 24-hour delivery, extremely competitive pricing, sale and lease of tile plows and related equipment, a complete line of drainage products and much more.
7. Surface drainage management
- www.co.whatcom.wa.us
- Surface Drainage Management.
- Surface Drainage Management.
- Whatcom County Public Works Maintenance & Operations (M&O) Surface Drainage Management division serves the public and ensures that all drainage structures are maintained and in good working condition. This includes all drainage ditches, culverts, catch basins, and manholes. ...
- The Drainage Division is responsible for maintaining the stormwater drainage systems and managing the stormwater runoff on road right-of-way to provide proper drainage and prevent flooding, road damage, and guarantee proper environmental measures. ... Recently the Drainage Division has replaced culverts in need of maintenance on fish bearing streams in accordance with Washington Department of Fish and Wildlife (WDFW) fish passage standards. ...
- Other activities include checking drainage structures (ditches, culverts, catch basins, and manholes) to make sure that they are in good working condition. ... Specific stream and drainage basin permits may require a shorter window of July 15 to July 31. ...
- Current activities include a program to inventory all the drainage structures in Whatcom County, such as culverts, catch basins, and manholes using GPS. ...
- Updating the M&O Surface Drainage Program occurs regularly for changes made by the National Marine Fisheries Service, Washington Departments of Ecology, and WDFW on water quality and Endangered Species Act issues. ...
8. Land Drainage Act 1994
- www.hmso.gov.uk
- Land Drainage Act 1994 .
- A print version is also available and is published by The Stationery Office Limited as the Land Drainage Act 1994, ISBN 010542594X. ...
- Land Drainage Act 1994 .
- An Act to amend the Land Drainage Act 1991 in relation to the functions of internal drainage boards and local authorities.
- Land Drainage Act 1991 there shall be inserted .
- Duties in relation to drainage boards. ...
- (1) It shall be the duty of an internal drainage board, of each of the Ministers and of the NRA, in formulating or considering any proposals relating to any functions of such a board (a) so far as may be consistent (i) with the purposes of any enactment relating to the functions of such a board; and (ii) in the case of the Secretary of State, with his duties under section 2 of the 1991 c. ...
- (2) Subject to subsection (1) above, it shall be the duty of an internal drainage board, of each of the Ministers and of the NRA, in formulating or considering any proposals relating to any functions of such a board (a) to have regard to the desirability of preserving for the public any freedom of access to areas of woodland, mountains, moor, heath, down, cliff or foreshore and other places of natural beauty;.
- (3) Subsections (1) and (2) above shall apply so as to impose duties on an internal drainage board in relation to (a) any proposals relating to the functions of the NRA or of a water undertaker or sewerage undertaker;.
- as they apply in relation to proposals relating to the functions of an internal drainage board but as if, for that purpose, the reference in subsection (1)(a) above to enactments relating to the functions of such a board were a reference to enactments relating to that to which the proposal relates.
- (4) Subject to obtaining the consent of any navigation authority, harbour authority or conservancy authority before doing anything which causes navigation which is subject to the control of that authority to be obstructed or otherwise interfered with, it shall be the duty of an internal drainage board to take such steps as are (a) reasonably practicable; and.
- (5) It shall be the duty of every internal drainage board, in determining what steps to take in performance of any duty imposed by virtue of subsection (4) above, to take into account the needs of persons who are chronically sick or disabled.
- (6) Nothing in this section (or any other provision of this Act) shall require recreational facilities made available by an internal drainage board to be made available free of charge.
- (b) may at any time be affected (i) by works, operations or activities of an internal drainage board, or (ii) by works, operations or activities of a local authority under this Act,that Council shall notify the fact that the land is of special interest for that reason to every internal drainage board and local authority whose works, operations or activities may affect the land.
- (b) may at any time be affected (i) by works, operations or activities of an internal drainage board, or (ii) by works, operations or activities of a local authority under this Act,the National Park authority or Broads Authority shall notify the fact that the land is such land, and the reasons why those matters are of particular importance in relation to the land, to every internal drainage board and local authority whose works, operations or activities may affect the land.
- (3) Where an internal drainage board or local authority have received a notification under subsection (1) or (2) above with respect to any land, the board or authority shall consult the notifying body before carrying out any works, operations or activities, or in the case of the authority any works operations or activities under this Act, which appear to the board or authority to be likely (a) to destroy or damage any of the flora, fauna, or geological or physiographical features by reason of which the land is of special interest; or.
9. Plumbing & Drainage Institute - Home Page
- www.pdionline.org
- The Plumbing and Drainage Institute is an excellent source of information and product standards for plumbing and drainage products. We are a useful resource for plumbing and drainage professionals, architects, contractors and public officials. ...
- acknowledged as such by Plumbing & Drainage Institute. ...
- Plumbing & Drainage Institute.
- Plumbing & Drainage Institute.
10. Surface Water Drainage
- www.ofwat.gov.uk
- Drainage and sewerage.
- WaterVoice Home > Customer Information & FAQs > FAQs > Drainage and sewerage.
- Surface Water Drainage.
- What is the Surface Water Drainage Charge for?.
- The Surface Water Drainage Charge covers the costs of taking away and treating surface water that runs from properties into a sewerage company's drains. ...
- 3 Do I have to pay the Surface Water Drainage Charge?.
- Why can't the Surface Water Drainage rebate be backdated?.
- The Director General requires sewerage companies to offer rebates for surface water drainage where customers' properties do not drain to the public sewer.
- The Water Industry Act of 1991 (and case law establishes) does not prevent companies from charging for surface water drainage even where the service is not received.
- The records did not show which properties are connected and which are not for surface water drainage purposes. ...
11. index
- www.uscid.org
- society for irrigation and drainage professionals.
- Third International Conference on Irrigation and Drainage.
- Committee on Irrigation and Drainage) is a nonprofit professional society, organized in 1952, whose multi-disciplinary membership shares an interest in the planning, design, construction, operation and maintenance of irrigation, drainage and flood control works; agricultural economics; water law; and environmental and social issues affecting irrigated agriculture. ...
- USCID is the United States member of the International Commission on Irrigation and Drainage (ICID), an international organization of more than 70 countries founded in 1950. ...
- papers for the ICID Congresses and the Irrigation and Drainage, the Journal of the International Commission on Irrigation and Drainage .
- Collects and disseminates information on irrigation, drainage and flood control, including ICID publications .
- Publishes the USCID Newsletter to keep members informed of the latest irrigation, drainage and flood control developments .
12. Building Science Corporation - Drainage Planes and Air Spaces
- www.buildingscience.com
- Drainage Planes and Air Spaces.
- All wood frame wall assemblies require a drainage plane coupled with a drainage space - where it rains. ... Traditionally, drainage planes consisted of tar paper installed shingle fashion behind exterior claddings coupled with a flashing at the base of each wall to direct rainwater that penetrated the cladding systems to the exterior. It was important that some form of air space or drainage space was also provided between the cladding system and the drainage plane to allow drainage.
- With wood siding, the drainage space is typically intermittent and depends largely on the profile of the siding. Ideally, wood siding should be installed over furring creating a drained (and vented) air space between the drainage plane and wood siding. With vinyl and aluminum siding, the drainage space is more pronounced and furring is not necessary.
- With stucco claddings, the drainage space was traditionally provided by using two layers of asphalt impregnated felt paper. ... When the assembly dried, the papers would shrink, wrinkle and de-bond providing a tortuous, but reasonably effective, drainage space. This drainage space was typically around 1/8-inch wide.
- With brick veneers, the width of the drainage space has been based more on tradition rather than physics. ... It is important that this 1-inch airspace is coupled with a functional drainage plane.
- The masonry industry does not like steel stud back-up walls covered with gypsum board and a drainage plane. ...
- This precludes the possibility of installing a drainage plane on the exterior surface of the masonry back-up wall. If a drainage plane is not present, an airspace greater than 1-inch is necessary to control rain entry - and this airspace must be free from mortar droppings. Of course, the corollary of this is as follows: if a drainage plane is present, and airspace or drainage space of 3/8-inch thickness will work just fine, even if it is filled with mortar droppings. Think of a traditional stucco wall - isn't it really a wall with a drainage plane that has a tortuous drainage space filled with mortar droppings?.
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