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81-445: Pumping stations are designed to move water or sewage from one location to another, overcoming gravitational challenges, and are essential for maintaining navigable canal levels, supplying water, and managing sewage and floodwaters. In canal systems, pumping stations help replenish water lost through lock usage and leakage, ensuring navigability. Similarly, in land drainage, stations pump water to prevent flooding in areas below sea level,

162-423: A sewer force main if the sewage is transported some significant distance. The pumping station may be called a lift station if the pump merely discharges into a nearby gravity manhole. From here the cycle starts all over again until the sewage reaches its point of destination—usually a treatment plant. By this method, pumping stations are used to move waste to higher elevations. In the case of high sewage flows into

243-403: A well into a reservoir Used to pump drinking water from a reservoir into a water supply system. Navigable A body of water , such as a river , canal or lake , is navigable if it is deep, wide and calm enough for a water vessel (e.g. boats) to pass safely. Navigability is also referred to in the broader context of a body of water having sufficient under keel clearance for

324-556: A "thermal bridge" that degrades thermal performance. Also, since steel does not have the same thermal expansion coefficient as concrete, as the wall heats and cools any steel that is not embedded in the concrete can create thermal stresses that cause cracking and spalling. To achieve better thermal performance, insulation was added in the void, and in many applications today the steel trusses have been replaced by composite (fibreglass, plastic, etc.) connection systems. These systems, which are specially developed for this purpose, also eliminate

405-482: A building facade or erect free-standing walls for landscaping, soundproofing , and security. In appropriate instances precast products – such as beams for bridges, highways, and parking structure decks – can be prestressed structural elements. Stormwater drainage, water and sewage pipes, and tunnels also make use of precast concrete units. Precast concrete molds can be made of timber, steel, plastic, rubber, fiberglass, or other synthetic materials, with each giving

486-668: A building's enclosure or "envelope," they can be designed to also serve as part of the building's structural system, eliminating the need for beams and columns on the building perimeter. Besides their energy efficiency and aesthetic versatility, they also provide excellent noise attenuation, outstanding durability (resistant to rot, mold, etc.), and rapid construction. In addition to the good insulation properties, sandwich panels require fewer work phases to complete. Compared to double-walls, for example, which have to be insulated and filled with concrete on site, sandwich panels require much less labor and scaffolding. The precast concrete industry

567-401: A chain off of the duckfoot and up the two guide rails to the maintenance (normally ground) level. Reinstalling the pumps simply reverses this process with the pump being remounted on the guide rails and lowered onto the duckfoot where the weight of the pump reseals it. As the motors are sealed and weather is not a concern, no above ground structures are required, excepting a small kiosk to contain

648-590: A concept pioneered during the Victorian era in places like The Fens in the UK. The introduction of "package pumping stations" has modernized drainage systems, allowing a compact, efficient solution for areas where gravity drainage is impractical. Water pumping stations are differentiated by their applications, such as sourcing from wells, raw water pumping, and high service pumping, each designed to meet specific demand projections and customer needs. Wastewater pumping stations, on

729-432: A controlled environment (typically referred to as a precast plant), the precast concrete is afforded the opportunity to properly cure and be closely monitored by plant employees. Using a precast concrete system offers many potential advantages over onsite casting. Precast concrete production can be performed on ground level, which maximizes safety in its casting. There is greater control over material quality and workmanship in

810-481: A direct transit of Mud Pond by canoe , within a tract of private property surrounded by public land within the Adirondack Park . In New York State, waterways that are 'navigable-in-fact' are considered public highways , meaning that they are subject to an easement for public travel, even if they are on private land. Brown argued that because he recreationally 'navigated' the waterway through private property, it

891-459: A dry well or pump house and usually consist only of a wet well. In this configuration, submersible sewage pumps with closely coupled electric motor are mounted within the wet well itself, submerged within the sewage. Submersible pumps are mounted on two vertical guide rails and seal onto a permanently fixed "duckfoot", which forms both a mount and also a vertical bend for the discharge pipe. For maintenance or replacement, submersible pumps are raised by

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972-437: A high-level alarm indication, in the event of pump failure; and possibly a guide-rail/auto-coupling/pedestal system, to permit easy removal of pumps for maintenance. Traditional site constructed systems have the valve vault components installed in a separate structure. Having two structural components can lead to potentially serious site problems such as uneven settling between components which results in stress on, and failure of

1053-403: A large open passage so as to avoid clogging with debris or winding stringy debris onto the impeller. A four pole or six pole AC induction motor normally drives the pump. Rather than provide large open passages, some pumps, typically smaller sewage pumps, also macerate any solids within the sewage breaking them down into smaller parts which can more easily pass through the impeller. The interior of

1134-414: A precast plant compared to a construction site. The forms used in a precast plant can be reused hundreds to thousands of times before they have to be replaced, often making it cheaper than onsite casting in terms of cost per unit of formwork. Precast concrete forming systems for architectural applications differ in size, function, and cost. Precast architectural panels are also used to clad all or part of

1215-457: A sewage pump station is a very dangerous place. Poisonous gases, such as methane and hydrogen sulfide , can accumulate in the wet well; an ill-equipped person entering the well would be overcome by fumes very quickly. Any entry into the wet well requires the correct confined space entry method for a hazardous environment. To minimize the need for entry, the facility is normally designed to allow pumps and other equipment to be removed from outside

1296-437: A small river may be navigable by smaller craft such as a motorboat or a kayak , but unnavigable by a larger freighter or cruise ship . Shallow rivers may be made navigable by the installation of locks that regulate flow and increase upstream water level , or by dredging that deepens parts of the stream bed . Inland Water Transport ( IWT ) Systems have been used for centuries in countries including India, China, Egypt,

1377-511: A specific pump controller. RTUs are very helpful in remote monitoring of each pumping station from a centralized control room with SCADA (Supervisory Control & Data Acquisition) systems. This setup can be helpful in monitoring pump faults, levels, and other alarms and parameters, making it more efficient. A pumped-storage scheme is a type of power station for storing and producing electricity to supply high peak demands by moving water between reservoirs at different elevations. Typically, water

1458-459: A unique finish. In addition, many surface finishes for the four precast wall panel types – sandwich, plastered sandwich, inner layer and cladding panels – are available, including those creating the looks of horizontal boards and ashlar stone . Color may be added to the concrete mix, and the proportions and size aggregate also affect the appearance and texture of finished concrete surfaces. Ancient Roman builders made use of concrete and soon poured

1539-466: A vessel. Such a navigable water is called a waterway , and is preferably with few obstructions against direct traverse that need avoiding, such as rocks , reefs or trees . Bridges built over waterways must have sufficient clearance . High flow speed may make a channel unnavigable due to risk of ship collisions . Waters may be unnavigable because of ice , particularly in winter or high- latitude regions. Navigability also depends on context:

1620-551: A water-body is presumed non-navigable with the burden of proof on the party claiming it is navigable. The U.S. Forest Service considers a waterbody not navigable until is adjudicated otherwise. see Whitewater v. Tidwell 770 F. 3d 1108 (2014). Therefore, and public rights associated with navigability cannot be presumed to exist without a finding of navigability. 'Navigability' is a legal term of art , which can lead to considerable confusion. In 2009, journalist Phil Brown of Adirondack Explorer defied private property postings to make

1701-470: Is a huge energy consuming industry, and precast concrete products are and will continue to be more energy efficient than its counterparts. The wide range of designs, colours, and structural options that these products provide is also making it a favourable choice for its consumers. Many state and federal transportation projects in the United States require precast concrete suppliers to be certified by either

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1782-509: Is a list of those described in this encyclopedia. In the UK, during the Victorian Era , there was a fashion for public buildings to feature highly ornate architecture . Consequently, a considerable number of former pumping stations have been listed and preserved. The majority were originally steam-powered, and where the steam engines are still in situ , many of the sites have since re-opened as museum attractions. Used to pump water from

1863-426: Is also used for the roll ways of some rubber-tyred metros . Modular paving is available in a rainbow of colors, shapes, sizes, and textures. These versatile precast concrete pieces can be designed to mimic brick, stone or wood. Underground vaults or mausoleums require watertight structures that withstand natural forces for extended periods of time. Storage of hazardous material, whether short-term or long-term,

1944-407: Is an increasingly important environmental issue, calling for containers that not only seal in the materials, but are strong enough to stand up to natural disasters or terrorist attacks. Seawalls , floating docks, underwater infrastructure, decking, railings, and a host of amenities are among the uses of precast along the waterfront. When designed with heavy weight in mind, precast products counteract

2025-407: Is available, back pumping systems may be employed. Water is extracted from the canal below the lowest lock of a flight and is pumped back to the top of the flight, ready for the next boat to pass through. Such installations are usually small. When low-lying areas of land are drained, the general method is to dig drainage ditches . However, if the area is below sea level then it is necessary to pump

2106-479: Is built into the system so that in the event that any one pump is out of service, the remaining pump or pumps will handle the designed flow. The storage volume of the wet well between the "pump on" and "pump off" settings is designed to minimize pump starts and stops, but is not so long a retention time as to allow the sewage in the wet well to go septic . Sewage pumps are almost always end-suction centrifugal pumps with open impellers and are specially designed with

2187-409: Is channeled from a high-level reservoir to a low-level reservoir, through turbine generators that generate electricity. This is done when the station is required to generate power. During low-demand periods, such as overnight, the generators are reversed to become pumps that move the water back up to the top reservoir. There are countless thousands of pumping stations throughout the world. The following

2268-701: Is essential that each structural component be designed and tested to withstand both the tensile and compressive loads that the member will be subjected to over its lifespan. Expanded polystyrene cores are now in precast concrete panels for structural use, making them lighter and serving as thermal insulation. Multi-storey car parks are commonly constructed using precast concrete. The constructions involve putting together precast parking parts which are multi-storey structural wall panels, interior and exterior columns, structural floors, girders, wall panels, stairs, and slabs. These parts can be large; for example, double-tee structural floor modules need to be lifted into place with

2349-431: Is fed from underground gravity pipelines (pipes that are sloped so that a liquid can flow in one direction under gravity). Sewage is fed into and stored in a pit, commonly known as a wet well . The well is equipped with electrical instrumentation to detect the level of sewage present. When the sewage level rises to a predetermined point, a pump will be started to lift the sewage upward through a pressurized pipe system called

2430-459: Is largely dominated by Government initiated projects for infrastructural development. However, these are also being extensively used for residential (low and high rise) and commercial constructions because of their various favourable attributes. The efficiency, durability, ease, cost effectiveness, and sustainable properties of these products have brought a revolutionary shift in the time consumed in construction of any structure. Construction industry

2511-509: Is moved by this mode of transport. Waterways provide enormous advantages as a mode of transport compared to land and air modes of transports. Precast concrete Precast concrete is a construction product produced by casting concrete in a reusable mold or "form" which is then cured in a controlled environment, transported to the construction site and maneuvered into place; examples include precast beams , and wall panels, floors, roofs, and piles. In contrast, cast-in-place concrete

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2592-451: Is not possible. A package pumping station is an integrated system, built in a housing manufactured from strong, impact-resistant materials such as precast concrete , polyethylene , or glass-reinforced plastic . The unit is supplied with internal pipework fitted, pre-assembled ready for installation into the ground, after which the submersible pumps and control equipment are fitted. Features may include controls for fully automatic operation;

2673-498: Is not sufficient to prove that a waterway is a public highway in New York State. The US Supreme Court had also found that use of modern water craft insufficient evidence to support a finding of navigability In India there are currently three National Waterways totaling a distance of 2921 km. They are: It is estimated that the total navigable length of inland waterways is 14500 km. A total of 16 million tonnes of freight

2754-607: Is poured into site-specific forms and cured on site. Recently lightweight expanded polystyrene foam is being used as the cores of precast wall panels, saving weight and increasing thermal insulation . Precast stone is distinguished from precast concrete by the finer aggregate used in the mixture, so the result approaches the natural product. Precast concrete is employed in both interior and exterior applications, from highway, bridge, and high-rise projects to parking structures, K-12 schools, warehouses, mixed-use, and industrial building construction. By producing precast concrete in

2835-410: Is the most common form of concrete reinforcement. It is typically made from steel, manufactured with ribbing to bond with concrete as it cures. Rebar is versatile enough to be bent or assembled to support the shape of any concrete structure. Carbon steel is the most common rebar material. However, stainless steel, galvanized steel, and epoxy coatings can prevent corrosion. The following is a sampling of

2916-460: Is typically 8 inches, but their designs are often customized to the application. In a typical 8-inch wall panel the concrete wythes are each 2-3/8 inches thick), sandwiching 3-1/4 inches of high R-value insulating foam. The interior and exterior wythes of concrete are held together (through the insulation) with some form of connecting system that is able to provide the needed structural integrity. Sandwich wall panels can be fabricated to

2997-614: The Claverton and Crofton Pumping Stations , are preserved as museum attractions. Examples such as land drainage in the Netherlands water supply in Hong Kong and agricultural drainage in Iraq, underscore the vital role these facilities play in supporting modern infrastructure, environmental management, and energy storage. In countries with canal systems, pumping stations are also frequent. Because of

3078-513: The Clean Water Act. Therefore, the Clean Water Act establishes Federal jurisdiction beyond "navigable waters" extending a more limited federal jurisdiction under the Act over private property which may at times be submerged by waters. Because jurisdiction under the Clean Water Act extends beyond public property, the broader definitions of "traditional navigable" and "significant nexus" used to establish

3159-621: The Jim Bridger Building in Williston, North Dakota, was precast in Minnesota with air, electrical, water, and fiber utilities preinstalled into the building panels. The panels were transported over 800 miles to the Bakken oilfields, and the commercial building was assembled by three workers in minimal time. The building houses over 40,000 square feet of shops and offices. Virtually the entire building

3240-698: The Mud Pond rapids." However, New York's highest court, the New York Court of Appeals overturned the lower court decisions, and sent the case back to the trial court for consideration of "the Waterway's historical and prospective commercial utility, the Waterway's historical accessibility to the public, the relative ease of passage by canoe, the volume of historical travel, and the volume of prospective commercial and recreational use." The decision by New York's highest court established that recreational 'navigability' alone

3321-530: The Netherlands, the United States, Germany, and Bangladesh. In the Netherlands, IWT handles 46% of the nation's inland freight ; 32% in Bangladesh, 14% in the United States, and 9% in China. What constitutes "navigable" waters can not be separated from the context in which the question is asked. Numerous federal agencies define jurisdiction based on navigable waters, including admiralty jurisdiction, pollution control, to

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3402-489: The U.S. This statute also requires a permit from the U.S. Army Corps of Engineers for any construction in or over any navigable water, or the excavation or discharge of material into such water, or the accomplishment of any other work affecting the course, location, condition, or capacity of such waters. However, the ACOE recognizes that only the judiciary can make a definitive ruling as to which are navigable waters.33 CFR 329 For

3483-655: The UK for a variety of applications including agricultural buildings, grain stores, silage clamps, slurry stores, livestock walling and general retaining walls. Panels can be used horizontally and placed either inside the webbings of RSJs ( I-beam ) or in front of them. Alternatively panels can be cast into a concrete foundation and used as a cantilever retaining wall. Precast concrete building components and site amenities are used architecturally as fireplace mantels, cladding, trim products, accessories and curtain walls. Structural applications of precast concrete include foundations, beams, floors, walls and other structural components. It

3564-579: The accumulation of sedimentary mud that created the land initially. Elsewhere, pumping stations are used to remove water that has found its way into low-lying areas as a result of leakage or flooding (in New Orleans , for example). In more recent times, a "package pumping station" provides an efficient and economic way of installing a drainage system. They are suitable for mechanical building services collection and pumping of liquids like surface water, wastewater or sewage from areas where drainage by gravity

3645-461: The buoyant forces of water significantly better than most materials. Prestressing is a technique of introducing stresses into a structural member during fabrication and/or construction to improve its strength and performance. This technique is often employed in concrete beams, columns, spandrels, single and double tees, wall panels, segmental bridge units, bulb-tee girders, I-beam girders, and others. Many projects find that prestressed concrete provides

3726-481: The construction, safety, and site protection of roads, airports, and railroad transportation systems. Products include: box culverts , 3-sided culverts, bridge systems, railroad crossings, railroad ties, sound walls /barriers, Jersey barriers , tunnel segments, concrete barriers, TVCBs, central reservation barriers, bollards, and other transportation products. Precast concrete can also be used to make underpasses, surface crossings, and pedestrian subways. Precast concrete

3807-449: The demand or projected demand is reasonably defined, and is dependent on a combination of customer needs and fire flow requirements. Average annual per-capita water consumption, peak hour, and maximum daily can vary greatly due to factors such as climate, income levels, population, and the proportions of residential, commercial, and industrial users. Pumping stations in sewage collection systems are normally designed to handle raw sewage that

3888-408: The differential thermal expansion problem. The best thermal performance is achieved when the insulation is continuous throughout the wall section, i.e., the wythes are thermally separated completely to the ends of the panel. Using continuous insulation and modern composite connection systems, R-values up to R-28.2 can be achieved. The overall thickness of sandwich wall panels in commercial applications

3969-463: The ebb and flow of the tide, and those inland waters that are presently used, or have been used in the past, or may be susceptible for use to transport interstate or foreign commerce while the waterway is in its ordinary condition at the time of statehood. Section 10 of the Rivers and Harbors Act of 1899 (33 U.S.C. 403), approved 3 March 1899, prohibits the unauthorized obstruction of a navigable water of

4050-458: The efficiency and monitoring capabilities of pumping stations, essential for modern systems. Pumped-storage schemes represent a critical use of pumping stations, providing a method for energy storage and generation by moving water between reservoirs at different elevations, highlighting the versatility and importance of pumping stations across sectors. Some pumping stations have been recognized for their architectural and historical significance, e.g.

4131-417: The electrical switchgear and control systems. Due to the much reduced health and safety concerns, and smaller footprint and visibility, submersible pump sewage pumping stations have almost completely superseded traditional sewage pumping stations. Further, a refit of a traditional pumping station usually involves converting it into a modern pumping station by installing submersibles in the wet well, demolishing

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4212-637: The flow from non-navigable tributaries in order to protect commerce downstream, [ US v. Rio Grande Irrigation , 174 U.S. 690, 708 (1899)], [ Oklahoma v. Atkinson , 313 US 508, 525]. Also, the Clean Water Act has introduced the terms "traditional navigable waters," and "waters of the United States" to define the scope of Federal jurisdiction under the Clean Water Act. Here, "Waters of the United States" include not only navigable waters, but also tributaries of navigable waters and nearby wetlands with "a significant nexus to navigable waters"; both are covered under

4293-433: The help of precast concrete lifting anchor systems . Precast concrete is employed in a wide range of engineered earth retaining systems. Products include commercial and residential retaining walls , sea walls , mechanically stabilized earth panels, and other modular block systems. Sanitary and stormwater management products are structures designed for underground installation that have been specifically engineered for

4374-407: The length and width desired, within practical limits dictated by the fabrication system, the stresses of lifting and handling, and shipping constraints. Panels of 9-foot clear height are common, but heights up to 12 feet can be found. The fabrication process for precast concrete sandwich wall panels allows them to be produced with finished surfaces on both sides. Such finishes can be very smooth, with

4455-458: The licensing of dams, and even property boundaries. The numerous definitions and jurisdictional statutes have created an array of case law specific to which context the question of navigability arises. Some of the most commonly discussed definitions are listed here. Navigable waters, as defined by the US Army Corps of Engineers as codified under 33 CFR 329 , are those waters that are subject to

4536-448: The lowest overall cost, considering production and lifetime maintenance. The precast concrete double-wall panel has been in use in Europe for decades. The original double-wall design consisted of two wythes of reinforced concrete separated by an interior void, held together with embedded steel trusses. With recent concerns about energy use, it is recognized that using steel trusses creates

4617-547: The material into moulds to build their complex network of aqueducts , culverts , and tunnels. Modern uses for pre-cast technology include a variety of architectural and structural applications – including individual parts, or even entire building systems. In the modern world, precast panelled buildings were pioneered in Liverpool , England , in 1905. The process was invented by city engineer John Alexander Brodie . The tram stables at Walton in Liverpool followed in 1906. The idea

4698-426: The navigable water was conveyed to the state as part of the transportation network in order to facilitate commerce. Most states retained title to these navigable rivers in trust for the public. Some states divested themselves of title to the land below navigable rivers, but a federal navigable servitude remains if the river is a navigable waterway. Title to the lands submerged by smaller streams are considered part of

4779-606: The numerous products that utilize precast/prestressed concrete. While this is not a complete list, the majority of precast/prestressed products typically fall under one or Since precast concrete products can withstand the most extreme weather conditions and will hold up for many decades of constant usage they have wide applications in agriculture. These include bunker silos, cattle feed bunks, cattle grid , agricultural fencing, H-bunks, J-bunks, livestock slats, livestock watering trough, feed troughs, concrete panels, slurry channels, and more. Prestressed concrete panels are widely used in

4860-412: The other hand, are engineered to handle sewage, with designs that ensure reliability and safety, minimizing environmental impacts from overflows. Innovations in pump technology and station design have led to the development of submersible pump stations, which are more compact and safer, effectively reducing the footprint and visibility of sewage management infrastructure. Electronic controllers have enhanced

4941-575: The panels to reduce on-site construction time. The carpenters, electricians and plumbers do need to make some slight adjustments when first becoming familiar with some of the unique aspects of the wall panels. However, they still perform most of their job duties in the manner to which they are accustomed. Precast concrete sandwich wall panels have been used on virtually every type of building, including schools, office buildings, apartment buildings, townhouses, condominiums, hotels, motels, dormitories, and single-family homes. Although typically considered part of

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5022-570: The pipes and connections between components. The development of a packaged pump station system combined all components into a single housing which not only eliminates uneven settling issues, but pre-plumbing and outfitting each unit prior to installation can reduce the cost and time involved with civil work and site labor. Water pumping stations are differentiated from wastewater pumping stations in that they do not have to be sized to account for high peak flow rates. They have five general categories: Water pumping stations are constructed in areas in which

5103-687: The precast concrete products industry produces utility, underground, and other non-prestressed products, and is represented primarily by the National Precast Concrete Association (NPCA). In Australia , The New South Wales Government Railways made extensive use of precast concrete construction for its stations and similar buildings. Between 1917 and 1932, it erected 145 such buildings. Beyond cladding panels and structural elements, entire buildings can be assembled from precast concrete. Precast assembly enables fast completion of commercial shops and offices with minimal labor. For example,

5184-635: The property through which the water flows and there is no 'public right' to enter upon private property based on the mere presence of water. The scope of the Federal Energy Regulatory Commission (FERC) authority was granted under the Federal Power Act, 1941 (16 U.S.C 791). Such authority is based on congressional authority to regulate commerce; it is not based exclusively on title to the riverbed [16 U.S.C. 796(8)] or even navigability. Therefore, FERC's permitting authority extends to

5265-479: The pump house and retiring the dry well by either stripping it, or knocking down the internal partition and merging it with the wet well. Pump manufacturers have always designed and manufactured electronic devices to control and supervise pumping stations. Today it is also very common to use a programmable logic controller (PLC) or Remote Terminal Unit (RTU) for such work, but the experience needed to solve certain particular problems, makes an easy choice to look for

5346-405: The purpose of further processing into non-contaminating liquids and soil products. Products include: aeration systems , distribution boxes, dosing tanks, dry wells , grease interceptors , leaching pits, sand-oil/oil-water interceptors, septic tanks , water/sewage storage tanks, wet wells, fire cisterns, and other water and wastewater products. Precast concrete transportation products are used in

5427-406: The purposes of transferring property title into public property, the definition of a Navigable waterways closely follows 33 CFR 329. For the purpose of establishing which river is public and therefore state-owned, what is navigable is a constitutional question defined by Federal case law. (See PPL Montana v Montana (2012).) If a river was considered navigable at the time of statehood, the land below

5508-479: The scope of authority under the Act are still ambiguously defined and therefore open to judicial interpretation as indicated in two U.S. Supreme Court decisions: Carabell v. United States and Rapanos v. United States . However, because authority under the Act is limited to protecting only navigable waters, jurisdiction over these smaller creeks is not absolute and may require just compensation to property owners when invoked to protect downstream waters. Finally,

5589-418: The sewage in the wet well, dry wells are underground, confined spaces and require appropriate precautions for entry. Further, any failure or leakage of the pumps or pipework can discharge sewage directly into the dry well with complete flooding not an uncommon occurrence. As a result, the electric motors are normally mounted above the overflow, top water level of the wet well, usually above ground level, and drive

5670-403: The sewage pumps through an extended vertical shaft. To protect the above ground motors from weather, small pump houses are normally built, which also incorporate the electrical switchgear and control electronics. These are the visible parts of a traditional sewage pumping station although they are typically smaller than the underground wet and dry wells. More modern pumping stations do not require

5751-446: The surfaces painted, stained, or left natural; for interior surfaces, the finish is comparable to drywall in smoothness and can be finished using the same prime and paint procedure as is common for conventional drywall construction. If desired, the concrete can be given an architectural finish, where the concrete itself is colored and/or textured. Colors and textures can provide the appearance of brick, stone, wood, or other patterns through

5832-795: The treatment and removal of pollutants from sanitary and stormwater run-off. These precast concrete products include stormwater detention vaults , catch basins , and manholes . For communications, electrical, gas or steam systems, precast concrete utility structures protect the vital connections and controls for utility distribution. Precast concrete is nontoxic and environmentally safe. Products include: hand holes, hollow-core products, light pole bases, meter boxes, panel vaults, pull boxes, telecommunications structures, transformer pads, transformer vaults, trenches, utility buildings, utility vaults , utility poles, controlled environment vaults (CEVs), and other utility structures. Precast water and wastewater products hold or contain water, oil or other liquids for

5913-542: The upper parts of the canal, but if no suitable source is available, a pumping station can be used to maintain the water level. An example of a canal pumping station is the Claverton Pumping Station on the Kennet and Avon Canal in southern England, United Kingdom. This pumps water from the nearby River Avon to the canal using pumps driven by a waterwheel which is powered by the river. Where no external water supply

5994-504: The use of reusable formliners , or, in the most sophisticated applications, actual brick, stone, glass, or other materials can be cast into the concrete surface. Window and door openings are cast into the walls at the manufacturing plant as part of the fabrication process. In many applications, electrical and telecommunications conduit and boxes are cast directly into the panels in the specified locations. In some applications, utilities, plumbing and even heating components have been cast into

6075-469: The water upwards into water channels that finally drain into the sea. The Victorians understood this concept, and in the United Kingdom they built pumping stations with water pumps , powered by steam engines to accomplish this task. In Lincolnshire, large areas of wetland at sea level, called The Fens , were turned into rich arable farmland by this method. The land is full of nutrients because of

6156-431: The way the system of canal locks work, water is lost from the upper part of a canal each time a vessel passes through. Also, most lock gates are not watertight, so some water leaks from the higher levels of the canal to those lower down. The water has to be replaced or eventually the upper levels of the canal would not hold enough water to be navigable. Canals are usually fed by diverting water from streams and rivers into

6237-438: The well (for example during peak flow periods and wet weather) additional pumps will be used. If this is insufficient, or in the case of failure of the pumping station, a backup in the sewer system can occur, leading to a sanitary sewer overflow —the discharge of raw sewage into the environment. Sewage pumping stations are typically designed so that one pump or one set of pumps will handle normal peak flow conditions. Redundancy

6318-404: The wet well. Traditional sewage pumping stations incorporate both a wet well and a "dry well". Often these are the same structure separated by an internal divide. In this configuration pumps are installed below ground level on the base of the dry well so that their inlets are below water level on pump start, priming the pump and also maximising the available NPSH . Although nominally isolated from

6399-492: Was fabricated in Minnesota. Reinforcing concrete with steel improves strength and durability. On its own, concrete has good compressive strength, but lacks tensile and shear strength and can be subject to cracking when bearing loads for long periods of time. Steel offers high tensile and shear strength to make up for what concrete lacks. Steel behaves similarly to concrete in changing environments, which means it will shrink and expand with concrete, helping avoid cracking. Rebar

6480-913: Was not taken up extensively in Britain. However, it was adopted all over the world, particularly in Central and Eastern Europe as well as in Million Programme in Scandinavia. In the US, precast concrete has evolved as two sub-industries, each represented by a major association. The precast concrete structures industry, represented primarily by of the Precast/Prestressed Concrete Institute (PCI), focuses on prestressed concrete elements and on other precast concrete elements used in above-ground structures such as buildings, parking structures, and bridges, while

6561-487: Was therefore a public highway. He prevailed in the trial court when sued for trespassing by the owners of the property, a decision upheld by the New York Supreme Court, Appellate Division , Third Department. The land was found "subject to a public right of navigation, including the right to portage on plaintiff's land where absolutely necessary for the limited purpose of avoiding obstacles to navigation such as

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