Coupling definition is - the act of bringing or coming together : pairing; specifically : sexual union. We develop, design, manufacture, test and provide couplings as an all-inclusive coupling solution to our customers. Flexible rubber couplings are for use underground. Starting with clean pipes makes a big difference. For more than 75 years, Dixon Quick Coupling has been recognized as a leading manufacturer of hydraulic and pneumatic quick disconnect couplings. Refer to Victaulic publication
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Commercial Roof Drains and Drainage SystemsVIDEO ON THE TOPIC: The proper assembling by using taper union - Malleable Iron Fittings
Commercial buildings often have flat or low-sloped roofs that need special drainage solutions. This article will give you an overview of the types of drainage systems suitable for commercial buildings and the materials and components of those systems. The basic function of a roof is to protect the building from the elements. As the roof collects rain, the water must be transported quickly and safely away by a drainage system. Commercial flat roofs need interior drains and scuppers to collect water instead.
Though many think flat roofs are completely level, they are actually designed with a slight pitch. Architects and structural engineers add the pitch in order to create positive drainage. Positive drainage should allow the water to drain off the roof hours after it stops raining. Architects must also take into account the weight of water on the roof, including near the drainage areas.
Water adds significant weight to a building, especially if the drains are clogged or poorly implemented. Backup drains can mitigate this problem. The backup drains are positioned higher than the main drain, just like the backup drain in your bathtub.
Water may also collect on your rooftop in areas where it is too flat to have positive drainage or where a depression has formed. This water collection is called ponding. Over time, materials, such as wood and concrete, will sink under the load of the water, and insulation may compress. This will create low points on the roof, which may collect even more water.
Positive drainage should dry the roof completely in a day or two after a rain, assuming the weather holds. If your roof still has ponding after this time period, then it and the drainage system need to be assessed by a roofing professional. Water collection can be more serious than ponding.
Overflow can create leaks by pushing water into areas it would not normally go. The severity of the damage depends on where the water ends up. All drainage systems should have backups to prevent overflow in the case of severe rain or in the case of a clog in the main drainage system.
While each drainage system will be different, to best accommodate the roof it drains, there are only two primary drainage systems that are suitable for commercial flat roofs or low slope roofs:.
A gravity drainage system simply relies on gravity to move the water from the rooftop to the ground. Usually, a gravity drainage system has four sloping drain segments that connect to an interior drain, which then carries the water outside of the building. A gravity drainage system on a flat roof differs from the gutter system you find on residential roofs in two key ways:. Gravity drainage systems are only recommended for flat or low-slope commercial roofs that have a surface area of less than m 2 per drainage point.
Larger roofs collect more water that may not drain quickly enough with just a gravity system. Those roofs benefit from siphonic drainage systems. A siphonic drainage system has, on the drainage points, a baffle that prevents air from entering the system. As a result, the pipes have lower atmospheric pressure than the outside environment. Thus, when water enters the drain, it meets an area of lower pressure in the drain and is pulled in faster than it would be by gravity alone.
In fact, a siphonic drainage system can achieve times the drainage speed of a gravity drainage system. In a siphonic system, several drainage points will meet up and deliver the water out of the building. This allows for more room for other building features below the drainage system.
Also, the roof itself may have a smaller slope and still drain properly. If the water on these roofs does not drain fast enough, then it can add significant weight to the roof. In fact, a single inch of water on a square foot area of the roof weighs 2, pounds.
That is a challenge for architects to plan around, so roofs need to drain water as quick as possible. Siphonic drainage systems are generally recommended for larger roofs of m 2 or more. Both types of drainage systems have similar components. Armed with knowledge, you will be able to make the best decisions possible for your drainage system:. If water collects in one spot in the middle of your roof, then installing an interior drain there to move the water is a good solution.
Interior drains work best when the roof is sloped to allow water to gather at the drainage point. Different drainage systems require slightly different interior drains. Your roof might need a high-capacity drain, or a dual-outlet drain, to move more water off the roof faster. Another interesting interior drain modification is a sump pan. These square pans create a recessed drain, which draws water towards drains that otherwise might be too high for smaller amounts of water to reach.
Edge drains: Edge drains collect water at the edge of the roof. To understand the need for edge drains, think of a public shower. Just like a commercial roof, the ground in a public shower is flat. If enough shower heads are on, the water will spread out away from the drains, and a backlog of water will develop. To solve this problem, professional roofers install edge drains to catch that excess water and ensure that no one on the sidewalk below the roof gets splashed.
There are a few different types of edge drains: scupper drains, gutters and roof drain leaders also called downspouts :. Scuppers need to be checked for ice, as they are normally colder than the rest of the rooftop, being up on the wall and further away from the heat of the building.
Those who install new, thicker roof membranes may end up blocking their scuppers. In that case, scuppers should be moved up the wall or replaced with higher scuppers. You also have to consider the material these parts are made of.
Drains and pipes of different materials can be of vastly different quality and can solve different problems you might face with your drainage system. Each of these materials has its own benefits and drawbacks.
Interior drainage piping made from any of these materials will require insulation to keep the water from freezing in cold temperatures. Why do you need to insulate your drainage system in the first place? Drains are roof features that penetrate the roof and may allow conditioned air to escape. Without roof insulation , drains could cost you a fortune in heating and cooling costs.
Also, water may freeze in the pipes and damage your system. How much insulation your drainage system needs will depend on your climate. Now, in order to meet the value within four feet of the drain, most roofs will need considerably thicker insulation, or a new type of insulation, such as polyiso insulation.
It is incumbent upon the roofing professional and building owner to find out which insulation rules apply to their drainage system and to abide by them. Your locality may have also implemented changes to drainage rules to help deal with urban runoff problems. Rooftops in dense city areas collect a large amount of water and not all municipalities have siphonic drainage systems that can move this vast volume of water quickly. As this water is untreated, it may be a health risk.
To prevent overloading their drainage system, municipalities may require that commercial buildings install control flow drains. For a few hours after the rain, a commercial roof with a control flow drain will act as a reservoir, holding the water to prevent damage to property and wildlife.
Another solution that can help storm-water management efforts is vegetative roofing , which can absorb vast quantities of rainwater. Building owners will also benefit from familiarizing themselves with the basic requirements of drainage system maintenance. On an annual or semiannual basis, all drainage systems should be inspected and cleaned. If your roof has a history of drainage clogs or problems, then you should have it inspected and cleaned even more frequently.
Further, if the building you manage or own is in an area where trees shed their leaves every fall, then one of these cleanings should take place at the end of autumn when your system will collect the most debris. Any trees or other landscaping features that are close to your roof should be trimmed. While some roofing professionals may perform this task, you may find it better to hire a landscaper to do this work before the roofing professionals arrive.
If you wait until after, then the landscapers may unknowingly leave debris on the drain. Commercial Roof Drains and Drainage Systems Monday, April 15 Commercial buildings often have flat or low-sloped roofs that need special drainage solutions.
Ponding, or any standing water on a roof, can contribute to several different problems: Birds: While birds most commonly nest on rooftops, standing water may encourage them to drink on your rooftop instead. Anything you can do to make a roof less attractive to birds is a smart investment that will limit their damage. Mosquitoes: Small ponds of standing water are breeding grounds for mosquitoes.
Plant growth: Algae and even larger plants will take advantage of standing water, and their growth can make cleaning the drain more challenging, contributing to clogs. Fungal growth: Fungus prefers wet conditions and may grow in standing water. It may also damage the roofing materials. Wear on the roofing materials: Most roofing membranes will deteriorate under standing water.
While each drainage system will be different, to best accommodate the roof it drains, there are only two primary drainage systems that are suitable for commercial flat roofs or low slope roofs: 1. Gravity Drainage A gravity drainage system simply relies on gravity to move the water from the rooftop to the ground.
A gravity drainage system on a flat roof differs from the gutter system you find on residential roofs in two key ways: A flat roof may use interior drains to collect water from the centre of the roof. These drains are like the drain at the bottom of your shower, except that the roof drain has a larger strainer to protect it from debris. Still, the function of the two drains is the same.
Water falls on the roof, and gravity draws it into the drain and down the pipes. A residential roof collects water in the gutters and the downspouts. All of these pipes are on the outside of the home.
However, the drainage system on a commercial building needs internal pipes to connect to the internal drain. This makes the drainage system a little more complicated and reduces the room available for other building systems directly beneath the roof.
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Ci La Class Pipe Catalogue
Commercial buildings often have flat or low-sloped roofs that need special drainage solutions. This article will give you an overview of the types of drainage systems suitable for commercial buildings and the materials and components of those systems. The basic function of a roof is to protect the building from the elements. As the roof collects rain, the water must be transported quickly and safely away by a drainage system. Commercial flat roofs need interior drains and scuppers to collect water instead. Though many think flat roofs are completely level, they are actually designed with a slight pitch. Architects and structural engineers add the pitch in order to create positive drainage.
SANITARY DRAINAGE SYSTEM INSTALLATION REQUIREMENTS
Bulk storage of portable containers of flammable liquids shall be in a separate, constructed building detached from other important buildings or cut off in a standard manner. Where entire dependence for emergency relief is placed upon pressure relieving devices, the total venting capacity of both normal and emergency vents shall be enough to prevent rupture of the shell or bottom of the tank if vertical, or of the shell or heads if horizontal. If unstable liquids are stored, the effects of heat or gas resulting from polymerization, decomposition, condensation, or self-reactivity shall be taken into account. The total capacity of both normal and emergency venting devices shall be not less than that derived from Table F except as provided in paragraph i 2 v E or F of this section. Such device may be a self-closing manhole cover, or one using long bolts that permit the cover to lift under internal pressure, or an additional or larger relief valve or valves. The wetted area of the tank shall be calculated on the basis of 55 percent of the total exposed area of a sphere or spheroid, 75 percent of the total exposed area of a horizontal tank and the first 30 feet 9.SEE VIDEO BY TOPIC: How to Solder Copper Pipe The CORRECT Way - GOT2LEARN
Find the product you need in seconds. Fernco shielded couplings provide maximum transfer of pressure from the clamps, to the gasket, to the pipe. Fernco XL Coupling built longer to be stronger, and more durable than any other coupling in the market. Skip to main content. Where to Buy Your Expertise Level? Read more Fernco App Find the product you need in seconds.
The presence of iron in everyday life began in about BCE, encompassing a wide range of uses from farming implements to weapons of war. Blacksmiths became a critical profession, working with iron to change its properties and shape the material into tools. Another milestone for metals would follow—the Industrial Revolution changed the way metals were produced and worked into products, including iron. There are two major types of iron produced: wrought iron and cast iron.
The size of the boiler is matched to the size of the facility. The ideal size for a boiler is one that just copes adequately on the coldest day of the year. This is due to the way systems used to be calculated with a card calculator. These were always over-calculated "to be on the safe side. This allows smaller radiators and less water in the system, which in turn, means a smaller boiler and reduced costs for both installation and fuel bills. The boiler does not directly govern the amount of radiators fitted to the system. It is the power of the pump and circulation of the water through adequately sized pipes that determines the number of radiators you can have. But the total output of all the radiators, pipes, and cylinders determines the size of the boiler. The boiler is not the heating system; it is only one of the parts in the global heating system. As shown in '''Figure 1''', a heating system consists of four main parts:.
Polyvinyl Chloride (PVC)
Was your condominium or apartment building built before ? Are you experiencing regular toilet stoppages and backups, tree root intrusion, or sewer odors? If so, the long-term solution is NOT having your sewer lines snaked every few months. The older the building, the more property managers and board members need to be aware of the infrastructure systems within the building. Did you know? In a multi-story building such as a condominium complex, the sanitary drainage system consists of three main components — vertical stacks, branch lines and horizontal underground lines. Stacks are vertical lines of pipe that extend from the horizontal building drain under the slab or in the basement up to and through the roof of the building. Although the general direction which these pipes run is vertical, they may be offset or run in a horizontal position on upper floors and still be identified as a vertical stack. In the industry these pipes are either known as soil stacks, waste stacks, or vent stacks depending on the purposes which they serve.
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Introduction to Cast Iron: History, Types, Properties, and Uses
While there are a variety of types of cast iron, the most common is gray cast iron, and these guidelines are directed toward this type of material. A few facts about cast iron help in understanding the welding challenges. The high carbon content causes the carbon to form flakes of graphite.
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