In architecture, an airshaft is a small, vertical space within a tall building which permits ventilation of the building’s interior spaces to the outside. The floor plan of a building with an airshaft is often described as a “square donut” shape. Alternatively, an airshaft may be formed between two adjacent buildings.
What is the purpose of shaft in a building?
Shafts are critical to the construction and operation of tunnels of all types. They enable access from the ground surface to the tunnel level, for all tunnel types, including giving passengers access to mass transit and underground rail tunnels.
How do ventilation shafts work?
Ventilation shafts (or vent shafts) are similar to an exhaust fan for the wastewater system. Vent shafts allow air to enter and exit the wastewater system, which is important to help the system work properly.
What is fresh air shaft?
Air shafts are open spaces that are created for the purpose of allowing ventilation into an enclosed space. Some examples of air shafts are simply holes that are bored from an underground operation to the surface, thus ensuring a steady supply of fresh air into the cave or other underground area.
How do you open an air shaft?
What is an air shaft for?
Air Shafts, also commonly known as Air Bars or Air Mandrels, are used in the manufacturing processes for fitting into a core onto which materials such as paper, card and plastic film are wound.
Can a shaft be horizontal?
In railroading, a hole horizontally through a mountain was sometimes referred to as a shaft. If it took a long time to get completed, they would often be referring to the shaft into the mountain, and the locals might pick this up as the main term. However, this is likely a specialized case.
What’s the difference between duct and shaft?
As nouns the difference between duct and shaft is that duct is a pipe, tube or canal which carries gas or liquid from one place to another while shaft is (lb) the entire body of a long weapon, such as an arrow.
What is a shaft in tunneling?
Shafts are the doorways to the underground, serving as the location at which all material enters and exits. They vary in size and depth, and their design and construction are key to the successful completion of any tunneling project.
Does air get stale?
Stale air, at its root, is caused by a lack of ventilation. When air is confined to an enclosed room, pollutants, moisture and carbon dioxide can start to accumulate. You may also notice an increase of stale air in the winter months when we take additional care to stay indoors and seal our homes from the cold outside.
Why do miners need ventilation?
Ventilation systems are critical to ensure safe working conditions for our people underground. They provide fresh, cool air, and dilute and remove flammable gases as well as machine exhaust gases.
How do mines get air?
The concept is known as “flow through” ventilation: air is sucked into a shaft underground by fans on the surface, while extractors at the top of the mine drag the air back out. As it passes through the various passageways of the mine it brings with it the fresh supply of oxygen.
What are the types of ventilation?
There are three methods that may be used to ventilate a building: natural, mechanical and hybrid (mixed-mode) ventilation.
What is shaft architecture?
shaft::the structural member which serves as the main support of a column or pier. The shaft is between the capital and the base.
What is home Shaft?
a structure housing machinery and other equipment at the top of a mine shaft.
What is a elevator shaft?
Definitions of elevator shaft. a vertical shaft in a building to permit the passage of an elevator from floor to floor. type of: shaft. a vertical passageway through a building (as for an elevator)
What is a vent duct?
Ducts are conduits or passages used in heating, ventilation, and air conditioning (HVAC) to deliver and remove air. The needed airflows include, for example, supply air, return air, and exhaust air. Ducts commonly also deliver ventilation air as part of the supply air. A duct system is also called ductwork.
What is a firefighting shaft?
A firefighting shaft is a protected enclosure provided for attending firefighters containing a firefighting stair and firefighting lobby. If a lift is provided, this may or may not be a firefighting lift. These features are provided to assist attending firefighters in their operational duties.
What is a window shaft?
noun. 1A skylight or light well. 2A tall, narrow window opening; compare window slit . 3Architecture. A narrow column embedded in the arch of an ornamental window.
Why did old apartments have windows between rooms?
These windows have an appropriate name: tuberculosis windows. They were mandated by a 19th century city law requiring that tenements have cross ventilation to help reduce the spread of diseases like tuberculosis—the deadly “white plague” not uncommon in poor neighborhoods.
Did dumbbell tenements have windows?
Although the dumbbell did provide one window per room and airshafts admitted light and air into the floors of tenement buildings, because of the narrowness of the shafts and the height of the buildings, the shafts “simply [became] a stagnant well of foul air.” More seriously, “tenants often use the air shaft as a
Can you run a horizontal shaft engine vertical?
Only mower engines with a horizontal shaft can run for a sustained period on their side. Those with vertical shafts cannot. This is why hobbyists who repurpose horizontal shaft lawn mower engines for go-karts and other projects usually have to reposition the carburetor and other components for optimal performance.
Is a shaft a tunnel?
In civil engineering a shaft is an underground vertical or inclined passageway. As a drop shaft for a sewerage or water tunnel. For access to a tunnel or underground structure, also as an escape route.
What is the difference between a vertical and horizontal shaft engine?
Vertical motors—deemed “definite purpose motors”—are primarily used with pumps and other low-inertia, variable-torque applications. Horizontal motors are used in both variable-torque and constant-torque applications, including pumps, fans, compressors, cranes and conveyors.
What is the difference between vents and air ducts?
Laypeople sometimes refer to it as “vent cleaning,” though this term is a little reductive: air ducts are the vast system of (usually) metal tubes that run from your furnace throughout your home, distributing heated or cooled air; vents are simply the point where the ducts open into the house.
Is duct and vent are same?
Air ducts and vents are part of a building’s heating, ventilation, and air conditioning (HVAC) system. There are two types: supply vents and return vents. If your indoor air handler is the heart of the system, the supply ducts are the arteries and the return ducts are the veins.
What is the difference between air duct and air vent?
Supply vents suck in air that goes through the air ducts that finally ends up at the main heating or cooling unit. Return vents circulate the air back into your home.
Why is it important for shaft tunnel to be watertight?
The tunnel must be watertight to ensure integrity should the shaft seal cease to operate correctly. The forward end of the tunnel is fitted with a sliding watertight door to seal off the tunnel if necessary. The structure is made to be capable of withstanding the water pressure should the tunnel become open to the sea.
What is pipe jacking in construction?
Pipe jacking is a trenchless construction method to install product pipe through the ground on line and grade for new service lines, sewer tunnels and utilities. Pipe jacking is done from a launch shaft to a reception shaft with advancement provided by a hydraulic jacking frame located in the launch shaft.
What is a service shaft?
[′sər·vəs ‚shaft] (mining engineering) A shaft used only for hoisting men and materials to and from underground.
How do I get rid of bad air in my room?
Try these ten steps to bring a fresh, pleasant feel to your room as well as improve your room’s air quality.
- Identify the odor.
- Dust your room from top to bottom.
- Clean your floors.
- Open your windows.
- Bathe your pets.
- Wash your sheets and laundry.
- Clean all upholstery.
- Turn on a dehumidifier.
Why does the air in my room feel heavy?
Think about the rooms in your house that get the stuffiest. Stuffy air can sometimes indicate that a room retains moisture in the walls, ceilings, or floors. This is very bad for the health of your home; when moisture goes untreated, it breeds mold and mildew, which produces an unpleasant, dirty sock odor.
Is it bad to breathe stale air?
Stale air is indoor air that hasn’t had enough fresh air circulating through it. Breathing in unhealthy levels of stale air can cause skin irritation, headaches, and fatigue, and can be especially dangerous for individuals with underlying conditions like allergies or respiratory problems.
What happens in the wind house of a mine?
Part 1: The winch or hoist is in a winding house. This part of the system is used to wind or unwind the steel cable. The mine cage and the skips are lowered into the mine when a steel cable unwinds from the winch. The mine cage and skips are raised when the steel cable winds up again.
What is Homotropal ventilation?
Ventilation by a current of air traveling in the same direction as the flow of mineral out of a mine.
What is general body of air?
Nitrogen. 75.52% 78.09% Other gases like argon, krypton, neon, ozone etc. 1.284%