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Fire fighting operations - high rise buildings:
Inlets that allow the fire service to supplement to water to the sprinklers and to the fire mains are useful additions to the measures that assist fire fighting.
When fire fighting operations are being undertaken, doors to the fire fighting staircase are bound to be held open (by hose) so either ventilation or pressurisation must be provided to stop the stairs becoming smoke logged. Elements of a pressurisation system are automatic opening vents on each floor.
These open to keep the area where the fire has started close to ambient pressure so that a pressure difference can be maintained to the staircase (the staircase being at a slightly higher pressure). The vents also allow a continued through-flow of air when doors are open for fire fighting. If the vents do not open or are obstructed because new internal partitions have been constructed, for example, then the space where the fire is will become pressurised, losing the pressure difference between it and the staircase and the through-flow of air when the door is open will not take place allowing smoke to enter the stairs. Vents are normally required on at least two faces of the building to allow for positive wind pressures on one face of the building.
#What are the types of pumps used in oil industry? How to perform fault finding report?
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Allowances for pattern : A pattern is always made larger than the required size of the casting in order to allow for various factor, such as shrinkage, machining, distortion and r
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Explain and identify the different sources of finances which are available to businesses and which sources of finance are internal sources and which are external sources?
application of newton rings.
OUTPUT CHARACTERISTICS: Figure shows a "Common Emitter" amplifier stage. Common Emitter Amplifier Stage With no base/emitter bias applied, there will be no collector
Parasitic resistances This is particularly noticeable if the transducer is a long way from where the power supply is located and if the transducer resistance is small.
assignment
CYLINDRICAL COORDINATE
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