Hksar buildings department.
Building water tank on roof.
This article describes rooftop water tanks and cisterns and tower mounted water storage tanks where they are used how they work and the use of booster pumps to improve water pressure in buildings with rooftop water storage tanks.
The tank is filled with water from the mains system by basement pumps.
This structure supplies water pressure to floors at higher elevation than public water towers.
In a typical roof tank system the city s water main enters the building and is connected to a roof tank fill pump in the basement.
No in fact this takes 4 of the metal water tanks that will be interlocked together.
With a water tank storing water on the building s roof gravity does the work in distributing water to the lower floors.
Gravity takes the water from the roof tank down into the building as needed.
Electricity in the form of an electric pump in the basement and sometimes an additional sensor within the tank itself ensures that the water level in the tank stays high enough.
The construction of a new tank or the rebuilding of an existing tank is a considerable undertaking but when done properly reduces downtime for building owners.
Each of these tanks is hooked up to a water pipe in the building and similar to a toilet when water in the tank does down a device signals the water.
A rooftop water tower is a variant of a water tower consisting of a water container placed on the roof of a tall building.
A rectangular steel tank holds more water than a round wood tank both having the same height he says noting that replacement tanks of either material cost around 50 000.
A video made by a chinese user after lam s death and posted to the internet showed that the hotel s roof was easily accessible via the fire escape and that two of the lids of the water tanks were open.
This produces a large water column and the weight of this water produces very high pressure.
As building height increases the vertical height of its plumbing also increases.
And this video does a great job at walking you through the build from start to finish.
Rooftop tower mounted water storage tanks.
We include water tower design considerations codes and standard references citations.
The basic rain barrel.
The fill pump sends water up through a supply riser to one or more wood roof tanks usually between 5 000 and 10 000 gallon capacity.
Facilities on roof water tank contractors can only undertake the relevant classes or items of minor works for which they have been registered.
Apart from the question of how she got on the roof others asked if she could have gotten into the tank by herself.
Although building heights and population stats have continued to grow over the years the use of rooftop water tanks is still the most efficient and practical way to provide water to residents.
