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PROJECT
All copper piping for domestic water reticulation was Class 0 460 / 2 LIGHT and piping is brazed with solder and excess filed and cleaned . All hot water supply and return pipes inside plumbing ducts are insulated as stated before .
All cold water , hot water and hot water return piping is colour coded with directional arrows every ten metres . All pumps , tanks and other equipment is suitably labelled .
Expansion loops exist on all long runs longer than 30m to allow for temperature expansion of the copper pipes .
All valves , balancing valves , mixers , and strainers are of brass as specified by the compulsory standards .
Natural Gas Reticulation Natural Gas Piping was installed throughout the residential building to supply natural gas to the main gas boilers , all kitchen gas hobs , gas braais , fireplaces and to the Restaurant located on Parkade 1 . The main gas supply from Egoli Gas is located on the Northern side of the building ( Tyrwhitt ave ). The main gas supply pipe entering the building in Basement level two , rises up into the metering chamber on Basement one . The metering chamber consists of a gas meter , gas regulators with gas filters and gas pressure relief valves .
Renderings ACS Consulting Engineers
The Tyrwhitt Gas Boiler plant room
Gas Boiler plant room The Ø65 supply pipe to the gas boilers was installed with a quarter turn emergency shut off valve outside the plant room with a permanent sign reading “ GAS VALVE ”. The gas boilers are supplied with their own gas trains by the Gas Boiler Supplier ( Combustion Technologies ) which the Natural Gas Piping contractor will connect to .
Apartment supply The main Ø100 pipe rises in the gas shaft to Parkade 2 where it reticulates to all the gas riser pipes to the apartments . Each riser pipe has been sized to accommodate the required gas flow for the appliances it serves . There are in total 19 riser pipes . Each riser serves all apartments vertically aligned .
Renderings ACS Consulting Engineers
The Tyrwhitt Hot Water Tank Plant room
Pressure gauges are installed at the highest point of each gas pipe riser for observation purposes . These are in the service cupboards . Residential floors 1 to 8 are identical in layout and all apartments on these floors have gas hobs which require a gas supply . Gas supply to the apartments is done by branching off the main riser pipe with a 20mm steel pipe connecting to a gas regulator and meter in a service cupboard just outside each apartment , before entering the apartment .
Residential 9 to 11 are similar to the floors below apart from the two C1 units which have gas hobs and braais .
Residential 12 and 13 are the Penthouse floors . Penthouse units P2 , 3 and 4 are equipped with a gas hob , fireplace and braai . Unit P1 does not have a braai but does have the gas hob and fireplace .
www . plumbingafrica . co . za @ plumbingonline @ plumbingonline @ PlumbingAfricaOnline April 2022 Volume 28 I Number 2