FloPlast offers a comprehensive choice of soil & waste systems and products, in a range of sizes and colours, to suit all tastes and applications.
The FloPlast reputation for technical excellence, quality and, competitively priced products have established the company as a leading supplier of Above Ground Plumbing Systems.
BS EN 12380 Air Admittance Valves
Kitemark: KM 512474
BS EN 1455-1 – Plastic piping systems for soil and waste DISCHARGE (low and high temperature) within the building structure – ABS.
Kitemark: KM 548614 - ABS Solvent Weld
BS5255 – Thermoplastic waste pipe and fittings.
BS EN 1329 – Unplasticized poly vinyl chloride (PVC-U). Specifications for pipes, fittings and the system.
Kitemark: KM 544331/KM 563460
BS EN 1453 – Plastics piping systems for soil and waste discharge (low and high temperature) within the building structure.
Kitemark: KM 572704 – Structured Wall Pipe
BS 4514: 2001 – Unplasticized PVC soil and ventilating pipes of 82.4 mm minimum mean outside diameter, and fittings and accessories of 82.4 mm and of other sizes. Specification
BS EN 1451-1 – Plastic piping systems for soil and waste DISCHARGE (low and high temperature) within the building structure – Polypropylene (PP). Specifications for pipes, fittings and the system.
BS EN 5254 – Specification for polypropylene waste pipe and fittings (external diameter 34.6 mm, 41.0 mm and 54.1 mm)
BS EN 274-1 – Waste fittings for sanitary appliances. Requirements
BS 5627: 1984 – Specification for plastics connectors for use with horizontal outlet vitreous china WC pans
BS EN 14680 – Adhesives for non-pressure thermoplastic piping systems. Specifications
BS EN 681 – Elastomeric seals. Material requirements for pipe joint seals used in water and drainage applications. Part 1 vulcanised rubber
BS EN 1366-3: 2009 – Fire resistant tests on service installations – Penetration seals (Fire Collars).
The four most common roof areas catered for are 'Single', ' Hipped', 'Valley' and 'Double Valley' as illustrated below.
The grey area denotes the area of roof that is calculated. For a standard semi or detached house, with a 'Single' roof design, two calculations, one for each side, are required. Other roof areas can be accommodated, by using a combination of these four modules.
Click on the link to the desired roof style, a calculator will appear on your screen, enter the dimensions, and the number of downpipe outlets as required. Once this has been completed click the calculate button. The dimensions or number of outlets can be altered by clicking back into the calculator boxes. For a new calculation or to clear the information already entered click the reset button.
The results appear, which give three scenarios, 'Outlet with no angles', 'Angle further than two metres from outlet' and 'Angle nearer that two metres from outlet'. In each case the result will also give you the gutter suitable to each scenario if the outlet(s) are placed at the end or the centre of each gutter run. The results page is printable by clicking on the 'Print' button on the calculator.
N.B. This has been calculated using the maximum achievable flow rates for each system. If however the flow rate in litres per second comes near to the maximum for the suggested system, as in the table on the flow rate main page, then FloPlast advise that the next largest system is used, or an additional downpipe is added to the system.
For further assistance in sizing roof areas and gutter flow rates please contact FloPlast Technical Advisory Service on (01795) 431731.
