BS EN 12056-3 PDFSeptember 7, 2020
Part 3 of BS EN By Brian Whorlow BA Hons, IEng, FCIPHE. Consultant, training course presenter and technical author. Canterbury, UK. Roof Drainage Calculations to BS EN Gravity drainage systems inside buildings – Part 3: Roof drainage layout and calculation. Rainfall Intensity. BS EN Gravity Drainage Systems Inside Buildings – Part 3: Roof Drainage, Layout and Calculation.
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Roof Drainage Calculations – Notes
Your basket is empty. Search all products by. For the UK, the maps in the standard show the intensity for various return periods from 1 year to years.
Where a wall or walls vs on to the roof, for example from a higher building, then more detailed analysis of the catchment area is required. For valley and parapet gutter both results for straight and tapered outlets are given. Compare the actual area drained with the allowable area drained. Accept and continue Learn more about the cookies we use and how to change your settings. Schwerkraftenwaesserungsanlagen innerhalb von Gebaeuden.
If there is a town or towns that you would like to be included please let us know. For flat roofs the design head of water has been taken as 35mm. The effect of introducing gratings or guards is to reduce the catchment area by up to half.
For square outlets separate calculations will be required. Although the depth of the gutter has most effect on the catchment area, if the gutter size or shape 122056-3 significantly from that shown below enn a separate calculation will be required.
Roof drainage, layout and calculation Status: Systeme d’evacuation des eaux pluviales, conception et calculs. Take the smart route to manage medical device compliance.
Where your project is not near one on the towns chosen, then separate calculation will again be required. For eaves gutters only the results for straight outlets are shown.
BS EN 12056-3:2000
Systeme d’evacuation des eaux pluviales, conception bbs calculs Title in German Schwerkraftenwaesserungsanlagen innerhalb von Gebaeuden. The faster, easier way to work with standards. The catchment area is given for outlets with and without gravel guards. The roof area shown in the tables is based on outlets with no gratings or guards. Sign up for our monthly news letter.
If the allowable area is greater than the actual area then the gutter system is satisfactory. The calculated capacity is based on the gutter being: Pitched roofs The catchment area has to be multiplied by the pitch factor to obtain the allowable area drained. Catchment Area The catchment area given in the tables is based on the least of: Nominally Level Freely discharging maximum flow capacity. As an aid we have chosen a selection of towns throughout the UK, and determined the design rainfall intensity for each town as follows: Check out our web directory of the UK roofing eb cladding industry www.
Calculate the actual area drained from the equations given below. If there is a town or towns that you would like to be included please let us know Gutter Types The gutter shapes and sizes shown below have been used in the preparation of the tables.
The diagrams below shown the size and types of outlets shown in the tables, if other sizes or types are bz be used then separate calculations will be required. For other design rainfall intensities separate calculations will be required. Hs may find similar items within these categories by selecting bx the choices below:.
The catchment area given in the tables is based on the least of: Click to learn more. Water supply and waste systems buildingsWaste-water drainage, Drainage, Buildings, Rainwater control systems, Layout, Mathematical calculations, Gutters, Rainwater pipes, Hydraulic tests, Performance testing. Find Similar Items This product falls into the following categories.
Use of Tables To use the tables: Return period of 4. Customers vs bought this product eb bought BS EN The gutter shapes and sizes shown below have been used in the preparation of the tables. Note the previous standard gave rainfall intensity figures in mm per hour per square meter for 2 minute storm event. Flat Roofs For flat roofs the design head of water has been taken as 35mm The catchment area is given for outlets with and without gravel guards.
Parapet or Eaves Gutter Pitch. Where there are offsets or horizontal runs of pipes, the a separate calculation will be required to 1205-3 the capacity of the pipe system from roof level to ground level.
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