ARP’s NEW Rainfall Calculator Application for Windows PC and Tablets

ARP’s Rainfall Calculator

In accordance with BS EN 12056-3:2000 the new ARP Rainfall Calculator allows you to correctly size gutters and downpipes on your project.
The calculator’s build-in features demonstrate: specific rainfall data by location; individual roof sizes and design; best gutter profile and downpipe size; outlet position and leaf traps.

To download the Free Rainfall Calculator, please complete the form below.

    The ARP range of calculation tools on the drainage software are based on bs en 12056. Please check that the data has been correctly interpreted after use. Any person but in particular any professional including architects, engineers and other users of this software must satisfy themselves in respect of the adequacy of the design produced either in whole or in part as a result of using the ARP calculation tools or any of them. For complicated calculations you are advised to contact the rainwater or drainage technical team of ARP. Aluminium roofline products limited shall not be liable for any direct or indirect loss or damage suffered or incurred as a result of or in connection with the use of any of the calculation tools or the use of any information generated as a result of the use of the calculation tools including for the avoidance of doubt any financial loss or damage, loss of profits, loss of contracts or loss of goodwill.