Micro Drainage Simulation Module
Hydraulic Analysis of Drainage Systems
We use XP Solution's Micro Drainage simulation software to analyse the hydraulic performance of a proposed or existing drainage system. Typically the software would be used to:
Capability of Software
The simulation software allows the modelling of surface water, combined and foul water drainage networks under most flow conditions. It can also represent ancillary structures commonly found in drainage systems including weirs, orifices, pumping stations and attenuation tanks and ponds. The software also allows the representation of infiltration, the modelling of 'looped systems', the use of observed rainfall together with FSR and FEH design rainfall.
Storm simulation for proposed surface water sewers
Although we design surface water drainage systems using System 1, we would then use the simulation module to check that the system operates satisfactorily for various conditions. These are, no surcharging for the 'pipe-full' design criteria, no flooding for the critical duration 1 in 30 year design storm and finally that any flooding caused by extreme rainfall does not affect properties or cause other damage. These are requirements of 'Sewers for Adoption' but we regard them as being generally good practice and so we would apply them to all surface water drainage systems.
Model of existing drainage system
Following construction of a model of an existing drainage system it is good practice to carry out some form of verification of the model. We would generally follow the Urban Drainage Group (formally WaPUG) 'Code of practice' in this respect.
As well as being used to analyse an existing drainage system's performance, for instance to investigate the causes of a flooding problem, a model can also be used to test various options to solve the problem. This is a better approach than assuming the cause of the flooding, construction a solution and then finding at a later date that the problem still remains.
Cost effective and appropriate design
The simulation module allows us to model how a proposed or existing drainage system would operate in reality. This then allows us to test various
options to improve matters which results in a more cost effective and appropriate design.