ECL are resellers and developers for the Micro Drainage
WinDes suite of software. It is complementary to our 
package System 1 which can be added to dependant
on requirements.
Core System
System 1 comprising:
Storm
A range of Rational Method formats is supported to design networks to pipe
full conditions. Any shaped section may be analysed. Results are updated on
input with instant feedback. Typically pipes are designed to accommodate
return periods of between 1 and 5 years.
Foul
Main drainage design methods and discharge unit methods (EN752) are
supported for domestic, industrial and process drainage. The procedure for
foul (or sanitary) drainage design is similar to storm drainage. Simulation
should also be used if the system is combined.
Storm and Foul support a powerful optimisation function.
A drainage network may be redesigned to a required cover, minimum flow
velocity and/or a high outfall level using this function. Once designed the
data is passed to Schedules, Plot or PDS Site Developer for further analysis.
Schedule
Manhole sizing, pipeline schedules, manhole schedules, and setting-out data
are all output by this module. In common with other modules these details
can be provided in different formats and output to hard copy or spreadsheet
software.
Plot
Plotting longsections (or profiles) is fully supported. Alternatively PDS
software maybe used to generate drainage longsections that relate to a
digital model and/or combined road and drainage longsections.
Optional Modules
1) Source Control/Storage Design
Storage design with infiltration (optional) is often required in drainage
networks to reduce the volume and rate of runoff. Thousands of
permutations of soakaways, lakes, tanks, swales, detention basins, porous
car parks, etc. etc. may be chosen and optimised. A design guide takes you
step by step through the procedure.
The quick storage estimate facility is invaluable for examining feasibility or
validating designs.
2) Simulation
The network, designed in Storm and Schedules, is passed for this final stage
of hydraulic analysis to Simulation.
To test the ultimate capacity of the system it must be surcharged to the
point of flooding. In order to achieve this Simulation allows extreme rainfalls
to be analysed.
Pipes that have been sized for working loads (pipe full conditions) of between
1 and 5 years RP in Storm should be tested for return periods in the range of
20 to 30 years in Simulation.
Storage and SC devices can also be dragged and dropped onto the network for a
fully integrated analysis.
3) APT
The network must be tested for a wide range of winter and summer rainfall.
The use of storage and SC structures may increase the duration of critical
events. Although winter storms are less intense, the volume of winter runoff
must be considered.
In addition, the effects of climate change could be critical and it is now
possible to evaluate and mitigate its possible impact.
It is also important that the engineer thinks beyond the design specification
of the system e.g. no flooding for 30 year RP. Failure modes must be examined.
A system that is OK for a 30 year RP storm but fails catastrophically for
30 years RP + 5% is an unsatisfactory design. In the event of failure flood flow
paths should be illustrated. Sensitivity analysis is made simple with APT.
All these functions, together with audit facilities, are provided in the Advanced
Productivity Tools. Hundreds of scenarios may be simulated in one run and their
impacts summarised in clear reports with critical analysis.
4) CASDeF
If controls need to be adjusted or storage redesigned and distributed then CASDeF
can do it. It will run any number of simulations to automatically size controls and
storage.CASDeF provides the most efficient means to examine options and
alternative designs.
For more information about Micro Drainage please contact ECL.
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