The detailed design of roads and sewers is critical to the function of the site along with the final site levels and layout. Early involvement during the planning process is important to ensure that the development can be delivered as intended within the planning application.
To meet the needs of any planning authority a drainage assessment will be required to be submitted along with planning applications for small to large developments.
A drainage assessment should be carried out as soon as the site layout has been established however. This allows for a drainage strategy to be investigated along with highlighting any potential issues with the layout. Sufficient space for SUDS schemes and levels or location of existing sewers and outfalls may require changes to any layout.
Foul water drainage for developments should be investigated at an early stage to ensure there is a suitable sewer capacity, location and levels with which to service the site.
The design of the sewers must then be carried out to comply with Sewers for Scotland 3rd Edition and submitted for technical approval.
Local authorities and SEPA now seek detailed drainage proposals and calculations with regards to the storage and management of surface water before considering any planning applications for development.
Sustainable urban drainage systems (SUDS) designed with reference to the CIRIA manuals are the recommended method for the management of surface water. Features such as roadside filter drains or swales, private soakaways and detention basins are used to form a management train allowing for the surface water to be discharged at an agreed pre determined rate.
We use the latest drainage design software to provide a full design for both foul and surface water drainage for any size of developments.
With Designing Streets now becoming more prominent with local authorities, it is important that the engineering design takes place in conjunction with the design of the overall site layout. This ensures that there are no dramatic changes to the layout caused by engineering and roads authority restrictions.
We use the latest road design packages to provide a full and detailed design for submission for Roads Construction Consent.
Single House Developments
Where there are no public sewers available for connection, a ground investigation is require to establish the existing conditions. Infiltration and percolation testing is carried out to test the suitability for soakaways and to allow for the design of the systems.
GMC Surveys are on The Moray Council List of Approved Certifiers for Infiltration Systems Serving Septic Tanks. We carry out full site investigations providing detailed reports including the final drainage design.
If you are interested in any of the above services please contact us.