Three Waters Engineering

Potable water supply, wastewater and stormwater services are often described as ‘The Three Waters’. In the vast majority of developments, these public networks will be required to be extended into the site to service each newly created lot.

Flood Reporting

Overland flowpaths, open watercourses and natural streams collect and convey stormwater runoff and are more commonly located within low lying valleys where rain waters can converge. They can also be common in flat areas and are known as flood plains. The public piped stormwater networks have a limited capacity and in extreme storm events that exceed that capacity ‘overland flow’ is likely to occur. If an ‘overland flowpath’ is identified within your site a flood report will be required to determine the extent and volume of flood waters through your property as part of any development that you are planning whether that is a subdivision or alteration to the existing building within the site.

Earthworks design

Using the latest AutoCAD Civil 3D software Engineous Consulting is able to calculate and confirm the volume of cut and fill and earthworks volumes within your development. As part of the design of the building platforms and roading levels the volume of earthworks can be optimised to create an efficient design to minimise the amount of cut leaving the site, or fill being brought in.

Roading Geometry Design

Using the latest AutoCAD Civil 3D software Engineous Consulting is able to design roading networks as well as private right-of-ways within your development. We are also able to confirm the underlying soil strength (Scala Penetrometer testing) and then complete the design of the pavement structure.

Detention Tank Design

Detention tanks are becoming more common place with the intensification of developments within the Auckland Region. The old public stormwater networks are not able to cope with the additional demand placed on them, and Council may require your development to have detention tanks installed to reduce this peak demand. Council have also identified Stormwater Management Areas (SMAF) where re-use is required (stormwater being re-plumbed to supply toilets and laundries) as well as detention in certain areas within the region.

Construction monitoring

Following the Resource Consent approval you are also required to obtain Engineering Plan Approval (EPA) from Council before construction can start on site which will include the public water supply and wastewater and stormwater networks as well as common accessways and carparks. This will be completed by specialist drainlayers and contractors and is required by Council that engineering consultants are engaged by developers to monitor this work to ensure that standards of workmanship are met and that council and WaterCare are provided with an asset that is fit for purpose for the next 100 years.

 

 

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