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OTG Hydraulic Design

Stormwater · Civil drainage · Flooding

A stormwater management plan the building can actually be built from

Roof, balcony and building stormwater documented as hydraulic services so overflow, pipework and the discharge point are resolved before construction, not discovered on site.

Request a fee proposalCall 0436 284 837

Or email admin@otghydraulicdesign.com.au

OTG stormwater schematic showing three buildings with roof gutters and downpipes feeding in-ground pipes that carry rainwater to a round rainwater tank.
How a stormwater system works: rain from the roof gutters runs down the downpipes into in-ground pipes, which carry it to a rainwater tank. A stormwater management plan sizes and documents each part before construction.
OTG project drawing showing roof drainage and soakwells for a multi-unit development.
Roof drainage and stormwater design for a multi-unit development by OTG Hydraulic Design.

When this lane applies

Architects, builders and certifiers who need a hydraulic stormwater management plan for the building: gutters, downpipes, overflow, internal rainwater pipework and how the site drains from the building to a legal point of discharge.

OTG can also assist with civil drainage and flooding. Send the project brief and any authority requirements so we can confirm the scope, deliverables and assessment methods.

Outcome

A documented hydraulic stormwater management plan for the services in scope: collection, conveyance, overflow and connection, coordinated with the rest of the hydraulic set. Efficiency Unleashed means fewer RFIs about falls, overflow and where the water actually goes.

We do not invent project names or hit rates. The test is whether the documentation survives coordination and construction.

How we work

  1. Confirm the scope across building stormwater, civil drainage and flooding.
  2. Review the architectural set, levels and the legal point of discharge you have.
  3. Issue a fee proposal with scope, exclusions and timing.
  4. Design and document. Construction-stage questions are part of a scoped engagement.

Call our office on 0436 284 837 or email admin@otghydraulicdesign.com.au.

Objections

Can you assist with civil drainage and flooding? Yes. OTG can undertake civil drainage and flooding work. Send the site information and project requirements so we can scope the engagement.

Does the project require a particular modelling method? Send the authority requirements and any specified modelling method or software. We will confirm the appropriate approach and deliverables in the fee proposal.

Is this just roof drainage? Roof drainage can form part of the plan. Site stormwater, civil drainage and flooding can also be included in the agreed scope.

Request a fee proposal

Send the current drawings, levels, the discharge point and any authority requirements. Let us know whether building stormwater, civil drainage or flooding is in scope.

Request a fee proposal or call 0436 284 837.

Next step

Request a fee proposal

Send the drawings, the programme and the hydraulic services in scope. We will come back with a clear proposal.

Request a fee proposalCall 0436 284 837