Hay Street Upgrade

Hay-Street-Upgrade

Project Details

As part of the Urban Forest Plan Infill Street Tree Planting Program the City of Perth has designed and installed a range of innovative and bespoke water retention tree pits across the city.

WSUD Category: Tree pits

CriteriaInformation
Development Type:Infrastructure
Function/Driver:Water quality
Government Area:City of Perth
Site Context:Well-draining soils
Year Completed:2020

Overview

As part of the Urban Forest Plan Infill Street Tree Planting Program the City of Perth has designed and installed a range of innovative and bespoke water retention tree pits across the city.

Each pit is designed to capture and filter stormwater run off from city streets to improve water quality and promote a sustainable approach to water management within the urban forest.

The pits help deliver additional water to our street trees. This promotes the development of large and healthy tree canopies which cool the city and creates green, shaded and attractive city streets.

Design Details

  • The East End Revitalisation program aims to improve the environment, character and quality of the East End precinct through the revitalisation of the streetscape in Hay, Pier and Irwin Streets. This includes the planting of approximately 90 new street trees where none previously existed.
  • To help maximise new tree establishment and health, the City has designed and installed a ‘in road’ water retention tree pit. A trench drain will be constructed in the road, directly adjacent and parallel to new granite kerbs and covered with a grate. A pipe system will then deliver stormwater to the base of the tree’s rootball.This allows the tree to be planted flush with the level of the pavement. Less excavation is required for the tree pit which can help reduce potential conflict with existing underground services.

In addition to improving tree health and water management, this new design has an number of advantages over previous designs. These include the potential to deliver significant project cost savings through reduced:

  • installation and maintenance costs
  • reliance on traditional infrastructure required to manage stormwater runoff on roadways

Contact Officer: Barbara Meldrum

Email: [email protected]