Veloway 1 – Visual Impacts to Community

While infrastructure projects provide valuable improvements to our cities, adequate consideration of their visual impact is critical so that they are not only functional, but also contribute to the visual quality of the landscape, or at the very least, not degrade it.

Landscape Assessment provides a comprehensive summary of the landscape context and values and the manner in which they should be managed.  A comprehensive assessment ensures that landscape considerations are not overlooked.

Veloway 1 – Pacific Motorway

Department of Transport and Main Roads 2020, Veloway 1, Pacific Motorway, viewed 27 May 2020.
https://www.tmr.qld.gov.au/Projects/Name/V/Veloway-1-Pacific-Motorway

One example is Brisbane’s Veloway 1 project. A quick online search and phone query could not confirm whether a visual assessment was completed as part of the planning for this project.

This is often a requirement for significant and complex transport and road projects. Whether Veloway 1 is classed as a major project or not, a landscape assessment would be beneficial, particularly considering the close proximity of Veloway 1 to existing dwellings.

AILA Guidance Note – Landscape and Visual Assessment

AILA released a guidance note for Landscape and Visual Assessment which provides the key principles to be applied in any visual assessment.

It references a number of other established guides and outlines five key steps for visual assessment.

Applying this to the Veloway 1 site area, some observations are noted below.

AILA Guidance Note – Landscape and Visual Assessment

Australian Institute of Landscape Architects 2020, Guidance Note for Landscape and Visual Assessment, viewed 27 May 2020.
https://www.aila.org.au/

It references a number of other established guides and outlines five key steps for visual assessment. Applying this to the Veloway 1 site area, some observations are noted below.

The Project

The Veloway 1 consists of removal of several stands of established trees, construction of new bridges at three locations and a new raised concrete structure, that is the bikeway, to the Bapaume Street verge alongside the M1 Motorway.

Existing Conditions

By no means or interpretation were the existing site conditions extraordinary, or hold significant visual or cultural value. 

The presence of trees to the western side of the M1 Motorway was a noticeable feature that provided intermittent relief from the adjoining M1 Motorway.

Veloway 1 – Pacific Motorway

Department of Transport and Main Roads 2020, Veloway 1, Pacific Motorway, viewed 27 May 2020.
https://www.tmr.qld.gov.au/Projects/Name/V/Veloway-1-Pacific-Motorway

There are some significant stands of vegetation along the Veloway 1 corridor. There also doesn’t appear to be any features of cultural heritage significance located in the area.

The stands of vegetation are not likely to have held any significant ecological value, but they did contribute to the amenity of the corridor along Bapaume Road. They were effective in providing relief to the continuous Motorway barrier and retaining structure.

In addition to this, they created a visual backdrop when traveling along the motorway. They also provided a visual and acoustic separation between the Motorway and adjoining suburbia.

Veloway 1 – Pacific Motorway

Department of Transport and Main Roads 2020, Veloway 1, Pacific Motorway, viewed 27 May 2020.
https://www.tmr.qld.gov.au/Projects/Name/V/Veloway-1-Pacific-Motorway

Was the existing vegetation investigated as part of an ecological study or Arborists assessment?

Identify Effects

The impact of the project varies along the route. The scale and bulk of the new structure is disproportionate to existing motorway infrastructure. The sections of the Veloway 1 bridges are bulkier than the adjacent motorway itself.

A number of dwellings are in close proximity to the Veloway 1 route. This proximity, the removal of vegetation and new built form constitute a significant change to views from these properties.

Other locations could be argued to be minimally impacted. For instance, the new overpass over Marshall Road is positioned on the same alignment and height of the existing motorway overpass, imposing minimal change to views in this location, so it could be argued that this change is relatively minor.

In the vicinity of the Holland Park busway station, the new works consist of pavement on grade, without the need for any bridge, resulting in minimal impact.

Opportunities to Modify and Mitigate

While not affecting the majority of road users, a handful of specific locations along the route will experience a high degree of change primarily viewed by local traffic on the approach from side streets and from adjacent residences

TMR’s Tree Removal Strategy includes the intent to re-vegetate the remaining cleared areas with trees, shrubs and ground covers. At the time of writing, no detailed landscape treatment proposals could be obtained.

Possible mitigation measures could have included:

– New street tree planting along Bapaume street

– Buffer planting of trees, shrubs and groundcovers to embankments and front of built form where space permits.

– Additional planting within green spaces to the opposite side of Bapaume Street could provide additional screening to dwellings.

– Final finishes of the built form may also bear some influence on the overall impact of the structure.

Effects and Residual Impacts

The constructed Veloway 1 will impact the visual character the road corridor of Bapaume Road – dramatically in some locations and minimally in others.

New planting of trees and understorey to the road reserve will in time contribute to softening the impact of the new structure from the road corridor and nearby dwellings.

Some dwellings will continue to experience a high impact due to the orientation of the dwelling in relation to the built form (i.e. dwellings that face new bridges where there is no space to establish screen vegetation.

Adequate consideration of the above steps is important to forming a Landscape Integration Strategy that has the potential to guide a project to an outcome that considers the visual experience.

No doubt the decision-makers involved in public projects have numerous issues to consider in order to meet the project time-frame and budget.

The logistics involved in the different design options no doubt impacted the design, time-frame and budget.

Many of the foreseeable design constraints are likely the result of other issues being prioritized. As a result, some amenity considerations do not always receive due attention.

This begs the question – what is the best way to determine a tangible value on landscape amenity so that it can have an impact on decision making?

The completion of the Veloway 1 and establishment of vegetation should prove to provide an interesting case study in gathering information on the delivery of transport infrastructure.

4 Common Intrusions to Deep Planting Zones

A deep planting zone is an area that is dedicated to landscape and is able to sustain large subtropical shade trees.

The aim is to retain or provide significant vegetation to urban areas for shade, amenity, offset of carbon emissions and to mitigate the heat-island effect in urban areas caused by dense built-form and hard surfaces that fill cities.

Brisbane City Council has some of the most specific requirements that include:

  • Area is 100% open to the sky
  • No driveways, maneuvering or hardstand areas and pedestrian paths
  • No underground development (basements, tanks) or infrastructure (services)
  • In natural ground (not in cut/fill area or a planter)
  • Can incorporate existing trees
  • Sometimes must meet a minimum dimension

Clearly, not all of the landscape area typically indicated on a site plan meets these requirements.

Multi-storey apartment buildings often include garden areas at entry areas that are located beneath upper levels. Multiple services and structural footings are often located beneath landscape zones.

4 Common Intrusions to Deep Planting Zones

Services

(transformers, fire boosters, water meters, switchboards)

A common and significant (size) intrusion to a deep planting zone is the introduction of a pad-mount transformer. Ironically, the requirements for locating transformers are quite similar to deep planting zones so of course this is exactly where they end up.

Understandably, the requirement for these is often not certain until after a DA is achieved. Because of this, it is now common for Brisbane City Council to require transformers to be indicated on site plans for development approval.

Stormwater infrastructure

(overland flow zones, stormwater pipes, bio-basins)

Overland flow zones are often accompanied by restrictions to the density and type of vegetation that can be planted within it.

Sometimes it means no planting at all. Where a stormwater pipe is shallow, any large tree planting will pose a risk to the integrity of the pipe. Many tight development sites make use of underground stormwater treatment devices.

But when the need to an open bio-retention area is identified late in the design process, often the only location left on the site to put these are landscape areas.

At times a bio-retention area may be designed to accommodate trees, but this falls short again, as the very design of a bio-zone involves replacing the filter media at a future time, thereby removing any vegetation.

Footings

Footings to walls and structures can significantly impact landscape areas in terms of the amount of growing media that is available to plants. Boundary walls that require footings to be contained within the site can result in significant footing extents that commonly impact landscape areas.

For instance, a typical landscape buffer zone might be 2 metres wide, which normally allows small columnar trees and screen shrubs to be planted.

If such a buffer happens to be located adjacent to a wall that has a footing intruding 800mm into the landscape area, it could mean that no trees can be planted in that zone unless footings are greatly lowered, adding significant cost to the whole exercise.

Access

(footpaths, hardstand, parking spaces, driveways)

Fire exits and access paths to service areas are items that are at times resolved quite late in a project. Where landscape areas are minimal, these can have a big visual impact on the resulting amount of planting area, as well as affecting what areas can be counted as deep planting.

The challenge here is that many of these components remain in a conceptual form throughout the DA phase. Often their resolution occurs after key structural components of buildings and structure and it is then simply too late.

While each may be small individually, their combined impact on the amount of deep planting can be significant to the point where landscape conditions cannot be fulfilled.

The key is to factor in realistic area estimates required for all components and services at the early stages. Getting a Landscape Architect involved early in the site planning phase allows an opportunity for feedback that can lead to a more robust proposal that will withstand inevitable change.

What does the Client need to know?

An area designated as deep planting should be treated as a planted garden bed area that includes trees. Turf is not considered an acceptable solution.

It is important that a client/developer understands this as there are reasonable design and cost implications.

Roof Gardens, Roof Terraces and Gardens in the Sky

Roof Gardens, Roof Terraces and Gardens in the Sky

It is amazing to see some of the ideas of Roof Gardens and Roof Terraces within high rise buildings popping up everywhere. Architect’s are racing to see if they can have a crack at Landscape Architecture as well as Architecture.

Successful projects seem to have got the hang of establishing greenery into the vertical concrete jungles created by Architects.

However, is it really all it is cracked up to be?

Picture this – a lot of skyscrapers with 50% or more vegetation amongst the footprint of the buildings.

Imagine the fire inferno that could potentially be created by combining dry weather, limited or poor maintenance and close combination of highrise structures in a densely populated area.

Wow – that could potentially be a huge risk.

Vertical Landscapes

Really, why are we trying to shove landscape into a place where it doesn’t really want to go?

After all, a landscape in a podium environment is only going to have a limited life span before it needs to be replaced.

5 years? 8 years at the maximum before it starts looking tired and the nutrients of the building contractors cheapest podium mix have been sucked out of each planter box?

Lots of planning documents are now appearing with the obligatory landscape tacked onto the side of a building or draped over the facade to make the artists impression more ‘impressive’.

However the reality is, creating these types of landscape spaces above ground for the long term is not a cheap exercise. Let alone a maintenance nightmare for body corporate down the track.

Additional weights for the building structure, additional watering systems and waterproofing issues.

More maintenance, limited life spans and numerous other challenges ensure these ideas are ‘booted’ as soon as the builder gets hold of the contract.

More Open Space?

Is a better approach to plan ground plane areas for more open space?

Open vegetated corridors in and amongst cities and urban areas is always at a premium. Not paved open parks, but significantly vegetated environments with large trees.

Not manicured lawns and water features but naturally occurring native bushland or forest space. Good for bush walking, mountain bike riding or general appreciation of the outdoor environment.

What about bigger communal deep in-ground recreational areas around the base of buildings that spread across sites?

Encouragement of residents to be a true part of the local community. Facilities that are hard to resist. Limited pavements and hard surfaces. Large urban vegetable gardens. Heavily vegetated in-ground spaces around entry points of buildings that adjoin neighboring sites, green spines, and parklands.

It is almost like the policy of squeezing water filtration devices into every development. Jammed onto the site boundary so the landscape buffer is then limited due to the Hydraulic Engineer’s horror of adding trees to their underground pipework.

A better approach is to treat the water downstream in a larger filtration basin – therefore eliminating the need for conflicts of interest on small lot developments.

Is trying to add significant landscapes to podiums the same scenario?

Productive Gardens for Urban Environments

Productive Gardens for Urban Environments

Both the South East Queensland regional plan and Brisbane City Plan target increased high density development. Inner city and activity centres are aiming for a more compact urban footprint as a long-term sustainability measure. 

It is important to consider measures to make these developments liveable, functional and sustainable. Gardens of all kinds have been shown to have a positive effect on human well-being. In addition to this also achieving positive environmental effects. 

One viable and practical measure is to incorporate productive vegetation for the benefit of occupants/users.

Vege Gardens in the City?

While the idea of a vegetable and/or herb garden may not be for some the ideal landscape solution for a high-use area, it is important to consider the potential social benefits.

Communal gardens can provide a means of bringing people living in close proximity together to share and build relationships.

Many herbs, fruits & vegetables require good sunlight, so a rooftop location is an ideal situation for maximizing productivity.

As with any other climbers, fruit and vegetable vines can be trained to maximize the use of small spaces.

Design Considerations

A significant design consideration is that edible and productive plants must be easily accessible as they will generally require more maintenance, as well as the obvious need to access the produce.

This is why it makes sense to position vegetable gardens near high pedestrian traffic areas. It is more likely that it will be maintained in a place that people walk past every day rather than a hidden corner.

In a highly built up urban environment, extremes in heat, cold, shade & sun are likely to occur, and only the right plants will thrive.

Design considerations are:

  • Make the gardens easily accessible;
  • Position vegetable gardens near high pedestrian traffic areas;
  • Consider extremes in heat, cold, shade & sun;
  • Provide maintenance guidelines for users.

In any case, only a small percentage of residents may actively take ownership of gardens to maintain and reap the benefits, which will normally be the people who know what they are doing.

The long-term management of productive gardens in any communal setup therefore requires flexible approach, as well as a backup plan if community participation does not happen automatically.

Other Benefits

It worth considering the benefits that may come with a development that is recognised as an environmentally and socially conscious development. Productive vegetating of buildings can contribute to EnviroDevelopment recognition.

BHCL Creating Livable Communities and Citicene recently endeavored to include herbs and vegetables amongst the new planting of a few high-density housing developments.

Different herbs and vegetables were planted in communal areas and individual balcony gardens to encourage sharing between residents. At another development, a number of new residents have planted herbs and vegetables of their own initiative.

The successful incorporation of productive gardens into our urban environments could allow more of us to enjoy local produce while contributing to the sustainability of our cities.

Brisbane Landscape Architects

Landscape Architecture in Brisbane

The term landscape architect was established after Frederick Law Olmsted, Jr. and Beatrix Jones (later Farrand) with others founded the American Society of Landscape Architects (ASLA) in 1899.

During the latter 19th century, the term landscape architect began to be used by professional landscapes designers, and was firmly established after Frederick Law Olmsted, Jr. and Beatrix Jones (later Farrand) with others founded the American Society of Landscape Architects (ASLA) in 1899.

Source: https://en.wikipedia.org/wiki/Landscape_architecture

While the profession had it’s roots in America in the late 19th century, it wasn’t until 1966 did Brisbane landscape architects join with others across Australia to form the Australian Institute of Landscape Architects.


Brisbane History of Landscape Architecture

There is not a lot of published evidence of a history of Queensland gardens or landscape architecture in Brisbane.

However, from when the Australian Institute of Landscape Architects was formed in 1966, Brisbane has seen a steady growth in the profession with significant contribution through a number of large, medium and small scale projects.

Brisbane Storey Bridge

“The Institute had its beginnings at a meeting held during a national conference of the Royal Australian Planning Institute in August 1963 whereby a group of professionals held an informal meeting to discuss the need for a new professional body to represent Australia’s Landscape Architects.”

Source: https://www.aila.org.au/about?

A number of the original subscribers were practicing landscape architects in Brisbane. Today there are many landscape architects in Brisbane providing a variety of landscape architectural services.


Citicene are landscape architects located in Brisbane, Queensland, Australia. We are qualified and registered landscape architects and members of the Australian Institute of Landscape Architects

We have delivered many projects throughout the Brisbane Shire. Our team have an excellent understanding of Brisbane City Council’s requirements for landscape.


Landscape Designer or Landscape Architect?

Landscape Architects and Landscape Designers can both produce excellent quality landscapes. The difference is in the type of training and sometimes the scale of project delivered.

For example, Landscape Architects undertake University training and typically work on larger masterplanned type projects, infrastructure or commercial works.

Brisbane River

Landscape designers have usually completed a Diploma of Landscape Design can also produce excellent quality work. They often focus on residential scale projects. Either way, if you are looking to engage a professional, ensure you choose your landscape architect or landscape designer based on the type and scale of project you are wanting to deliver.

If you are looking for a landscape designer in Brisbane then this is likely to be different to engaging a landscape architect.


Logo Brisbane City Council

Brisbane City Council Landscape Code

Brisbane City Council have specific landscape requirements for any development in their Shire. The Brisbane City Plan has specific applicable landscape codes depending on the land use.

Landscape work code purpose

The purpose of the Landscape work code is to assess the suitability of the landscape work aspect of development.

Source: http://eplan.brisbane.qld.gov.au/CP/LandscapeWorkCode

Performance outcomes and acceptable outcomes

Depending on your project type, there are numerous requirements regarding landscape that must be met to achieve Development Approval. 

These are known as ‘Performance outcomes and acceptable outcomes’. From the protection of trees through to the connection of drainage for podium planters, landscape requirements are detailed.

The intention is to ensure quality landscapes across the Brisbane region. Landscapes need to meet specific standards of design and construction.


Citicene Experience in the Brisbane Region

Our personnel have delivered many commercial projects in the Brisbane City Council Shire. Our experience includes a large range of project types. From multi-story high rise through to industrial sheds and master-planned communities.

We offer professional advice from landscape concept plans through to on-site contract administration. This includes supervision of landscape contractors and quality control. We also work with a network of consultants and landscape contractors to deliver to your requirements. 

Image of Brisbane City Council Bus and Street Trees
Brisbane City Landscapes

Landscape Architectural Services

Our services and deliverables include; 

Preliminary Design Services

  • Landscape Masterplans & Masterplanning
  • Concept Plans and Schematic Design
  • Character Analysis and Investigation
  • 3D Modelling & Rendering
  • Urban Design & Urban Design Guidelines
  • Comprehensive Planning
  • Landscape Construction Cost Analysis

Specialist Services

  • Visual Impact Assessments
  • Authority Approvals

Detailed Planning Services

  • Landscape Documentation and Specifications
  • Vegetation Management Plans
  • Natural Assets Local Law Applications (NALL)
  • Arborist Assessment
  • Fauna Management Plans

Tender and Construction Services

  • Tender and Construction Drawings and Bill of Quantities Deliverables
  • Contract Administration
  • Site Supervision and Inspections

Value Management

  • Certification
  • Conflict Resolution

Regardless of your type and scale of project, Citicene can tailor our services to your requirements. Contact us to learn more about what we can provide for your next project.


Brisbane Project Experience

Apartments, shopping centres, corporate landscapes, bio-filtration basins and residential communities are just some of the projects we have delivered in Brisbane. A small snap shot of some of these projects include:

Centenary Square Landscape Brisbane
Centenary Square | Fortitude Valley | Brisbane
Soho Apartments Landscape Brisbane
Soho Apartments | Brisbane
Mount Ommaney Centre Landscape Brisbane
Mount Ommaney Centre | Mount Ommaney | Brisbane
Cargo Apartments Landscape Brisbane
Cargo Apartments | Brisbane

Landscape Architecture Firms in Brisbane

There are many landscape architects to choose from in Brisbane. Depending on if you require a large firm or a small sole practitioner, there are plenty of quality landscape architects to choose from.

Some of the large firms include Lat 27, Place Design Group, Form, TRACT, CUSP and Vee Design. Others include Dunn and Moran, Saunders Havill Group, Wolter Consulting and JFP Urban Consultants. Finally, there is Fred St, Jeremy Ferrier, Arcadia, and Citicene.


The Detail of Landscape

Landscapes consist of many elements. From plants to view corridors, there are many things to consider in any landscape.

Plant Species in the Brisbane Region

The geography of Brisbane is characterised by its coastal location in the south eastern corner of the Queensland state of Australia.

The greater Brisbane area of Queensland Australia, has many species of indigenous flora.

Brisbane City Council requires the use of native plants throughout the region. This is to enhance the natural environment, reduce the use of weeds and protect our natural landscapes.

As landscape architects we are seeing more and more exotic species replicated across developments throughout the region. Even professionals are repeating their plant palettes for many projects and this is causing concern for native species in the Shire.

‘Most (66%) environmental weeds have been introduced as garden ornamentals.’

Source: https://weeds.brisbane.qld.gov.au/

Therefore, species that were once popular have become weeds for many different reasons and should be avoided. The Brisbane City Council provides advice on what are declared weeds. This weed identification tool can be accessed here.

Brisbane City Council Weed Identification Tool

It is important that species are carefully considered for all projects to add to the city’s urban forest and support the unique wildlife in the region.

Supply from commercial nurseries can also be an issue. Typically commercial nurseries will grow only what is popular and only what sells. There are native nurseries around and it is important for landscape architects to look deeper into using more suitable species. Species that are indigenous to the specific area their project is in.

Also encouraging local nurseries to grow suitable alternatives will assist in ensuring we are protecting the natural habitats of the region.

Best plants for Brisbane’s sub-tropical climate

There are plenty of plants to choose from that are hardy and will live a long life. Often species come onto the market as hybrids, however they often don’t last long and die out after one season. If you like replacing your plants on a regular basis – then this is ok. However if you want a garden that lasts then using the proven performers is what you should be aiming for.

Proven Performers for Brisbane

Shrubs such as Coastal Rosemary Westringia fruticosa and Syzygium ‘Aussie Boomer’ are proven performers that do well in this climate and if treated well will last for years with little maintenance.

Medium evergreen trees such as Tuckeroo Cupaniopsis anacardioides and Golden Penda Xanthostemon chrysanthus are also proven performers and used regularly across Brisbane.

Larger trees such as Flame Tree Brachychiton acerifolius and Weeping Lillypilly Waterhousea floribunda also perform extremely well in the Brisbane region.


Commercial Landscape Architecture vs Residential Landscape Architecture

A lot of the larger landscape architectural firms focus on commercial and government projects as well as urban planning and design, visual assessment or major infrastructure projects. It may be difficult to get them to interested in a project of a residential scale unless the project is totally unique.

Residential Landscape Architecture

Often the fees for a landscape architect can be a substantial amount which for the everyday urban home would likely be better spent on the actual construction.

Pavement and Finishes Landscape Works

Obviously landscape is not just about the plants. Pavements, finishes, outdoor furniture, outdoor lighting, irrigation, play equipment, rocks and pebble, edging, seats, fencing, retaining walls, entry features signage, way finding signage, stairs, handrails, grates, artwork and service pit covers are just a range of items that can be included in any landscape.

Aerial photo of Lite n Easy Factory
Commercial Landscape Architecture

Depending on the project scope, location and client, all of these things contribute to a landscapes. Landscape construction costs can range from a few thousand dollars to millions of dollars in significant city parks.


Landscape from a Visual Perspective

Landscape visual assessment involves investigating the visual impacts of development on the landscape. Broadly, natural environments have a high visual amenity and built form a low visual amenity.

This area of landscape architecture is detailed and extensive and an important part of city planning which is not recognized enough.

Significant projects or projects where existing amenity has a high value should always include a visual analysis and impact assessment study.


Frequently Asked Questions

When did Landscape Architecture start?

The first person to write of making a landscape was Joseph Addison in 1712. The American Society of Landscape Architects (ASLA) was founded in 1899.

When was the Australian Institute of Landscape Architects formed?

August 1963 at a meeting held during a national conference of the Royal Australian Planning Institute.

What are some famous gardens in Brisbane, Queensland?

The City Botanic Gardens, Brisbane Botanic Gardens, Roma Street Parkland and the soon to be built Victoria Park Gardens.

How many landscape architecture firms are there in Brisbane?

There are approximately 30 landscape architecture firms in Brisbane and over 100 practicing landscape architects.

Creating Retail Landscape Experiences

Creating Retail Landscape Experiences

Shopping Centres, Marketplaces, Plazas and Malls – typically, these types of retail centres require a high level of detail and finish and this is why we enjoy designing in this industry sector.

The landscape is an important component of the entertainment and outdoor eating/foodcourt portion of any retail centre and normally requires a high level of detailed design closely coordinated with Architecture and Interior Design consultants. 

Construction budgets can be significant and providing entertainment in outdoor spaces lined with shops, cafe’s, restaurants and retail outlets creates a strong atmosphere and character for shoppers to enjoy.

The landscape often includes:

  • intricate pavements and tiling;
  • feature walls and retaining walls;
  • internal planting areas and interiors-capes;
  • planter boxes;
  • public art;
  • vertical climbers and green walls;
  • shade trees and structures;
  • significant water features;
  • striking plant selections;- play spaces.

Stand-alone Retail Outlets

Stand-alone Retail outlets often require a level of landscape that meets the local authority requirements while also accommodating restricted budgets.

Citicene has experience in delivering a large range of these types of projects while meeting these two important requirements.

Citicene has a broad range of experience in delivering the landscape component of retail projects. We have been involved in numerous shopping centres, retail outlets, malls, marketplaces and stand alone retail and commercial projects throughout Queensland, New South Wales and South Australia.

We have experience in delivering both ‘hard’ landscapes and ‘soft’ landscapes paying a high degree of attention to detail.

Some of the exciting retail projects we have been involved in include:

Important landscape design considerations of retail projects often can include;

  • Maintenance Costs
  • CPTED (Crime prevention through environmental design) Principles
  • Pedestrian routes and access linkages
  • Vehicle and pedestrian conflicts
  • Safety
  • Local Authority negotiation and approvals
  • Value for money
  • Water Sensitive Urban Design.

Green Walls and Vertical Gardens

Green Walls and Vertical Gardens

Buildings that Breath, Green Walls, Vertical Gardens or Podium Landscapes Whatever you want to call them, these types of landscape elements are an important aspect of modern Architecture and Landscape Architecture.

They are making a significant difference to the living and working spaces where we spend so much time. 

These elements have some notable benefits when incorporated into the urban fabric. There are important considerations that must be addressed both during construction and for the lifetime of the building including additional maintenance requirements.

Gardens in the Sky

Essentially, planning for ‘green space’ for each individual apartment throughout each level of a building takes a reasonable amount of planning.

However, through clever design, incorporating the interior and exterior space provides huge opportunities to maximize living spaces. Utilizing every part of the minimum floor allowed within the building footprint constraints is desirable.

In addition to this, ‘aspect’ plays a critical part of planning these areas as each side of the building receives different climatic conditions.

Careful consideration of light and numerous other conditions is required to ensure the success and longevity of any particular species.

Green Walls

Green walls are simple solutions to provide vertical green elements without taking up significant space. There are now countless products available and methods to installing a green wall.

Two main types of green walls that are becoming more and more popular are;

  • those that are really facades of vegetation growing up a wall, trellis or wires
  • those where plants are directly planted into a vertical structure that includes a growing media.

All forms of green walls require on-going long term maintenance. The amount of maintenance expected can be less than you think.

Green Facades

The most cost effective method to achieve a ‘vertical green effect’ is to train a suitable climber to an existing wall or fence.

Image of Creeping Fig (FICUS pumila) growing on concrete structure
Creeping Fig (FICUS pumila)
growing on concrete structure

An effective example is the ‘Creeping Fig’ (FICUS pumila) pictured growing directly on a concrete wall.

It will work just as effectively on timber, brick or stone, and will provide almost 100% cover in a suitable position.

However, most climbers will require some kind of trellis system and training to suitably cover a wall. Particularly many of the flowering species.

Another example of flowering species trained to a wire cable system. A fairly dense cover has been achieved with this species rather quickly due to the sunny position.

Cardinal Climber (Ipomoea species)
growing on stainless steel wires

Using several climbing species can provide more colour and texture variation, but could look messy if not controlled.

Image of star jasmine trachelospermum jasminoides green wall
Star jasmine (Trachelospermum jasminoides)
Green Trellis Wall

One advantage of a utilising a trellis is that it is not restricted to a flat plane. Trellises can be designed to include varying shapes and angles, and can be designed to include something 3-dimensional as demonstrated below.

The many design possibilities can provide significant impact, particularly when dealing with a large monotonous building facade.

The challenge with climbers is to provide for their longevity, which is essential to the success of the green wall. Climbers will require access to deep soil at ground level or planters of a suitable size.

These factors need to be considered early in the design process to ensure required loads are factored into the engineering of structures.

Maintenance requirements depend on the desired effect, but providing access to all areas is a good idea so that maintenance can be carried out if and when required.

Living Walls

The main advantage of this option is that is can be installed nearly anywhere, particularly when a space is not purpose built, and the weight of significant podium planters is not an option structurally.

Installation of a living wall of any significant size will require a survey of the structural features of a building or wall to ensure safety. Permits may also be required in some situations.

A substantial green wall made up of a variety of plants can provide the instant effect of a lush vegetated wall.

There are a number of suppliers around that specialize in installing these types of green walls. This example in King George Square provides a rich variety of colour, texture and form to what otherwise could be a very dull space.

Something like this may cost up to $2500/m2 to install, depending on the overall size and complexity of the project.

Image of King George Square Green Wall
King George Square | Brisbane | Green Wall

Hydroponic systems contain no soil so rely on the nutrients being added to irrigation water. Some sources report that these systems may be environmentally damaging as these nutrients may be released with waste water and end up in the sewer system.

The fact that these systems are made up of a few layers of felt means they can only support small plants. If plants get too big, these areas of the wall will need to be replaced otherwise large plants can rip the matting apart. Because of this, a hydroponic setup is more suitable for smaller areas.

This type of system is ideal for using epiphytic plants. Epiphytes derive nutrients and water from the air and water, and are therefore an ideal option for a wall. The use of epiphytes as green walls is one way easy way to achieve a striking result, as long as site conditions are suitable for the plant selection.

Other systems are effectively a large flat bag of planting medium in a supporting cage structure. This is managed much easier with small vertical gardens. A large area is normally broken up into multiple panels for ease of maintenance.

Module systems are made up of plastic interconnecting modules containing planting mix. These also require the mix to be replaced on a regular basis depending on position. The benefit is that modules can be replaced individually as required, the volume of growing media allows for more significant planting. These systems are generally the most expensive to install.

The cost associated with any type of vertical garden depends on many factors such as location, plant species, height, framing, lighting and irrigation requirements.

A professional installer will need to know specific details about the project to provide an accurate quote.

Finally . . .

All forms of green walls require on-going long term maintenance. Not only the installation cost, but accessibility, practicality and the desired outcome should be considered thoroughly.

Does the space warrant the expense of an instantly stunning feature or will ‘greening up’ the area be adequate?

Is ease of maintenance a priority or are you happy to pay for specialist maintenance personnel where required?

* Images by Citicene. Designs by others.

Landscape Architecture for Renewable Energy Facilities

Landscape Architecture for Renewable Energy Facilities

The Queensland Government is committed to increasing the amount of renewable energy supply across the State.

Renewable Energy Target

The target is a 50% (per cent) Renewable Energy Target (RET) for Queensland by 2030.

To determine if this target is credible, the Queensland Government established the Renewable Energy Expert Panel in early 2016 and a draft report was released in October 2016.

Already there has been an uptake in the number of Development Applications for renewable energy facilities such as PV Solar Farms particularly in the West of the State.

These types of facilities are significant in size and spread and as a result many issues are raised within the Planning Approval process to address Community concerns.

Due to the nature of these types of developments, understandably communities are concerned about the impacts on their surrounding environments and therefore Local Authorities are requiring detailed, specialist advice.

The Role of Landscape

Landscape Architecture plays an important role in the approval of these types of renewable energy facilities and can greatly assist owners achieve development approval while helping to put communities minds at ease.

Inherently, the landscape is a major factor in such broad, areas of land that these types of projects cover and many aspects within the landscape need to be considered carefully. Visual Impact is an important consideration and Visual Assessment should be completed to determine the likelihood of impacts on view-sheds and possible mitigation strategies to address these impacts.

Any Landscape Character is often considered unique by any one community and analysis of the landscape character is an important consideration throughout the assessment process.


Other Considerations

Other important considerations are reflectivity, stormwater and overland flow impacts, changes to surrounding infrastructure and levels of activity during operation.

As the Queensland Government is committed to increasing the uptake of renewable energy to drive jobs, investment and emissions reduction, there is an underlying importance to deliver these facilities to a high standard to protect our communities and importantly our landscapes as these types of facilities will be around for a very long time.

Citicene have been involved in delivering development approval for PV Solar Farms including delivering landscape architectural advice and visual impact assessments. Contact us to learn how we can assist with your renewable energy project.