TTW Civil Engineering Brochure

Civil Engineering

Civil with TTW

As award-winning, consulting engineers, our Civil team has been helping clients to shape the built environment throughout Australia and the Asia Pacific region for more than 60 years.

We give your team access to the benefits of scale through our integrated services, reducing the need to add expensive subconsultant and subcontract packages. Your goals are our primary focus, and our design approach is customised for every project based on type, scale, location, and complexity.

Our reputation is built upon high-quality projects and long-term relationships with local and state governments, architects, landscape architects, contractors and developers.

We provide Civil Engineering services from feasibility through planning, design and construction, and provide ongoing management and advice where requested for the operating life of a project.

We have experience in all aspects of civil development across all sectors, including design advice for civil master planning of precincts.

We provide you with pragmatic solutions that balance innovation, economic requirements and statutory compliance to solve almost any construction problem.

Our Expertise

Services

Our Civil Engineering team provides expertise across the following services:

„ Complex 3D BIM site grading to provide informed and accurate advice on DDA compliant access points, earthworks quantities and cut to rock

„ Coordinated BIM IFC models for stormwater networks and site typography for clash detection and import to REVIT

„ Arterial road and pavement designs for highways, main road underpasses, transport interchanges/ depots and major intersections

„ Pavement design and geometric layout, optimising design for cost savings

„ Master planning services that include civil design advice for: stormwater, roads, flood protection, pedestrian access and service corridors

„ Urban drainage design including the provision of detention and stormwater quality treatment systems, and sustainable rainwater reuse systems for private and public developments

„ Modelling of stormwater catchments using music, tuflow, rafts, drains, and/or hecras

„ Authority works including complex streetscapes with passive irrigation initiatives and civil design services to support infrastructure such as bridge structures, underpasses, stormwater outfalls and other facilities

Sectors

We deliver diverse and technical project solutions across all sectors and understand each one comes with its own complex challenges, budget, design and construction constraints.

Our understanding of sustainable and economical buildability has seen our Civil Engineers deliver numerous award-winning projects across key sectors, including:

„ Transport & infrastructure

„ Master planning

„ Government & public

„ Arts & culture

„ Health & research

„ Education

„ Sports & leisure

„ Industrial

„ Heritage sites

„ Retail

„ Commercial

„ Hotels & residential

„ Bespoke rooves

Our diverse range of experience and expertise offers our clients the confidence of delivering the best design outcomes and cost efficiencies for your projects.

Sustainability

We embrace the responsibility to deliver sustainable projects to the community and encourage a proactive approach towards sustainable design. This allows us to contribute to a holistic green vision for the construction industry.

Through our expertise and in-house Sustainability Engineers, our designs incorporate recycled and reused materials, rainwater reuse, stormwater quality treatment and structural forms that enhance the environmental performance of developments. TTW promotes research in sustainable initiatives that can be realised in practice. We continually investigate ways to lower our ecological footprint by reducing resource consumption and applying innovative recycling initiatives, so we are always working towards a more sustainable future.

As Civil Engineers, we are responsible for ensuring sustainability is embedded in our projects. We work closely with clients to provide solutions which respond to the natural environment, built form and are adaptable to mitigate risks from climate change.

Flood Management

We can integrate innovative solutions across the full spectrum of flood risk management for your next project.

Increased urbanisation, the effects of climate change, and extreme weather events mean flood risk management has become increasingly important for the construction industry and the environment. Effective modelling and mapping solutions are critical to our improved understanding of these risks and the implementation of integrated and natural flood management.

Our significant experience in the calculation and management of stormwater and flood risk across the globe has provided our clients with the best in Flood Management consultancy services. Working closely with architects, planners, project managers, and clients we deliver cost-effective solutions to complex problems across all our projects.

Our Flood services include:

„ High-Level Flood Risk Review – provided at the early stage/feasibility/master plan stage, generally used for low-risk sites

„ Simple Flood Risk Assessment (DA) – DA report based on flood levels and mapping received from Council

„ Standard Flood Impact and Risk Assessment (DA) – DA report where the proposed development is likely to have an impact on existing flood behavior and/or flood modelling is required to determine existing and postdevelopment flood behavior and flood hazard.

„ Detailed Flood Impact and Risk Assessment (SSDA) – State Significant Development that needs to comply with NSW Flood Risk Management guidelines 2022, and specifically guideline LU01.

„ Flood Emergency Response Plan – Report that details the responses and actions required prior to, during and after a flood event and key responsibilities during these stages.

Master Planning

Macquarie University Precinct, Sydney, NSW

Macquarie University Precinct redevelopment covers an area of 110ha with a value of $300M.

We work to provide learning precincts that are ongoing award-winning examples of infrastructure that embeds itself in the heart of communities and the fabric of student life.

Our goal is to bring to life your vision using ingenuity, applied learning, advanced technology and experience.

We have completed numerous aspects of the 110ha Macquarie University Precinct, including:

„ MU civil assessment for master plan

„ Gateway design

„ Crossing design

„ University Avenue diversion

„ MU Library

„ MU Hearing Hub civil works

„ MU Law Building

„ 2 University Avenue site assessments

„ University Creek flood study and geomorphic corrections to the creek system

„ Mars Creek flood study

„ Macquarie Central

„ Macquarie Shopping Centre flood risk assessment, loading dock ramps, and shopping centre extension stages

Macquarie University had access to the best advice and recommendations on strategies for investing in reliable systems and proven infrastructure for their $300M, 110ha precinct redevelopment.

An honest and personal approach when partnering with leading healthcare consultants has led us to design some of Australia’s largest hospitals and research centres.

Maitland Hospital, Metford, NSW

The $479m Maitland Hospital development was a state-funded, public health led project delivering much needed healthcare services to regional NSW in a modern facility.

The main structure is an elongated ‘H’ shape atop the clinical podium, with complex earthquake analysis carried out to reduce the impact of earthquake loading.

TTW delivered a substantial civil works package to ensure site access, roads, parking, and drainage from the site.

We undertook the design of all civil works, including all internal roads and car parks, along with the upgrade of an existing external intersection to a two-lane roundabout.

The works included the design of:

„ Internal roads, roundabouts and patient drop off

„ Loading docks

„ Separate ambulance access road and ambulance dock

„ Car park in excess of 600 marked spaces

„ Upgrade the existing intersection at Metford Road and Chelmsford Drive to a two-lane roundabout

Urban Development

Chatswood

Transport Interchange, Chatswood, NSW

The award-winning Chatswood Transport Interchange (CTI) is a mixed-use, transit-oriented development project underpinned by an urban design strategy that establishes new streets and reinstates connections once served by the previous station and railway line.

The largest project of its kind in New South Wales, CTI includes an upgraded rail station; an open landscaped bus interchange; 10,000sqm of podium retail space; and public pedestrian linkages reconnecting the centre of Chatswood. Above this sits three towers accommodating 550 apartments.

TTW developed and analysed complex staging to maintain the operation of two live rail tracks while constructing adjacent and also below for the new rail station. The 350m long station building was broken up into three zones defined by permanent movement joints.

A top-down construction methodology allowed the new tracks to become operational early prior to excavation under. Our involvement also included enabling works for the oversite development towers, ‘Chatswood Metro’, which were engineered for a separate developer.

Ensuring continuity of service during urban development is essential in delivering intelligent transport solutions that are smart, sustainable and reliable for generations to come.

Infrastructure

West Gate Tunnel Project, Major Temporary Road Diversions, Melbourne, VIC

TTW was engaged by CPBJH to provide detailed design of the Mackenzie Road realignment (including the Simms Road, Dahlenberg Road and Footscray Road interface) to facilitate construction of the Mackenzie Road on-ramp at the Northern Portal of the West Gate Tunnel project. The temporary road was subject to the rigour of a full VicRoads and IR review process.

The design involved complex geometry and vertical design to navigate through and over major crane slabs and construction compounds. Given the complex grades transition between proposed and existing levels, the carriageway was subject to a slope stability analysis and aquaplaning review.

To successfully implement the works, the design was delivered in numerous stages to allow free flowing traffic throughout the duration of the works.

Ensuring minimal disruptions during construction was key to delivering this road infrastructure upgrade, which was critical to economic growth and social development.

Government Spaces

Australian Embassy, Bangkok, Thailand

The award-winning, new Australian Embassy building in Bangkok provides a five-level Chancery, Head of Mission (HOM) residence and services building. The design is inspired by the Australian landscape and seeks to blend materials and architectural characteristics from both countries.

The site was prone to local flash flooding, so we developed an innovative site surface stormwater gravity drainage system to ensure the site will not be inundated when streets flood.

Time and costs were reduced by using piling designed with a refined settlement analysis to allow loads significantly higher than those generally used in Thai construction.

Driven by stringent physical security requirements, a distinctive feature of the project was the use of Air3D blast modelling, conducted in-house, which contributed to the design of blast-resistant façade, walls, doors and windows.

The Embassy also makes extensive use of Australian stone and timber. Particular features include: blast-rated, bespoke glazed, atrium walls and roof with slender masonry columns and clad shelfs; frameless glass bridge enclosure to level four of the Chancery; suspended stone ceiling to the HOM dining room; and a network of ponds for lilies, fish and turtles.

TTW understands that Government solutions need to be efficient and effective, while meeting goals for innovation and sustainable design.

Great Outdoors

Westleigh Park, Westleigh, NSW

TTW together with Environmental Partnership were engaged by Hornsby Shire Council to assist in the delivery of what will become a significant recreational and sports precinct for both the local and greater Sydney communities.

Covering 34ha of land, Westleigh Park, the Centennial Park of the north will house multi-use sporting fields adapted for various organised sports and provide multiple amenities, grandstands and maintenance sheds.

The scope of works also offers new access roads and car parking including a new link between Quarter Sessions Road and Sefton Road, and play facilities for active and passive recreation, including mountain bike, and walking trails.

Featuring many sustainability initiatives, there will be opportunities for water sensitive urban design and revegetation of the existing surrounding bushland. The park will be built on a post landfill site which will address a range of challenges, including its landfill history and context within an Endangered Ecological Community (EEC).

We utilise our knowledge and expertise to create vibrant sustainable community and cultural spaces that offer users opportunity for meaningful connection and increased participation.

Resorts

Multi-award-winning, Emirates Wolgan Valley is an ultra-luxury, conservation based resort in the World Heritage listed Blue Mountains region. Recognised as one of the finest hotels in the world, the resort is set over seven acres of conservation reserve. It consists of 40 freestanding villas established around resort facilities, comprising a homestead building, pool, sauna, gym and day spa.

Timber is the predominant material in the architectural, structural and interior design. This material was used to connect the building with the natural surrounds whilst absorbing the prized heritage that dates back to 1832.

The resort amplifies sustainable design through the use of recycled materials being sourced direct from the site, and its hydraulic independence, traditional vernacular elements, solar power and heat exchange technology.

Our advanced design methods and in-depth knowledge is paramount to overcome the challenges of operating in live and new urban and rural environments.

We rely on our long-term relationships with councils, local authorities and government bodies to build state-of-the-art, globally renowned and functional community and cultural spaces.

Focusing foremost on our client’s goals, our engineers seek out cost efficiencies, sustainable options and existing infrastructure, including reviewing the emotional impact of the space for future visitors.

Our Civil Engineering team overcame the remote site location to deliver site feasibility advice, civil master planning and detailed design for flood prevention, roads, bulk earthworks, stormwater treatment, pavements and traffic.

We worked collaboratively to deliver combined luxury and conservation in this environmentally sensitive resort.

Large-scale Industrial

LOGOS Metrolink Distribution Centre, Jakarta, Indonesia

LOGOS Metrolink Logistics Hub is strategically located in the eastern fringe of Jakarta with unparalleled access to the airports, shipping port and the CBD of Jakarta. This unique development of a large-scale, modern logistics warehouse facility will cater to a variety of size requirements.

The $100m development in East Jakarta involves over 200,000sqm of logistics floor and access ramps/driveways over three storeys. Our scope included Structural Engineering, with steel roof structures, stormwater and pavement design, stormwater retention, flood studies and traffic management controls.

The warehouse floors required post tensioned flat slab structures to achieve maximum clear height for the racking. Reinforced concrete special moment frames at the perimeter were introduced for earthquake-resistance.

The plan dimension of the post tensioned floors is approx. 250m x 180m, without building separation joints. TTW undertook a detailed study of the effects of creep and shrinkage in particular on long-term, pre-stressing losses. To control these effects, delayed pour breaks were introduced.

By working closely with our clients to understand their specific needs, TTW delivers complex and efficient designs for large-scale industrial facilities that meet functionality, durability, safety and compliance requirements.

Data Centres

NEXTDC S4, Horsely Park, NSW

The NEXTDC S4 project will comprise of a 300MW hyperscale facility with allowance for 1,000sqm to 4,000sqm data halls over three main buildings on an expansive 124,000sqm site.

The project is to be split into ten stages for the design and construction of the development. The staging design will be critical to the conceptual design in order to streamline the construction from Stage 1 and to ensure provisions are in place for when future stages are constructed and commissioned.

Staging will also assist with the delivery of the new expansion, while maintaining the security and operations of the existing Tier III data centre.

Strategically positioned, S4 is located close to the major electricity substation as well as telecommunications, utilities, and public infrastructure.

TTW provided civil site feasibility advice and civil master planning to NEXTDC for flood, bulk earthworks, stormwater, pavements and traffic. We have provided ongoing advice with respect to the site vendors earthworks preparation of the subdivision prior to our client accepting the site.

TTW’s complete understanding of the construction and operational methodologies allowed the structural and civil design to be completed on time while meeting the client’s objectives.

We ensure our client’s data centres are engineered for security and to grow in line with the latest technologies that drive them.

Placemaking

TTW has been instrumental in shaping one of the world’s most iconic precincts, ensuring its future as a must-see destination.

The Rocks and Circular Quay Precincts, Sydney, NSW

We have helped develop several stages of the Overseas Passenger Terminal, the restoration of Campbell’s Stores and the redevelopment of Campbell’s Promenade.

We have also been involved in stages of the Park Hyatt development and reviews of work methodologies for the Opera House Forecourt as well as the Opera Residences.

Stockland Green Hills, East Maitland, NSW

The major expansion of the existing retail centre in East Maitland included a new two-level, 38,000sqm retail centre. The expansion comprises 1,600 new parking spaces and features new department stores, food court and town square.

Surrounding road networks were upgraded, improving pedestrian and vehicle access, and including two intersections on the New England Highway and traffic light intersections into the shopping centre.

The redevelopment required a carefully coordinated approach across multiple stages during a 27-month period to ensure minimal disruption to retail trade operating in Stockland Green Hills.

Our experience in all facets of retail revitalisation, from traffic reporting and strategic framework development to complex construction staging requirements, resulted in minimal congestion in and around the centre.

Earthworks & Retaining Walls

Mentone Life Saving Club and Naples Road Outfall Drain, Mentone, VIC

The Mentone Life Saving Club redevelopment includes the redesign of the beach access ramp, beach promenade and car park.

The retaining walls adjacent to the life saving club will use timber crib wall technology to capture level changes through to the beach promenade. TTW is working closely with the architects and crib wall suppliers to design a bespoke solution that will complement the aesthetic of the building and surrounding vegetation.

The existing outfall drain adjacent to the life saving club, which discharges across the beach into the Port Phillip Bay, is to be upgraded. The outfall drain services the district’s largest catchment, and requires an upgrade to suit the increased runoff from the urban catchment.

The outfall drain will be retrofitted with one of Victoria’s largest vortex style gross pollutant traps, which will effectively separate and capture gross pollutants, sediments, silt, total suspended solids, some nutrients, oil and grease. This will significantly improve the quality of the water discharge around the bay.

At the beachfront, the new drain will connect to an exposed box culvert that will act as the outfall and viewing platform for beachgoers. The culvert is a bespoke design between our Civil and Structural teams that is suited to the coastal conditions and storm/tide events, whilst allowing for the historic sand scour levels to reduce the groyne effect.

The ramps and stairs have been designed to allow for seasonal sand movement whilst maintaining beach access.

Our team can deliver bespoke solutions that meet technical requirement without compromising on aesthetics, even in the most sensitive environments.

International Roofs

We have carried out roof drainage hydraulic assessment and designs for our long-term partner, Chadwicks. This includes many international transport and exhibition facilities around the globe.

Our roof analysis has helped finalise designs for major developments such as Hong Kong Exhibition Centre, Incheon Airport in Seoul, Bangkok Airport extension, Abu Dhabi Airport, Dubai Stage 2 Airport and the new Hong Kong T2 Airport extension.

We support the growing demand for international travel through sustainable designs and advanced technology.