Collins Arch

Melbourne
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    Metrics
Height 148.4 m / 487 ft
Floors 42
Official Name
The current legal building name.

Collins Arch

Other Names
Other names the building has commonly been known as, including former names, common informal names, local names, etc.

Pantscraper, 433-455 Collins Street, 447 Collins Street

Type
CTBUH collects data on two major types of tall structures: 'Buildings' and 'Telecommunications / Observation Towers.' A 'Building' is a structure where at least 50% of the height is occupied by usable floor area. A 'Telecommunications / Observation Tower' is a structure where less than 50% of the structure's height is occupied by usable floor area. Only 'Buildings' are eligible for the CTBUH 'Tallest Buildings' lists.

Building

Status
Completed
Architecturally Topped Out
Structurally Topped Out
Under Construction
Proposed
On Hold
Never Completed
Vision
Competition Entry
Canceled
Proposed Renovation
Under Renovation
Renovated
Under Demolition
Demolished

Completed

Completion

2020

Country
The CTBUH follows the United Nations's definition of Country, and thus uses the lists and codes established by that organization.

Australia

City
The CTBUH follows the United Nations's definition of City, and thus uses the lists and codes established by that organization.

Melbourne

Function
A single-function tall building is defined as one where 85% or more of its usable floor area is dedicated to a single usage. Thus a building with 90% office floor area would be said to be an "office" building, irrespective of other minor functions it may also contain.

A mixed-use tall building contains two or more functions (or uses), where each of the functions occupy a significant proportion of the tower's total space. Support areas such as car parks and mechanical plant space do not constitute mixed-use functions. Functions are denoted on CTBUH "Tallest Building" lists in descending order, e.g., "hotel/office" indicates hotel function above office function.

Residential / Hotel / Office

Structural Material
All-Steel
Both the main vertical/lateral structural elements and the floor spanning systems are constructed from steel. Note that a building of steel construction with a floor system of concrete planks or concrete slab on top of steel beams is still considered an “all-steel” structure as the concrete elements are not acting as the primary structure.

All-Concrete
Both the main vertical/lateral structural elements and the floor spanning systems are constructed from concrete which has been cast in place and utilizes steel reinforcement bars and/or steel reinforced concrete which has been precast as individual components and assembled together on-site.

All-Timber
Both the main vertical/lateral structural elements and the floor spanning systems are constructed from timber. An all-timber structure may include the use of localized non-timber connections between timber elements. Note that a building of timber construction with a floor system of concrete planks or concrete slab on top of timber beams is still considered an “all-timber” structure as the concrete elements are not acting as the primary structure.

Mixed-Structure
Utilizes distinct systems (e.g. all-steel, all-concrete, all-timber), one on top of the other. For example, a Steel Over Concrete indicates an all-steel structural system located on top of an all-concrete structural system, with the opposite true of Concrete Over Steel.

Composite
A combination of materials (e.g. steel, concrete, timber) are used together in the main structural elements. Examples include buildings which utilize: steel columns with a floor system of reinforced concrete beams; a steel frame system with a concrete core; concrete-encased steel columns; concrete-filled steel tubes; etc. Where known, the CTBUH database breaks out the materials used within a composite building’s primary structural elements.

All-Concrete

Height
Architectural
Height is measured from the level of the lowest, significant, open-air, pedestrian entrance to the architectural top of the building, including spires, but not including antennae, signage, flag poles or other functional-technical equipment. This measurement is the most widely utilized and is employed to define the Council on Tall Buildings and Urban Habitat (CTBUH) rankings of the "World's Tallest Buildings."

148.4 m / 487 ft

To Tip
Height is measured from the level of the lowest, significant, open-air, pedestrian entrance to the highest point of the building, irrespective of material or function of the highest element (i.e., including antennae, flagpoles, signage and other functional-technical equipment).
148.4 m / 487 ft
Occupied
Height is measured from the level of the lowest, significant, open-air, pedestrian entrance to the highest occupied floor within the building.
133.5 m / 438 ft
Floors Above Ground
The number of floors above ground should include the ground floor level and be the number of main floors above ground, including any significant mezzanine floors and major mechanical plant floors. Mechanical mezzanines should not be included if they have a significantly smaller floor area than the major floors below. Similarly, mechanical penthouses or plant rooms protruding above the general roof area should not be counted. Note: CTBUH floor counts may differ from published accounts, as it is common in some regions of the world for certain floor levels not to be included (e.g., the level 4, 14, 24, etc. in Hong Kong).

42

Floors Below Ground
The number of floors below ground should include all major floors located below the ground floor level.

6

# of Apartments
Number of Apartments refers to the total number of residential units (including both rental units and condominiums) contained within a particular building.

184

# of Hotel Rooms
Number of Hotel Rooms refers to the total number of hotel rooms contained within a particular building.

297

# of Parking Spaces
Number of Parking Spaces refers to the total number of car parking spaces contained within a particular building.

470

Tower GFA
Tower GFA refers to the total gross floor area within the tower footprint, not including adjoining podiums, connected buildings or other towers within the development.

162,550 m² / 1,749,674 ft²

Rankings

#
7330
Tallest in the World
#
170
Tallest in Oceania
#
166
Tallest in Australia
#
78
Tallest in Melbourne

Construction Schedule

2014

Proposed

2016

Construction Start

2020

Completed

Owner/Developer
Architect
Design

Usually involved in the front end design, with a "typical" condition being that of a leadership role through either Schematic Design or Design Development, and then a monitoring role through the CD and CA phases.

MEP Engineer
Design

The Design Engineer is usually involved in the front end design, typically taking the leadership role in the Schematic Design and Design Development, and then a monitoring role through the CD and CA phases.

Project Manager

The CTBUH lists a project manager when a specific firm has been commissioned to oversee this aspect of a tall building’s design/construction. When the project management efforts are handled by the developer, main contract, or architect, this field will be omitted.

Contractor
Main Contractor

The main contractor is the supervisory contractor of all construction work on a project, management of sub-contractors and vendors, etc. May be referred to as "Construction Manager," however, for consistency CTBUH uses the term "Main Contractor" exclusively.

Other Consultant

Other Consultant refers to other organizations which provided significant consultation services for a building project (e.g. wind consultants, environmental consultants, fire and life safety consultants, etc).

Environmental
WSP
Façade

These are firms that consult on the design of a building's façade. May often be referred to as "Cladding," "Envelope," "Exterior Wall," or "Curtain Wall" Consultant, however, for consistency CTBUH uses the term "Façade Consultant" exclusively.

Lighting
WSP
Quantity Surveyor
Vertical Transportation
Material Supplier

Material Supplier refers to organizations which supplied significant systems/materials for a building project (e.g. elevator suppliers, facade suppliers, etc).

Elevator
Owner
Developer
Architect
Design

Usually involved in the front end design, with a "typical" condition being that of a leadership role through either Schematic Design or Design Development, and then a monitoring role through the CD and CA phases.

Structural Engineer
Design

The Design Engineer is usually involved in the front end design, typically taking the leadership role in the Schematic Design and Design Development, and then a monitoring role through the CD and CA phases.

4D Workshop
MEP Engineer
Design

The Design Engineer is usually involved in the front end design, typically taking the leadership role in the Schematic Design and Design Development, and then a monitoring role through the CD and CA phases.

Project Manager

The CTBUH lists a project manager when a specific firm has been commissioned to oversee this aspect of a tall building’s design/construction. When the project management efforts are handled by the developer, main contract, or architect, this field will be omitted.

Contractor
Main Contractor

The main contractor is the supervisory contractor of all construction work on a project, management of sub-contractors and vendors, etc. May be referred to as "Construction Manager," however, for consistency CTBUH uses the term "Main Contractor" exclusively.

Other Consultant

Other Consultant refers to other organizations which provided significant consultation services for a building project (e.g. wind consultants, environmental consultants, fire and life safety consultants, etc).

Access
B4 Compliance; Mr P Studios
Environmental
WSP
Façade

These are firms that consult on the design of a building's façade. May often be referred to as "Cladding," "Envelope," "Exterior Wall," or "Curtain Wall" Consultant, however, for consistency CTBUH uses the term "Façade Consultant" exclusively.

Interiors
Hachem
Land Surveyor
Bosco Jonson
Landscape
Oculus
Lighting
WSP
Planning
Urbis Pty Ltd
Quantity Surveyor
Traffic
Ratio: Consultants Pty Ltd
Vertical Transportation
Waste Management
Salt3
Way Finding
Fabio Ongarato Design
Wind
MEL Consultants Pty Ltd
Material Supplier

Material Supplier refers to organizations which supplied significant systems/materials for a building project (e.g. elevator suppliers, facade suppliers, etc).

Elevator

CTBUH Awards & Distinctions

Best Tall Building, by Height, 100-199 meters 2022 Award of Excellence

2022 CTBUH Awards

Best Tall Building, by Function, Mixed-Use 2022 Winner

2022 CTBUH Awards

Best Tall Building, by Region, Oceania 2022 Winner

2022 CTBUH Awards

 

CTBUH Initiatives

CTBUH Australia Explores the Design of Collins Arch

7 June 2018 - Event

 

Videos

03 November 2017 | Melbourne

447 Collins St – Linking of Towers via Skybridge

447 Collins Street is a significant mixed-use precinct development comprising commercial office, 5-star hotel, luxury apartments, basement car parking and extensive public realm landscaping in...

 

Research

30 January 2020

Tall Building Predictions for 2020

CTBUH Research

The combined brains of the CTBUH editorial and database staff boldly predict what might happen across the global skyscraper industry in 2020. Check out our...

About Collins Arch

Designed in response to planning regulations seeking to limit shadows cast upon the Yarra River to the south, Collins Arch occupies a full 6,000 square meter city block in the center of Melbourne’s Central Business District. Composed as two buildings with linked floor plates flanking a large open void, the project had been planned as a mixed use concept, taking advantage of the central location which offers amenities and accessibility for a multitude of building functions. Within Collins Arch is 50,000 square meters of office space, a five-star hotel, retail, restaurants, over 200 luxury residential apartments and 2,000 square meters of civic space.

The building façade composition has an emphasis on articulation and texture, breaking down the scale of the building as it meets the street. The residential units of the upper floors feature a series of setbacks, providing occupants with outdoor terraces as the upper floors tapper towards the skybridge of connecting floor plates containing resident amenities. The base of the building was arranged around outdoor public space with focus on enhancing central Melbourne’s active streetscapes.

CTBUH Awards & Distinctions

Best Tall Building, by Height, 100-199 meters 2022 Award of Excellence

2022 CTBUH Awards

Best Tall Building, by Function, Mixed-Use 2022 Winner

2022 CTBUH Awards

Best Tall Building, by Region, Oceania 2022 Winner

2022 CTBUH Awards

30 January 2020

Tall Building Predictions for 2020

CTBUH Research

The combined brains of the CTBUH editorial and database staff boldly predict what might happen across the global skyscraper industry in 2020. Check out our...

30 October 2017

Connecting the City: People, Density & Infrastructure

CTBUH 2017 Conference Speakers

The future of humanity on this planet relies on the collective benefits of urban density; reducing both land consumption and the energy needed to construct...