ASI Seminar: Why is Grocon now

using Steel?

PIC (WA) Specialists in: Resources Projects Process Equipment Bins & Chutes General Fabrication & Buildings Multi-storey: Brookfield Place 50 Storeys & 10,000 tonnes Brookfield Place Tower 2 22 Storeys & 3,000 tonnes Cloisters Project 13 Storeys & 850 tonnes

480 Queen Street

• 1. Project Challenges • 2. Project Safety • 3. Steel Erection • 4. Lessons learnt to

“Better Ways”

480 Queen Street

• 1. Project Challenges – Design Development – Challenging Program – Site Street Access – Space on Site

480 Queen Street

• 1. Project Challenges • 2. Project Safety

– Full climbing screens – Conventional rigging

processes

Edge Protection:

Commences with pre-assembled handrail units bolted to the permanent edge beams After completion of 3-4 floors, install climbing screen system

Access Equipment

Decking Installation Methodology

480 Queen Street

• 1. Project Challenges • 2. Project Safety • 3. Steel Erection

– Planning – Logistics – Resources

• Craneage • Space

Logistics, logistics, logistics

480 Queen Street

• 1. Project Challenges • 2. Project Safety • 3. Steel Erection • 4. Lessons learnt to

“Better Ways” – Why should we build

multi-storey structures in steel?

WHY SHOULD BE BUILD MULTI-STOREY STRUCTURES IN STEEL?

• Speed of Construction • Reduced Workforce on site • Reduced Building Structure weight – foundations • Reduced Material Deliveries to Site • Reduced Waste to be removed from site • Future-proofing of buildings – eg for tenant fitout

Why Build in Steel?

All good stuff We’ve heard it all before... So lets value some of these benefits

Example: • 20 Storey Building • 1500m2 NLA per floor • Steel framed floor including decking & slab

– Steel frame $ 200/m2 – Decking $ 80/m2 – Reinf & concrete $ 120/m2 – Total Floor Cost $ 400/m2

• Total Floor Structure Cost = $12,000,000 • (excludes columns)

Example:

Builders Preliminaries – Staffing, Tower crane hire, site overheads

• Say $50,000 to $100,000 per day

Future Rental:

WA today.com.au • Perth-based businesses are now forking out among the most expensive

office rents in the world and well above other Australian cities, according to new figures.

• Resources companies are being blamed for scooping almost two-thirds of the city's sparse office space, causing vacancy levels to tumble and rents to skyrocket.

• Perth now has the seventh highest office rental price in the Asia Pacific, ahead of all Australian cities and overseas business hubs such as Bangkok, Seoul and Taipei, according to global commercial real estate group Jones Lang LaSalle.

• New rental contracts in Perth CBD are now fetching an average $550 per square metre, much more than the second highest Australian city, Sydney ($411 per square metre).

Example:

Builders Preliminaries – Staffing, Tower crane hire, site overheads

• Say $75,000 per day

Future Rental on 30,000m2: • $317,000 per week

Example:

Program Benefits: • 6 Day floor to floor cycle for steel frame • Anticipate 9 days for concrete frame • 2 week benefit due to following trades not

hampered by back-propping Nett result on 20 storeys:

12 Weeks Saving

Example:

• Cost of Steel Framed Floor = $12,000,000

SAVINGS DUE TO PROGRAM BENEFITS:

• Saving on Builders Preliminaries = $4,500,000 • Early Rental Gross Return = $3,800,000

• Nett Cost of Steel Frame = $4M !!!

480 Queen Street

• 1. Project Challenges • 2. Project Safety • 3. Steel Erection • 4. Lessons learnt to

“Better Ways” – Use of Technology

Are We Maximising the use of the Model?????????????

Are We Maximising the use of the Model?????????????

Simple Answer

NO

Are We Maximising the use of the Model?????????????

Currently: • Detailers produce 3D models for the

production of shop drawings • Fabricators using NC files for automated

manufacture

But there is potentially so much more……….

Are We Maximising the use of the Model?????????????

Design Development Phase: • Interaction between 3D models and design

analysis software • Early estimation of project quantities

Are We Maximising the use of the Model?????????????

Tendering Phase: • Accurate estimation of project quantities

PIC now regularly produces our own MTO models for tender preparation if none provided

• Valuable tool in construction planning – Overlaying of site constraints and boundary

conditions – Overlaying of critical construction equipment –

eg tower cranes, truck access etc

Are We Maximising the use of the Model?????????????

Detailed Design Phase: • Handover of models to Steel contractor:

– Reduction in RFI’s/TQ’s

• Early Main Member modelling – Provide fabricator model to Services

contractors/consultants for services coodination – Ongoing use for detailed construction planning

Are We Maximising the use of the Model?????????????

Detailed Shop Detailing Phase: • Checking of Shop drawings Why do we use 2D drawings when a full model is available??????????????????

3D Modelling

of the Building

Capitol on Brookfield Place Perth

Access ladders, platforms and dynamic dampers

Truss to Column Detailing

Access Ladders to the Capitol

Keys to Economical Design - Off-Site Works: - Simplicity - Repetition - Maximise use of Manufacturing Technology Design for Economy on Site: - Minimise Site Labour - Minimise Site Welding - Simple Connections - Minimise or Eliminate Back-propping

How to Maximise the Benefits

Design Principles: • Maximise Simplification in connection details

– Sometimes the heavier design is the cheaper

• Maximise the opportunities for Automated Manufacture

• Concentrate complexity onto the smallest number of items (normally the columns)

Simple Secondary Beam – totally automated manufacture – beamline and cambering machine

Beamline Capabilities

•Cut to Length •Coping •Flange notches •Holing •Cut Web Penetrations

Automated Beam Cambering

The Next Technology:

• Automated blasting and painting operations

Thankyou