Contents

• What is Heavy Lift

• Why use it

• How does it work

• Where can it be used.

What is Heavy Lift?

• “Heavy Lift” is the application of a controlled force

in the movement or handling of a heavy or award

load.

• An object can be lifted, lowered, pushed, pulled, &

rotated or any combination of all of the above

• Heavy Lift has been used underground,

underwater, on water, on land, in and even on top

of the world’s tallest structures.

The Benefits of HL

• Safety

• Economy & efficiency

• Reliability

The Benefits of HL

• Safety

– Minimises workers at height.

– Engineered lifts based on

determinable loads at all times.

– Control of lifts are to mm.

– Factors of safety are > 2.5,

– redundancy in multiple strands

The Benefits of HL

• Economy & efficiency

– Enables prefab / mod construction reducing high

risk activities & manhours on site and improving

quality

– Can hold structures aloft for fit out for extended

periods at low or high levels

– Cheaper than crane(s) options in certain

circumstances e.g. large dual cranes

– “unlimited” in capacity

– Enables multi-point support configurations hence

less deflection issues.

The Benefits of HL

• Reliability

– Minimises “wind off” losses

– Not subject to limitations of availability

of large cranes

– System based on “tried & tested” post

tensioning plant & equipment

How does it work

• The “work horse” of the heavy lifting

system is typically strand jacks and

fixed displacement hydraulic pumps.

• Double acting centre hole jacks similar

to the those used in the post tensioning

industry are used. In HL jacks the

permanent anchor typically left behind

in the structure in PT works becomes

the “bottom” anchor which is housed

within a “de-tensioning” chair. The jack,

chair and bottom anchor now forms the

HL jack.

How does it work

• Multiple high tensile steel strands provide

efficient “flexible” tensile elements.

15.2mm dia = 260kN UTS.

• Jacks can be grouped or used singularly

but being supplied by fixed volumes of oil

units can be regulated to provide

synchronised multi-point lifts

Applications in practice

• Civil Infrastructure

• Building

• Roofs

• Industrial

• Marine

• Others - Testing

Civil Infrastructure

Thailand – Industrial Ring Road

Thailand – Industrial Ring Road

Daichi Bridge - Taipei

Hong Kong – Stonecutters Bridge

Hong Kong – Stonecutters Bridge

China – Nanjing 2nd Bridge

Australia – Alfords Point Bridge ILM – Braked Launching System

Australia – Alfords Point Bridge ILM – Braked Launching System

Australia – Werribee Aqueduct ILM – Launching System

Australia – Toombul Box Jacking

Buildings

U.A.E. – Dubai, Burj Al Arab

U.A.E. – Dubai, Burj Al Arab

U.A.E. – Dubai, Burj Al Arab

Malaysia – Petronas Towers

Roofs

Thailand – Suvarnabhumi Ariport

Thailand – Suvarnabhumi Ariport

Korea – Pusan

Korea – Pusan

Thailand – Thai Airways Hangar

Australia – Perth Arena

Industrial

Singapore – Tuas line TBM Lowering

Singapore & Malaysia – Energy Heavy Lifts

Marine

Australia – Northwest Shelf

Malaysia – Jacket Load outs

Thank you