Lifting sling
Contents |
[edit] Introduction
A lifting sling is used with a lifting device or crane to lift objects effectively and safely. Slings usually consist of cable, chain, rope or webbing, and generally include metal devices such as hooks, shackles, links or rings. Different types of sling are appropriate for different applications, depending on their composition, working load, length, slinging mode and so on.
[edit] Types of sling
[edit] Nylon
Nylon slings are strong, dense and flexible; they will stretch by approximately 6-8% of their length. However, nylon can absorb liquid, which can affect its strenght.
[edit] Polyester
Polyester slings are are known as 'web slings' or 'rigging slings' because of their synthetic, web-like composition. Polyester differs from nylon in that its stretch is approximately 3%, and it is safe for use where bleaching agents or acids are present.
[edit] Wire rope
Wire ropes are categorised based on the number of wires in a strand and how many strands are wrapped around the core. The more wires there are, the greater the flexibility and resistance to kinks, but also the more liable they are to abrasion wear.
[edit] Chain
Chain slings are typically suited to more demanding lifting operations. They are usually constructed from Grade 80 or 100 high strength alloy steel and can be designed and fitted to create custom sling assemblies for almost any kind of lift.
Chain slings should be stored in a dry and clean area to avoid damage, rust and corrosion. They should be regularly inspected for defects, including:
- Wear and stretching.
- Bent or twisted links.
- Ineffective safety catches.
- Cuts and nicks.
- Gouges.
- Heat discolouration and welding splatter.
[edit] Related articles on Designing Buildings Wiki
Featured articles and news
Building Safety recap February, 2026
Our regular run-down of key building safety related events of the month.
Planning reform: draft NPPF and industry responses.
Last chance to comment on proposed changes to the NPPF.
A Regency palace of colour and sensation. Book review.
Delayed, derailed and devalued
How the UK’s planning crisis is undermining British manufacturing.
How much does it cost to build a house?
A brief run down of key considerations from a London based practice.
The need for a National construction careers campaign
Highlighted by CIOB to cut unemployment, reduce skills gap and deliver on housing and infrastructure ambitions.
AI-Driven automation; reducing time, enhancing compliance
Sustainability; not just compliance but rethinking design, material selection, and the supply chains to support them.
Climate Resilience and Adaptation In the Built Environment
New CIOB Technical Information Sheet by Colin Booth, Professor of Smart and Sustainable Infrastructure.
Turning Enquiries into Profitable Construction Projects
Founder of Develop Coaching and author of Building Your Future; Greg Wilkes shares his insights.
IHBC Signpost: Poetry from concrete
Scotland’s fascinating historic concrete and brutalist architecture with the Engine Shed.
Demonstrating that apprenticeships work for business, people and Scotland’s economy.
Scottish parents prioritise construction and apprenticeships
CIOB data released for Scottish Apprenticeship Week shows construction as top potential career path.
From a Green to a White Paper and the proposal of a General Safety Requirement for construction products.
Creativity, conservation and craft at Barley Studio. Book review.
The challenge as PFI agreements come to an end
How construction deals with inherited assets built under long-term contracts.
Skills plan for engineering and building services
Comprehensive industry report highlights persistent skills challenges across the sector.
Choosing the right design team for a D&B Contract
An architect explains the nature and needs of working within this common procurement route.
Statement from the Interim Chief Construction Advisor
Thouria Istephan; Architect and inquiry panel member outlines ongoing work, priorities and next steps.