How to Properly Lift Heavy Loads Using a Webbing Sling
Webbing slings play a key role in the lifting and rigging industry. They are used for heavyduty lifts, transport of materials, and securing loads in handling. They are light in weight, elastic, and very versatile, for use on fragile, awkward, or irregular loads, unlike the conventional lifting chains or wire ropes. Although webbing slings are very effective, they should be correctly applied in order to ensure that lifting is carried out safely and efficiently.
In this guide, we are going to learn the necessary steps on the proper use of the webbing sling in lifting heavy loads, from selecting the right sling to its inspection before and after use, as well as safety practices.
What is a Webbing Sling?
A webbing sling is the use of synthetic fibers, such as nylon or polyester straps; these are used primarily to lift and move heavy loads in a safe manner. The tensile strength is reasonably high, although because they are lightweight and flexible, slings can be made available for use even in confined space or around objects of unique forms.
Webbing slings usually come in different configurations: flat, round, and endless, which is suited for specific applications. It offers flexibility that prevents any damage to the load as it forms a very good application in most industries: construction, manufacturing, and logistics.
-
Selecting the Right Webbing Sling for the Job
In lift operations, the correct webbing sling must be selected to meet the special needs of the lift before it is used. Some considerations in choosing the right webbing sling are described below.
-
a) Load Capacity
Every webbing sling has a rated load capacity, which is the amount of weight it can safely lift. The capacity of a webbing sling thus depends on the material type, the thickness in millimeters, and how it was constructed. Ensure that the webbing sling you use has a load capacity surpassing the weight of the load you want to lift.
Read the label: Webbing slings carry a label showing the load capacity for the specific lift configuration. Be sure to never exceed the load limits provided, as this can lead to accidents and possible injury of personnel or damage to the load.
Angle in Lifting: When using a webbing sling in slung configurations, for instance, in a basket hitch, the angle of the sling changes. The lower the angle, the higher it increases strain in the sling, meaning its effective load capacity will be lower. Thus, there will be a need to take care not to exceed limits as suggested concerning the angle of the sling.
-
b) Length and Size of the Sling
The length of the slings and their size should enable reaching the load without causing an excess of slack. Slinging too short will place undue stress on either the sling or load. Too long can make the lift inefficient and unstable.
Balance slack: There must be enough slack in the sling to keep the load moving safely without its instability.
Check the width: Wider webbing slings for heavy loads minimize any potential damage to the load because the weight is evenly distributed across the sling.
-
c) Type of Webbing Sling
There are several types of webbing slings, namely:
Flat slings: These slings are used to lift materials that have flat or smooth surfaces.
Round slings: These are used for lifting irregularly shaped or fragile materials since they distribute weight more evenly.
Slings Infinite slings: Versatile slings which can be used in a broad variety of configurations and are often used when a flexible lifting solution is required.
-
Inspection of the Webbing Sling Before Use
Preuse inspection is also a requirement in the use of a webbing sling. Over time, repeated usage or harsh weather conditions and rough handling may cause the sling to wear out. A damaged sling can be dangerous; it is thus right that one inspects the sling before each use.
-
a) Visual Inspection for Wear and Tearing
The webbing sling should be inspected for cuts, frays or any other obvious damage. Any sling found to be damaged must be withdrawn from service and replaced. Look for:
Cuts or nicks in the fabric.
Edges or slings with frayed edges.
Appearance of burning, discoloration from heat, chemicals, or exposure to UV.
-
b) Inspect the Fittings and Hardware
In the case that the webbing sling provided with hooks, rings, or other hardware, ensure that these parts are in good condition. Check for cracks, corrosion, and any other signs of failure. Damaged hardware can cause failure during lifting.
-
c) Manufacturer Label
Search for the manufacturer’s label on the sling that will identify its rated load capacity, type of material, and also your safety warning. The label ensures that the sling is safe for your lifting application.
-
Safe Rigging of Webbing Sling
Proper rigging of the webbing sling is important for effective safe lifting. Improper rigging could lead to a load instability, damage the sling, or an accident. The common rigs are as follows:
-
a) Vertical Lift
A vertical lift is one of the easiest lifts used with a webbing sling. The lift is one in which the load passes straight up vertically and goes around the load with the sling. The direct force of the load acts on the sling.
Good attachment: Securely attach the sling to the lifting hook or crane. When attaching with a hook, make sure the hook is fully seated into the fitting of the sling.
Centered load: Position the load in the middle of the sling to prevent swinging and rolling in every direction as it leaves the ground.
-
b) Basket Hitch
A basket hitch is a common application for heavier loads or when a more stable lifting configuration is needed. In this position, you double over the webbing sling and lift the load via both ends of the sling.
Even weight distribution: Ensure to have it evenly wrapped around the load for an even distribution.
Angle of Lift: Not too tight to avoid overload on the sling.
-
c) Choker Hitch
A choker hitch is used to tie the load up closely by the sling. In this, the sling is passed around the load and the free end passed through the loop to achieve a choke. This type of rigging is ideal for loads, such as vessels that need to be tied in place and lifted.
Do not mark the load : When using a choker hitch on sensitive materials, be extra careful as the sling is likely to exert pressure on the load with probable damage.
Safe Load Lifting
When lifting using a webbing sling, you are expected to use proper lifting techniques that ensure safety for workers and integrity of the load.
-
a) Use the Correct Crane or Hoist
Make sure that the hoist or crane used to lift the load is suitable in weight and type. Always ensure that all the equipment used is properly maintained and in good working condition before use.
-
b) Lift Slowly and Steadily
Lift steadily and take your time. Sudden jerks should be avoided as these can make the load swing or shift, thereby increasing the chances of being injured or breaking up equipment. Lift the load slowly and steadily while avoiding jerky movements when lifting a load.
-
c) Steer Clear of the Load
All personnel should stay out of the load’s way when it is being lifted. Never stand underneath or in direct line with the load. Remove workers and obstructions from around the area of the lift.
-
PostLift Procedures and Storing
When the load has been successfully hoisted and swung to its final location, the sling webbing should be subjected to followup posthoisting inspection and then stored.
-
a) Carefully Unhook the Sling
Once the load is in place, slowly and carefully unlash the webbing sling. There should be no quick jerks or pulls since this can cause an unintended extension or damage to the sling.
-
b) Clean and Inspect After Use
Clear out the sling from any dust, chemicals, and other debris that might have collected during it once it is out of service. Make an inspection for any signs of wear or tear even if it appears to be fine. Thorough cleaning and maintenance extend the life cycle of a sling.
-
c) Store Properly
Webbing slings should be kept in a dry cool place free from direct sunlight, chemicals, or excessive heat. If slings are stored properly, material degradation will not occur, and they can be used later for repeated occasions.
Conclusion
When slings are proper, utilized properly, and maintained well, webbing slings are recognized as a safe and efficient lifting method. Be sure to apply the right sling to the job, inspect before each use, and after each use, and to follow the proper rigging and lifting techniques. This way, you will ensure safety, prevent damage to the load, and also extend the life of your webbing slings.