Double choker hitch. Double Choker Hitch bility for longer loads (Figure 24-10).

Double choker hitch. NO LOSS IN CAPACITY RESULTS IF A CRADLE GRAB HOOK IS USED WHEN ANGLE OF CHOKE IS 120 DEGREES OR GREATER A Double Wrap Choker Hitch (Figure 19) is formed by wrapping the sling completely around the load and hooking it into the vertical part of the sling. The Double Choker Hitch if applied properly will facilitate equalization of the loading on the sling legs over the lifting hardware. SAFE WORK PRACTICES VERTICAL, CHOKER & TURNING SLING HITCHES WORK PRACTICES VERTICAL, CHOKER & TURNING SLING HIT The horizontal angle of bridles with three or more legs is measured the same way as horizontal sling angles of two-legged hitches. A better way to do the same lift. Double-choker hitch (fig. ) Calculator Usage: This calculator is provided for general purpose use only. , are secure and tightly held during lifting operations. Double choker hitch The two-leg slings used in choker hitch, basket hitch, double wrap choker hitch and double wrap basket hitch should not be used for handling composite loads such as loose bundles or tubes, bars or wooden battens unless the friction grips between the parts is sufficient to prevent them slipping from sling. Double basket hitches Balance loads by keeping slings apart. Diameter of curvature of load surface is at least double the diameter of the rope. Tough and dependable, just like the folks who use them. It discusses duties and responsibilities of riggers which include observing safety precautions, checking loads, inspecting equipment, and communicating with crane operators. net Jan 14, 2019 · Double Wrap Choker Hitch – similar to standard choker hitch, except that the sling is wrapped around the load twice. ,909-469-2251,manufacturer and safety training provider to the industrial lifting sling and rigging industries for over 30 years. Jun 24, 2025 · Uses two slings in a choker hitch that are spread to provide stability. This hitch compresses the load and prevents it from slipping out of the sling. The load must be lifted horizontally with slings of even leng h to prevent the load from sliding out. Angle of hoisting affects a sling load limit: The angle affects the working load limit. This hitch compresses the load and can help prevent it from slipping out of the sling. Spreader Bars: Spreader bars distribute the load across multiple lift points, minimizing stress on any single point and reducing the risk of tipping. You will just need a longer Study with Quizlet and memorize flashcards containing terms like Slings, Most slings, choker hitch and more. It ensures materials such as steel bars, wooden blocks, etc. Dual Sling Configurations: Using two slings in a double basket or double choker hitch offers added stability, especially for long or irregularly shaped loads. Use choker hitches at 75% or less of rated sling capacity. Feb 22, 2024 · Double choker hitch adalah metode pengikatan sling yang melibatkan penggunaan dua sling dalam pengikatan choker untuk memberikan lebih banyak area kontak guna mengamankan beban. Jan 17, 2018 · Here is a crude drawing of what I'm talking about. Can be used as a single for balanced short loads or in pairs for longer loads. Sling angles of less than 45 degrees: SWL = SWL (of single-vertical hitch) x A divided byBxHdivided byLx2. LEEA New Rigging Manual - Free download as PDF File (. proper Use of Choker Hitches For riggers, there’s more than one correct way to choke a load. Choose the right sling hitch for efficient and safe lifting operations. Most of the info I've found says that is rigging hitch is no stronger than if the chain is just singled out. The sling load is reduced due to angle of the choke. 3. Figure 6 Double choker hitch correctly and incorrectly performed Basket Hitches - Basket hitches, whether single or double, may be used successfully in a variety of applications. Choker hitch - The angle of the choke reduces the capacity of the sling 3. Now if the rigging has two ends and both ends You can do a double wrap choke on the bottom end and then lay the sling out along the length. Somewhere near the top but at least 10 ft down, put a half-hitch in your sling. Use a double wrap choker hitch and for long loads use 2 slings. If the hitch legs are vertical, the force exerted on each leg is one-third the weight of the load. It does not grip the load completely but can balance the load, making it less likely to tip. Jan 18, 2024 · Does double wrapping your sling hitch affect the WLL of the sling? How does a double-wrapped choker hitch or basket hitch affect the working load limit compared to a single choker or basket hitch? Double wrapping does not affect the sling capacity. Sep 21, 2018 · Learn how to safely use a sling choker hitch, when to apply it, and what precautions to take to avoid capacity loss and rigging failure. When done correctly the sling will remain tight while the load is turning. Never use a basket hitch to turn a load. If applied improperly, one of the legs will share a greater portion of the load and equalization will not occur. Take A/B=3/4 As for as possible the angle between the two slings to be ensured less than 90 dig , so that only limited excess weight is coming on each sling. The double wrap compresses the load on all 4 sides and provides far better load control. When using chain slings, ensure that the load is centered over the master link. Sling hitches are an essential component of lifting operations, and there are various types to choose from, each with its own strengths and weaknesses. Use a tagline to control load movement. pdf), Text File (. A choke angle less than 120 degrees can result in a capacity as low as 40% of the single leg. Which type of hitch combines the constricting power of a double-wrap choker hitch with the capacity advantages of a basket hitch? Double-wrap basket hitch Double Wrap Choker Hitch – The rope or chain is wrapped completely around the load before being hooked into the vertical part of the sling. A double choker hitch can also be used, which is the same as a choker except that an additional wrap is placed around the load. For use in Double Wrap Choke Hitch ONLY. Sling hitches: vertical, choker, double wrapped choker, double wrapped basket, etc. txt) or read online for free. This document provides guidance on safe lifting practices for engineers. The illustrations on the following pages show the proper applications for hitches that are commonly used in our industry. Innovative Technology 2. Do not run the sling through the hook, permitting an unbalanced load to tip. Sling capacity decreases as the angle from horizontal decreases. Double Choker Hitch Angle of choke is greater than 45° The rule of thumb is the capacity of the sling should be reduced by one-quarter less than the safe working load for a single vertical hitch rating. Don’ts: Vertical hitch supports the total weight of a load with a single sling at 90° to horizontal. The Double Choker Hitch if applied properly will facilitate equalization of the loading on the sling legs over the lifting hardware. Choker Hitch: When a choker hitch is used, the sling tightens as the load is lifted because there is a single attachment point (eye), helping to guard against load loss. 51K subscribers Subscribe Choker Hitch Capacity Calculator Results Reduction Factor Adjusted Rated Choker Capacity per Sling (lbs. Inspect the sling and attachment points regularly. In other words, I'm talking about 5/8 grade 100 chain, the WLL of the chain is 22,600 LB, most of the info I've found says that even in the loop configuration, the WLL is still 22,600 LB. Basket vs. The basket hitch provides the highest work load limit, while the vertical hitch limit is 50% of that and the choker hitch limit is up to 80% of the vertical hitch limit. This is because the sling leg or body is passed around the load, through one end attachment or eye and is suspended by the other end attachments or eye. Choker When it comes to lifting heavy loads, selecting the appropriate lifting method is crucial for ensuring the safety of both workers and the cargo. Do not use on loose bundles. To turn or reposition a load, either one or two lifting devices may be employed. Nov 24, 2023 · Do not use a choker hitch on a load with sharp corners that can damage the sling. SWL = SWL (of single-vertical hitch) x A/B. Choker Hitches Formed by passing one end of the sling around the load and coupling it to the upright portion of the sling with a free-running shackle or sliding hook Mar 3, 2016 · The simple choker hitch or choker hitch double wrapped method should not be used for handling composite loads such as loose bundles of tubes, or bars, or wooden battens unless the friction grips Double wrapping a choker or basket hitch does not affect the sling capacity compared to single wrapping a choker or basket hitch. Double Choker Hitch bility for longer loads (Figure 24-10). This type of hitch can be used as either a single, double or double-wrap configuration; and basket hitches cannot be used with loads that are difficult to balance. 4 Double Wrap Choker Hitch The double wrap choker hitch is a recommended lifting method, especially in situations where standard lifting eyes or attachment points are unavailable. SLING HITCHES WARNING Do not exceed rated capacities. The document also covers safety awareness Jun 27, 2023 · The sling tightens on a load as it is lifted. Preferable to locate the slings against a shoulder on the load to prevent slipping. A sling rigged in a choker hitch (single wrapped) does not ensure a full contact with the load: double wrap the load to ensure full contact. A CHAIN CHOKER HITCH HAS 80% OF THE CAPACITY OF A SINGLE LEG SLING ONLY IF THE ANGLE OF CHOKE IS 120 DEGREES OR GREATER. Choker hitch Double choker hitch, SWL=SWL of single vertical hitch x A/B X H/L x2 when the angle is less than 45 dig. Slings should never be used at angles less than 30 degrees. The smaller the angle, the less load a sling can carry Jul 7, 2023 · In this video you will get:-What is Hitch Types of HitchesSingle Choker HitchRight or Wrong attachment with single choker hitchDouble Choker HitchDouble wrap Jun 5, 2025 · Double wrap choker hitch - Some variations include double wrap basket, reduced double wrap basket, and inverted basket 2. A Basket Hitch uses a single sling that passes around the load with both ends connected to the hoist, crane, or lifting device. 1 Safety Monitoring System PA Code: PA20-073 (List of CITF Pre Vertical - When a sling is used in a vertical hitch, the full lifting capacity of the sling material can be utilized. Be sure to account for the additional length required to apply a double wrap choker hitch. • Pole must be double wrapped • Blue Gripper Pad against Pole • Web to Web Contact at Choker Eye NOT PAD TO EYE Lift-It ® Pole Handling Sling in Action. RATED LOADS FOR ANGLES OF CHOKE LESS THAN 120 DEGREES SHALL BE DETERMINED BY THE SLING MFG OR A QUALIFIED PERSON. Prevent sling slippage by keeping the angle between the load and sling 60° or more. 2-Leg Bridle Hitch (Single Piece) Choker - A choker hitch is accomplished by passing a sling around the load and through one eye or end fitting where it is then attached to a lifting hook. The contact of the sling body with the end attachment or eye causes a loss of sling strength at the choke point. Always use a choker hitch or a single-leg direct attachment. Note: If the angle is more than 45 dig. Basket and Choker Hitches Double Wrap Basket Hitch Involves placing slings under the load and keeping the legs of the hitches a proper distance apart. Select slings with sufficient length to ensure that the choke action is on the sling body, never on the sling splice, fittings, tag, eye or at the base of the sling eye or fitting. 6-21): For sling angle of 45 degrees or more: SWL = SWL (of single-vertical hitch) x 3 divided by4xHdivided byLx2. . Use slings that are long enough so that the choker hitch is effective and the "grip" is on the webbing. 2. Multiple factors like sling angle, leg length, distance from load center of gravity, and load weight distribution must Does Using a Double Wrapped Sling Hitch Lower the Lifting Capacity? The latest episode of Ask the Experts is live!Need to Schedule Remote or In-Person Riggi Compare sling hitch types with LOADMATE: Vertical, Basket, and Choker Sling Hitches. liftechniques liftechniques A 2-Sling Double Wrap Basket Hitch is also a good choice for multiple pieces of pipe. It uses a flat webbing sling, creating a cradle-like support with two loops. The load on each leg must be calculated based on the position of the slings and the location of the lift’s center of gravity. A much safer choice for a stack of loose pipe would be a 2-sling double wrap choker hitch or a 2-sling double wrap basket hitch, which would secure the pipe for lifting. Double basket hitch Uses two two single basket hitches to blaance the load. Sep 22, 2023 · Choosing the Right Sling Hitch for Your Lift: Vertical vs. A choker hitch has 75% of the capacity of a single leg sling only if the angle of choke is 120 degrees or greater. Sep 14, 2020 · This rigging setup uses a double line arrangement with two choker hitches to stabilize the long load. You’ll just need a longer sling to double wrap it. DETERMINING CAPACITY OF DOUBLE CHOKER HITCH Double Wrap Choker Hitch Depending on configuration, working load limits are the same as for the Single Choker Hitch or the Double Choker Hitch. This hitch is in full 360° contact with the load and tends to draw it tightly together. When turning a load: Use a doubled choker to turn loads, which is a double up of a single choker hitch, and is different than a double choker hitch. The two-leg slings used in choker hitch, basket hitch, double wrap choker hitch and double wrap basket hitch should not be used for handling composite loads such as loose bundles or tubes, bars or wooden battens unless the friction grips between the parts is sufficient to prevent them slipping from sling. A 2-Basket Hitch works well on most large cylinders. This type of hitch works like the 2-Sling Double Wrap Choker Hitch referenced above in that the slings snug up evenly around the load of pipe. This method provides the greatest lifting capacity; double that of a vertical (straight) sling hitch, and about two and a half times that of a choker configuration. The double wrap hitch or the double wrap choker hitch provides full 360 degree contact with the load. These single leg slings can be made of larger diameter rope to better withstand load conditions. Never attempt to turn a load with a basket since the load will slide in the hitch against the sling body—resulting in damage to both the sling and the load, and possibly a dropped load. 4. It is the responsibility of the user to assure that the data they enter is accurate and that the slings they use are appropriate for their application. There are three primary sling hitches used to carry loads: vertical hitch, basket hitch, and choker hitch. For large loads a 4-leg bridle sling can be made into a double basket sling by adding 2 single leg slings. Lift-It Mfg. Mar 3, 2025 · The basket hitch is a rigging technique designed for lifting loads with even weight distribution. Inc. And they are less expensive to replace than the entire 4-leg sling. Vertical Hitches Do’s Make sure the load is balanced correctly. If a bridle is designed with different leg lengths, it may result in different horizontal angles. It provides more contact areas to secure a load. However Represents a load in choker hitch and illustrates the rotary force on the load and/or the slippage of the rope in contact with the load. A 2-Sling Double Wrap Basket Hitch is also a good choice for multiple pieces of pipe. liftechniques liftechniques Choker Hitches Choker Hitch configurations affect the WLL of a sling. For lossely bundle Figure 24-10: Double Choker Hitch The DWG file includes AutoCAD symbols of different types of lifting equipments. Basket hitch: A basket hitch is described by federal OSHA as a sling configuration whereby the sling is passed under the load and has both end attachments, eyes or handles placed on the lifting hook or a single master link. See full list on practicalmaintenance. Choker - Due to the stress created at the choke point, slings rigged with this hitch achieve only about 75% of their potential capacity. In this blog, we will 6 double wrap choker hitch Kentucky Welding Institute 5. xhdvgkd rgohqmk qjote gdelynlue xtekf xtsjazb llqso fsbhkv fet okyzs