ASME B30

  1. The Cordage Institute: Fiber Rope Requirement Criteria

    The Cordage Institute: Fiber Rope Requirement Criteria

     

    The Cordage Institute

    When it comes to working at-height, inspecting your equipment can make all the difference in job site safety. We’ve covered rope inspection in a previous blog post. You can find that post by clicking here. This week our Gear Experts® are going to provide a broad overview of the organization that sets standards for inspection.

    The Cordage Institute


     

    Fiber rope standards are established by an organization called the Cordage Institute. The Cordage Institute was founded in 1920 and is comprised of a group of fiber rope manufacturers, their suppliers, and affiliated end-user organizations. While the cordage institute sets a wide variety of standards for a wide variety of uses, the standard that is of interest to our industry is the International Guideline for Fiber Rope Inspection and Retirement Criteria – specifically section 4 (CI 2001-04).

    In this post, we're giving a brief overview of the subject matter discussed in the Fiber Ropes, General Standard (CI-1201) which covers the general characteristics and requirements for all fiber cordage and ropes which you can order in full here.

    CI-1201


     

    As we mentioned above, CI-1201 covers the general characteristics and requirements for all fiber cordage and ropes. We'll touch on characteristics that are tested for like Minimum Breaking Strength (MBS), Working Load Limits (WLL), and Safety Factor and the different packaging requirements for commercial use.

    Rope Packaging Labels for Commercial Use

    When buying rope, a unit should have a label noting the product description, diameter/size, weight/length, material, minimum breaking strength (MBS) or working load, the manufacturer's name and address, and country of origin.  This is the basic set of variables you need to know to estimate how your rope will or will not work in a given scenario.

     

    Minimum Breaking Strength

    Simply put, minimum breaking strength (MBS) is the lowest amount of force required to break an object. As mentioned, MBS should be listed on the packaging label.

    Working Load Limit

    In order to determine the Working Load Limit (WLL), you will need to know the Minimum Breaking Strength. Each manufacturer's ratings are different due to different construction processes and materials. To figure for WLL, you will take the MBS and divide it by the Factor of Safety.  

    Factor of Safety

    The default safety factor to which synthetic rope can be subjected is one-tenth (10%) of the manufacturer's documented MBS. It's worth noting that the safety factor accounts for strength reductions associated with knotting/termination and losses in strength and efficiency as the rope passes through sheaves. This should help to explain why the safety factor exceeds the more common 5:1 factor found regularly in ASME B30 for other rigging components.

    So, if you have a 1/2'' Double Braid Polyester rope with an MBS of 11,000 lbs., and dividing your default safety factor of 10, you end up with a WLL of 1,100 lbs.

    11,000 MBS / 10 = 1,100 WLL

     

    More Rope Information:

    Get a free downloadable rope log or learn more about ropes in our Knowledge Base.

    If you’ve got any questions about rope, rope inspection, or rope retirement, click here to contact one of our Gear Experts®.

    Click here to see our full selection of rope.

    Click here to download your free rope inspection log.

    Click here to see all of our rope focused blog posts.

    **The content of this blog is not intended to replace proper, in-depth training. The manufacturer’s instructions must also be followed and reviewed before any equipment is used. The use of rope and cordage products has inherent safety risks which are subject to highly variable conditions and which may change over time.

    Compliance with standards and guidelines of the Cordage Institute does not guarantee safe use under all circumstances, and the Institue disclaims any responsibility for accidents that may occur. if the user has any questions or uncertainties about the proper use of rope or cordage or about safe practices, consult a professional engineer or other qualified individuals.

    Rope Videos: The Playlist


     

    Gear Up with Gear Experts: The Podcast


     

    If you haven’t already checked out Gear Up with Gear Experts, our podcast dedicated to at-height, industry, and construction, it is available for download! You can find it on all major podcast listening platforms like Apple Podcasts, Spotify, Google Play Music, + your favorite podcatcher of choice. And, you can head on over to gearexperts.com to follow us on social media, check out our detailed show notes, and sign up for updates.

     

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  2. Shackles 101

    When it comes to lifting and rigging, knowing the hardware you are using is an important part of safety. A common piece of hardware used in lifting and rigging is a shackle. A shackle is a metal link, typically U-shaped, closed by a bolt or screw. Shackles are typically made from forged steel to provide very high tensile strength. Many US contractors have begun requiring domestically made shackles. This week our Gear Experts® are going to break down shackles.

    Domestic vs. Foreign


     

    It was mentioned above, but now it’s time to break it down further. Many US contractors have started requiring shackles that are made domestically. A domestic shackle is a shackle that has been made in the United States. They are often preferred to foreign made shackles due to better manufacturing and testing processes. Crosby, one of the most popular shackle manufacturers in the world, has a full selection of domestically manufactured shackles to meet your needs no matter what the job site requires.

    Screw Pin vs. Bolt Shackles


     

    Each job is unique and that means requirements are different. Not to mention, contractors may have preferences in addition to requiring domestic shackles. Apart from common things like U-shape size and capacity, the main difference between shackles will be whether they are a screw pin or a bolt shackle.

    Screw Pin

    A screw pin shackle is pretty self-explanatory. It is a type of shackle where the pin has a male threaded end, which tightens into the female threads in the body of the shackle. These shackles are popular because of their ease of use and are most commonly used on jobs that don’t require heavy duty attachment.

    Bolt

    A bolt shackle is pretty self-explanatory as well. It is a type of shackle where the pin has a male threaded end which is fed through the body of the shackle and secured with a bolt on the outside of the shackle. These shackles aren’t as easy to use as the screw pin shackles because of the requirements of securing the bolt to the pin. However, bolt type shackles are typically a better solution for jobs that require heavy duty attachment.

    Standards: ASME B30


     

    When it comes to lifting and rigging, which happens to include shackles – if you’re using them in a lifting and rigging capacity, the ASME B30 Standard is something that you need to be mindful of. The ASME B30 standard focuses on setting the standards for materials, rated loads, identification, inspection, repair, and removal. ASME B30 covers blocks and a range of other hardware used for lifting and rigging. We covered ASME B30 and provided a full breakdown of the standard in a previous blog post. You can find that post here.

    If you’ve got questions about shackles, standards, or domestic manufacturers, click here to contact one of our Gear Experts®.

    Click here to see our full selection of shackles

    Click here to see our full selection of Crosby hardware

    Click here to see our full selection of lifting and rigging equipment

    **The content of this blog is not intended to replace proper, in-depth training. Manufacturer’s instructions must also be followed and reviewed before any Fall Protection Equipment is used.

    Shackles 101: The Video


     

    Gear Up with Gear Experts: The Podcast


     

    We're also proud to announce Gear Up with Gear Experts® - A podcast dedicated to at-height, industry, and construction. Gear Up with Gear Experts® is available via your podcast listening platform of choice and in each episode, the hosts (Alex Giddings & John Medina) bring in a gear expert or industry leader to talk about gear, gear safety, tips, and tricks. To find out more about the show and sign up for alerts, head on over to gearexperts.com.

     

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  3. Product Spotlight: The Rock Exotica MHP55

    The MHP55 from Rock Exotica has changed the game when it comes to lifting and rigging. This super-efficient, light, and versatile block is a must have for many rigging plans. This week our Gear Experts® are going to discuss why this block is such a great piece of equipment.

    ASME B30 Standard


     

    The Rock Exotica MHP55 meets the critical ASME B30 Standard for lifting and rigging. More specifically, Chapter 26-5 which covers rigging blocks, like those you would use with a capstan hoist on a tower. We covered the ASME B30 standard in a previous blog post. Click here to check out that blog post.

    Features


     

    This material handling 2.6 inch block features a red side plate to help differentiate it from other Omni-Block pulleys. The working load limit (WLL) is also a stout 4,500 pounds making it one of the strongest blocks in this category, even when compared to other steel blocks. A major advantage of this block is its ease of use. The side plates swing open, so you can install the rope while not detaching it from the system. Then, it locks back into place with a two-stage double-catch safety mechanism. The extremely efficient ball-bearing sheave reduces friction while lifting and rigging. It also has a swivel at the top to help the block align with the system. Last, but certainly not least, is rope compatibility. This block accepts ropes between 3/8 and ½ inch.

    **The content of this blog is not intended to replace proper, in-depth training. Manufacturer’s instructions must also be followed and reviewed before any equipment is used.

    Click here to see the Rock Exotica MHP55 Omni-Block

    Click here to see our full selection of Rock Exotica Items

    Click here to see our full selection of Blocks

    Click here to see our ASME B30 Standard Guide

    The Ultimate Rigging Block


     

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    We’re Also on Snapchat


     

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  4. Blocks for Lifting & Rigging: ASME B30

    Whether you are lifting or rigging, the block you choose is one of the most important decisions you will make. Your gear is the difference between a job well done and an accident with unforeseen consequences. Our dedicated Gear Experts® have spent years sourcing the best, and most reliable equipment to help you get the job done safely. This week we are focusing on blocks and the ASME B30 standard.

    We offer a wide range of blocks to fit all of your rigging and lifting needs. But, what exactly should you be looking for when choosing a block? Well, the most important things to look for are covered by the ASME B30 standard for lifting and rigging. More specifically, Chapter 26-5 which covers rigging blocks, like those you would use with a capstan hoist on a tower.

    Materials


     

    The rigging block should be able to permanently deform before losing the ability to support the load. This ensures that you should notice the block has been overloaded before it fails. We will cover inspection shortly, but remember that proper inspection is extremely important.

    The side plates should be made of metal, wood, or a synthetic material. Obviously, you’ll almost always see steel or aluminum blocks in the tower industry. The sheaves and load-bearing straps or fittings should be made of metal as well.

    Rated Loads


     

    Load weight should always be kept within the recommended limits of the manufacturer. It is also important to remember that this limit is the maximum load applied, not a single load line. What this means is that if the block is rigged at the top of the tower and you’re lifting something that weighs 1,000 pounds, there could be up to 2,000 pounds of total weight on the block. These concepts can get pretty complicated and are outside of the range of a blog post. For more information, check out a competent rigger training course.

    Proper Identification 


     

     

     

    ASME B30 26-5.5 covers proper identification. Each block has to have markings providing the manufacturer, rated load, and acceptable rope sizes. The block should also be maintained by the user to ensure these markings remain legible through the life of the hardware.

     

     

     

    Inspection, Repair, and Removal


     

    A qualified person should designate whether the hardware is suitable for rigging, and remove it from service if it’s not. Prior to use, all blocks should be inspected to verify compliance with ASME B30. A visual inspection should be performed each time the block is used. Permanently installed rigging hardware should have periodic inspections as well. Written records are not required for these inspections, but remember, if it doesn’t pass inspection you must remove it from service. Written records may not be required, but they are recommended. It makes it much easier to track inspection and keep everyone safe while on the job.

    If a block shows any of the following during inspection, they cannot be used in the field and should be replaced.

    • Missing or illegible identification
    • Misalignment or wobble in sheaves
    • Excessive sheave groove corrugation or wear
    • Loose or missing nuts, bolts, cotter pins, snap rings, or other fasteners or retaining devices.
    • Indications of heat damage or arc strikes
    • Excessive pitting or corrosion
    • Bent, cracked, twisted, distorted, or broken load-bearing components
    • Excessive wear, nicks, or gouges
    • 10% reduction of the original dimensions at any point on the device
    • Excessive damage to load-bearing threads
    • Evidence of unauthorized welding or modifications
    • For hooks and shackles, removal criteria specified in those B30 standards
    • Any other condition including visible damage that causes any doubt as to the integrity of the block.

    Repairs of modifications must be specified by the by the manufacturer or a qualified person. The replacement parts should meet or exceed the original manufacturer specs. Unless advised by the manufacturer, modifications are not recommended.

    Operating Practices


     

    Obviously, load ratings should not be exceeded. Make sure you’re keeping clear of the block, its running lines, load, or any other part of the system during lifting. This includes walking or standing under a suspended load or lifting line. Also, don’t stand next to a rig when the line is under tension.

    As for rigging practices, avoid sharp angles or edges that could damage the block. And be sure not to drag blocks along abrasive surfaces. The load applied to the block should be in-line with the sheave to prevent side loading. Blocks with swivels help to avoid these problems.  Also, make sure your rope is securely in the groove of the sheave. Shock loading should also be avoided.

    This is not a comprehensive training. Before doing any lifting and rigging a competent rigger course should be completed. We also have a full line of training courses that are available for a range of different subjects. Those can be found here.

    Need help? Click here to contact a Gear Expert® and as always, Climb Higher®!

    Social Tags


     

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    Synthetic Rope Blocks


     

    Rope blocks that are specially labeled for synthetic rope are hard to find, but your search ends here! We have just the block you need if you are looking for a synthetic rope block. Find out more information with this YouTube video!

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