How to install and use U Bolt?

A U-Bolt is a U-shaped bolt with two threaded arms that extend up from a curved or square base. The special “U” shape of the bolt provides U-Bolts with a great deal of extra stability.

An U Bolt is commonly a type of fastener used in business construction to append any threaded rod or bolt accessory to concrete. After installing it, you will now be left with female threads in the binding material, featuring either threaded rod or bolts.

How to install an U Bolt?

Follow these five steps to ensure your U-bolt is installed correctly.

Step 1: Remove the Nuts
The U-bolt will probably come with nuts attached to its threads. Start by taking the nuts off each side of the bolt.

Step 2: Position the U-Bolt
Place the U-bolt around the object you’re attaching to the beam or support. This object is usually piping or tubing.

Step 3: Examine Your Holes
Next, make sure you properly drill holes through the support structure. If you’ve drilled through the beam, make sure you haven’t damaged its protective coating. Cracks in the coating can lead to rusting around holes. At this stage, it’s smart to touch up the beam’s surface around holes before adding your bolts.

Step 4: Thread the Bolt Through
Push the two bolt ends through the holes and thread the nuts on each end of the U-bolt.

Step 5: Fasten the Nuts
It’s good to note that nut placement on a restraint will be different from a guide. If you’re working with a restraint, you’ll want to tighten the nuts on the bottom side of the beam.

For guides, you’ll want to place one nut on the top side of the beam and one nut on the bottom side. These nuts allow proper spacing between the piping and U-bolt.

Once your nuts are in place, start by hand tightening the nuts closest to the beam first. Finally, tighten each end’s second nut. This will lock the U-bolt in place. Then, use a power tool or wrench to tighten the nuts until they’re secure.

Please browse our stainless steel U bolts selection below,

Boulon en U en acier inoxydable de type TPN avec 2 plaques et écrous

More stainless steel U bolts

Si vous avez besoin d'aide pour déterminer l'assemblage à droite ou à la taille de votre application, e-mail nos spécialistes àsales@lg-lifting.com à l'aide. 🙂

How To Plan A Shade Sail Structure – Shade Sail Installation

How To Plan A Shade Sail Structure?

Sunshade sails can be placed in a variety of ways:

1. Horizontally,where all corners are at the same height;
2. Vertically,like a privacy fence;
3. Slants & Angles with overlapping sails;
4. Or,where some corners are high and some low.

You probably already have an idea of what you want to cover or what you want to design.If you haven’t decided yet, here are some ideas for a single or multiple design looks.

A horizontal sail can be boring to look at, while a totally vertical sail could catch more wind and could produce heavier loads.

The most visually appealing situation is when two or more shade sails are used and the mounting elevations of the sails change dramatically from corner to corner.

Setting mounting points 3ft or more change in height makes for a visually stunning look.

Prior to installation, check with local authorities for any relevant building regulations which may exist, and check with the local utility companies for any underground services prior to digging holes for the support posts.

Where To Place The Shade Sail?

Before you commence installation, it is very important that you consider the most suitable location for your shade sails. Take into account the following:

1. Size of the shade sail(s);
2. Strength of existing structures intended to be anchor points;
3. Ability to insert suitable fixing posts;
4. Location of barbecue grills, fire pits, and other high heat sources;
5. Sun direction and path tracking;
6. Wind speeds typical and maximum expected for your area.

Find a suitable anchor point for each corner of the shade sail, such as those listed below. These need to be strong enough to take the strain of the shade sail material when tensioned.
Anchor points could be:

1. A wall or strong beam
2. A suitable tree
3. A wooden post at least 100mm diameter set in the ground.
4. A metal pole at least 48mm diameter set in the ground.
5. A metal pole at least 48mm diameter fitted into a sleeve in the ground, like a rotary washing line.

Fixing points should be at least 7ft 10inches above the ground, and it is extremely important that these are sufficiently strong to take the full weight of the shade sail in windy conditions.

The wind can add significantly to the stress of the shade sail on any fixings, so it is vital to be certain that they can stand the additional drag.
NB: If you have any doubts you should take advice from a builder or structural engineer.

Posts

If you need to install posts, these should be 48mm wide galvanised steel which is 4mm thick (these can be easily painted if required).

Posts should be angled away from the centre of the shade sail by at least 10 degrees to provide additional strength and stability.

Footings
Footings for posts for shade sails up to 16ft 5inches should be 400mm square and 800mm deep and this should increase to 400mm x 1200mm for larger sizes.

Foundations
Concrete
Concrete should be well packed down around the post and sloping slightly outwards at the top to ensure water does not collect around the post. This should be left for a minimum of 48 hours to allow it to set completely before you attach the shade sail. We do not recommend the use of rapid set concrete.
1. Firm ground
Lay a 100mm depth of 20mm gravel at the base of the post. Add concrete and brace post on the angle.
2. Soft ground
Pour a 100mm depth of concrete at the bottom of the hole to provide a solid pad. Allow this to set. Add the gravel at the base of the post. Add concrete and brace post on the angle.

Wall

Once you have decided on a suitable site, the shade sail should be laid out in position on the ground allowing an additional 10% at each corner for tensioning.

For larger gaps you may require stainless steel cable or similar to reach more distant fixing points.

Trees

If you decide to use a tree as a fixed point, it should be at least 250mm in diameter.

How To Set It Up?

Some possible combinations of fixing accessories

Connecting the sail shade
Connect fixing accessories to your mounting points as required.Ensure all accessories face towards the middle of the sail and are tightly secured.

Tensioning
To connect your sail shade you should first attach the adjustable fixings to the mounting points(ensuring they face the centre of the sail shade),and then attach the sail shade to these,using a strap temsioner to stretch the sail shade as tightly as possible,replacing this with a turnbuckle for final tensioning and adjustment.

Please browse our shade sail hardware selection below,

Important : at least two of the sail’s fixing accessories must be tensioning devises.

A rope or chain can be used extend you shade sail to a fixing point if required.Select the fixing accessories which best suit your own installation.

Trunbuckle : To attach shade sail corner ring to a fixing point and provide tension on the shade sail.

Manille : Use to link shade sail corner to pad eye or eye bolt.

Pad eye : To attach shade sail corner ring to a wall in conjunction with D shackle.

S hook : Use to link shade sail corner to pay eye or eye bolt.

Eye bolt : To attach shade sail corner ring through a thimber stud,steel pole or slid support.

Snap hook : Used to link shade sail corner to pad eye or tempcrary use.

Terminals : We offer a range of terminals that are safe, reliable, and do not require any specialised swaging or crimping tools.

Rigging screws : Rigging screws are designed to conceal the threads within the pipe for a better, more streamlined appearance to your shade sail rigging,designed to attach to a wide range of stainless steel fixtures and fittings, such as screw eyes and eye bolts.

Shade Sail Hardware Kit :

Triangle type set includes:2 x Turn Buckles,3 x Pad Eyes,3 x Carabiner,12 x Screws for fixing eye plates;
Square type set includes:2 x Turn Buckles,4 x Pad Eyes,2 x Carabiner,16 x Screws for fixing eye plates.

Si vous avez besoin d'aide pour déterminer l'assemblage à droite ou à la taille de votre application, e-mail nos spécialistes àsales@lg-lifting.com à l'aide. 🙂

NEVER EXCEED THE WORKING LOAD LIMIT

CMU
This is the term used throughout the catalog. There are, however. Other terms used in the industry which are interchangeable with the term Working Load Limit. These are: WLL, SWL, Safe Working Load, Rated Load Value, Resulting Safe Working Load, and Rated Capacity.

Never exceed the Working Load Limit.

The Working Load Limit is the maximum load which should ever be applied to a product, even when the product is new and when the load is uniformly applied – straight line pull only. Avoid side loading. All catalog ratings are based upon usual environmental conditions, and consideration must be given to unusual condition such as extreme high or low temperatures, chemical solutions or vapors, prolonged immersion in salt water, etc. Such conditions or high-risk applications may necessitate reducing the Working Load Limit.

Welding and Modifications Affect the Working Load Limit

Working Load Limit will not apply if product has been welded or otherwise modified. It should also be noted that it is the ultimate responsibility of the end user to determine a Working Load Limit for each application.

Components Working Load Limits Must Match.

Make certain that components such as hooks, links or shackles, etc. used with wire rope (or chain or cordage) are of suitable material size and strength to provide adequate safety protection. Attachments must be properly installed and must have a Working Load Limit at least equal to the product with which they are used. Remember: Any chain is only as strong as its weakest link.

Raised load.

All employees working with cranes or hoists or assisting in hooking or arranging a load should be instructed to keep out from under the load. From a safety standpoint, one factor is paramount: Conduct all lifting operations in such a manner, that if there were an equipment failure, no personnel would be injured. This means keep out from under a raised load and keep out of the line of force of any load.

Shock Loads.

Avoid impacting, jerking or swinging of load as the Working Load Limit could be exceeded and the Working Load Limit will not apply. A shock load is generally significantly greater than the static load. Avoid shock loads.

Inspect product regularly.

No product can keep operating at its rated capacity indefinitely. Periodic inspections help determine when to replace a product and reduce rigging hazards. Check for visible damage, cracks, wear, elongation, rust, etc. When in doubt about the extent of the damage, retire the item in question immediately.

Such breaks can cause loads to fail or swing out of control, possibly resulting in serious injury or death as well as major property damage.

Therefore:

 ➡ Never exceed the Working Load Limit (WLL).

 ➡ Match components properly.

 ➡ Keep out from under a raised load.

 ➡ Avoid shock loads.

 ➡ Inspect products regularly.

Clips corde fil Guide d'installation

Wire rope clips are widely used for making end terminations. Clips are available in two basic designs; the U-Bolt and fist grip. The efficiency of both types is the same.
When using U-Bolt clips, extreme care must be exercised to make certain that they are attached correctly; Incorrect installation can reduce the working load limit by 40%. Below are general guidelines for installing wire rope clips.

First, wire rope clips should be inspected before use to ensure that:

• all markings are legible;
• the wire rope clip is free from nicks, gouges and cracks;
• a wire rope clip with the correct dimension has been selected;
• never repair or reshape a wire rope clip by welding, heating or bending as this may affect the performance.

And then, The following is based on the use of proper size U-Bolt clips on new rope.

Step 1. Turn back specified amount of rope from thimble or loop. The first clip must be placed one bridge width from the turned back rope tail or dead end of the rope, Apply U-Bolt over dead end of wire rope – live end rests in saddle (Never saddle a dead horse!) Tighten nuts evenly, alternate from one nut to the other until reaching the recommended torque.

Step 2. When more than two clips are required, apply the second clip as near the loop or thimble as possible, tighten the nuts firmly but not yet to the specified torque.

Step 3. When three or more clips are required, space additional clips equally between first two – take up rope slack – tighten nuts on each U-Bolt evenly, alternating from one nut to the other until reaching recommended torque.

Step 4. Apply first load to test the assembly. This load should be of equal or greater – weight than loads expected in use. Next, check and retighten nuts to recommended torque.

In accordance with good rigging and maintenance practices, the wire rope end termination should be inspected periodically for wear, abuse, and general adequacy. Periodically re-tightening of the nuts must be done at 10.000 cycles (heavy usage), 20.000 e.g. every 3 months, 6 months, annually.

Also, the tightening and retightening of the nuts must be accomplished as required.
Use only forged clips for critical, heavy duty, overhead loads, such as support lines, guy lines, towing lines, tie downs, scaffolds, etc.
Malleable clips are to be used for making eye termination assemblies only with right regular lay wire rope and only for light duty uses with small applied loads, such as hand rails, fencing, guard rails, etc.

Chine LG Supply vous fournir de haute qualité wire rope clips, in a range of sizes and designs, according to your needs and desires.

e.g. malleable wire rope clip din741,forged wire rope clips g-450, stainless steel Wire rope clips.