Welcome

Welcome to our new website which has been carefully developed to assist you finding the solution to your connection requirement.

New features include the Girder Clamp Configurator, Hollo-Bolt Selector and BIM-compatible CAD files. As the website has been completely rebuilt, users of our old website will need to re-register to access these great features. We apologise for any inconvenience and hope you are pleased with the improvements this new website presents.

We value your feedback and please share your comments or suggestions by emailing marketing@lindapter.com

Girder Clamps FAQs

Can location plates be made to any dimensions?

Are Lindapter assemblies reusable?

Do tail length and packing combination calculations have to be exact?

Is it possible to use Lindapter products with proprietary concrete anchors?

Will clamps damage my steel surface coating?

Can Lindapter connections be used in a combined tension and friction / slip resistance load?

Why do location and end plates have to be made to a certain minimum thickness?

Are Lindapter assemblies affected by vibration?

Can Lindapter Type F9 be used to connect beams together?

Can Lindapter assemblies be used as permanent connections or are they only for temporary use?

How long will Lindapter assemblies last in an exterior environment?

Why is there such a high Factor of Safety, typically 5:1, on Lindapter connections?

Do I need to use a torque wrench when assembling a Lindapter connection?

Is it possible to use Lindapter products either sub-sea or within the splash zone?

What should be considered when connecting a pre-drilled section to an existing beam?

Is it possible to use stainless steel fasteners with Lindapter products?

Why is the frictional Factor of Safety on Lindapter Type AF only 2:1 and not 5:1 as it is on the tensile Safe Working Loads?

Can I use Lindapter clamps in slotted hole connections?

What is the recommended Lindapter safe working temperature range?

Can location plates be made to any dimensions?

No. Details of the minimum sizes are shown in the catalog or on the website.

Are Lindapter assemblies reusable?

It is not advisable. The load bearing capabilities cannot be guaranteed because they may have been over tightened and therefore overstressed.

Do tail length and packing combination calculations have to be exact?

The tables within the catalogue or on the website should be used for guidance on tail lengths and packing combinations; there is a tolerance which varies depending on the bolt diameter.

Is it possible to use Lindapter products with proprietary concrete anchors?

Yes, but it may be necessary to reduce Lindapter’s recommended bolt tightening torque to comply with the anchor bolt manufacturers figures; if so, this is likely to affect the connection capacity.

Will clamps damage my steel surface coating?

The material from which Lindapter clamps are manufactured should not damage the structure although removal marks might be visible on some surface coatings.

Can Lindapter connections be used in a combined tension and friction / slip resistance load?

Yes, although calculations are needed to determine the best size and Lindapter product to use.

Why do location and end plates have to be made to a certain minimum thickness?

As well as positioning all the components, the location plate supports the tail of the clamp.

On girder clamp assemblies the plate does not have to be as thick as it does for end plates; the reason for this is that the tail of the clamp on the bottom beam is trying to bend the plate but this is counteracted by the clamp’s tail on the top beam.

With end plates there is no counteracting clamp, hence the plate needs to be thicker to support the tail. Plate thicknesses may be able to be reduced by using higher grade/strength material.

Are Lindapter assemblies affected by vibration?

Although tested and approved for situations where they will be subject to vibration conditions, we would recommend that, in circumstances where this could be extreme, a proprietary locking device / anti-vibration washer can be used.

Can Lindapter Type F9 be used to connect beams together?

It is possible if the beams are running parallel to each other but they must be of the same type and width although a Lindapter Girder Clamp is a much better option; the Type F9 must never be used to connect beams together which are crossing at 90º to each other or have tapered flanges.

Can Lindapter assemblies be used as permanent connections or are they only for temporary use?

They can be used in temporary and permanent applications. The company has details of applications that have been installed for 40 years or more.

How long will Lindapter assemblies last in an exterior environment?

The best coating would be Hot Dip Galvanizing. Longevity would depend on the background corrosion rate evident in the location it is intended they be used; guidance should be sought from the galvanizers association of the relevant country.

Why is there such a high Factor of Safety, typically 5:1, on Lindapter connections?

This recommended Factor of Safety is to ensure that the components are subject to loads well within their capacity range in normal working condition but in event of an unintentional overload of the component / assembly there is sufficient strength within the clamps to avoid damage and / or failure of the connection. A lower FOS must not be used without first seeking advice.

Do I need to use a torque wrench when assembling a Lindapter connection?

Yes, we always recommend the use of a calibrated torque wrench. It is important to tighten up the fasteners to our published torque figures to ensure it replicates test conditions so that the Safe Working Loads can be achieved.

Is it possible to use Lindapter products either sub-sea or within the splash zone?

Yes, although consideration has to be given to the proposed material or coating used; splash zones can be more aggressive than total submersion.

What should be considered when connecting a pre-drilled section to an existing beam?

Make sure the section is thick enough to counter the reaction from the tail of the clamp.

Is it possible to use stainless steel fasteners with Lindapter products?

It is not recommended as it is likely to create a mechanism for the onset of bi-metallic corrosion.

They can however be used with the Lindapter Type LS which is manufactured in stainless steel.

Why is the frictional Factor of Safety on Lindapter Type AF only 2:1 and not 5:1 as it is on the tensile Safe Working Loads?

The published safe working load and 2:1 factor of safety is a recognized method of determining slip and is defined according to the Eurocode as the load corresponding to 0.1mm of movement.

As the safe working load is based on movement of 0.1mm it is acceptable to use a reduced factor of safety of 2:1.

Can I use Lindapter clamps in slotted hole connections?

Yes, but it is important that the slot is ‘bridged’ to ensure that the tail of the clamp does not fit into it. This can be done by using a product with a full width tail such as Types AAF, AF, LR or LS.

For additional guidance on slotted holes please refer to AISC 360 Section J3.

What is the recommended Lindapter safe working temperature range?

As a general rule -22ºF to +662ºF; however, this can increase or decrease in certain situations. For example, Type AAF clamp is tested to -76ºF. Surface coating may reduce the temperature range.

Get in touch with our technical support team

If you have any files that complement your technical request please attach them.

Faster to Install

No drilling or welding!

Independently Approved

Reasons to choose Lindapter

  • Save time and money

    Save time and money

    Clamping two steel sections together avoids time-consuming welding or conventional drilling and bolting.

  • Safer connections

    Safer connections

    Drilling and welding in the field is avoided, removing the need for hot work permits and encouraging safer site conditions.

  • High strength

    High strength

    Lindapter clamps are manufactured from high strength materials to resist high load requirements and harsh environments.

  • Industry leading approvals

    Industry leading approvals

    Lindapter has earned a reputation synonymous with safety and reliability, gaining multiple independent approvals.

  • Adjustable

    Adjustable

    Quickly align steel sections by sliding the section into the correct position before tightening the Girder Clamp to complete the installation.

  • Free connection detailing

    Free connection detailing

    Lindapter’s experienced Engineers can detail a custom connection based on your specific requirements free of charge.

You must have a Lindapter account to access this content