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Assembly Selector

Update Regarding Covid-19

Continued Support from Lindapter These are unprecedented times and the Covid-19 pandemic is perhaps the most serious occurrence in a...
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New Catalog

The new comprehensive guide for designing steel connections, features ICC-ES approved solutions to benefit your next project.30 March 2020Lindapter...
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ICC-ES Approved Girder Clamps

Lindapter’s Girder Clamp is the world’s first and only structural steel clamping system that is approved by ICC-ES and compliant with the...
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FAQ's

Materials, Finish & Coatings
Location Plates
Installation
Recycle/Re-use
Packings
Beam Thickness
Concrete
Hollo-Bolt
Frictional Capacity
Testing/safe working loads
Composite Decking Profiles
Temporary or Permanent Solution
Environment


Material, Finish & Coatings

Q From what material are Lindapters manufactured?
A It depends on the product but its likely to be either Malleable Iron to BS EN 1562:1997 (Blackheart grade EN-GJMB-350-10 or Whiteheart grade EN-GJMW-400-5) or SG Iron to BS EN 1563:1997 (Grade 600/3)

Q Will using Lindapters cause damage to the surface coating of my steelwork?
A The material from which Lindapters are manufactured should not damage the structure although on removal marks could be in evidence on some surface coatings

Q Is it possible to use stainless steel fasteners with Lindapter products?
A It is not recommended as it is likely to create a mechanism for the onset of bimetallic corrosion

Location Plates

Q Why do you need a location plate in a Lindapter Girder Clamp assembly?
A The location plate is an essential part of a girder clamp assembly; it correctly positions all the components to enable the safe working load to be carried

Q Can the location plate be made to any dimensions?
A No details of the minimum sizes are shown in the catalogue and on the web site (www.lindapter.com)

Q Why do location plates and endplates have to be made a certain minimum thickness?
A As well as positioning all the components the location plate supports the tail of the Lindapter. On girder clamp assemblies the plate does not have to be as thick as it does for endplates; the reason for this is that the Lindapter tail on the bottom beam is trying to bend the plate but this is counteracted by the Lindapter tail on the top beam. With endplates there is no counteracting Lindapter hence the plate needs to be thicker to support the Lindapter tail. Plate thicknesses may be able to be reduced by using higher grade/strength material

Q Why do location plates have to be larger when using types LR, D2 & D3 Lindapters as well as type AF?
A These Lindapters are longer than the type A & B Lindapters and therefore require longer plates to support the tails

Installation

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

Recycle/Re-use

Q Are Lindapter assemblies reusable?
A It is not advisable. The load bearing capabilities cannot be guaranteed because they may have been over tightened and therefore overstressed

Q Can a Hollo-Bolt be reused?
A No, although a new Hollo-Bolt can be inserted in the existing hole

Q Can a Hollo-Bolt be removed?
A Yes; instructions for removal are as follows and are different for the 2 styles, 3 part & 5 part, of Hollo-Bolt M8, M10 & M12 (3 part Hollo-Bolt)
Using a Pneumatic Tool to Remove the Hollo-Bolts:
1. Set the pneumatic hand tool to reverse mode – anticlockwise rotation.
2. Place a suitable size wrench (depending on collar size) on the flats of the collar to hold in place.
3. Use the pneumatic hand tool to loosen the bolt.
4. Continue in reverse mode until the cone on the inside of the RHS at the other end of the bolt is released to drop inside the RHS.
5. The bolt can now be removed as can the sleeve by prying the collar with a pinch or crow bar.

M16 & M20 (5 part Hollo-Bolt)
Using a Pneumatic Tool to Remove the Hollo-Bolts:
1. Set the pneumatic hand tool to reverse mode – anticlockwise rotation.
2. Place a suitable size wrench (depending on collar size) on the flats of the collar to hold in place.
3. Use the pneumatic hand tool to loosen the bolt.
4. Continue in reverse mode until the cone, expanded sleeve, and rubber washer on the inside of the RHS, at the other end of the bolt are released to drop inside the RHS.
5. The bolt and the loose collar can now be removed.

Hand tools can also be used to un-tighten the bolt
This method can also be used to remove the countersunk head version of the Hollo-Bolt (HBCSK); the Flush Fit Hollo-Bolt (HBFF) cannot be removed once installed.

Packings

Q Is there a tolerance when working out tail length & packing combinations?
A The tables within the catalogue or on the web site should be used for guidance on tail lengths and packing combinations

Q Why is there no M24 type AFCW?
A Each tail length of the Type AF Lindapter is able to be used for a wider range of flange thicknesses than the Types A & B therefore there is no need for a 2mm thick packing with the M24 type AF

Beam Thickness & Flange Types

Q Can Lindapters be used on beams with a parallel flange?
A Yes; although some Lindapters have a nose which slopes at 4º they can safely be used on beams with parallel flanges

Q Can Types FL & FLS Lindapters be used on beams with sloping flanges?
A Yes but only those with a slope of 4º or less

Q Can Type F9 Lindapter be used on beams with sloping flanges?
A No they must only be used on beams with parallel flanges

Q Can Floorfast be used on beams with a flange thicker than the 1/2" shown in the catalogue and on the web site?
A Yes, by using a longer screw and short ferrule; for details contact Lindapter Sales Department on support@lindapter.com

Q Is it necessary to use type T when using types A or B Lindapters on beams with a parallel flange?
A No this is just an aesthetic piece and has no bearing on load carrying capacity; if used an allowance will have to be made when choosing the tail length and packing combination to be used

Q Is it possible to use Type F3 Lindapter on beams thicker than those shown in the catalogue & on the web site?
A Yes by using two Type F3 Double Legs together on the same bolt; for details contact Lindapter Technical Sales & Support Department on support@lindapter.com

Q I need to use Lindapters on several different beam sizes all of which have different thicknesses of flange; which Lindapter product do you recommend I use?
A Try the Type LR which has a wide range of adjustment and can be used with packings to accommodate most beam flange thicknesses

Q Can a Type SC assembly be used on a sloping/inclined beam?
A No, always use a Type LP4 or LP6

Q Can Type F9 Lindapters be used to connect beams together?
A 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; they must never be used to connect beams together which are crossing at 90º to each other
 
Slotted holes
Q Is it possible to use Lindapter fixings in connections with slotted holes?
A Yes but it is important that the slot is ‘bridged’ to ensure that the Lindapter tail does not fit into it; this can be done by using either a Lindapter with a full width tail such as a Type LR or alternatively Type A or B Lindapter with one of the standard range of packings (CW, P1 or P2S)

Concrete

Q Can the Hollo-Bolt be used in concrete?
A No; it is designed as an expansion bolt for SHS of all shapes and sizes or for where access is available from one side only

Q Is it possible to use Lindapters with proprietary concrete anchors?
A Yes but it may be necessary to reduce the recommended Lindapter bolt tightening torque to comply with the anchor bolt manufacturers figures; if so, this is likely to effect the Lindapter connections capacity

Product – Hollo-Bolt


Q Why is there a minimum outer ply requirement when using M16 & M20 Hollo-Bolts?
A To ensure that the patented rubber washer collapse mechanism does not compromise the shear capacity of the Hollo-Bolt

Q I want to use the Hollo-Bolt in a section of SHS not shown in the catalogue or on the web site is it possible?
A The table within the catalogue and on the web site is for comparison guidance regards the Hollo-Bolt capacity only; it shows that changes in both the size of SHS and wall thickness can have an effect on the strength of a connection
Q Is it possible to use slotted holes in connections with the Hollo-Bolt?
A Yes as long as the slot is in the outer ply only and is perpendicular to any shear load

Q Can the Hollo-Bolt be used in all shapes and sizes of SHS?
A Yes it can be used with square, rectangular, circular or oval sections with all wall thicknesses as long as they are within the Hollo-Bolt clamping thickness range

Frictional capacity

Q Will using the type BSLN Lindapter increase the frictional capacity of a connection?
A No, for connections where there is a significant friction load always use the Type AF Lindapter

Testing/safe working loads

Q Are Lindapter assemblies affected by vibration?
A 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 such as a Nord-Lock washer (www.nord-lock.com) be used

Q Why are safe working loads of Types Z10, HCW30 & HCW31 relatively low?
A These capacities have all been set by the purlin manufacturers and are the maximums they will allow

Q Why is there such a high Factor of Safety, typically 5:1, on Lindapter steelwork connections?
A This is intended to ensure that under even the most extreme circumstances, when advice from the catalogue or website is not followed, Lindapters will not fail in service; a lower Factor of Safety must not be used.

Q Why is the frictional Factor of Safety on Type AF Lindapters only 2:1 and not 5:1 as it is on the tensile Safe Working Loads?
A The actual Factor of Safety on frictional Safe Working Loads is 2:1 and is based on 0.1 mm of movement as defined in BS 4603 P+1.

Composite Decking Profiles

Q Will the composite decking fixings suit other profiles?
A No they have all been designed in conjunction with the composite decking manufacturer to ensure an ideal fit with the composite decking profile; it is important to use the correct fixing with the profile it has been designed for. Use the decking fixings guide in the catalogue and on the website

Temporary or Permanent Solution

Q Can Lindapter assemblies be used as permanent connections or are they only intended for temporary use?
A They can be used in both temporary and permanent applications. We have details of many application that have been in situ for 40 years or more

Environment

Q How long will Lindapter assemblies last in an exterior environment?
A The best coating would be Hot Dip Galvanising but longevity would depend on the background corrosion rate evident in the location it is intended they be used; guidance should be sought from the galvanisers association of the relevant country

Q Is it possible to use Lindapter assemblies in the chlorine laden atmosphere of a swimming pool?
A Yes; the recommended coating is Hot Dip Galvanised. If stainless steel items are intended to be used great care should be taken due to the potential for the onset of stress corrosion cracking


CAD Files

Q Is it possible to get CAD files of Lindapter products?
A Yes, they can be downloaded from the Lindapter website from under the Resources heading: http://www.lindapterusa-resources.com/

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