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Type AF High Slip Resistance Girder Clamp

ICC-ES approved, heavy duty girder clamp used to quickly connect steel beams with flat or tapered flanges. High slip resistance for tensile, frictional and combined load applications.

View technical specification Girder Clamp Configurator

Overview

The Type AF girder clamp is the world’s first and only structural steel clamping system that is approved by ICC-ES for use in all Seismic Design Categories (A through F) and compliant with the International Building Code. The Type AF girder clamp is used to achieve a fast steel-to-steel connection where high load capacities are present in either tensile, frictional or combined load directions. It has a recessed top to hold the bolt head captive while the nut and washer are tightened down using only one tool, alternatively use a Type AFW washer to convert the recess to a flat top. The skirt on the underside of the clamp abuts the edge of the beam flange and prevents the clamp rotating during installation. Manufactured from SG iron with a hot dip galvanized finish to provide high performance and anti-corrosion protection.

Features & Benefits

  • High slip resistance for tensile, frictional and combined load applications.
  • 15,736lbs static slip resistance or 56,200lbs tensile (4 x A490 bolt configuration, size 1").
  • Recess holds the bolt head captive (Grd. 5 bolts, sizes 12" - 34").
  • Suitable for parallel and tapered flanges up to 10°.
  • The tail spans slotted clearance holes.
  • Lindapter recommends the use of DTI Washers when using A325 or A490 structural bolts with Type AF.

Approvals

Click on an approval logo to download the certificate or report.

Tail Lengths & Packing Pieces

The clamp is available in two tail lengths, Short or Medium, and can be used with Lindapter packing pieces to increase the clamping range. Choose the correct combination of tail length and packing pieces to suit a specific flange thickness. Download datasheet for selection table.

Location & End Plates

Location plates are required when securing two sections together with clamps attached to the upper and lower sections with both clamps directly opposing each other. The plate is positioned between the two sections to hold the bolts at the correct centers and should be fabricated to the dimensions shown in the datasheet.

End Plates should be used when clamps are attached to the supporting section only. The End Plate holds the bolts at the correct centers and should be fabricated to the dimensions shown in the datasheet.

Properties

  • Manufactured from SG iron to BS EN 1563.
  • Available with hot dip galvanized finish.
  • Reaction to fire: A1 (Steel)

Durability and corrosion protection:

Corrosivity Class Galvanized Steel
C1 More than 50 years
C2 More than 50 years
C3 More than 20 years

For C4 and C5 corrosion categories contact us.

Technical Specification

Bolt Safe Working Loads Dimensions
Product Code Size Z Property Class4) Tensile / 1 Bolt (FOS 5:1) Slip1) / 2 Bolts (FOS 2:1) Tightening Torque* Tail Length Y X T T Width
Painted Steelwork2) Galvanised Steelwork short v1 medium v2 Type AF Type AF with AFW
kN kN kN Nm mm mm mm mm mm mm mm
LAF050 M12 8.8 8.5 3.4 3.9 90 5 12.5 27 27 17 22 39
LAF062 M16 8.8 16.0 8.0 10.0 240 8 15 35 37 22 27 49
LAF075 M20 8.8 26.3 13.0 16.0 470 10 18 40 39 25 31 56
LAF100 M24 8.8 40.0 24.0 30.0 800 15 30 48 60 32 42 82
LAF050 M12 10.9 10.0 4.0 5.2 130 5 12.5 27 27 17 22 39
LAF062 M16 10.9 19.5 11.0 12.0 300 8 15 35 37 22 27 49
LAF075 M20 10.9 30.0 20.0 25.0 647 10 18 40 39 25 31 56
LAF100 M24 10.9 62.53) 28.0 35.0 1000 15 30 48 60 32 42 82

1) Slip resistant values calculated against movement exceeding 0.1mm.

2) Shot blast and painted steelwork.

3) 3.2:1 Factor of Safety.

4) For ease of installation when using 10.9 bolts Lindapter recommends using fastener assemblies to EN 14399-1.

* Torque figures based on bolts / setscrews in an unlubricated condition.

  For Characteristic Resistances when designing a connection to Eurocode 3, please refer to DoP No.004

Bolt Safe Working Loads Dimensions
Product Code Size Z Grade Tensile Resistance / 1 Bolt (FOS 5:1) Slip Resistance1) / 2 Bolts (FOS 2:1) Tightening Torque* Tail Length4) Y X T Width
Painted Steel2) Galvanized Steel short v1 medium v2 AF AF + AFW
lbs lbs lbs ft lb
LAF050 12" Gr. 5 / A325 1911 764 877 66 316" 12" 1 18" 1 116" 1116" 78" 1 916"
LAF062 58" Gr. 5 / A325 3597 1798 2248 177 516" 916" 138" 112" 78" 1116" 11516"
LAF075 34" Gr. 5 / A325 5901 2922 3597 347 38" 1116" 1916" 1916" 1" 114" 2316"
LAF100 1" Gr. 5 / A325 8892 5395 6774 590 916" 118" 178" 238" 114" 158" 314"
LAF050 12" A490 2248 899 1169 96 316" 12" 118" 1116" 1116" 78" 1916"
LAF062 58" A490 4383 2473 2698 221 516" 916" 138" 112" 78" 1116" 11516"
LAF075 34" A490 6744 4496 5620 477 38" 1116" 1916" 1916" 1" 114" 2316"
LAF100 1" A490 140503) 6295 7868 737 916" 118" 178" 238" 114" 158" 314"

1) Slip resistant values calculated against movement exceeding 0.004" / 0.1mm.

2) Shot blast and painted steel.

3) 3.2:1 Factor of Safety.

4) Packing pieces are available to increase the clamping range.

* Torque figures based on fasteners in an unlubricated condition.

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.

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