Beamclamp® High Friction Components (Type BY + BYP) #BY1G16

Type BY clamp is designed for high friction and tensile applications which exceed the capacities of the standard BeamClamp products.

See specification charts

How It Works

How It Works

Type BY clamp has a recessed top that prevents the head of the bolt from rotating during installation, therefore requires only one wrench. Type BYP washer can be used to fill in the recess of Type BY, and provide a flat surface for a washer and nut. This also allows the Type BY structural clamps to be used together in beam to beam connections. The full width tail of Type BY allows for use with slotted holes for greater diversity in applications.

Features & Benefits

  • Hot Dip Galvanized to BS EN ISO 1461
  • Manufactured from Ductile Iron to BS EN 1563

Measurements & Specifications

BeamClamp High Friction Components Type BY & BYP
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Catalog page 22.
Tail LengthProduct CodeBolt GradeA
Bolt Dia.
BC
in.
D1D2EWidth in.Torque (ft lb)Tensile SWL (lbs) per bolt
(5:1 Factor of Safety)
Frictional SWL (lbs) per two bolts Painted Steel
(2:1 Factor of Safety)
Frictional SWL (lbs) per two bolts Galvanized Steel (2:1 Factor of Safety)
ShortBY1G12A325/Grd.51/21-1/161-1/81/215/163/161-9/16662,4231,1653,105
BY1G16A325/Grd.55/81-5/161-5/1611/161-3/165/161-15/161774,1452,0885,892
BY1G20A325/Grd.53/41-9/161-1/27/81-7/163/82-3/163467,0872,9746,362
BY1G12A4901/21-1/161-1/81/215/163/161-9/16952,7692,5363,876
BY1G16A4905/81-5/161-5/1611/161-3/165/161-15/162214,6583,6066,171
BY1G20A4903/41-9/161-1/27/81-7/163/82-3/164777,5245,6497,733
MediumBY2G12A325/Grd.51/21-1/161-1/81/215/161/21-9/16662,4231,1653,105
BY2G16A325/Grd.55/81-5/161-5/1611/161-3/169/161-15/161774,1452,0885,892
BY2G20A325/Grd.53/41-9/161-1/27/81-7/1611/162-3/163467,0872,9746,362
BY2G12A4901/21-1/161-1/81/215/161/21-9/16952,7692,5363,876
BY2G16A4905/81-5/161-5/1611/161-3/169/161-15/162214,6583,6066,171
BY2G20A4903/41-9/161-1/27/81-7/1611/162-3/164777,5245,6497,733

BeamClamp High Friction Components Type BY + BYP METRIC
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Tail LengthProduct CodeBolt GradeA Bolt DiameterBC in.D1D2EWidth in.Torque (ft lb)Tensile SWL (lbs) per bolt
(5:1 Factor of Safety)
Frictional SWL (kN) per two bolts Painted Steel (2:1 Factor of Safety)
ShortBY1G12A325/Grd.5M1226.98728.57512.723.8134.76239.68890114
BY1G16A325/Grd.5M1633.33733.33717.46230.1627.93849.212240178
BY1G20A325/Grd.5M2039.68838.122.22536.5129.52555.5634703012
BY1G12A490M1226.98728.57512.723.8134.76239.688130128
BY1G16A490M1633.33733.33717.46230.1627.93849.2123001916
BY1G20A490M2039.68838.122.22536.5129.52555.5636473224
MediumBY2G12A325/Grd.5M1226.98728.57512.723.81312.739.68890114
BY2G16A325/Grd.5M1633.33733.33717.46230.16214.28749.212240178
BY2G20A325/Grd.5M2039.68838.122.22536.51217.46255.5634703012
BY2G12A490M1226.98728.57512.723.81312.739.688130128
BY2G16A490M1633.33733.33717.46230.16214.28749.2123001916
BY2G20A490M2039.68838.122.22536.51217.46255.5636473224

Frequently Asked Questions

Why is Type BY Clamp capable of such high frictional loads?

Type BY clamp has larger sections than standard clamps which allows it to be tightened to higher torques. This increases the clamping force onto the steel and therefore increases the frictional slip capacity. Type BY can be used grade 5 or A325 bolts and for increased frictional capacity A490 bolts and apply a higher torque.

What is the Frictional failure mode?

Frictional failure mode is when the connection is measured to have moved 1mm or 0.039” from its original position. The safety factor of 2 to 1 is then applied to this load, therefore, the test load we publish is at half that of the point where the connection even moves 0.039”.

Can I use packing pieces with Type BY beam clamp?

Yes, BF3, BF4 and BH2 packing pieces are specifically designed for use with Type BY beam attachment.

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structural beam clamp connections during construction