SCAFFOLDING COUPLERS WORKING LOAD CAPACITY

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SCAFFOLDING CLAMP LOAD CAPACITY

Scaffold couplers are essentially the fundamental component that is used to assemble tube-and-coupler scaffolding. Tube-and-coupler scaffolding is defined as ‘a scaffold in which individual circular tubes serving as standards, braces or ties are joined together by means of purpose designed couplers’.
This basic fitting that is designed to join two scaffold tubes can be used to create a diverse range of scaffolding structures or used as an accessory to prefabricated scaffolding systems. This manual includes basic types of scaffold couplers which join two tubes together as well as special couplers used to connect scaffold tube to other components, equipment or structures. scaffolding clamp load capacity

DOUBLE COUPLER LOAD CAPACITY:-

scaffolding clamp capecity


    • Joins two scaffold tubes having outside diameter of 48.3mm at right angles.
    • Tightening nuts suit standard Scaffold Spanner (23mm A/F).
    • Replaceable ‘T’ bolts, nuts and washers.
    • Robust design made from drop forged steel or Pressed Steel for durability and reliability.
    • Hot dip galvanized finish for corrosion resistance.
    • Typical working load limit of 6.25kN (637.32 KGF) against slip at tightening torque of 54 Nm.
    • Can be used to resist tension or compression loads.

    SWIVEL COUPLER LOAD CAPACITY:-

    • Joins scaffold tube having outside diameter of 48.3mm at any angle.
    • Each half of the Coupler is interconnected with a swivel pin.
    • Typically used for connecting bracing members. Also used for tension splicing of scaffold tubes.
    • Tightening nuts suit standard Scaffold Spanner (23mm A/F).
    • Replaceable ‘T’ bolts, nuts and washers.
    • Robust design made from drop forged steel or Pressed Steel for durability and reliability.
    • Hot dip galvanized finish for corrosion resistance.
    • WLL = 6.25 kN (637.32 KGF) against slip at tightening torque of 54 Nm.
    • Can be used to resist tension or compression loads in bracing.

    EXPENDING JOINT PINLOAD CAPACITY:-

    • Joins 48 O.D. scaffold tube standards end to end internally.
    • Fits inside scaffold tubes.
    • Expands to ft internal diameter of scaffold tube when bolt tightened.
    • Tightening bolt suits standard Scaffold Spanner (23mm A/F).
    • Made from forged steel.
    • Hot dip galvanized finish.
    • Under compression loading this Joint Pin is capable of taking the full capacity of the scaffold tube.
    • Not to be used for tension loads. Under tension loading, it is necessary to splice the joint with another scaffold tube and Swivel Couplers (tension load check required).
    • This Joint Pin must only be used to join scaffold tube with the same internal diameter,  the same wall thickness.

    EXTERNAL SWIVEL COUPLER LOAD CAPACITY:-

    • Joins 48 O.D. scaffold tubes end to end externally.
    • Used for end to end joining of scaffold tube standards.
    • Locates on outside diameter of scaffold tube members.
    • Tightening bolt suits standard Scaffold Spanner.
    • Made from high quality pressed steel.
    • Hot dip galvanized finish.
    • Under compression loading this Coupler is capable of taking the full capacity of the scaffold tube.
    • Not to be used for tension loads. Under tension loading, it is necessary to splice the joint with another scaffold tube and Swivel Couplers (tension load check required).
    • This Coupler must only be used to join scaffold tube with the same external diameter.

    BOARD CLAMP LOAD CAPACITY:-




    • Retains timber scaffold planks to 48 O.D. putlog/ transom tubes.
    • Suitable for plank thickness range of 35 to 38mm.

    PUTLOG COUPLER LOAD CAPACITY:-

    • Joins 48 O.D. scaffold tubes at right angles.
    • Used for fixing put log tubes onto ledger tubes.
    • Tightening nut suits standard Scaffold Spanner (23mm A/F).
    • Replaceable ‘T’ bolt, nut and washer.
    • Pressed steel faps and drop forged steel cap.
    • Hot dip galvanized finish for corrosion resistance.
    • Typically used for securing guardrails and midrails at right angles to standards. Other uses can distort the coupler so that tube retention is not effective and WLL does not apply.
    • Not to be used for connecting put log tubes to ledger tube in tube-and-coupler scaffolding.
    • Only use Right Angle Couplers for this purpose.
    • WLL = 0.62 kN (63.2224 KGF) against slip of tube through faps of coupler at tightening torque of 54 Nm.

    BEAM CLAMP LOAD CAPACITY

    load capacity of beam clamp

    • Material – Steel
    • Size/Capacity – 20 lbs/ft (9.07185 Kg/ft)
    • Uniform Load Rating – 6250 lbs (2834.952 kg)
    • Slip Rating – 4900 lbs (2222.603 Kg)

    How to calculate scaffolding load capacity:

    Scaffolding classes, duties, and dimensions

    Types of scaffolding load

    • Dead load
    • Live load
    • Static load
    • Dynamic load
    • Wind load
    • Environmental load

    How to calculate DEAD load of scaffolding

    Example of Dead load calculation of scaffolding

    Scaffolding Pipe/tube weight 4.5 kg per meter as per BS EN 39:2001

    1×3m standard = 14 kg.

    1× Screw jack = 05 kg.

    4× Ledgers 40 kg ÷  2 = 20 kg.

    4× Transoms =32 kg ÷ 2 = 16 kg.

    1× Face brace = 18 kg ÷ 2 =9 kg.

    1× End brace = 10 kg ÷ 2 = 5 kg

    5× 2.4m planks = 100 kg ÷ 4 = 25 kg

    TOTAL = 94 kg. (Dead load)

    How to calculate Live load of scaffolding

    Light duty ScaffoldMedium duty ScaffoldHeavy-duty Scaffold
    225 kg/m2450kg/m2675 kg/m2

    Live load = Workers weight × tools weight × materials weight.

    SWL (safe workload of scaffolding)= D + (4 × L)

    D= Dead load

    L= Live load

    Scaffolding bag weight capacity

    Scaffolding bag used for scaffolding materials lifting, ground to elevation. Mostly scaffolding bag made from canvas, it is very useful to lifting scaffolding components and scaffolding spanner. The capacity of scaffolding bag- (SWL of Scaffolding Bag) – 30 Kg to 50 Kg. subject to scaffolding bag physical condition.

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    Saurabh Ranjan is Founder of rlshumancare.com. I have dedicated & committed to publishing some innovative content and useful topics regarding Health, Safety & Environment, which will help and awareness to people for daily life. Also trying to continually improve my content for better awareness and suit to dedicated people.
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    15 COMMENTS

    1. thanks for the valuable and important information on safety topics and i want the information about the procedure of the accident investigation. kindly provide this information for me.
      regards,
      prakash Raju

      • Bay lanth ke hisab se load calculation kiya jata hai scaffolding Related koi bat puchna hai to call kijye 9661533447 pramod kumar Mishra

    2. I appreciate for the valuable information shared its really great and worth information. Thanks a lot and hope we get more valuable informations further.

    3. Thanks for this information this was really very use full for as very nice clarification and the load calculation

      Thank you so much

    4. Could you please share according to which IS Code you have mentioned these formula and the load capacities. I need it for the purpose of reference.

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