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Ringlock Instructions

Aug 06, 2019

Ringlock Instructions

The load capacities listed for the EGT Ring System scaffold system are based on the results of Engineering calculations, FEM analysis and extensive testing in Europe and in the United States by independent testing authorities.

 

All laboratory testing was carried out in consultation with resident engineers in order to that the results were obtained in accordance with the test procedures outlined in European Standards EN12810 and 12811 and American OSHA regulations.

 

About BODYCOTE, LANCASTER

BODYCOTE Materials Engineering Lancaster Laboratory is one of Europe’s foremost fatigue and fracture toughness testing laboratories. The laboratory has a prestigious Europe-wide clientele within the forging sector, which supply aerospace, nuclear and power generation industries. Dealing with complex component sectioning in titanium and advanced aerospace alloys is a routine activity and the laboratory is widely approved by the major aerospace OEMs.

BODYCOTE LANCASTER is a UKAS accredited testing laboratory

 

About UKAS

The United Kingdom Accreditation Service UKAS, is the sole accreditation body recognized by government to assess, against internationally recognized standards, organizations that provide certification, testing, inspection and calibration services. Accreditation by UKAS demonstrates the competence, impartiality and sustainable performance of these evaluates.

 

EGT has implemented extensive quality control procedures at the factory to ensure that the results achieved and documented within this booklet remain reliable and consistent. 



Ledger/Standard Connection

Maximum Bending Moment

Ringlock Loading Test Report1615

Max. My = 60 kNcm      See EN 12811 Pt 3 for Procedure

Max.My = 73kNcm        See OSHA Testing Standards

Ringlock Loading Test Report1693



Maximum Normal Loading

Ringlock Loading Test Report1819

The normal load N is a tensile force or a compression force along the axis of a ledger/transom.

Max.N=19,4kN      See EN 12811 Pt 3 for Procedure

Max.N = 22 kN      See OSHA ANSI Test Standard

Ringlock Loading Test Report2133



Maximum Vertical Load

Ringlock Loading Test Report2136

The vertical load Vz is the supporting load for the transoms.

The maximum load for a single Ledger or transom was given to be:

Max.Vz=19,5kN      See EN 12811 Pt3 for Procedure

Max.Vz = 21kN      See OSHA Test Standards

The maximum allowable load on the complete rosette was given as:

ΣVz=54,90kN      See EN 12811 Pt3 for Procedure

ΣVz=64,00kN      See OSHA Test Standards

Ringlock Loading Test Report2396



Maximum Load in Diagonals

Ringlock Loading Test Report2686


The maximum tensile load in the diagonals Nv Was found to be:

Max.Nv = 1420 kN      See EN 12811 Pt3 for Procedure

Max.Nv= 14,20kN      See OSHA Test Standards

Ringlock Loading Test Report2818



Load Capacity of Ledgers

Ringlock Loading Test Report2963

123
456
LengthPerm qPerm Pm kN
DeckPerm.PScaffold
(kN/m)Length(kN/M2)Class
0.7524.29.1
37.85*




2.59.46




211.86




1.515.86







114.97.4
34.75




2.55.75




27.25




1.59.65







1.06126.4
31.72




2.52.13




22.73




1.53.84







23.43.4
30.81**




2.51.11**




21.52




1.523







2.52.22.7
20.81**




1.51.21**







31.52.3
1.50.81**

Table relates to EGT ringlock ledgers with EGT specified decks. Check capacity of decks of length 2.50 and over when not EGT specified. 

According to HD1000 Section 5 Para 5.2.1,”No Scaffold shall have a load bearing capacity lower than that specified for a class 2 scaffold.



Load Capacity Double Ledgers

Ringlock Loading Test Report3813

1234
567
LengthPerm qPerm PmPerm P3DeckPerm. PScaffold
(kN/m)(kN/m)(kN)Length(kN/m2)Class
1.519.911.211.236.35




2.57.76*




29.66




1.5136







214.5177.434.55




2.55.55




276




1.59.46







2.59.59.87.232.93




2.53.54




24.55




1.59.46







34.96.95.431.31**




2.51.71**




22.23




1.534

*Table relates to EGT Ringlock with EGT specified steel decks. Check the capacity of steel decks over

2.50m when other than EGT specified.

**According to HD1000, Section 5 Para 5.2.1 no scaffold shall have a load bearing capacity lower than

that specified for a class 2 scaffold.



Capacity of Steel Decks

Heavy Duty Steel Decks

Part Nr.LengthWeightCapacity20 x 20 cmScaffold
cmkgPer m2CapacityClass
HSB 075758600 kg100 kg6
HSB 10010010600 kg100 kg6
HSB 15015013.2600 kg100 kg6
HSB 20020016.8600 kg100 kg6
HSB 25025020600 kg100 kg6
HSB 30030023.3450 kg100 kg5

Lightweight Steel Deck

Part Nr.LengthWeightCapacity20 x 20 cmScaffold
cmkgPer m2CapacityClass
LSB 075756.6600 kg100 kg6
LSB 1001008.1600 kg100 kg6
LSB 15015010.8600 kg100 kg6
LSB 20020013.8600 kg100 kg6
LSB 25025016.4450 kg100 kg5
LSB 30030019300 kg100 kg4

Summary of Scaffold Classifications in Accordance with HD1000 (See also BS 1139: Part 5/DIN 4420 : Part 4).

Scaffold Class 2UDLConcentrated Load on 50 x 50 cmConcentrated Load on 20 x 20 cm
areaArea
2150 kg/m2150 kg100 kg
3200 kg/m2150 kg100 kg
4300 kg/m2300 kg100 kg
5450 kg/m2300 kg100 kg
6600 kg/m2300 kg100 kg

No platform shall have a capacity lower than that specified for class 2.



Scaffold Bracing Patterns

1. General Arrangement and Legend

Ringlock Loading Test Report5717

Key

               

          


Example 1 – Unsheeted, 2,50 or 3,00 bay length, closed facade, Scaffold Rating 4(3 for 3,00m bay length), first anchor at 4,00m, spindle length 26cm.

Ringlock Loading Test Report5929


Example 2 – Unsheeted, 2,50 or 3,00 bay length, closed façade, Scaffold Rating 4( 3 for 3,00m bay length), first anchor at 4,00m, spindle length 26 cm with side bracket.

Ringlock Loading Test Report6102


Example 3 – Unsheeeted, 2,50 or 3,00 bay length, open or closed façade, Scaffold Rating 4 (3 for 3,00m bay length), first anchor at 4,00 m, spindel length 26 cm.

Ringlock Loading Test Report6105


Example 4 – Sheeted, 2,50 or 3,00 bay length, closed façade, Scaffold Rating 4 (3 for 3,00m bay length), first anchor at 4,00 m, spindel length 26 cm.

Ringlock Loading Test Report6420


Example 5 – Sheeted, 2,50 or 3,00 bay length, open or closed façade, Scaffold Rating 4 (3 for 3,00m bay length), first anchor at 4,00m, spindel length 26cm, one board side bracket.

Ringlock Loading Test Report6604



EGT Ring System Leg Loading

Ringlock Loading Test Report6635

a) Standard at perimeter of structure 

b)Standard within perimeter of structure


Length of the longer ledger I[m]Compression capacity for standards at the perimeter of the scaffold h=2.0m[kN]Compression capacity for standards in the center of the scaffold h = 2.0m[kN]

Vertical Braces in every…Vertical braces in every…

Bay2nd Bay3rd BayBay2nd Bay3rd Bay
0.7440.720.413.640.820.413.6
139.838.125.448.538.125.4
1.0639.639.628.448.142.628.4
1.3938.746.946.942.6
1.538.546.9
238.244.9
2.536.543.3
335.842.2