EN Scaffold Access & working platforms - Free download as PDF File . pdf), Text File .txt) or read online for free. Scaffold Manual (Code of Practice). According to EN a scaffold should be designed for two also per- forms a coupler check as defined in EN Downloads. Home; BS EN Preview $; Add to Cart. Printed Edition + PDF; Immediate download; $; Add to Cart.
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BS EN Temporary works equipment. Scaffolds. Performance requirements and general design;. • BS EN Temporary works. download from BSI Download from CIS *. * A valid subscription to The Construction BS EN Temporary works equipment. Scaffolds - Performance. or SS-EN respectively, where an absolute mini- . 'Temporary works equipment - Part 1: Scaffolds -.
They also ease the setting up and assembly.
They are mainly manufactured in three different lengths that are: 3. Side Guard-Rail Are used at the end points of the scaffolding.
high performance frame scaffolding with bushes
Total length in horizontal projection is mm, height mm. Access Deck with Ladder Access decks with ladders are used by workers to access other levels of the scaffolding system, and to also discharge materials. They are produced from rectangular steel profiles of 40x60x2mm.
The trapdoor direction can be changed upon request. Their sizes are variable. The standard width is 60 cm, whilst their length can be 2. Step Stair Step stairs can be used by workers to access to another level within the scaffolding itself and to also discharge materials.
In the rosette modular scaffolding system, it has to be used next to a steel deck in order to access other levels. Minimum use for the stairs must be equal to three steel decks. It is able to cover dimensions between 3. Steel Deck Steel decks are used to assure the workers to walk inside the scaffolding.
They can be manufactured in the following lengths 0. All these types of decks can also be manufactured in different thicknesses as 1. Board Bracket Board brackets are used to create an additional working place in the spaces under cornices of buildings. Their width can be 0. Toe Board Is a panel located at foot height that is used to avoid materials and tools to fall off from decks. They are manufactured from steel plates with 1,50 mm thickness. Analysis The analysis of the scaffold includes proper defi- nition of loads and combinations, calculation and design in compliance with the scaffolding-related code.
Loading According to EN a scaffold should be designed for two specific conditions: In Service: characterized by a high working load and only a minor wind loading. Out of Service: characterized by an extreme wind loading and a small percentage of the working load. Templates save a lot of effort as they may have predefined all required load cases and combinations. Load Generators enable the user to define the loading plane and the program automatically distributes the loading on all members within that plane.
This is for example used for generation of wind loading on the scaffold. SCIA Engineer uses a stability analysis to determine the buckling shapes of the scaffold, which in turn are used as imperfections for the full second order analysis.
Other calculation features are used for handling of various specifics of scaffold structures: non-linear functions for coupler stiffness, friction supports for base jacks, pressure-only supports for abutments, gap elements for margins between the pen and hole, etc.
Design: limit states In the ultimate limit state, the scaffold members are checked according to the capacity check defined in EN In addition to the specific scaffolding checks, full design and check of the structure according to EN is also available for those scaffolds which do not meet the EN prerequisites.
Moreover, users can evaluate deformations of the scaffold and even perform a check on the relative deformations. This is particularly important for ledgers that support floor boards.
Scaffolding components SCIA Scaffolding allows for an accurate modelling of different scaffolding components including their appropriate specifics. Diagonals are typically attached with an eccentricity due to the geometry of the attachment between the standards and the diagonals. In addition to the eccentricity, a special behaviour of diagonals in modular systems is that they mostly have a small gap along their length, caused by a slight margin between the pen and hole.
If specific test results for the diagonals of modular systems are available, the stiffness derived from the tests is accounted for using a translation spring.
Transoms rest upon the ledgers at right angles. Main transoms are placed next to the standards, they hold the standards in place and provide support for boards; intermediate transoms are those placed between the main transoms to provide extra support for boards.
In Canada this style is referred to as "English".
Scaffolding in Tretyakovsky Proyezd , Moscow As well as the tubes at right angles there are cross braces to increase rigidity, these are placed diagonally from ledger to ledger, next to the standards to which they are fitted.
If the braces are fitted to the ledgers they are called ledger braces. Of the couplers previously mentioned, right-angle couplers join ledgers or transoms to standards, putlog or single couplers join board bearing transoms to ledgers - Non-board bearing transoms should be fixed using a right-angle coupler. Swivel couplers are to connect tubes at any other angle. The actual joints are staggered to avoid occurring at the same level in neighbouring standards. Basic scaffold dimensioning terms. No boards, bracing or couplers shown The spacings of the basic elements in the scaffold are fairly standard.
For a general purpose scaffold the maximum bay length is 2.
The scaffolding width is determined by the width of the boards, the minimum width allowed[ where? More heavy-duty scaffolding can require 5, 6 or even up to 8 boards width. Often an inside board is added to reduce the gap between the inner standard and the structure. The lift height, the spacing between ledgers, is 2 m, although the base lift can be up to 2.
Foundations[ edit ] Good foundations are essential. Often scaffold frameworks will require more than simple base plates to safely carry and spread the load.
European H Shape Frame Scaffolding
Scaffolding can be used without base plates on concrete or similar hard surfaces, although base plates are always recommended. For surfaces like pavements or tarmac base plates are necessary. For heavier duty scaffold much more substantial baulks set in concrete can be required. A working platform requires certain other elements to be safe. They must be close-boarded, have double guard rails and toe and stop boards.
Safe and secure access must also be provided. Scaffolding showing required protection of a working platform with maximum dimensions.
EN 12811-1 Scaffold Access & working platforms
Butt-board not visible. Scaffolds are only rarely independent structures. General practice is to attach a tie every 4 m on alternate lifts traditional scaffolding.
Prefabricated System scaffolds require structural connections at all frames - i. The ties are coupled to the scaffold as close to the junction of standard and ledger node point as possible.
Due to the different nature of structures there is a variety of different ties to take advantage of the opportunities.Castor is a swivelling wheel secured to the base of a vertical member for the purpose of mobilising the scaffold.
With one basic 24 pound unit a scaffold of various sizes and heights could be assembled easily by a couple of labourers without the nuts or bolts previously needed.
It also contains outline guidance on the erection of basic tube and fitting scaffolds. Where scaffold boards or guard-rails are missing, workers can suffer severe injuries due to falls. The characteristic values of the resistances for couplers are listed in Table A4 in Appendix A. The instruction and training that 26 Health and Safety Authority Code of Practice for Access and Working Scaffolds is required for safe use of the scaffolding should be identified by the contractor.
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