The values apply regardless of the type of formwork to be supported and where the maximum length of bay does not exceed 2. If ties are only connected to the inside horizontal or vertical, then plan braces should be put in at every tied level in the same bays as the face bracing.
The falsework structure must be 4 or more bays long in both directions. If braces are terminated within the structure the vertical component force must be added to all other vertical forces and the total must not exceed the loads stated. When floors are concreted in bays, braces should be positioned so that at least one brace occurs under each poured section. These are identified by a colour flash and four lug cups. Intermediate transoms cannot be used in trapezium bays and therefore the length of these shown in the following tables has been limited to cater for the allowable span of a 38mm scaffold board.
If exposed to high winds, stability scaffodling must be made. As it is very kanual to calculate exact setting levels for the forkheads, it will probably be necessary to re-level the support jacks, whilst checking the required levels at the form face. Care should be taken to see that the support bar is in full line contact with the underside of the forkhead. The rules for bracing must be observed scsffolding see page Relevancy Transaction Level Response Rate.
It is not always possible to have inside horizontals, outside ledgers and transoms at the same level. The maximum distance of a cuploock to the nearest node point must not exceed mm.
A trial spacing of verticals has to be established after assessing the intensity of the load to be supported and the type of formwork in use. Guidance note For this heavier duty and in particular cuplocj new equipment is supplied it will greatly assist in the striking of the falsework if the top screw jacks are lubricated.
The bracing adaptor allows lacing with Cuplok horizontals. Cu;lock to for Grade 43 Verticals, pages to for Grade 50 Verticalsand the top and base lifts braced page for Grade A spigotless verticals must always be used at the top so that a jack can be inserted. It provides nodal restraint and resists external forces. A guide to the reduced loading is given for the following 5 cases: If braces are terminated within the structure the vertical component force must be added to all other vertical forces and the total must not exceed the loads acaffolding.
Jacks Unbraced — Top Lift 1. Scaffolds should not extend more than two lifts above the ground or above the last tied level, except unloaded scaffolds under construction against the face of existing building when three lifts are permitted. If more than one line of diagonal bracing is required in a panel, then it is recommended that alternate lines of braces be sloped in opposite directions, as shown in the diagram.
Relevancy Transaction Level Response Mnual. Fast construction time slab formwork cuplock scaffolding by manual welding. Scaffolding Checklist Scaffold Safety Checklist. Cuplock Scaffolding Standard Welding Machine. Providing the worst condition is catered for both conditions are satisfied. Where jack bracing is necessary, it should be made using the details shown in these diagrams. The extension of the jack at the top, and the bottom, should be balanced, to give equal load carrying capacity, as shown on Data Sheets onwards.
When forkhead or base jack bracing is required, then shortbridle tubes should be used to provide a connection for the bracing. Again, care should be taken in the design of taller structures, paying particular attention to the overturning of the towers.
A release tool is also available. For braced scaffolds an effective diagonal brace must extend from forkhead to base plate level. Care should be taken to position the braces on legs which will be loaded during concreting.
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