Load-bearing capacity of a crane. It decreases the further away the load is from the centre of the tower. It thus determines which Ioads can be transported within the pivoting range.
Specification of requirements regarding goods and services; is considered an integral part of the contract between customer and contractor.
Period during which the transport of a load is completely finished. The crane cycle continues until the crane is ready again for the next use.
Supplementary part for standard props which facilitates lowering supported or suspended beams with just one hammer blow. The lowering of the drop head allows for an early stripping of the beams and slab formwork panels. The head plate of the drop head still supports the slab during the lowering procedure and also afterwards.
Defines the main activities needed to assemble, intermediately clean and strip one square metre [sq.ft.] of formwork including all related minor activities (measured as h/m2 [sq.ft/mh]).
There is no standard definition for fair-faced concrete. In general it refers to "visible concrete surfaces" which are not plastered or painted in addition. It is a creative architectural element.
Mechanical parameter (product of modulus of elasticity and moment of inertia). Independent of their material, girders with an identical flexural strength will bend to the same degree if they are exposed to the same Ioads and conditions of use.
Part of the formwork which is exposed to the concrete. The forming face produces the required texture of the concrete.
Tensile bar to tie the formwork panels of a two-sided formwork. Today, formwork ties are basically made of thread bars with counter plates and wing nuts.
The pressure of the freshly poured concrete which acts on the formwork surface at a right angle. The value of the fresh concrete pressure is basically determined by: concrete consistency, rate of pouring (m/h) [ft/h], fresh concrete temperature, outside temperature and kind and quantity of additives.
A girder where the two chords are connected by a plain web plate and not by a weight-reduced lattice truss.
Latest generation of forming faces; made of different plastic layers and reinforced with aluminium or fibre layers. Compared to common plywood, this forming face – made of a plastic-composite construction – has a considerably extended lifespan and achieves a multiple number of reuses, since it does not swell or shrink.
Adjustable support link guaranteeing tensile and compression strength; is used to align the formwork and to secure it against horizontal Ioads as, for example, wind.
Concrete of controlled fabrication, which is transported to the job site with a truck mixer-ready to use.
Protects the forming face against concrete adhesion. The use of a release agent considerably eases the stripping of the formwork, and it protects the surface of the forming face.
Application of the release agent on the forming face. Release agents should be applied very sparingly in order to get a perfect concrete surface.
With self-compacting concrete, there is no need to compact the concrete while pouring with internal vibrators or external vibrators which are attached to the forming face from outside. The SCC fills up any shape of formwork without leaving cavities and tightly encloses the reinforcement. lt de-aerates and Ievels itself.
Shoring structure made of standard parts which serve to transfer vertical Ioads.
Is required if the formwork panels can only be assembled at one side of the wall, or if the spacing between the opposing panels is too large to tie the panels with formwork ties.
Load-centring component of slab formwork, for example formwork girder.
In most cases a triangular, truss-like component to transfer the Ioads derived from the fresh concrete pressure of single-sided forming.
Serves to move table forms or working platforms to the next floor Ievel by crane.
The normal case of forming. Formwork panels are erected on both sides on the wall (which has to be formed) and connected to each other with formwork ties.