The MEVA Formwork Wiki explains important technical terms in formwork technology and provides interesting background information.
Did you know...?
Deep and strip foundations, dry ties with EcoAs, AluFix or StarTec / AluStar
Save time on foundations and walls with dry ties. The hand-set systems EcoAs, AluFix and AluStarTec are easy and fast to set up horizontally when pouring deep, strip or sleeve foundations. The range of panel sizes allows for a flexible adaptation to any layout. In addition, dry ties can be achieved with panels in a horizontal position by using a foundation tape. It takes up tractive forces up to 10 kN and is used together with the tape tensioner to form the lower tie. A tie claw, sleeve and flange nut 100 are all you need to form the upper ties.
The circular column formwork Circo is predestined for more than circular columns with a superior, architectural concrete finish
It is available with column diameters from 25 to 80 cm in steps of 5 cm and in heights of 50, 100 and 300 cm. Since Circo is compatible with the Mammut 350 wall formwork, its half shells can be connected to wall panels to form perfect rounded wall ends. This is done easily and quickly using the standard M formwork clamp. Thanks to its robust steel build, Circo has a load capacity of 120 kN/m². This allows you to pour at any speed up to a height of 4.80 m, irrespective of concrete type or ambient conditions. A working platform with an all-around fall protection, integrated ladder access and safety cage ensures perfect worker safety when pouring high columns.
MevaDec is the slab formwork without a grid
Compared with other slab systems, the MevaDec system comes with one unique, advantageous feature: It works without a fixed grid, i.e. you can place the panels to perfectly match the slab’s geometry, e.g. by changing the direction of the beams or by placing the panels crosswise or longitudinally, or a combination of both.
Brace bracket takes up slant
The brace bracket SK 80 is used to form slab and foundation edges up to a height of 80 cm. It is equipped with an integrated plastic nailing bar for easy attachment of forming sheets, boards or planking. The brace bracket can be attached via flange nut to the multi-function profile on MEVA formwork panels and can be slanted from -15° to +15°. This makes work in unlevelled terrain safe and easy.
Form Slabs and Walls with one System
…that the AluFix hand-set system can be used for both walls and slabs. A special prop with AF prop head transforms the wall system AluFix and its top technical features into a flexible slab solution.
Save costly Consumables. Save Release Agent
...that the all-plastic facing alkus can be cleaned with up to 1000 bar high pressure. Not possible with plywood. Cleaning the facing reduces your release agent consumption to 10 % of the usual amount.
Safe, Quick Lowering of Props
...that the SAS rapid lowering system, developed and patented by MEVA, allows MEP props to be lowered with a single hammer blow. The prop re-sets automatically into start position, improving safety on site.
Early Stripping of Slab Formwork
...that the MevaDec slab system enables you to strip and re-use beams and panels for the next pour. The drop head is lowered by 19 cm for easy stripping of the formwork while the prop stays in position to support the freshly poured slab.
The Grid-Free Slab Formwork
…that the MevaDec slab formwork is the slab system that adheres to no grid. You can change forming direction freely, minimising compensation areas.
Formwork with 100kN/m² concrete load capacity and free pour speed up to 4 m
...that the heavy-duty wall formwork system Mammut 350 has a load capacity of 100 kN/m² throughout the system, not just with a few panels. This allows you to pour as fast as you want up to 4 m.
Hand-Set Wall Formwork with Grip Profile
…that the hand-set formwork system AluFix is equipped with an ergonomically shaped grip profile. It makes it easier to handle the panels, even when wet.
Best-in-Class in Weight-Performance Ratio
…that the aluminium wall formwork system AluStarTec is best in class when it comes to weight-performance ratio. No other aluminium hand-set panel has a consistent concrete load capacity of 65 kN/m² at a weight of only 65 kg for the largest panel.
Double Chamber Aluminium Hollow Profile
...that the double chamber aluminium hollow profile developed by MEVA made it possible to use light-weight aluminium as a robust and sturdy panel frame.
Secure Attachment of walkway bracket
...that attaching the walkway bracket to all MEVA wall panels is quick, easy and safe using the identical method. The bracket is attached to the multi-function profile, secured (cannot slip out) and fastened with a standard flange screw 18 to the next multi-function profile. The bracket stays secure in any position and cannot slip.
Pours without a single Joint or Imprint in the Finish
...that the all-plastic, 100 % wood-free facing alkus can be welded to form large forming surfaces. This enables you to pour concrete without any joints or imprints. The facing can also be cut to size, shaped and pre-bent for special geometries.
Capacity of lifting devices
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.
Tie rod system for bracing the formwork elements of single- and double-face formwork. It consists of the formwork tie components washer, tie rod fastener and tie rod.
Fresh concrete pressure
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.
Plastic-composite construction (forming face)
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.
Release agent application
Application of the release agent on the forming face. Release agents should be applied very sparingly in order to get a perfect concrete surface.
Self-compacting concrete (SCC)
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.