FARCIMAR developed a set of reinforced precast concrete, in order to construct sportive stadium grandstands, halls, auditoriums, amphitheatres, among others, adapting easily to any type of work.
The grandstand solution of Farcimar allows the full precasting of elements from a grandstand, which go from precast footings, columns, grandstand beams, grandstand steps and grandstand seats . It can also contain Facing Panels, partition Walls and other precast elements , according to the project in study.
The possibilities related to the production of di?erent precast elements are enormous, which is translated in a versatility of solutions capable to respond to the most daring architectural creations.
The di?erent products can be used together or separately, i.e. the customer may choose to perform certain elements at work and on them apply the other precasting.
The use of solutions for Farcimar’s grandstands present enormous advantages, such as:
•Easy adaptation to speci?c needs of any work;
•Perfect ?nishing without the need of additional works;
•High productive capacity introduced, allowing very short deadlines;
•Speed of implementation and entry in service, therefore cost reduction;
•Improvement of working and security conditions due to speed and simplicity of the mounting procedures;
•Greater durability face to quality control related to its production;
•Compressive strength class – C25/30;
•Full dimension of Inert - 22mm;
•Concrete consistency - S1;
•Chloride levels - Cl 0.10 (Cl- < 0.10 % by coloured cement);
•Exposition – according to legal requirements;
•Rebar A500 NRSD
Rebar Cover – according to Exposition.
The checking for limit conditions is made by using calculation software internally developed and properly tested, being adopted the combinations provided in the existing legislation.
The calculations obey what was de?ned by the customer / base project and take into account the typology of usage.
The di?erent precast elements constituent from the solution of grandstands are produced by the process that we designate as manual moulding, in metallic moulds of high strength, being the vibration done through high frequency vibrators, which can or not be coupled to them, which allow obtaining parts with high quality and accuracy, presenting its perfect ?nishing.
The system of production used allows the production of parts with di?erent geometries, according to needs, by just making short adjustments in the movable elements (divisions).
The production procedure of precast concrete comprises the following tasks:
•Steel frame assembly and positioning;
•Concrete curing in the mould;
The mounting of moulds and its preparation for concreting is done following the production order and consists essentially in the insertion of di?erent movable elements (divisions), armours and respective spacers and elevation ?ttings.
After a previously checking, the concreting must start, being the elements concreted horizontally with a visible face, turned down.
The concrete, without interruptions, is carefully introduced into the moulds, in order to avoid abrupt changes in its characteristics. Start with the vibration forcing it to enter in all corners and hollows in order to avoid gaps and other defects. At the beginning of the vibration, the mould is already with the concrete part inside and it ends only when the ?nishing of the upper part of the piece is completed.
Ended the concreting and according to the weather conditions of the height, you can proceed with the “moist cure” or “heat cure”. However, in order to avoid moisture loss and ensure a cure which allows a certain tightness (to the penetration of gas or liquids) of the super?cial area, the parts are usually covered with a plastic layer.
Usually the demoulding of the various elements starts approximately within 24 hours of the concreting. In this process it is used an overhead crane which allows, through the connection of cables to the elevation elements, embedded in the parts, its demoulding in a simple and safe way.
Removed from the moulds, the elements are placed, in the interior of the industrial complex, pilled on the wood ceiling and remaining during 24 hours, then, the precast elements are transported to the storage local where they remain until dispatch.
It is mentioned that the precast elements are produced with adequate elevation accessories ensuring an e? cient and safer handling, in the plant, in loading, unloading and mounting process at place.
Since the aesthetic aspect of a grandstand work is of the utmost importance, for its permanent public exposition, the requirements in relation to the ?nal quality of the precast elements is very high. For these products it is demanded a higher strength, both in dimensioning and ?nishing.
However, the dimensioning, production and control of the precast elements according to the current legislation, associated to versatility and strength of the productive equipments, handled by experienced operational teams which Farcimar has, allow the obtaining of parts with high quality and accuracy to the maximum pro?tability.
Farcimar besides the execution of the project, production and transport might also assume the mounting of precast elements, adding an advantage for its customers.
The procedure of application on site of the concrete precast elements constituent from the grandstand solution, as mentioned before, which may also be assumed by Farcimar requires a reduced and disciplined team with a maximum of three workers and an autocrane as a mean of elevation.
The mounting steps vary if we are in front of a full precast solution or if it is an application of certain precast about executed elements on site, being the cares and preliminary work also di?erent.
As regard to the connections between di?erent precast elements of Farcimar grandstand solution, these are usually realized by epoxy gluing (in connections between grandstand steps and grandstand beams) and metallic connection further sealed (in connections between columns and grandstand beams)
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