Metal support of sheet of polygonal or troncoconical section.
In one or several sections, depending on the height.
when they go in several sections they are superimposed with overlapping by mechanical tracter.
Troncoconical up to 12 meters.
Poligonal up to 20 meters. It´s possible it is possible to concrete from 12 meters to minimize the oscillations of the support.
In its upper end it has a support plate prepared for fixing a CCTV camera, previous design. And a window for output of internal cables and connection to camera.
At its lower end the support is prepared with an anchor plate reinforced with brackets for fixing to the foundation block by means of anchor bolts.
The placement of the control boxes frame support is done at the desired height.
The support design and calculation is performed in accordance with the harmonized standards EN 40-3-1 and EN 40-3-3.
The corrosion protection is according UNE ISO 1461 standard which is guaranteed by galvanized immersion in molten zinc.
For the calculation of the foundation, we proceed to the calculation using the method Sulzberger, which is based on a verified experimentally principle that for limited inclinations of the joint support-foundation at an angle “a” relative to the vertical, such that “tg alpha”, the field behaves elastic.
This calculation method establishes an equilibrium condition that must be met:
Mv is the overturning moment of the structure.
Me is moment to balance or stabilizing terrain.
c.s is the safety factor, which is set to 1.5.
It is a metal support sheet section or polygonal frustoconical in thickness of 3-4 mm. The thickness is dependent on the quality of steel. The conical supports are manufactured up to 12 meters. polygonal tall and can reach 20 meters. In the polygonal from 12 meters. the foundations can be concreted to minimize oscillations support.
The sheet is folded by pressure and, in the case of the polygonal is in one or several sections depending on the total height you want to achieve. When you go in several sections the connection is made by superimposing overlapping by a mechanical tracter.
The cross section of support will also be based on height and stress to which it is subject. At its upper end has a support plate prepared for fixing a CCTV camera prior design. Turn on the upper end of a window to output internal cables and wireless camera is incorporated. At its lower end the support is prepared with an anchor plate reinforced gussets for attachment to the foundation block mediane anchor bolts. At a certain height from the base or anchor plate a picture-cabinet support is housed. The support design and calculation is performed in accordance with the harmonized standards EN 40-3-1 and EN 03/03/40.
The corrosion protection meets the UNE 1461 standard which is guaranteed by galvanized immersion in molten zinc, both of the grid, as Stairs and fasteners, resulting in a coating thickness of 55 microns at least in hardware and up to 150 microns in others surfaces. The sheet steel used is S235JR quality, S500MC s355JO and certified by the manufacturer according to UNE EN 10025 and EN 10149-2 respectively, with the following characteristics:
|Diameter||Nº of bolts||MxL||Foundation
|Diameter||Nº of bolts *||MxL *||Foundation
Foundations = A x A x H
A = width
H = depth
* The above data are approximate, for greater certainty consult factory since the foundation depends on several factors such as height are support surface (point effort) and terrain.
The bases are concreted or without concreting work under conditions of support.
It is shaped sheet metal supports by folding octagonal section, consisting of two sections we joined together by a hinge allowing the doldrums support to easily perform tasks change and maintenance of the cameras.