The anchoring system of each balcony must be corroborated by a static engineer’s calculation, correspond to the static scheme chosen, and respect the relevant particulars of the building’s details.
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The choice of anchoring system depends on the concrete situation and conditions, e.g., whether we are to replace an old balcony with a new one or the house is being or to be winterized (external insulation).
In cases involving balcony replacement with simultaneous winterization, the static engineer makes an assessment of the existing suspension hooks. If satisfactory, these hooks may be fitted with special extension consoles. Once the winterization is completed, the balconies may be hung on the hooks.
If the existing hooks are not satisfactory or the new balconies should be larger than the current dimensions, the static engineer computes and suggests a concrete solution, as to where and how the anchoring system could be fastened.
The basic variants of anchoring are:
1 Anchoring through brick wall
If this system is proposed, it involved drilling through the building’s wall into the interior. A steel plate is thereupon mounted onto the wall of the room inside, which is then set into the surrounding brick wall.
2 Anchoring by means of a chemical anchoring
This variant is more modern and gaining popularity in recent years. It may be applied to houses made of concrete blocks as well as bricks. The number and diameter of the anchoring element must be determined by the static engineer.