©
Schletter GmbH
as of 10/2016
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Before setting up the PvMax3 system, the terrain must be prepared for the positioning of the concrete foundations.
Please consider that individual sub-racks that are part of one rack are not parallel to the subsoil beneath them. Thus, the
foundations have to aligned correctly. This alignment must be maintained for all the racks in order to avoid "terracing" that
would lead to shades on individual racks.
4.2. Foundation
4.2.1. Pre-cast strip foundations
4.2.2. Dimensioning and reinforcement
PvMax3 can basically be combined with all kinds of concrete foundations!
Ground-mounted solar plants are often built on re-vegetated landfill sites or agricultural terrains of low quality with bad
subsoil conditions. In such cases a foundation using posts at frost penetration depth mostly is not possible or not reasonable.
Thus, a foundation on concrete blocks made of pre-cast concrete or cast-in-place concrete is recommended as a standard
option. This kind of foundation is virtually always possible and very easy to carry out.
Other types of foundation on request!
Whether or not the subsoil is suitable for a certain type of foundation generally has to be determined on site in each case.
As a standard, strip foundations are put under the supports (continuous strips parallel to the module rows are also possible).
The weight of the foundations has to be dimensioned in such a manner that the wind loads are compensated by the
foundation weight only (see structural analysis).
The dimensioning of the foundations is carried out according to the structural analysis (by all means do specify the load
parameters - especially the wind loads!)
The foundations have to be reinforced by the concrete builder according to the loads that have to be considered.
4.2.3. Preparation of the soil and positioning of the foundations
WARNING
•
Only use construction machines and site vehicles that comply with local safety requirements and
which ensure protection of health and safety when used as intended.
•
Secure the work area by taking appropriate measures and make sure that there are no unauthorized
persons in the work area of the construction machines.
•
See to it that persons who are performing earthworks are protected by personal protective
equipment (PPE), such as high-visibility vest, safety shoes and hard hat).
