TANDCOVE undertakes and understands both the cost saving and risk reduction prerequisites in providing precise sizing for solar pile foundations.

Tandcove does not rely on geotechnical estimates (plus large safety factors) when reviewing project pile foundation requirements but rather undertakes specifically designed pile load tests, which accurately determines specific foundation needs (including drivability survey) with pile specification limitations. Soil corrosive testing forms a necessary part of the specification requirement.

Accurate pile testing often determines a reduction in overall pile sizing and foundation embedment need. For example, a simple reduction in the embedded depth by approximately 300mm across a100mw project will save the installer over a million dollars.


General Scope of Work

Tandcove will carry out or procure mounting structure’s foundation study at the proposed project site. The study will be used to determine and recommend the type and specification of foundations best suited for the recommended PV module-mounting structures).

A thorough geotechnical assessment with on-site pile testing can reveal important truths about the project site that reduce steel costs, optimize system designs and improve installation times.


Onsite Investigations:

Tandcove will undertake full-scale in situ pile load testing, resulting in the most precise and the only direct method to determine foundation capacity. In testing, the movement of a prototype foundation will be measured under simulated design loading conditions.

Mythologies for testing in tension and for lateral testing will be employed.


Desktop Study:
L-Pile / All Pile modelling

Deliverables
Tandcove will produce:

1. Identify suitable foundation type,

a. Driven Pile
b. Helical Piles
c. Earth-screws and
d. Ballasted foundations


2. Prepare a specification report detailing:

a. The methodology, results and conclusions/recommendations of the on site foundation type, load testing and including;
b. Deep foundation load testing allowing test methods to withstand independent engineering reviews that are often required by financing partners;
c. Cone penetration testing (CPT)
d. Dilatometer modulus testing (DMT)
e. Laboratory-precision data acquisition.
f. Construction principals to be adopted;