- Finished floor height and level: Within a single floor area a datum height will be agreed between the floor installer and the main contractor. This datum height will be directly related to the building datum. This will determine the height to which the raised access floor will be installed. The raised floor will be installed level to this datum by the use of rotating laser.
- Set out of the raised access floor system: This is a very important aspect in ensuring that the raised floor operates satisfactorily throughout its anticipated life span. Depending on the size and shape of specific floor areas and size and location of any obstacles on the sub-floor a range of solutions can be sought. Raised access flooring panels are cut on site to fit at perimeter walls therefore a best fit situation can be sought using the appropriate floor panel module size. Ideally the setting out of the panels and pedestals can be coordinated by:
- Working in line with other building modules to avoid regular obstructions.
- Working out from the centre of an area.
- Working to column centres.
Cut panels should ideally be cut just under a full panel width or a half panel width in order to minimise wastage. Cut panels of less than 150mm width should be avoided in order to maintain structural integrity. When it is not possible to avoid small cut panels the following solutions are available:
In-board cutting, the principle of maximising the size of a cut panel by additionally cutting the last field panel adjacent to the perimeter. On certain product ranges and structural grades oversize panels are available as an alternative to the above.
