Installing deck tile pedestals is not an exact science and considerations must be made to accommodate different situations. The number of deck tile pedestals required is directly proportional to the number of hardwood tiles to be installed.
First and foremost, you need a planning guide and drawing of the installation area with a proportional deck tile layout grid. (Plans, CAD drawings and/or illustrations should be prepared and approved by an accredited architect or construction designer.) This will show where each hardwood deck tile will be placed.
The number of pedestals required for your specific area will depend on the following:
Total number of hardwood deck tiles used
The dimensions of the hardwood deck tiles (24" x 24")
The shape of the installation area
Drainage areas and the number of drains
Any anticipated heavy load on the deck