1 Unit base x 8 rows : total weight = 152 kgs . total weight for 9 units : 1 368 kgs
Total holding posts :28 . Sharing load : 48.0 kgs /post .
Strenght and resistance : for winds of 50 m/s (typhoon no 10 condition) .
One unit base of 20 turbines is facing approx 240 N force for a direct hit .Total force for 1440 turbines = 17 280 N force .
The average force applied per post is: 640 N . The posts are designed to take 10000 N / 2 meter .
Each unit base will be welded to the posts in order to avoid screws and give flexibility during installation.
Each posts and frames will be made of stainless steel 304 grade .the location being on sea shore ,corrosion is a primary issue .
The frame and mounting frame should have an expected life span of over 30 years .
Remark 1: the mounting frame will be monitored and reinforced if needed .
Remark 2: the load will be applied only on the parapet .No load on the roof slab and no work will be done on the roof slab ,preserving the roof waterproofness . Each post will be attached to the wall by 4 concrete machine screw anchor .Each post will be firmly and definitively anchored by a welded hook barre over the parapet .