ARTOSI PERGOLA
MEASUREMENT
In case of pergolas, the outer structure envelope is measured. The
following is entered: overall width [S], overall length [L], and passing
height [H] of each post.
The pergola’s perimeter frame must be level and rectangular in all
directions after the installation. When taking measurements, be
careful about the heights and evenness of the individual anchoring
points for the posts. The anchoring points for the posts must have
sufficient load-bearing capacity in order to withstand all loads
transferred to them by the post feet. Also pay attention to evenness
and squareness of the individual neighbouring structures to which
the pergola will be attached. If the pergola’s perimeter frame is to be anchored to surrounding structures,
said structures must have sufficient load-bearing capacity to withstand all loads transferred to them by the
perimeter frame. When incorporating the pergola to or close to surrounding structures, it is necessary to
consider the possibility of dimensional changes to the pergola due to the surrounding temperatures (see
Artosi Technical Manual).
LINEAR EXPANSION
When the temperature of aluminium increases, the metal will expand; this phenomenon is called thermal
expansion. The coefficient of thermal expansion of aluminium alloy is 23.5 μm/(m*K).
Example:
At 20 °C, an aluminium profile measures 7000 mm. When heated to 50 °C – during a sunny day –it will
measure 7005 mm due to thermal expansion. The length will increase by +5 mm as a result of the change in
aluminium temperature.
When incorporating the pergola to surrounding structures, it is important to consider change in the pergola
dimensions due to ambient temperature.
When taking measurements of screen roller blinds and installing them in the pergola, it is necessary to
consider thermal expansion of the aluminium profile in relation to ambient temperature. We recommend
that measurements be taken at ambient temperatures of 23 ±5 °C.