7
2.1.4
Now stretch line for the marquee width and align at right angle
(exact alignment follows).
2.1.5
Measure marquee width from the centre of the 1st base plate to the
centre of the 2nd base plate, align base plate parallel to the line and fix
with ground anchors (see Fig. 2, page 9).
2.1.6
At the line for the marquee length, lay out the 3rd base plate in
parallel. Measure the exact truss distance (TD) from the centre of the 1st
base plate to the centre of the 3rd base plate and fix 3rd base plate with
ground anchors.
2.1.7
According to Fig. 2, measure TD between 1st base plate and 2nd
base plate and mark point B. Measure at the line between 1st base plate
and 3rd base plate and mark point A.
2.1.8
If there is a diagonal line between points A and B, then the right
angle is guaranteed, if not the line between the 1st and 2nd base plate
should be pushed such that the required dimension is achieved.
2.1.9 1.
Readjust base plate if required and align again to the line. Check
the marquee width between 1st base plate and 2nd base plate once
again and fix 3rd base plate 3 with ground anchors.
2.1.10
Similarly align 4th. base plate to the line for the marquee length.
Measure exact TD between the centre of 3rd base plate to the centre of
the 4th base plate and fix 4th base plate ground anchors.
2.1.11
Repeat above steps until all the base plates of a marquee side are
fixed.
2.1.12
Starting from the 2nd base plate, align the base plate for the
opposite marquee side and fix with ground anchors.
2.1.13
It is recommended to carry out a final inspection of the marquee
dimension between the centres of four external base plates.