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Planning
4
Installation surface
46
Building Technologies
007016_i_en_--
Fire Safety
2012-09-07
Calculating the lengthwise expansion of the roof Δl:
Δ
l = l
×
×
Δ
T
α
= 80000 mm
×
40 K
×
= 38.4 mm
0.000012 K
-1
Calculating the angle β:
β
=
arctan
h
Δ
l
= arctan
4000 mm
38.4 mm
= 0.55°
Calculating the deflection c:
=
β
c
tan
×
l
= tan (0.55)
×
80 m = 0.77 m
The deflection c is 0.77 m.
DLR
FDL
Possible solution: Install the detector on the stable surface and install the reflector on the
unstable wall