Civil Engineering Reference
In-Depth Information
2
Berechnungshilfen
2.1 Mathematische Grundlagen
2.1.1 Geometrie
Flächenberechnung
1
2
Quadrat
2
Aa
a A
da2
=
=
=⋅
Rechteck
Aab
=⋅
22
d
=+
a
b
Parallelogramm
Aahab
=⋅=⋅⋅
sin
α
)
2
2
(
d
=+⋅
a h
cot
α
+
h
1
2
(
)
2
d
=−⋅
a h
cot
α
+
h
2
Trapez
ab
+
A
=
⋅ = ⋅
h m h
2
ab
+
m
=
2
Gleichseitiges Dreieck
2
a
A
=⋅
3
4
a
h
=⋅
3
2
