-	Due to the arch supporting action, vertical and horizontal loads are produced
-	The horizontal arch thrust increases with decreasing arch rise
-	Uniform load transfer is guaranteed by the low bracket intervals
-	Tension rods and/or compression rods can be be installed at regular intervals to relieve the sub-structure
-	The support girder between the tension strips and/or pressure rods becomes the horizontal girder subject to bending
-	As a result of wind suction, opposing vertical and horizontal bearing forces arise
-	If no tension strips or pressure rods are installed these forces must be accommodated by the sub-structure
-	In the statical lay-out, dead weight (0.14 kn/m² and 0.32 kn/m²) snow loads and wind loads are taken into consideration
-	Snow, useful and wind loads are stipulated in various standards (e.g. ÖNORM B 4012, 4013, 4014-1, DIN 1055 Part 4 and 5)
-	Additional permanent loads are incorporated