#G1----------------------------------------------
profile p l 5 c 2 90 l 5 c 2 90 l 5 c 2 90 l 5 c 2 90
polyline w 0 0 0 0 0 10
pipe p w p
nexplode p f
depouille result p 0 0 1 p_7 -5 0 0 0 0 0 1

checkprops result -s 540.527