survey archway
	centreline
		station 0 entrance
		station 10 entrance
		data cartesian from  to  dx  dy  dz ignoreall
		0	1	132.5	-82.5	0			
		1	2	90.5	44.5	0
		2	3	57.5	-52	0
		1	4	-0.5	75	0
		4	5	78	45.5	0
		5	6	57.5	106.5	0
		6	7	-67.5	39.5	0
		7	8	-82.5	-22	0
		8	9	-46.5	5.5	0
		9	10	-44.5	-17	0
		10	11	-26.5	-44.5	0
		4	194	120.5	51	0
		194	195	60	0	0
		195	196	60.5	77.5	0
196	197	58	2.5	0
endcentreline
endsurvey