13
APPENDIX A. Relative length of straight pipe runs
Table A.1 shows minimum values of relative length of pipeline
straight runs for type installation, different scheme of sounding depend-
ing on local hydraulic resistance types.
Table A.1
Type of local hydraulic
resistance
Relative length of a straight run, N, minimum
single-beam "diame-
tral" sounding
two-beam "chord"
sounding
four-beam "chord"
sounding
1
2
3
4
10
10
10
3
1
1
10
10
10
3
1
1
10
10
10
3
1
1
10
10
10
10
10
10
