Lines require loops

Dear Mr. Ikram,

Assumming no extra space is available for thermal expansion, how do we detrmine which lines require loops, based on the line spacing at the east end of the pipeway under consideration?
I want attach the drawing but how Mr. Ikram?

Please explain your problem. Do you have high temperature lines? Only long lines with a temperature difference of about 100 Deg C with ambient temperature need loops. Pl. check.

Dear Mr. Sudhir,

I have lines as follow:
4"-500°F S.S. 2”-IH 375 FT
8”-500°F C.S. 2”-IH 350 FT
4”-250°F C.S. 375 FT
10”-150°F C.S. 350 FT
16”-150°F C.S 350 FT

I can't show you the pipe drawing here. May I have your email so I can send you the drawing?