2006-08-07 08:27:43 · 7 answers · asked by Luke W 2 in Science & Mathematics ➔ Engineering
To allow for thermal expansion. As the temperature changes, a bent pipe can flex slightly to accommodate the thermal changes in its length.
2006-08-07 08:32:52 · answer #1 · answered by Anonymous · 0⤊ 1⤋
The primary reason is the availability of right of way. Some people don't want a pipeline on their property.
Other times it is better to select a route with as few land owners as possible. If you have to purchase right of way from many smaller owners you can have snag with one land owner and that can hold up the the securing of the whole route.
Terrain can be a consideration on occasions as can rivers, lakes, populated areas, schools, churches, cemeteries, etc.
Concerns about expansion or contraction are seldom a problem since there is sufficient space on the right of way and in the pipeline ditch to allow for thermal considerations.
2006-08-08 05:57:07 · answer #2 · answered by oil field trash 7 · 0⤊ 0⤋
gas and oil lines are crooked to keep the pipes from breaking. A crooked pipe will move around a little instead of snapping in two. a ridgid pipeline would come apart as the earth moves.
2006-08-07 09:55:48 · answer #3 · answered by Ray Blank 1 · 0⤊ 0⤋
'rhsaunders' is right, it is to allow for thermal expansion or in the case of pipes carrying cold gases thermal contraction without excessive stresses building up. As other people have mentioned there may also be other reasons why a pipe is not straight.
2006-08-07 09:34:22 · answer #4 · answered by Robert A 5 · 0⤊ 0⤋
because they are built according to "strategy" and they tend to avoid areas of high political, geographical or other kinds of risks.....
2006-08-07 08:34:09 · answer #5 · answered by Hibernating Ladybird 4 · 0⤊ 0⤋
My first instinct is to say "property rights".
2006-08-07 08:32:14 · answer #6 · answered by BigRichGuy 6 · 0⤊ 0⤋
The answer is obvious: OBSTRUCTIONS
2006-08-07 08:34:12 · answer #7 · answered by eferrell01 7 · 0⤊ 0⤋