>
>
> 1. All pipe is to be made of
> a long hole, surrounded by
> metal or plastic centered
> around the hole.
>
>
> 2. All pipe is to be hollow
> throughout the entire length -
> do not use holes of
> different length than the
> pipe.
>
>
> 3. The I.D. (inside
> diameter) of all pipe must
> not exceed the O.D. (outside
> diameter) - otherwise the
> hole will be on the outside.
>
>
> 4. All pipe is to be
> supplied with nothing in the
> hole so that water, steam or
> other stuff can be put inside
> at a later date.
>
>
> 5. All pipe should be
> supplied without rust - this
> can be more readily applied
> at the job site.
>
>
> N.B. Some Vendors are now
> able to supply pre-rusted
> pipe. If available in your
> area, this product is
> recommended as it will save a
> lot of time on the job site.
>
>
> 6. All pipe over 500ft
> (153m) in length should have
> the words "long pipe" clearly
> painted on each end, so the
> Contractor will know it is a
> long pipe.
>
>
> 7. Pipe over 2 miles (3.2km)
> in length must have the
> words "long pipe" painted in
> the middle, so the contractor
> will not have to walk the
> entire length of the pipe to
> determine whether or not it
> is a long pipe.
>
>
> 8. All pipe over 6" (152mm)
> in diameter must have the
> words "large pipe" painted on
> it, so the Contractor will
> not mistake it for small pipe.
>
>
> 9. Flanges must be used on
> all pipe. Flanges must have
> holes for bolts quite
> separate from the big hole in
> the middle.
>
>
> 10. When ordering 90
> degrees, 45 degrees or 30
> degrees elbow, be sure to
> specify right hand or left
> hand; otherwise you will end
> up going the wrong way.
>
>
> 11. Be sure to specify to
> your vendor whether you want
> level, uphill or downhill
> pipe. If you use downhill
> pipe for going uphill, the
> water will flow the wrong way.
>
>
> 12. All couplings should
> have either right hand or
> left hand thread, but do not
> mix the threads - otherwise,
> as the coupling is being
> screwed on one pipe, it is
> unscrewed from the other.
>