The Lexington advertiser. [volume] (Lexington, Miss.) 1904-1985, 1947-09-11

When the length of pipe is shorter
than that given in the above table
it shall be adequately supported.
Whenever there is a change of
direction of As degrees or more or
a branched fitting is used, support
should be provided on at least one
side of the bend or fitting, prefer
ably within six inches of this point,
unless other supports render this
unnecessary.
(c) Fastening Pipe : Only such
pipe straps, iron hooks, Hook plates,
or hangers suitable for the size of
pipe to be secured, and of standard
strength and quality, shall be used
for supporting piping.
Pipe straps or iron hooks should
not be used for fastening pipe of a
size over 2 inches. Beyond this size,
when the pipe is horizontal and is
to be fastened to the floor joists or
beams, pipe hangers should be used;
when the pipe is horizontal and is
fastened to the wall, hook plate
should be used. In case of a vertical
pipe over two inches in size, a strap
made of band iron fashioned on the
job, or a standard form of prepared
band strap securely fastened to the
wall should be employed.
Id Securing Pipe to Wood Walls,
partitions, or Ceiling = When pip
ing is run on wood walls, partitions,
or ceiling, the supports should be
securely screwed (not nailed) to the
woodwork at the intervals given i n
(b). When the piping does not run
sufficiently close to the woodwork
to admit its being fastened directly
thereto, wood strips spaced at the
distances given in (b) should be
securely fastened to the woodwork
as above described.
(e) Securing Pipe to Concrete
Missionary, Brick or Tile Walls, a
titions, or Ceilings : When piping
is run on masonary, concrete, brick
or tile walls, etc. It should be rigid
" fastened by hoods, metal straps
or pipe hangers which are securely
held to the wall, partition or cell
ing bv the use of suitable expan-
sion bolts or other approved devices
spaced at the distance given IN (b).
If this method is not p~ractlcanie'
the hooks, metal straps, or pipe nam
gers should be fastened by screws
TO plugs or blocks, which should De
firmly embedded in the masonary,
or TO wood strips securely fastened
to the masonary. Note: Pipes snail
not be fastened to walls of CHM
neys or flues.
Cutting Timbers
When, in running pipes, it is ne
cessary to cross wood ioists or
beams, they shoull be notched as lit
tie as possible, but never to a depth
of more than one-fifth of the depth
of the timber. This notching shall
be as close as possible to a point OF
support of the timber, and should
in no case be further from a support
than one-sixth of the total unsup-
ported span of the timber. Where
feasible, the piping should be run
Lso that timbers having the shortest
spans shall be cut.
Grading Piping
(a) Piping to- be Graded : All
piping shall be graded, preferably
not less than Va inch in Is feet, to
prevent traps, and also to prevent
! level runs as far as practicable. All
horizontal pipes shall grade to YER
teal pipes unless the structure is SO
framed as to prevent this; but this
rule does not permit violation OF
rule. on cutting timbers.
Note:- In each case where no prac-
ticable method for avoiding a trap
in the pipe system in known to the
gas filter, the proper administrative
authority or the gas company shall
be consulted and advice secured as
to the best method of advoiding the