The Salt Lake herald. [volume] (Salt Lake City [Utah]) 1870-1909, 1891-03-13
STONE Is THE BEST
Opinion of a Contractor on Side
walk Material.
UTAH ASPHALT IN DENVER
30 Far it Has Stood the Test in Good Shape
1t is Known In Denver as
Domestic

Joseph Williams, of Denver, who in
conjunction with E. L. Dubois, turned up
with the best bid on the Parley's canon
conduit, has in his time swung some OF the
biggest paving and sewer contracts in the
country.
Mr.. Williams paved part of Washington's
famous Pennsylvania avenue, and built in
that city the largest sewer in the world.
This sewer was 30 feet in diameter and two
miles long, the enormous size being re-
CURED to carry the water as well as serve
as main sewer. 1t cost Sl17.50 per lineal
foot. There is a sewerin Paris OF the same
dimensions but it is less than mile in
length. =, s Es"~
Mr.. Williams was in this city eight years
ago looking for sewer contracts but did not
meet with sufficient encouragement to re-
main longer than one week. SIT is a much
better town than then" he said in his
plain spoken way. you're going to have
a great city," he continued. SIT will be
more expensive to pave here on
account of the width of your streets unless
you can make the treet car Companie do
part of it. Denver has just begun to pave
They have got down two or three blocks on
the side of one of the streets. They have
the contracts let on Fifteenth, Sixteenth
and Seventeenth streets from the depot to
Broadway. So far they haven't spoken of
any other kind of pavement than asphalt,
with concrete base, except one street on
which there is heavy truckage. l think
that asphalt would do better here than
theresbecause your streets are wider which
would give more travelling space. They
put piece on Laramer street, opposite the
postofice, with Utah asphalt and it has
stood an unusually hard winter without
showing any signs of wear
or tear. They call it domestic asphalt
there, and Utah can feel proud of being on
terms of domesticity with the metropolis of
Colorado. Many of the streets in Wash
ington are paved with Neuchatell asphalt,
| which is the natural material, as all that is
necessary to do is to melt it down, no oil or
other compositions being required. All the
of it, but the foreign asphalt is quite eX-
pensive to import into this country
Denver will eXpend 100000 on sewers
this year. They are putting down pipe
altogether"
What size does your experience lead you
to recommend for lateral and main sewers p'
''As rule, l would advise double the
size which the engineers slipulate."
''What do you mean by thats'
on the full capacity of the pipe, while
only count half its capacity"
"Will you explain this!'
Eyes, it is very simple. When the water
rises above the middle of the sewer, and is
at all impeded in the flow, the water IN
displacing itself to overcome the obstruc
ton must rise. When the sewer is only
half full there is no downward pressure
but when it rises above the center it comes
in contact with the top of the sewer
and cannot spread, but must be con
tracted, thus causing great deal Of
friction and impeding the flow. There is
also the advantage in large sewers over
small ones in cleaning them out by flushing
When the sewer is large and it becomes
clogged you can introduce a volume O.
water with weight enough to 1t to clear
out everything before it.
In figuring the carrying capacity of
sewer only 60 per cent. of its area should
be counted.n
what kind of sidewalks would you re
commend"
"There is only one kind worth talking
about, tagging"