The Owyhee nugget. ([Silver City], Idaho) 1905-1984, 1910-06-02

sist of what is commonly known as a steel
tubular pier, consisting of two ~ 42"
tubes, eighteen (l8) feet long All ma
terial shall be of the kind and class as
shown on the plan for center pieR
End Pier or Abutments. The end piers
or abutments, shall, in case one timber
span is used, consist of one pile pier here
in formerly referred to. 1.-two steel spans
are used they shall both consist of what is
commonly known as reinforced steel
pile and concrete pier. The main walls
shall each consist of five (5) nine 90 inch
I-Beam piles 26 feet long. The wings up
stream shall be twelve (12) feet long and
down stream eight ~ feet long Each
twelve (l2) foot wing to consist of three
t3) six (6) inch I-Beam piles twenty-five
(22) to twenty-four (24) feet long and each
eight g foot wing to consist OF two "
six (6) inch I-Beam piles twenty two (22)
to twentyfour (24) feet long.
All main wall piles and wing wall piles
shall be reinforced by running q" rods
through the webs Of each pile every fifteen
(15) inches. After the piles are driven to
firm bearing they shall be incased in a
wall of concrete fifteen (l5) inches thick
for the main walls and ten (10) inches
thick on the wings. The concrete to be
composed OF any standard American Port
land Cement one ~ part, to two and one
half (215) parts of clean sharp sand, free
from dirt or any other earthly substance,
and three to four parts of broken rock or
gravel
The walls when completed shall show a
reasonably smooth snrface and care must
be taken to fill all flaws thoroughly with
concrete The total structure when com
pleted shall show the material to be first
class Of its kind and all labor to be per-
formed in thorough workmanlike man
ner and to the satisfaction of the Board
of County Commissioners.
1t being understood that minor changes
may be made in these specifications, and
if SO, they will be agreed upon by the
Board, and be made known to the bid
ders before bids are filed.
Notice Is Also Given, That sealed bids
will be received at the office of the Clerk
of the Board Of County Commissioners of
said Owyhee County, for the construction
and erection of bridge across Succor
Greek, nea Homedale, in said County,
in accordance with the following specifi-
cations:
General Description: The structure
shall consist of one steel span 70 feet from
center to center of end pins and l6 #.
clear roadway, resting on reinforced con-
crete piers. The entire structure to be de-
signed for a moving load of 1900 lbs. per
lineal foot of span and dead load of 40
lbs per lineal foot of span. All materials
shall conform to sizes and dimensions
shown on the plan on file with the Clerk
of the Board.
SALES.--FUTURE; The abutments shall be
Of steel piling and concrete as shown,
these to be placed and of the dimensions
marked on the plan. Piling and piers to
be of the sizes and lengths shown, and
shall be set to the proper depth to bring
the bridge to a proper grade. A 1 adjust
able tie rods shall be used where shown,
and shall be drawn up before concrete is
deposited.
All concrete shall be of the proportions
of one part cement, two parts sand, and
four parts gravel or broken stone. Ce-
ment must be some well known and APP
proved brand; sand shall be clean, sharp
and free from organic matter; and gravel
broken so as to pass through a 21s" ring.
Superstructure: The structure is de-
signed to carry live load of 1900 lbs. per
lineal foot of bridge. All dimensions of
the various members are shown on the
drawing. All metal work must be medi-
UNI steel and must have an ultimate
strength of from 6O,OOO to 10000 pounds
per square inch, and elastic limit of not
less than one-haf the ultimate strength.