The Rock Island Argus and daily union. (Rock Island, Ill.) 1920-1923, 1920-04-17

above mentioned point southerly
500 feet.
AT point "B" as hereinbefore To-
Gated $50 feet.
i With a uniform grade bteween
| said points as hereinbefore fixed.
The elevation of the flow line OF
the First ust) street branch storm
sewer rs hereinbefore described
shall be as follows:
| At = point ten (10) feet west Of
the east line of First (1so street
and thirty-five 1851 feet north Of
the north line of Eleventh (llth)
avenue 1852 feet.
| At q point 482 feet south Of said
last hereinbefore described point
and ten (10l feet west of the east
line of First 1stD street, said 4S2
! feet being measured along the CEN
ter line of said sewer from said
! last mentioned point southerly 1914
| feet.
At a point EOS feet south of said
| last hereinbefore. described point
and ten (10D feet west of the east
/; line of First (1st) street, 24.22 feet.
With a uniform grade between
said points as hereinbefore fixed.
The grade of the flow line be-
tween the wingwalls at the upper
end Of each Of the hereinbefore de-
scribed storm sewers on Third
| (3rd) street and Sixth (6th) street.
shall be in the same right line as
the grade Of the flow line Of the
adjacent storm sewers Immediately
below said wingwalls.
The grade of the fiow line be-
tween the wingwalls at the lower
end of the hereinbefore described
storm sewer on First 1st) street
| shall be in the same right line as
the grade of the flow line of the
adjacent storm sewer, Immediate
ly above said wingwall
The grade of the flow line OF the
concrete storm sewer beginning at
point B" as hereinbefore located
shall be in the same right line as
the grade of the flow line Of the
1 segment block storm sewer imme-
diately below said concrete storm
sewer.
The grade Of the flow line of the
concrete storm sewer beginning at
point "C'' as hereinbefore located
shall be in the same right line as
the grade of the flow line Of the
segment block storm sewer imme-
diately below said concrete storm
sewer.
The grade of the concrete storm
sewers hereinbefore mentioned,
connecting the segment block
storm sewers, shall be the same
grade as the segment block sewers
at said points of connection as
grades are hereinbefore fixed and
with a uniform grade between said
points.
| All elevations herein given are
figured from city datum plane fixed
by an ordinance passed by the city
council OF the City OF East Moline,
ILL.,. Sept. s, A. d. 1911.
! 1. There is a total of eighty
seven 1877 lineal feet of open ditch,
ten f1oD feet wide at the bottom
with one to one side slopes and an
average cut of 3.3 feet to flow line.
Which l estimate at SSH per
, lineal fooot, $44457.
,. Two l2l wingwalls extending
from the upper end of last describ-
ed section of ditch sixteen 49,
, feet, said wingwalls shall be ten
/ tl0) feet apart at flow line at point
d, of commencement and seven ca
| feet apart at flow line at the upper
end. Walls are eighteen t1S) inch
es thick at the base and twelve
! (12) inches thick at the top, with
uniform height of eight (S) feet
above flow line and extending down
one III foot below the flow line;
wingwalls to be connected at upper
ends by a header wall, the entire
height of said vingwalls twelve
12) inches thick enclosing sewer
at upper end; IA cubic yards of
concrete.
Which l estimate as follows:
Cement used in making concrete
| for the construction of said wing
walls and header wall. s7o.53
Sand used in making said con-
crete for the construction of said
wingwalls and header walls. ST SO.
Gravel used in making said con-
crete for the construction of said
| wingwalls and header wall, $39.7S.
Necessary labor for mixing and
putting said concrete in place for
the construction Of said wingwalls
and header wall, $1,000.
Forms. including all labor and
materials necessary to construct
the same and put same in place for
the construction of said wingwalls
and header wall, sS105.
Labor of eXcavating for said
wingwalls and header wall and e4-
cayating between said Winngwalls,
including labor of bachfilling the
same. $4,000.
Total, s30s.S9
3. There is a total of eight hun
dred eighty $3.50 lineal feet Of
segment block storm sewer with an
eighty-four tS4 inch circular
opening and with an average cut
of 81 feet to flow line
Which / estimate as follows:
Segment block, including hauling
from car and distributing. labor of
laying and backfilling to spring line
and mortar for construction of
same at $3.50 per lineal foot, ST.
424.
Labor of excavating for said
eight hundred eighty t8s0l lineal
feet of segment block storm sewer.
including labor of backfilling the
same at $500 per lineal foot, S.
096. Total, $25,520.
4. There is total of ten I0)
lineal feet Of concrete storm sewer
with an eightyfour fS4l inch cir
Cular Onenine at the lower end and