HomeMy WebLinkAboutSEWER PLANT FILTER REPAIR - Filed SS-SANITARY SEWER - 2002-08-22■ .
Concrete
shall contain 6 1/2 sacks
Type II
or Type
IIA cement per cu. yd., a
slump
between
2 and 3 inches; at Air content
between
4 and 7% by volume, and a
28 day
compressive
strength of 3000 psi.
The
concrete
shall be spaded and/or vibrated
with suitable
tools to prevent the
formation
U
of voids
or honeycomb.
0
U
C
reforced conc. wall to v
be removed v
w
w
•v
conc. wall to be rebuilt
approx. 225 ft. n
v
L
U
O
t
The existing rebar, where satisfactory-, may
be used if the foreign material is removed.
If new reinforcement is used, it shall o
consist of 3/8" 0 rebar 2' o. c.8,shall be
anchored 4" into existing concrete with
either a satisfactory forced fit or grouted Q
in place with a non -shrinking grout.
Ground
surface
Exist1ng —
cold joint
1- 3/e ib ( lap all steel 12" )
6' v 1 < 3, 2„
The City will remove the spalled and
deteriorated portions of the existing concrete
wall; all repairs to the existing wall shall be
reinforced shotcrete. The existing rebar, where
satisfactory, may be used if the foreign material
is removed; if new reinforcement is used it
shall consist of 318" 6 rebar- WC C. each way
and shall be anchored 4" into the existing
concrete with either a satisfactory forced
fit or grouted in place with a non -shrinking
grout. All rebar shall be lapped 12'.'
Area to be Shotcreted
by contractor
2"x2" 11/11, or two layers of 4x2
12.5/12.5 (placed at right angles to one
another) of galvanized welded wire fabric.
'v
n795Denotes area to be Shotcreted `
by contractor.
?F : 4
Q 6" Existing conc.♦`slab -
3„ TYPICAL SECTION
CITY OF FORT COLLINS, COLORA DO I
LOW FI LT E R WALL REPAI R
SEWAGE TREATMENT PLANT NO. 1.
DESIGNED' -
DRAWN:
J.P.H.
In the sections where the wall abuts
the natural ground the shotcrete shall
be applied to a depth at least 6" below
the natural ground.
6to
'
Ground 32"
surface
lab
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CITY OF FORT COLLINS COLORADO
DESIGNED', DRAWN:
FILTER REPAIR DFB. J.R.H.
SC ALE
SEWAGE TREATMENT PLANT N0.1. 1"=10"
Jl.. FHLC
C 3 r- 10"
C3-
D-4 I�