HomeMy WebLinkAboutWTR2703161.30
M
J
in
0
a
w
LE
X
0
0
Lii
M
t`
z
J
u_
J
=
U
2 =
-a
= W (=
z
� o
ZW
O iZ
z
a
=
o
=
N
N
ElW
v�i
z
v,
o
o
v
g
11
Q
O
O
O
LLJ
r
do
Q�
m
0
>
In Ll.I
z ry
0
a
U
Q O
tZ
m J
f-
Cn
a L (nn
f X
eee�
FLUSH WITH FINISH GRADE
(TYPICAL)
UNION (TYPICAL)
30' MIN.
t
4
TO CITY METER
F-1
TAPPING TEE (MJxFL)
TAPPING GATE VALVE (FL XMJ)
TEMPORARY PLUG (MJ) WITH 2-INCH TAP
AND 2-INCH BLOW -OFF ASSEMBLY
CONCRETE BLOCKING
PORTION OF THE S.W. 1/4, OF SEC. 3, TWN 23 N., RGE 5 :., W.M.
CITY OF RENTON, WASHINGTON
12"-16"
CLEARANCE
FOR 3/4" TO 2" DCVA, USE FOGTITE CONCRETE METER
BOX NO. 2T (17"x28") WITH 3/8" STEEL COVER PLATE
METER BOX SHALL BE DOUBLE STACKED.
FOR 2-1 /2" TO 3" DCVA, USE UTILITY VAULT CO. MODEL
25TA OR EQUAL.
30" MIN.
AFTER TESTING & APPROVAL, PLUG ALL
TEST COCKS WITH BRASS PLUGS.
0 TO PRIVATE SYSTEM
AFTER FIELD INSTALLATION, DCVA MUST BE
TESTED SATISFACTORILY BY A DEPARTMENT
OF HEALTH CERTIFIED BACKFLOW ASSEMBLY
TESTER.
7/8" MINUS GRAVEL 12" MINIMUM TEST REPORT MUST BE SUBMITTED TO CITY
OF RENTON WATER UTILITY ENGINEERING
PRIOR TO ACTIVATION OF NEW LINE.
BELOW GROUND INSTALLATION FOR 3/4" TO 3" DOUBLE
CHECK VALVE ASSEMBLIES
2" BEEHIVE STRAINER f 2" OPEN PATTERN, RETURN BEND
2" GALVANIZED IRON PIPE FIELD LOCATE
CUT OPENING AS REQUIRED, 1" CLOSE NIPPLE 17"x28" CONCRETE METER BOX WITH 3/8" STEEL DIAMOND
AFTER INSTALLATION, GROUT 18" 1" UNION 6" MAX. PLATE COVER EQUAL TO FOG-TITE METER SEAL CO. NO.2
AROUND PIPE. 1" NIPPLE METER BOX. FIELD LOCATE.
1" UNION
2"x 2"x 1" TEE, 1" CLOSE
NIPPLE BETWEEN TEE & BEND.
1" 90' ELBOW - 1" BRONZE GATE VALVE, SCREW EQUAL TO RED -WHITE VALVE CORP. FIG NO.280
Z" GALVANIZED IRON PIPE ` COUPLING COPPER TO MALE IRON PIPE -FORD C28-44 OR EQUAL.
18" LONG o
6 o ° 0 0°0 0 1" TYPE "K" SOFT COPPER TUBING
12" MIN. o°off°g00� o o 0 0 0 0° 1" IRON PIPE THREAD CORPORATION STOP WITH
o 0 8o °o �0 �� 90' BEND FOR COPPER. FORD TYPE F1000 PACK
Jo moo do .0 0,.o.oa
JOINT CTS.
1" GALVANIZED IRON
PIPE TO FIT
2" CAP WITH 1/8" HOLE 1" 90' ELBOW
FOR DRAIN.
1" COMBINATION AIR RELEASE & VACUUM VALVE,
WASHED GRAVEL, PASSING SCREWED. APCO NO. 143C OR EQUAL.
1-1/2" AND RETAINED ON 1/4" MESH FOR DRAIN
NOTE:
AIR AND VACUUM RELEASE VALVE ASSEMBLY SHALL BE INSTALLED
AT HIGHEST POINT OF LINE. IF HIGH POINT FALLS IN A LOCATION
WHERE ASSEMBLY CANNOT BE INSTALLED, PROVIDE ADDITIONAL DEPTH
OF LINE TO CREATE A HIGH POINT AT A LOCATION WHERE ASSEMBLY
CAN BE INSTALLED.
1" AIR & VACUUM RELEASE VALVE ASSEMBLY
TESTING DETAIL
J. n cr
NEW D.I. WATER LINE
VERTICAL CROSS(MJXFL) FOR POLYPIGGING
1-BLIND FLANGE ON TOP WITH 2" TAP AND 2" PLUG
1-BLIND FLANGE ON BOTTOM
1-PLUG(MJ) WITH 2"TAP & 2" BLOW -OFF
TEMPORARY BLOCK
DOUDLE STRAP SERVICE CLAMP WITH
1" IPS TAP TO FIT, EQUAL TO MEULLER CO.
FINAL CONNECTION DETAIL
�- - TEMPORARY 2"
GALVANIZED PIPE AND 2"
FINISHED GRADE ELEVATION GATE VALVE
INSTALL 2" PLUG ON TOP
BLIND FLANGE AFTER
REMOVAL OF POLYPIG
3 FT MIN. COVER (10-INCH DIAMETER AND UNDER)
4 FT MIN. COVER (12-INCH DIAMETER AND OVER)
NE7) __ER MAIN
POLYPIG • - n
s- - -�- • -
VERTICAL CROSS FOR POLYPIGGING STATION:
SIZE OF VERTICAL CROSS SHALL BE THE SAME AS SIZE OF MAIN LINE
VERTICAL CROSS (MJxFL)
ONE BLIND FLANGE ON TOP OF CROSS WITH 2" TAP AND 2" TEMPORARY
BLOW -OFF ASSEMBLY
(REMOVE BLOW -OFF ASSEMBLY AND INSTALL 2' PLUG AFTER REMOVAL OF
CLEANING "POLY -PIG')
ONE BLIND FLANGE ON BOTOM OF CROSS
ONE PLUG (MJ) ON END OF CROSS
CONCRETE BLOCKING
ALL DEBRIS AND POLYPIGS SHALL BE REMOVED FROM SUMP OF VERTICAL
CROSS BEFORE DISINFECTION OF NEW WATER MAIN
WATER MAIN POLYPIGGING STATION
VERTICAL CROSS FOR POLYPIGGING
NEW D.I. WATER LINE
AFTER ALL CLEANING BY POLYPIG, PRESSURE TESTING
AND DISINFECTION, REMOVE TEMPORAY BLOCK & BLOW -OFF
AND CONNECT TO VALVE WITH D.I. SLEEVE (MJ) & D.I. SPOOLS
FINAL CONNECTION BY CITY FORCES
NOTES: 5. CONTRACTOR SHALL POTHOLE AND VERIFY THE
1. TAPPING TEES SHALL BE MADE OF DUCTILE IRON OR EPDXY- HORIZONTAL AND VERTICAL ALIGNMENT OF EX/STING LINE
COATED STEEL. OR STUB AND SHALL START LAYING THE NEW LINE AT
2. NO SIZE ON SIZE TAPS ON CAST-IRON WATER LINES. THE SAME HORIZONTAL AND VERTICAL ALIGNMENT OF THE
TAP SHALL BE AT LEAST 2" SMALLER DIAMETER THAN THE EX/STING MAIN. EXISTING STUB.
3. NO WET TAP ON ASBESTOS CEMENT LINE OR STEEL LINE CITY FORCES WILL PERFORM THE FINAL CONNECTION
4. WET -TAP SHALL BE DONE ONLY BY CITY -APPROVED CONTRACTORS FROM THE WATER LINE TO THE TAPPING VALVE WITH D.I.
SLEEVE AND D.I. SPOOL
WATER CONNECTION DETAIL
WET -TAP EXISTING WATER MAIN
WATER MAIN
2" CLOSE NIPPLE
2" 90' ELBOW
TWO PIECE CAST IRON VALVE BOX
EQUAL TO RICH VALVE CO. STANDARD
8" TOP SECTION, WITH REGULAR BASE
SECTION LENGTH TO FIT.
2" GALVANIZED IRON PIPE 12" LONG
CONCRETE BLOCKING SIZING PROCEDURE
A. GENERAL
The amount of concrete required to anchor horizontal
bends, tees, and dead ends depends on the strength
of the soil. The methods of placing concrete to keep
the joint accessible is shown in Figure 1. The area
in square feet of concrete which must bear against
the side of the trench is found by dividing the
thrust in pounds shown in Table 1 by the safe
bea___ ri�g_lood of the soil as shown in Table 2.
B. �BL�6I9
1. The sizing procedure is for horizontal or
downward thrust only.
2. Height of the thrust block must be equal
to or less than 1/2 the depth from the ground
surface to the block base.
3. The thrust block bearing face is approximately
rectangular.
4. The concrete blocking shall be as per APWA
SYMB6LScification 74-2.N.
C.
d = Outside Diameter of Pipe in Feet
T = Thrust in Pounds at the Fitting (Table 1)
SBL = Safe Bearing Load in Pounds/Sq. Ft. (Table 2)
h = Depth of Trench in Feet
W = Width of Trench in Feet
A = Area of Concrete which must bear against the
Side of the Trench in Sq. Ft.
Hm = Maximum Height of the Thrust Block in feet
Dc = Depth of the Concrete Thrust Block
to Bearing Surface in Feet
Lm = Maximum Length of the Thrust Block in Feet
GROUND SUFACE
h " d
Hm= 2 +
BLOCK BASE
DC
W-
D. CALCULATION EQUATIONS
1. Area of Concrete (A) = Thrust (in Pounds _ T
Safe Bearing Load (in Pounds/Sq. Ft.) SBL
2. Maximum Height of Thrust Block (Hm) = Depth of Trench in Feet - h
2 - 2
(Width of Trench in Feet) -
3. Depth of Concrete Thrust Block = Outside Diameter of Pipe in Feet) - W-d
2 2
4. Maximum Length of Thrust Block (Lm) = Area of Concrete - A
Maximum Height Hm
5. Required Amount of Concrete (Cu. Yd.) = (Height x Depth x Length) x 0.03704
= (Hm x Lm x Dc) x 0.03704
E. EXAMPLE
1. Problem:
Calculation of the amount of concrete required to block a 90' bend in an 8"
C.I. water main; the normal operating pressure in the pipe will be 65 psi and the soil
condition in the area indicates sand and gravel.
2. Solution:
- Maximum testing pressure (See Table 1) = 300 psi. = 0.75 ft.
- Outside diameter of 8 pipe = 9.05 in. = 9.05/12
- Go to Table 1: The testing pressure of 300 psi, we see
that the thrust on a 90' bend is 21,360 pounds.
CONCRETE DEAD MAN BLOCKING WITH SHACKLE RODS TO CAP,
BLOCK SHALL BE POURED AGAINST UNDISTURBED EARTH,
SIZE OF BLOCK TO BE DETERMINED BASED ON TEST
PRESSURE OF WATER LINE AND SOIL CHARACTERISTICS.
CAST IRON CAP OR PLUG WITH 2"
IPS TAP SHALL BE A ROCKWELL
482 END CAP COUPLING.
2" GALVANIZED IRON PIPE
AS REQUIRED.
2" GALVANIZED IRON PIPE, 12" LONG.
PLAN
VALVE NUT EXTENSION IF REQUIRED
(SEE DWG BR46 / PAGE B090)
INSTALL 2" 90' ELBOW, SCREWED
2" PLUG, SCREWED
- 18'
2" GALVANIZED IRON PIPE
AS REQUIRED.
2" GATE VALVE,
SCREWED i- INSTALL 2" 90' ELBOW, SCREWED
2" GALVANIZED IRON PIPE
AS REQUIRED.
ELEVATION
TEMPORARY 2" BLOWOFF ASSEMBLY
- Go to Table 2: Table 2 gives the safe bearing load for
sand and gravel: 3,000 lbs./sq. ft.
- Go to Figure 1: figure 1 indicates the position
of the concrete for blocking the 90' bend.
- Go to the specifications of the project and find
depth of trench (h) = 4 feet
- Width of trench 3 feet
With the above assembled information,
we proceed to the final calculations:
- Area of Concrete (A) = Thrust = 21.3fi0 = 7.12 sq ft.
Safe Bearing Load 3,000
- Maximum Height of Thrust Block (Hm) = Depth of Trench in Feet
2
= h _ 4 = 2.0 ft.
2 2
- Depth of Concrete Thrust Block (Dc)
Width of Trench in Feet (W) - Outside Diameter of Pipe (d)
2
= 3- 0.75 = 1.13ft.
2
- Maximum Length of Thrust Block (Lm) = Area of Concrete
Height of Concrete
= A __ 7.12 = 3.56 ft.
Hm 2.0
- Required Amount of Concrete = (Height x Depth x Length) x 0.03704
= (Hm x Lm x Dc) x 0.03704
= (2.0 x 3.56 x 1.13) x 0.03704
= 0.30 cu. yd.
TABLE 1
Size
Pressure
PSI
Thrust at Fittings in Pounds
Tees
90'
45'
22-1/2
11-1/4
Dead Ends
Bend
Bend
Bend
Bend
3"
300
2,120
3,000
1.630
830
430
4"
300
3,780
5,370
2,910
1,470
750
6"
300
8,500
12,000
6,510
3,320
1,700
8"
300
15,100
21,360
11,550
5,880
3,020
10:
275
21,620
30.570
16,540
8,430
4,330
12"
250
33,930
48,000
25.950
13,260
6,780
14"
250
46,200
65,370
35,340
18,030
9,240
16
225
45,250
64,000
34,620
17,650
9,050
18"
200
50,900
72,000
38,940
19.860
10,180
20
200
62,840
88,900
48,080
24.520
12.560
24"
200
90,480
127,980
69,200
35,320
18,100
30"
200
141.370
199,960
108,150
55,140
28,280
36'
200
203.580
287,950
155.740
79,400
40,720
TABLE 2
Safe Bearing Loads in Lb./Sa. Ft.
The safe bearing loods given in the following table are for
horizontal thrusts when the depth of cover over the pipe
exceeds 2 feet.
Safe Bearing Load
SQL Lb. per Sq. Ft.
*Muck, peat, etc. 0
Soft Clay 1,000
Sand 2,000
Sand and Gravel 3,000
Sand and Gravel Cemented with Clay 4,000
Hord Shale 10,000
*In muck or peat, all thrusts shall be restrained by piles or
tie rods to solid foundations or by removal of muck
or eat and replacement with ballast of sufficient
stability to resist thrusts.
Call07NOTE:
Or 0
before you EXISTING UTILITY LOCATIONS SHOWN HEREON ARE APPROXIMATE ONLY.
t133 Digs IT SHALL BE THE CONTRACTOR'S RESPONSIBILITY TO DETERMINE THE
STF EXACT VERTICAL AND HORIZONTAL LOCATION OF ALL EXISTING UNDER-
SSIONAL� 1_800_424-5555 GROUND UTILITIES PRIOR TO COMMENCING CONSTRUCTION. NO
REPRESENTATION IS MADE THAT ALL EXISTING UTILITIES ARE SHOWN
EXPIRES 11/30/04 UNDERGROUND SERVICE (USA) HEREON. THE ENGINEER ASSUMES NO RESPONSIBILITY FOR UTILITIES
AVOID CUTTING UNDERGROUND NOT SHOWN OR UTILITIES NOT SHOWN IN THEIR PROPER LOCATION.
UTILITY LINES. IT'S COSTLY CALL BEFORE YOU DIG: 1-800-424-5555.
SCANNED MAY 0 12006 14P e`��^'�'
o
._Ed&
=r
CAP
22-1/2-
TE E
45°BEND
FIGURE 1
90 BEND
NOTE: FOR CONVEX VERTICAL BENDS BLOCKING
SEE APWA STANDARD PLAN NO. 73.
CONCRETE BLOCKING SIZING PROCEDURE
Y p ADOPTED
CITY OF RENTON
♦ I♦
STANDARD PLANS
LST DATE: 12/96
DWG. NAME: BR26 SP PAGE: B085
CHECKED FOR COMPLIANCE RECOMMENDED
TO CITY STANDARDS FOR APPROVAL
DATE BY
DATE BY
DATE BY
BAXTER M EADOWS
DETAILS & NOTES
SCANNED 0 0T OR
DATE:
3/11/03
FIELDSOOK:
PAGE:
DRAWING NO-
75-141-WA
SHEET: OF:
8 9