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CONCRETE BLOCKING SIZING PROCEDURE
A. GENERAL
The am unt of concrete req,ir,d to anchor horizontal
bends, tees, and dead ends depends on the siren gth
of the saiL The methods of placing concrete to keep
the 'oink a saible ie sh F' igur e 1. Tne a
e feet of c crete hi h m iv bear
uessud® or the trench ie N,�ne by dividing the
ans
thrust in pounds hewn in Table 1 by the sale
CRI rI R�Aload of the sell as shown In Table 2.
B 1. The s" ..dune is for horizontal or
,or--.f the th only.
2. Heioht f the thrust black " be equal
to r less than block
the depth from the ground
rf._ to the block base.
3. The thrust block bearing face ie approximately
atan
4. The to block ngg shall be as per APWA
S V19caton 74 2.14.
c. svMeBis
d - Outside Diameter of Pipe in Feet
T = Thrust in Pounds at the Fittingg (Table 1)
SBL = Safe Bearing Load in Pounds/Sq. Ft. (Table 2)
In = Depth of Trench in Feet
W = Width of Trench In Feet
A = Area of Concrete which must bear against the
Side of the Trench 1 Sq. Ft.
Hm = Maximum Height of the Thrust Block in feet
Do = Depth of the Concrete Thrust Block
to Bearing Surface it Feet
Lm = Maximum Length of the Thrust Block in Feet
GROUND SUFACE
d
Hm= h 2
BLOCK BASE -
IWD
0. CALCULATION EQUATIONS
1. Area of Concrete (A) = Thrust (In Pounds T
Safe Bearing Load (In Pounds/Sq. Ft.)
2. Mazimum Height of Thrust Black (Hen) m Depth of Trench in Feet - h
2 - 2
Width of Trench in Feet) -
Outside Diameter of Pipe in Feet) W-d
3. Depth of Concrete Thrust Block = 2 = 2
4. Maximum Length of Thrust Block (Lm) = Area of Concrete _ A
Maximum Height Hen
5. Required Amount of Concrete (Cu. Yd.) _ (Height x Depth x Length) x 0.03704
_ (Hm x Lre x Do) 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
ondition in the area indicates sand and gravel.
2. Solution
- Maximum testing pressure (See Table 1) = 300 pp i = 0.75 TL
p
Outside diameter f 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' bed Is 21,360 pounds.
- Go to Table 2: Table 2 s the safe be
aring load for
Sire 9
ntl and gravel: 3,OD0 be
ft
- Go to Fipgune 1: fgure 1 indicates the position
f the can here
for blocking the 90• bend.
- Go to the speclflcatlons of the pro0at and find
dspth of trench (hj = 4 feet
- Width or trench (y✓1 - 3 feet
With the above assembled informatio
n,
we proceed to the final calculations:
- Area of Concrete (A) Thrust = 21,360 = 712 sq fit.
Safe Bearing Load 3,000
- Maximum Height of Thrust Block (Hen) = Depth of Trench in Feel
2
- h 4 a2.0 ft.
2 = 2
Depth of Concrete Thrust Black (Do)
- Widen of Trench in Feet (W) - Outside Diameter of Pipe (d)
2
= 3- 0.75 = 1.13 ft'
2
- Maximum Length of Thrust Block (Lm) = Area of Concrete
Height of Coronets
A
Her 2.0
- Required Amount of Concrete = (Height x Depth x Length) x 0.03704
(Hm x Lm z Do)
D03704
(2.0 x 3.56 x 1.13) x 0.03704
0.30 cu ytl.
Size
Pressure
PSI
Thrust at Fitting. 'n Pounds
Tees
90'
45
22-i/2
IT-14'
Dead Ends
Bend
Bend
Bend
Bend
7'•
3DO
2,120
3,000
1,630
830
430
4"
300
3,780
5,370
2.910
1,470
750
S.
300
8,500
12,000
6,510
3,320
1,700
8"
10"
300
275
15,100
21,620
21,360
30,570
11,550
16,540
5,880
8,430
3.020
4.330
12"
250
33,930
48,000
25,950
13,260
6,780
14"
250
46.200
65,370
35,34D
18,030
9,240
16'
18'
225
200
45,250
50,900
64,000
72,000
34,62D
3B,94D
17,6So
19,860
9,050
10,180
20:
200
62.840
88,900
48,060
24,520
12,560
24
200
90,480
127,150
89,200
35.320
18,100
30'
36°
200
200
141,370
203,580
,99,960
287,950
108,15D
155,740
55,140
79,400
28.280
40.720
TABLE 2
Safe Bearing Loads in Lb./Sp.
Ft.
The safe bearing lauds q in the following
table are far
harizpntol thrusts when t'hendepth of cover over the pipe
o
exceeds 2 feet.
Safe Bearing Load
SOIL
Lb. per So. Ft.
'Muck, peat, etc.
0
Son Cloy
1,00Send 0
Sand and Gravel
3,D00
Sand and Gravel Cemented with Clay
Hard Shale
4,000
10.000
Mn muck or peat, all thrusts shall be restrained by piles or
tie ads to solid foundations or 6y removal of lull
pp t ntl replacement with ballast of sufflaT-t
stab,lty to resist thrusts.
PORTION OF THE SE 1/4, SE 1/4 SEC. 19, TWP. 23N, RGE. 5E, W.M.
7.
CAP
22-1/2a
45aBEND
TEE
11-1/4 90 BEND
FIGURE 1
NOTE: FOR CONVEX VERTICAL BENDS BLOCKING
SEE APWA STANDARD PLAN NO. 73.
CONCRETE BLOCKING SIMNG PROCEDURE
titY.O
ADOPTED
�i
crfi of RENTON
/}
STANDARD PLNB
N
L9'1' DATZ: 12/96
DWG. NAME: BR26 SP PAGE: B085
CONCRETFI BLOCKING SIZING PROCEDURE
12"x 22" CONCRETE METER
BOX WITH 3/16" STEEL DIAMOND PLATE
COVER EQUAL TO FOG TITE METER
SEAL CO. B-10 METER BOX.
6" MIN
FINISH GRADE 9" MAX
9„
' 21" MIN
COVER
36" MIN COVER I
2-1 /2'
w IN UNIMPROVED RIGHT OF WAY w
Z INSTALL METER BOX AT
PROPERTY LINE.
a
Of
SIDEWALK
0-
i r
WATER METER TO BE
12" MIN
SUPPLIED BY THE CITY
36" MIN
COVER
_
TYPE "K"
COPPER
SOFT
TUBING
FORD COPPERSETTER
NEW DUCTILE IRON LOOP DOWN TO CENTERLINE VH 72-15W-44-33G (FOR 5/8" x 3/4" METER)
VH 72-15W-44-44G (FOR 1" METER)
WATERMAIN OF WATER MAIN TO PROVIDE BOTH INLET AND OUTLET WITH PACK JOINT WITH GRIPPER.
SLACK IN COPPER SERVICE PADLOCK WINGS ON KEY VALVE SINGLE CHECK VALVE
LINE TO METER. ON OUTLET.
CORPORATION STOP. FORD TAPERED ALL PACK -JOINT FITTINGS SHALL BE WITH GRIPPER.
7
THREAD (CC). PACK JOINT (3/4" F1000)
(1" F1000) IF SERVICE LINE TO HOUSE IS TO BE
INSTALLED IN THE FUTURE INSTALL
FORD C14-33 OR 44
22-1/2' FIDT x COMPRESSION COUPLING
3/4" OR 1" GALVANIZED PLUG
FOR SERVICE FROM EXISTING STEEL
EXISTING CAST IRON ASBESTOS CEMENT OR PVC WATER MAINS
OR DUCTILE IRON INSTALL DOUBLE STRAP SERVICE CLAMP
WATERMAIN EQUAL TO MUELLER CO.
3/4° & 1" WATER SERVICE
tiCY_p ADOPTED
Cr ff OF ROMN
RfANDARD PLAW
IST DATZ:12/96
Edited text. DCV AG
R�s�o��Pj DWG. NAME: BR41 SP PAGE: 8106�pR DWG. NAME: BR41 SP PAGE: B106
3/40 & 1" WATER SERVICE
SEE PLAN FOR LOCATION OF ACCESS MANHOLE COVER
PLASTER SMOOTH INSIDE AND OUTSIDE FACING
OF ADJUSTMENT RINGS WITH 1/2" THICKNESS -�
OF GROUT.
SAFETY STEP
AND LADDER
CONCRETE
SUPPORT PAD
ELEVATION
VAULT
PLAN
MANHOLE RING AND COVER TO BE 25" (TRAFFIC TYPE)
CLEAN OPENING INLAND TO EQUAL FOUNDRY I Q DLDS IF. 71
WITH SOLID LID EXCEPT FOR ONE 7/8" DIA. LIFT HOLE
8" FROM CENTER. COVER SHALL HAVE WORDING "WATER".
- 3"MIN. - 12"MAX CONCRETE LEVELING BRICK
OR PRECAST RINGS.
48" x 25" OFFSET CONE SECTION 19" HIGH
FOR VALVE CHAMBER EQUAL TO PIPE INC.
CITY OF SEATTLE DESIGN.
48" I.D. BASE SECTION WITH CUTOUTS TO MATCH
RISER SECTION FOR 12" WATER MAIN EQUAL TO
PIPE INC.
COMPACTED FOUNDATION GRAVEL
ELEVATION
^" AND TAP 12" DUCTILE IRON
ND INSTALL 1" (FORD CORP.
-1000 90' ELL #L44-44(CCxIP).
-INSTALL EPDXY NON -SHRINK AND WATER
TIGHT GROUT (TYP.)
CONCRETE SUPPORT PAD
12" GATE VALVE INSTALLATION
(WITH BY PASS ASSEMBLY - 1")
rtY__p ADOPTED
CITY OF
+ tl STANDARD PLAM
ISf DATY: 12/96
DWG. NAME: BR48 SP PAGE: B091
1L" GATE VALVE INSTALLATION
(WITH BY PASS ASSEMBLY - 1")
3/4" SQUARES SPACED - 3/4"
AS INDICATED - HT. 1/8"
�1/2"
-1"
RAISE-1 /2"
WIDE BORDER
11n"
CAST IRON RING AND COVER
NOTE:
IN UNIMPROVED AREAS POUR V-0" THICK
2'-0" SQUARE CONCRETE, CLASS 3000, PAD AROUND
RING AND COVER.
IN ASPHALT ROADWAYS RESTORE AROUND CLEANOUT RING
AND COVER AS REQUIRED BY STANDARD DETAIL DRAWING BR36.
10/17/96 Added notes.
��
± 8 FT NEW 8"
WATERLINE
SEE NOTES
0 0
o p e
r,
CONCRETE
CLASS 3000
3/4„
12"0
FIBER
PACKII`
45' (1 /8)
PIPE MATERIAL AS SPECIFIED
BY THE ENGINEER
II I PLUG TO BE SEALED
IN SAME MANNER AS
-- _- MAIN SEWER JOINTS.
6 INCH OR 8 INCH CLEAN -OUT
�SY p ADOPTED
"A G417 OF B�r1ON
♦ I BfANDARD PUNS
IST DAT=: 12/95
D"pg DWG. NAME: BW18B SP PAGE: B076
I
6 INCH OR 8 INCH CLEAN -OUT
CONTRACTOR TO FIELD
VERIFY LOCATION OF EX.
8" WATER STUB AND VERTICAL CROSS (MJxFL) FOR POLYPIGGING
CONNECT AND ALIGN WATER LINE ACCORDINGLY ONE BLIND FLANGE ON TOP WITH 2"TAP & 2"PLUG
ONE BLIND FLANGE ON BOTTOM
ONE (MJ) PLUG WITH 2" TAP & 2" TEMPORARY BLOW -OFF
TEMPORARY BLOCK
TESTING DETAIL
(BEFORE)
CONNECTION AT S. 218t STREET
N.T.S.
A I CIA/ 8"
RLINE
NOTES
FIRE HYDRANT SHALL BE COREY-TYPE EQUAL TO IOWA F-5110
OR COMPRESSION TYPE SUCH AS CLOW MEDALLION' M & H 929
AND MUELLER SUPER CENTURION 200 WITH 6" MECHANICAL JOINT
INLET WITH LUGS.
5-1 4" MAIN VALVE OPENING. T -1 " H CONNECTIONS
WO 2 2 HOSE
NATIONAL STANDARD THREADS. 4" PUMPER CONNECTION CITY OF
SEATTLE THREADS WITH A STORTZ ADAPTOR, 4' SEATTLE THREAD
X 5" STORTZ ATTACHED WITH 1 8" STAINLESS STEEL CABLE.
1-1/4" PENTAGON OPERATING NUT, FIRE HYDRANT TO BE
PAINTED WITH TWO COATS OF PAINT. PRESERVATIVE
PAINT No. 43-655 SAFETY YELLOW OR APPROVED EQUAL.
PUMPER CONNECTION TO FACE ROADWAY ASSEMBLY.
FIRE HYDRANT EXTENSION TO BE USED IF REQUIRED.
18 " TO 20' BEHIND BACK OF CURB
OR 12" BEHIND BACK OF SIDEWALK
THAT IS ADJACENT TO CURB
EC T PI E CAST IRON VALVE BOX WITH LUG TYPE COVER.
WO
EQUAL TO OLYMPIC FOUNDRY CO. STANDARD B TOP SECTION WITH
REGULAR BASE SECTION LENGTH TO FIT. VALVE NUT EXTENSION
AS REQUIRED (SEE DWG BR46 / PAGE B090).
MAX 4"
MIN 2 RAISED PAVEMENT MARKER TYPE 88 AB
STIMSONITE TWO-WAY BLUE.
42" MIN CONCRETE BLOCKING
BURY
CONCRETE BLOCKING
CAST IRON TEE. WITH 6" FLANGE SIDE OUTLET.
N\ 6" GATE VALVE (FL X MJ) AWWA C-509, RESILIENT SEAT
6" DUCTILE IRON PIPE, CLASS 52 CEMENT LINED, LENGTH TO FIT TWO 3/4"
STEEL TIE RODS. SEE STD DETAIL FOR TIE RODS.
15" x B" x 4" MININUM
CONCRETE BLOCK
LEVEL ALL GROUND UNDER HYDRANT 1/3 CU. YD. WASHED DRAIN ROCK (Y TO 3/8")
MIN 3' RADIUS FIRE HYDRANT ASSEMBLY
LEVEL ALL GROUND
1 5" STORTZ MIN 3' RADIUS
�6' 1
1
ONE MAN ROCK
_ 6
CUT
BY POLYPIG,
AND U151NFEUIIUN, KEMUVE TEMP. BLOCK
AND BLOW -OFF & CONNECT WITH SLEEVE
(MJ) & D.I. SPOOLS FINAL CONNECTION
BY CITY FORCES
FINAL CONNECTION DETAIL
(AFTER)
FILL FIRE HYDRANT ASSEMBLY DETAIL
HYDRANT LOCATION IN CUT OR FILL Y- O ADOPTED
V� �'� CR'Y OF 1M1'1@f
STANDARD P1A119
12/96 lAdd valve nut extension. Reformat to 11"x17"IDCVj DT N'1.� LOT DATi 12/96
5/18/95 1 Revised Pum er Port DCV DT
z 1s 9 corrected text &changed paint color RTMI DT IDWG. NAME: BR24 SP PAGE: 8102
DATE I REVISION IAPPR'11
FIRE HYDRANT ASSEMBLY DETAIL
ALL 90' TURNS SHALL
4" CLEANOUT WYE WITH
BE ACCOMPLISHED BY MEANS
NOTES:
45' BEND AND PLUG.
OF A WYE AND 4BEND.
z z
TWO 45' BENDS SHALL NOT
z
1. Prior toinstallation of a sanitary sewer connection,
a side-- sewer permit must be purchased from the City of
BE ACCEPTABLE.
Renton Public Works Department.
Of
ac,
2. Types of pipe and nttln gs that can be used for sanitary
sewers shall be opprowd by the Department cf Public Work
w'
Rubber or neoprene gaskets as specified by the menu faciur
O O'
O'
shall be used on joints.
HOUSE 0- HOUSE 0.
I
HOUSE 0-I HOUSE
3 A minimum grade of 2% (1/4" per foot) must be
maintain od with 4" pipe. In the event 2% grade
be maintained. The owner must grant a
•
ggrnot
ad. release to the City and than can nstall
6" pipe at a grade of 1%.
'
3 -0" MIN.
4 For spec Pon f 'de se er, call 24 hours
Inspection
277 5570. S•te must be ready for inspection
BEND AS REQUIRED
4" SEWER PIPE
(TYPICAL)
and represent, site non inspector
eaves at appointed tme Sde sewer and stub
(ENO MORE THAN 45' BEND
EVERY 2ND CHANGE IN ) 4" SURFACE
4" SEWER PIPE, SEE NOTES 2 AND 3.
shall be tested per City specifications.
DIRECTION OR GRADE WILL h CLEANOUT
REQUIRE A SURFACE WYE
4" TEST TEE WITH MINIMUM LINE SIZE FOR OTHER THAN
Make the connection at the house. Do not backfill
the ditch until approval gl is given the inspector.
CLEANOUT WYE.
PLUG FACE UP SINGLE FAMILY 1S 6"
after existing
Final approval will granted after the
4" CLEANOUT
(TYPICAL)
lied
septic tank has been pumped out and filled with sand.
been
PROPERTY LINE I WYE WITH PLUG
PROPERTY LINE
5. Hell sde sewer with 2 minimum o cover 16"
io Lio ua 'I�
6' MIN.
m
ip
4" REDUCER c2
cover is allowed at the house f outlet is shollow.
a,'
z z zi
(TYPICAL) z
(TYPICAL)
6. If side sewer stub is not available. The owner shall
- -
N in
-
in
be responsible for is inst_allot on_ The side sewer
on
w MAIN SEWER LINE w __ -� w'.
-
w_
ay."ailblebe •the mammseweof s Inesze If tee p not
twth mapped
_ - - L
thru a cast ran saddle. All work
TYPICAL BUILDING SEWER
INSTALLATION PLAN
street right-of-way shall be done by a licensed
and banded contractor.
OIL PIPE
Z
=flRx
2 IF THE BUILDING SEWER SERVES ANY FIXTURE
7. All work shall be accomplished in accordance
with the Washngton Industr0l Safety and
psiALDER COUPLING
b QUAL TO FITI
HAVING FLOOD LEVEL RIMS LOCATED BELOW THE
Health Act. (WISHA)
-Z 2U3nACE CLEANOUT
ELEVATION OF THE NEXT UPSTREAM MANHOLE COVER
CD OF THE PUBLIC SEWER SYSTEM, A BACKFLOW PREVENTIONright-af-way
8. All trench restoration for side sewers in the public
shall contorm to the most current trench
as shown on dwg. pHR-23.I7
74"x4" WYE 'b
DEVICE SHALL BE INSTALLED EQUAL TO TYPER 2-84.
restoraton requirements
9
All build
sewer and side sewers shall hoverbedding
Z39.
in
in aceordonce with drawing BW1BC oPIPING
BR09 as applicable.4"
4" TEST TEE10
CALDER COUPLING4"x
OR EQUAL TO FIT
There snarl he a m n mum 10 foot hor zontalseperation
be c
E UP AND PLUGGED
between scl sde sewers and water sery cos and o
NIPPLE
SURFACE CLEANOUTWXIN
mnimum 5 foot horzontal seperation between sanitary side
4" REDUCER
4"x 4"x4" WYEsewers
and all other ui'I t es
WCOUPLING TO FIT
4" PIPING
6" PIPEPLANz OVE 2"x4" STUD AND CAP OR PLUG
- TYPICAL BUILDING SEVER
ON END OR EXISTING 6" SEWER PIPE.
BUILDING DRAIN
FOR LOW HOUSE
SIDE SEWER (PROPERTY LINE
n AND INSTALL BUILDING SEWER COUPLINGS,
o REDUCER. TEES. AND BENDS AS REQUIRED.
TO BUILDING CONNECTION
I�
M71 LJ iE
INSTALLATION PLAN
W ---SEE SIDE SEWER DETAIL
Z
7 l� 6" TO 6'-0"
.r♦"tY p ADOPTED
YOPIPING
BEND PROPERTY LINE
�+� CITY OF A<QiTON
_ 6" SIDE OUTLET TEE
g
7 `SEE NOTE 6 SEWER MAIN
CALL FOR LOCATIONS BEFORE YOU DIG
48HR LOCATORS 1-800-424-5555
♦.�
\ STANDARD PL09
05
T LOT DATE., 12/96
/ PLAN
BUILDING SEWER
IL- 11- INSTALLATION
110/17/961 Failed text I DCV I AC
Mid
DWG. NAME:BR35 SP PAG
oe SIDE SEWER (PROPERTY
LINE) -
TO BUILDING CONNECTION
INSTALLATION PLAN
NOTES:
CONTRACTOR SHALL POTHOLE AND VERIFY THE HORIZONTAL AND
VERTICAL ALIGNMENT OF EXISTING LINE OR STUB AND SHALL START
LAYING THE NEW LINE AT THE SAME HORIZONTAL AND VERTICAL
ALIGNMENT OF THE EXISTING STUB.
CITY FORCES WILL PERFORM THE FINAL CONNECTION FROM THE NEW
LINE TO THE EXISTING STUB WITH D.I. SLEEVE AND D.I. SPOOL
RECOMMENDED FOR APPROVAL
By: Date: gvm��
By: Date: Are
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SHEET 17
By: Date:
By: Date: OF 19
SCANNED OCT 2 8 2005
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