DGSewerDetail7-11ALL STEP TANKS SHALL BE H-20 LOAD RATED TANKS.
THIS POLICY SHALL TAKE EFFECT ON MAY 31, 2007.
GRADE
21"0 MIN.PVC RISER I
WITH WATER TIGHT I
LIDS II
14 GAUGE TONING I
WRE TO SS C0~ ~
I
V-1 I I
I I
I
I
N I I
I I
4"OI OR FICE I
I I
i I ~
p ~ ~ ~
N I I
o V 2 I
~B AFFLE I
m (NOTE 1)
~ L--.-J
TIGHT LID
I~PUMP VAULT RISER
j 14 GAUGE TONING
I~WIRE TO SERVICE
I BOX
~ 1
I
2 PART USE ORCNO
TANK TO RISER
ADAPTER FOR
CONCRETE TANKS
PUMP ASSEMBLY, SEE
DWG. NO. 7-9
6" MIN BEDDING
1500 GAL 3000 GAL 4500 GAL
D-7 2 60" 72" 72"
D-2 2 43" 66" 55"
D-3 2 50" 62" 62"
V-1 400 GAL 600 GAL
V-2 1100 GAL 2400 GAL
NOTES:
1. DELETE BAFFLE FOR A 3000 GALLON TANK UTILIZED
AS A TRIPLEX PUMP VAULT.
2. THE OWNER WILL REVIEW TOLERANCES IN EXCESS OF
DIMENSIONS SHOWN.
3. THE TRIPLEX PUMP VAULT REQUIRES TWO VAULTS
AND TWO COMPLETE RISERS. ONE VAULT CONTAINS
FLOATS AND ONE PUMP. THE SECOND VAULT
CONTAINS TWO PUMPS.
4. 4500 GALLON TANKS OR LARGER SHALL HAVE
THREE RISERS AND LIDS.
ON ALL TANKS LARGER THAN 1500 GALLONS
THE LENGTH OF THE DOWN TURNED INLET PIPE
WILL BE DETERMINED BY THE YELM SEWER DEPT.
CITY OF YELM
DEPT. OF PUBLIC WORKS
1500, 3000, 4500 GALLON
STEP TANK/PUMP TANK
APPROVED DWG. NO.
PUBLIC WORKS DIRECTOR DATE
DES. DWN. CKD. DATE
JY JEG TP 4/2007