WB1988_42 EXTERI 3R `RESH WATER f�:l�S'" ?UCTION NOTES
SYSTEM
1 . Notify Tigard Water District prior to commencing
construction .
2 . All work shall be in accordance with A . W. W. A . standards .
3 : All work will be inspected and approved by TWD .
I pipe and fittings will be cement-lined . Pipe will be
_ tyton joint , ductile iron , Class 52 .
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5 . L i A-e hydrant assembly consists of 8 MJ x 6 Fl
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tome , fi" Flg x MJ gate valve , 6 " M." x NUJ holding spool , and
Modern Mueller Centurion fire hydr
�^ ant A-442 6" MJ , 5 1/4"
P f 2 - 2 1/2 " NS's' hose connections , 1 — 4 1/2 " NST
pumuer ; , 1 1 /2 " Pent Opr Nut , open left , color : yellow.
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tf fi • A.J L i L e • v n 'N t',1 i b
' hydrant hall be installed upon a pL e- for.m.eU'
concrete block with 1 1 / 2 cubic yards of crushed 1 1/2 "
drain rock . Tarpaper will be laid on top, of drain rock to 1z
-- separate rock from earth cover .
Poured 7 . concrete thrustblccks at least 8 s f '
�- q . L ee+ �� o L bearing
F surface at each tee , bend , and blow-off location .
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8 . 3E " of 3/4-inch minus gravel for all mains .
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F!E -,OPERATIONS
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#�" �'R1'R� C sewer� '^y � �^ 1 ine� ' 0 lateral and 3 ver a.L ly of
P, - water mains shall be encased in concrete 611thick 10 ' from
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crossing Where crossings are necessary ,
ecevvary , tieY
must be made
Ja+ aPprox4mate1Y 90 degrees with at 18 " separation OENC
below water line . I m
�VF�rAll mains shalt' be tested at 150 psi for 2 hour with a ; ,,J
:
maximum los of 5
psi . Static pressure = 70 psi .
(MAf4V ,
t�C .W Ant tom`° MJ ., on
� ;r �� �-..�., � � � mains shall be cleaned and flushed with potable water
a u' tPk, � -' � 1 p bacteriological testing in
r r to di ,� � nfection and
cc dance with A . W . W. A . standards . OSBH bacteriological
' 01 C5 5 s t s * 11 be taken by TWD .
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