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<br /> � � aR��� � . SUBSURFACE DRAINAGE COLLECTOR PIPE CAN BE INSTaLLED PRIOR To FINaL aCCEPTaNCE oF THE FIEL�
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<br /> -� �ota� N��� A-�� �� _, � 5 Q�,� �r y� -o R�M���,G Q��, r�� / �,�' IS INSTALLED AT A SUFFICIENT DEPTH BELOW SUBGRADE BEFORE THE TRENCHING FOR THE SUBSURFACE
<br /> S � �1 P�pN� �� �6 � / DRAINAGE SYSTEMS TO AVOID CONFUCTS BETWEEN SYSTEMS.
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<br /> �- �� �°�� ti� � ,� �Nc. a 3. TRENCHING FOR THE SUBSURFACE DRAINAGE LATERALS SHALL NOT PROCEED UNTIL THE IRRIGATION SYSTEM
<br /> �E " c° �S �' � PIPiNG HAS BEEN BACKFILLED AND COMPACTED AND THE FIELD SUBGRADE IS APPROVED BY ENGINEER.
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<br /> � o°� G`�" � �- �`�P 4. TRENCH EXCAVATION SHALL BE MADE TO THE AUGNMENT, ELE�/ATION, GRADE AND SLOPE AS INDICATED ON
<br /> � �� GQ� �� ���L � �F � , ��� � �, THE DRAwINGs. TRENCHING SHALL BE ACCOMPLISHED UTILIZING EQUIPMENT WITH SLOPE AND DEPTH
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<br /> � .� �36 �-� , �_, ,� �, � ,�� E 2� � �: CONTROL, SUCH AS LASER PLANE CONTROL SYSTEM , SO AS TO ENSURE ACCURACY IN THE BOTt'OM OF
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<br /> -�---- � `� 30� '"~------- �. S���wA� � ,y�� � ��' ,,�� � � �' � 5�`��`R `�= 5. NO HIGH POINTS ABOVE DESIGNATED INVERT OR CALCULATED TRENCH BOTTOM ELEVATION WILL BE
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<br /> - ' si��wA�K 6, CHAeN� � �oPPEa w gA��Ea wi��. - � ` • r PERMfTT'ED. NO S UGH NG OF SITE MATERIAL OR LOOSE EXCAVATED SOIL WILL BE PERMITTED TO
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<br /> 6. SURPLUS EXCAVATED SOIL SHALL BE REMOVED FROM THE FlELD AREA PRIOR TO COMMENCING ON THE
<br /> ,/��� MEN� S� � + + Q � - �,�r -- ��� ��� ��� a�' �N� NEXT ADJACENT TRENCH. EXCAVATED MATERIAL MAY NOT REMAIN ON SUBGRADE.
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<br /> �,�' ������°��2Q ` �� �� '���,N� 7. PROVIDE A SMOOTH EVEN SUBGRADE AFTER REMOVAL OF THE TRENCH MATERIAL. SUBGRADE TO BE E V E R
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<br /> P�� i i \� � � � � � � � � � � � � �� � COMPACTED TO 95�. LEAVE NO LOOSE MATERIAL ON THE SUBGRADE. p� ����,
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<br /> - CB 3 i �- � � � � � �� � � � � � � 2� 8. EXCAVATION BELOW INVERT GRADE MUST BE ESTABLISHED TO A DEPTH SO AS TO PROVIDE FOR SPECIFIED � S���� ��,
<br /> , EXISTING � � \� \� � � � � � � \ �� � � PLACEMENT OF PEA GRAVEL BEDDING AT BOTTOM OF PIPE ELEVATION PRI�R TO LAYING THE PERFORATED
<br /> SEWER DRAIN L--- � � � � � � � � �� \ � �
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<br /> � � � � � � � � �'i�o� �\ �\ �\ \ 9. NO FOREIGN MATERIAL WILL BE PERMITTED INSIDE, ALONGSIDE, UNDER, OR ON TOP OF THE PERFORATED
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<br /> � I �� � \� \� \� \� \�� \� \�F� �� �� �� \ � ` � '''� 10. THE BACKFlLL FOR ALL PERFORATED PIPE SHALL BE CLEAN WASHED PEA GRAVEL. REFER TO THE
<br /> ��R� � � � � � � � � �s� � � � � \ SPECIFICATIONS FOR THE GRADATION REQUIREMENTS.
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<br /> �. � , � \ � � � , � � �� �4 � 11. ALL TRENCHES TO HAVE BACKFILL MATERIAL CROWNED A MINIMUM OF 2 ABOVE SUBGRADE TO PROTECT
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<br /> �wc� x , � � � \\ \\ � � 1h, Q-� � � � �.r,9 � � � � � FROM FOREIGN MATERIAL AND PROVIDE FOR EASE OF LOCATION IDENTIFICATION. CROWNS WITH FOREIGN M E M O R I A L
<br /> + ���� �.. \ ..\ \ \ � � �,� � � �� � �c� � � � MATERIAL CONTAMINATION SHALL BE REMOVED PRIOR TO PLACEMENT OF BASE AGGREGATE.
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<br /> �� ' DISPLACEMENT AND PROVIDE FOR ACHIEVING SPECIFIED INVERT ELEYATION. DO NOT DAMAGE PIPE OR
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<br /> ----__ ,�- z � N� �\ � � \ � ��F � � � S � � � ` \ ALLOW PIPE TO BE DISPLACED BY PLACEMENT OF BACKFlLL MATERIAL. BAS E BA L L F I E L D
<br /> 1 Z c� I � � � ��'� � � � � �ra � � , CLEANOUT
<br /> � � � � � ' 13. CAP THE ENDS OF ALL LATERAL RUNS. ALL OPEN ENDS DURING CONSTRUCTION ARE TO BE TEMPORARILY
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<br /> �-�K �y: � �� � �� � � �� � � � � � � � � 14. CONNECTION OF LATERALS TO COLLECTOR DRAINS SHALL BE MADE WITH A COMBINATION REDUCING TEE
<br /> � -_____ � � � � � �'£�y� � t � �� �� � � � \ AND REDUCING SADQLE TEE.
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<br /> � � � � � ��'F � � � � � � � � � �N��S 15. NO TRUCKS OR EQUIPMENT WILL BE ALLOWED TO DRIYE OVER THE TOP OF THE TRENCHES ExCEPT
<br /> ,; � �e ��3�Q ,����o `c � � � \� \� �l_ � � � � � �� ' � \ �� TRACK-EQUIPPED MACHINERY UTILIZED IN SPREADING BASE AGGREGATE. BACKFILLED TRENCHES ARE TO
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<br /> � � � � � � � � . 1 . FIELD LOCATE EXISTING 8 COLLECTOR PIPE. CONNECT INFlELD COLLECTOR PIPE WITH A WATERTIGHT
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<br /> � ���A��--��RS � ���c��,� �� � �� \ \ �� � �� � � TYPE 1 � � � � �p: REPLACE, ANTICIPATE 10 LF IN 10 LOCATIONS.
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<br /> , ` �F.�-�s � �\ � �� �� � � � • � � '� � ` � 18. ENGINEER/ CONTRACTOR TO CONFIRM CONDITION OF EXISTING PERFORATED DRAIN PIPE AND PEA GRAVEL. ..
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