Fort Sill NC Plan Set Reduced Amendment 1 5 of 11

5" REINFORCED CONCRETE PER DETAIL B8/C-501.
1"

KEYED NOTES

REMOVE EXISTING FILTER SAND.

2.

REMOVE EXISTING COARSE AGGREGATE.

3.

REFER TO SECTION A-A FOR REPLACEMENT MATERIALS.

4.

REMOVE EXISTING 4" HDPE AT LOW POINT DISCHARGE

AND INCREASE OPENING FOR PROPOSED 6" LINE. WALL

PENETRATION SHALL BE MADE WATER TIGHT WITH

METHOD AND PRODUCT TO BE ACCEPTED BY THE COR.

5.

CONSTRUCT CLEANOUT. SEE DETAIL F5/C-503.

6.

CONSTRUCT AREA DRAIN. SEE DETAIL F6 ON THIS SHEET.

7.

CLEAN AND SEAL PRECAST WALL CAP FOR ENTIRE LENGTH

OF WALL USING RADONSEAL OR COR APPROVED EQUAL

PRODUCT. REMOVE MATERIAL BETWEEN CAP JOINTS,

CLEAN OUT VOIDS, AND PLACE NEW BACKER ROD AND OR

SEALANT MATERIALS WHERE VOIDS MAY INTRODUCE

WATER. JOINT SEALANT TO BE APPROVED BY COR PRIOR

TO APPLICATION. ANY USE OF MASKING TAPE ON CAPS

MUST BE REMOVED SAME DAY IT IS APPLIED.

5"

1.

A

6" COMPACTED TYPE 'A' BASE

PER SPECIFICATION 31 20 11.

COMPACTED SUBGRADE PER

SPECIFICATION 31 20 11.

END CAP (TYP.)

4'-1/2" MAX.

EXISTING CONCRETE WALL

* SEE OVER EXCAVATION

NOTE THIS SHEET

NON-WOVEN GEOTEXTILE

FILTER FABRIC

4" PERFORATED HDPE

DRAINAGE PIPE. (TYP)

B

OVER EXCAVATION NOTES:

DISCHARGE TO OUTSIDE

FINISHED GRADE

DRAINAGE FILL

PER SPECS

6" SOLID HDPE

DRAINAGE PIPE.

SOILS BELOW CONCRETE REPAIR AREAS SHALL BE REMOVED TO A

DEPTH OF AT LEAST 30". SOILS BELOW 30" SHALL BE EVALUATED BY

A GEOTECHNICAL ENGINEER PRIOR TO PLACEMENT OF ANY FILL.

EVALUATION OF THE SOIL SUITABILITY WILL BE AT THE DISCRETION

OF THE GEOTECHNICAL ENGINEER. THE EVALUATION MAY BE

ACCOMPANIED BY T-PROBE TESTING, DYNAMIC CONE

PENETROMETER (DCP) TESTING, OR ANY OTHER METHODS DEEMED

NECESSARY BY THE GEOTECHNICAL ENGINEER. ANY FILL PLACED

SHALL MEET REQUIREMENTS OF LOW VOLUME CHANGE (LVC)

MATERIAL AS DEFINED BY SPECIFICATION 31 20 11.

1'-6"

16.9'

A

A

END CAP (TYP.)

B

NON-WOVEN GEOTEXTILE

FILTER FABRIC

12.6'

6" SOLID HDPE

DRAINAGE PIPE

6" SOLID HDPE

DRAINAGE PIPE.

C

A

4" PERFORATED

HDPE DRAINAGE PIPE

13.9'

C7

4" PERFORATED HDPE

DRAINAGE PIPE. (TYP)

UNDISTURBED

EXISTING SUBGRADE

C

SECTION A-A

SCALE: N.T.S.

9.4'

EXISTING WALL

3'-6"

6" SOLID HDPE

DRAINAGE PIPE.

FINISHED GRADE

SEE GRADING PLANS

24" INTEGRATED DUCTILE IRON FRAME

AND GRATE TO MATCH BASIN O.D.

EXISTING JUNCTION BOX

D

D

12" THICK LAYER OF DRAINAGE FILL

WRAP AROUND PERFORATIONS PER

SPEC 31 20 11.

NYLOPLAST DRAIN BASIN

EXISTING

FILTER SAND

RISER SHALL BE 24" DIA. OR 6" GREATER IN

DIA. THAN THE LARGEST CONNECTED PIPE.

NON-WOVEN GEOTEXTILE

FILTER FABRIC WRAP

AROUND PERFORATIONS AND

OUTSIDE OF DRAINAGE FILL.

CONTRACTOR SHALL HAND DRILL 34" DIAMETER