Drawing_DT-SS-U-1002_Rev_8_Underground_Junction_Boxes.pdf

Box Cover Type Catalog Number

PG1118 Heavy Duty w/ 2 Bolts PG1118HA00

PG1324 Heavy Duty w/ 2 Bolts PG1324HA00

PG1730 Heavy Duty w/ 2 Bolts PG1730HA00

PG2436 Heavy Duty w/ 2 Bolts PG2436HA00

PG3048 Heavy Duty w/ 2 Bolts PG3048HA00

SUBSTATION APPLICATIONS ONLY

Steel covers for replacement purposes only

Non-Traffic - Concrete N9T

Traffic - Steel N9-61J

Non-Traffic - Concrete N30T

Traffic - Steel N30-61J

Non-Traffic - Concrete N36T

Traffic - Steel N36-61J

Non-Traffic - Concrete N40T

Traffic - Steel N40-61J

Non-Traffic - Concrete N48T

Traffic - Steel N48-61J

N-30

N-36

N-40

N-48

Manufacturer and Catalog Number

Quazite Corporation

Christy Concrete Products, Inc.

N-9

Box Application/Cover Type Catalog Number

Full Traffic 444 Roof Slab with inside-outside frame assembly and one (1) 30" manhole frame and cover

Transformer (1-phase) Pad size as required by transformer

Non-Traffic, Submersible

Load Break Junction

Aluminum Adjustable Frame with torsion assist slip resistant covers (3'6" x 5'6")

Full Traffic - ONLY allowed with CPAU Approval

644 Roof Slab with inside-outside frame assembly and one (1) 30" manhole frame and cover

Load Break Cabinet (60" wide) Load Break Pad (48" x 72" x 8")

Load Break Cabinet (44" wide)

Load Break Pad Type 2, with A-1252 Cover

(48" x 72" x 8")

Full Traffic

577 Roof Slab with inside-outside frame assembly and two (2) 30" manhole frames and covers

Non-Traffic

Incidental Quick Release Slip Resistant

Aluminum Plates & Adjustable Frame

Assembly

Submersible Transformer Precast Roof Slab - Tapered Lift Out Cover with Two (2) 30" Grated Cast Iron Covers

Full Traffic Full Traffic Rectangular Splice Cover/Frame

Assembly with Round Covers

Non-Traffic CPA Adjustable Frame with Torsion Assist

Cover Assembly

Non-Traffic /

Submersible Transformer

Incidental Quick Release Slip Resistant

Aluminum Plates & Adjustable Frame

Assembly

Full Traffic Full Traffic Cover/Frame Assembly with Two

(2) Round Covers

Load Break Cabinet (44" wide) Load Break Pad Type 2, with A-1252 Cover

Non-Traffic

Incidental Quick Release Slip Resistant

Aluminum Plates & Adjustable Frame

Assembly

Full Traffic Full Traffic Cover/Frame Assembly with

Three (3) Round Covers

600A Switch, 600 A Splices or Separable Connectors -

TRAFFIC

Full Traffic Cover/Frame Assembly with

Three (3) Round Covers

600A Switch, 600 A Splices or Separable Connectors -

NON-TRAFFIC

Incidental Quick Release Slip Resistant

Aluminum Plates & Adjustable Frame

Assembly

Submersible Transformer CPA Heavy FVT Frame (5") & CPA 24"x29"

Grated Cast Iron Cover

Submersible Switch Precast Roof Slab - Tapered Lift Out Cover with Three (3) 30" Solid Cast Iron Covers

Submersible Transformer Precast Roof Slab - Tapered Lift Out Cover with Three (3) 30" Grated Cast Iron Covers

Switch (Type A) 711-CPA Switch Pad Roof Slab Type A

Switch (Type B) 711-CPA Switch Pad Roof Slab Type B

Switch (Type C) 711-CPA Switch Pad Roof Slab Type C

Switch Precast Roof Slab - Tapered Lift Out Cover with Three (3) 30" Solid Cast Iron Covers

Three Phase Transformer Precast Roof Slab - Tapered Lift Out Cover with Three (3) 30" Grated Cast Iron Covers

644-LA-CPA

38Y-612-LA-CPA

577-LA-CPA

CPA-3536

CPA-3546

CPA-4686

38Y-510-LA-CPA

Manufacturer and Catalog Number

Utility Vault Company

444-LA-CPA

PGE-466

NOTES

1. UNUSUAL FIELD CONDITIONS MAY DICTATE BOX DIMENSIONS FOR DESIGNS DIFFERENT FROM THOSE SPECIFIED IN THIS DRAWING. THE DETAILS FOR INSTALLATIONS VARYING FROM THESE SPECIFICATIONS WILL BE FURNISHED BY

ELECTRIC UTILITY.

2. ALL BOXES SHALL BE COMPLETE WITH BODY, COVER, SOLID BASE, AND NECESSARY EXTENSIONS. A SOLID, CONCRETE FLOOR IS REQUIRED FOR ALL BOXES.

3. ALL NON-CONCRETE ENCLOSURES (BODY, BASE, COVER, AND EXTENSIONS WHERE REQUIRED) SHALL MEET TIER 15 REQUIREMENTS AS SPECIFIED IN SCTE 77 2007 (OR LATEST VERSION) AND PER CPAU SPECIFICATION SS-01-09 –

SPECIFICATION FOR NON-CONCRETE ENCLOSURES.

4. THE NUMBER OF EXTENSIONS REQUIRED IS DEPENDENT ON THE DEPTH OF THE CONDUIT. THE CONDUIT SHALL ENTER STRAIGHT INTO THE BOX, PARALLEL WITH THE COVER, I.E. WITH NO VERTICAL BENDS OR SWEEPS.

5. ALL NON-ROUND COVERS ON ALL BOXES MUST BE SECURED BY RECESSED HOLD-DOWN BOLTS.

6. ALL BOXES SHALL HAVE COVERS APPROVED BY CPAU AND HAVE A NON-SLIP SURFACE.

7. THE WORDS “CPA ELECTRIC”, “CPA SL”, “CPA TS”, OR “CPA COMM” SHALL BE CAST OR INSCRIBED IN THE SURFACE OF ALL COVERS, 30”X48” AND SMALLER DEPENDING ON APPLICATION. LARGER BOXES SHALL HAVE “CPA-HIGH

VOLTAGE” INSCRIBED ON THE FRAME.

8. BOXES LARGER THAN 30”X48” SHALL HAVE PROVISIONS FOR ATTACHING A METAL PLATE INDICATING THE VAULT NUMBER (I.E. LOCATION NUMBER), ALONG WITH THE CORRESPONDING NUMBER PLATE. CONTACT THE UTILITY

ENGINEER FOR THE NUMBER BEFORE ORDERING THE BOX.

9. THE BASE OF EACH BOX SHALL BE PLACED ON A MINIMUM 6” BEDDING OF 3/4” DRAIN ROCK ON UNDISTURBED OR 95% COMPACTED EARTH. THE BOXES SHALL BE INSTALLED SO THE COVERS ARE LEVEL WITH THE ADJACENT CURB, DRIVEWAY, OR SIDEWALK GRADE.

10. FOR 30”X48” OR SMALLER BOXES, AN ALLOWANCE SHALL BE MADE FOR THE THICKNESS OF THE COVER TO ENSURE THE COVER IS FLUSH WITH THE FINISH GRADE. WHEN NO FINISH GRADE IS ESTABLISHED, BOX COVERS SHALL BE 2”

ABOVE THE ADJACENT TERRAIN.

11. IT IS INTENDED THAT CONDUITS SHALL ENTER CONCRETE BOXES THROUGH THE KNOCKOUTS PROVIDED. BOX WALL MAY BE CUT OR CORE DRILLED AT OTHER LOCATIONS TO PROVIDE CONDUIT ENTRY WITH APPROVAL OF THE

CPAU UNDERGROUND INSPECTOR.

12. STEEL CONDUITS SHALL EXTEND NO MORE THAN 2” INTO A BOX AND SHALL BE TERMINATED WITH GROUNDING BUSHINGS. PLASTIC CONDUITS SHALL BE TERMINATED WITH BELL ENDS, FLUSH WITH THE WALL OF THE BOX. BELL

ENDS MAY NOT PROJECT INTO THE BOX. ALL CONDUIT ENTRANCES SHALL BE GROUTED.

13. BOXES USED IN HEAVY TRAFFIC AREAS SHALL BE DESIGNED FOR H-20-44 TRAFFIC LOADING.

14. BOXES 3’X5’ OR LARGER SUBJECT TO MOTOR VEHICLE TRAFFIC, BACKFILL WITH A 6” MINIMUM WIDTH OF TWO SACK SLURRY, OTHERWISE BACKFILL WITH 12” MINIMUM WIDTH OF ¾” BASE ROCK AT 95% COMPACTION.

15. BOXES 3’X5’ OR LARGER REQUIRE A 12” X 12” CONCRETE COLLAR WITH REBAR AROUND THE FRAME AND VAULT.

CONCRETE SHALL BE MINOR CONCRETE PER THE CITY OF PALO ALTO PUBLIC WORKS STANDARD DRAWINGS AND SPECIFICATIONS SIDEWALK REQUIREMENTS, SECTION 16, CONTAINING SIX (6) SACKS OF CEMENT PER CUBIC YARD AND SHALL PROVIDE A MINIMUM COMPREHENSIVE STRENGTH OF 3500 POUNDS PER SQUARE INCH AT 28. TWO PINTS OF LAMPBLACK PER CUBIC YARD OF CONCRETE IS REQUIRED. (SEE DRAWING# DT-SS-U-1038 FOR DETAILS)

16. STEEL TRAFFIC LIDS ARE FOR REPLACEMENT PURPOSES ONLY.

17. ALL BOXES LISTED IN TABLE 1 SHALL BE SIZED FOR THE LARGEST CONDUCTOR THEY ARE EXPECTED TO CONTAIN.

18. FOR BOX INSTALLATION AT THE BASE OF A POLE RISER, SEE CPAU DWG’S DT-SS-U-1001 AND DT-SS-U-1001A.

19. UNLESS APPROVED BY THE UTILITY ELECTRIC ENGINEER, THE DEPTH OF A BOX MAY NOT EXCEED ITS LENGTH.