C-2_ADD_01.pdf
PDF 702 KB Posted
- Attached to
- Fort Avenue Sewer Replacement
- Solicitation number
- IFB-117610
- Issued by
- New Kent County, Virginia
About this file
This is an Addendum document prepared by B&B Consultants, Inc. for the Town of Blackstone, Virginia, detailing standard sewer construction details for the Fort Avenue Sewer Replacement project. The addendum supplements the original bidding documents with comprehensive technical specifications and construction details applicable to the sanitary sewer installation work. The project encompasses installation of PVC sanitary gravity sewer pipe in various configurations, including casing installations beneath railroad crossings, three manhole installations at depths ranging from 5 to 15 feet, and two manhole abandonments. The addendum was issued on May 19, 2025, with Revision 1 effective June 18, 2025, and Revision 2 added on May 1, 2026. A pre-bid conference is scheduled for April 30, 2026, at 10:00 am at Town Hall, 100 West Elm Street, Blackstone, Virginia, with sealed bids due by May 12, 2026, at 2:00 pm. The anticipated construction duration is 120 days from project initiation to final completion.
The addendum provides detailed design standards and specifications for all sewer components, including pipe laying conditions for gravity sewers, manhole construction with specifications for concrete grade, joint sealing requirements, booted pipe connectors, jack and bore casing installation with welding requirements conforming to AWWA C206 standards, casing spacers meeting CCS Series specifications by Cascade Waterworks Manufacturing, and end seal details. Additional specifications cover pipe and abandon details, manhole bench and channel configuration, pavement repair using VDOT-approved materials, and utility marker placement along sewer lines at railroad crossings. This federally assisted project is subject to American Iron and Steel requirements, Davis Bacon Act compliance, and equal employment opportunity provisions, with all iron and steel products including pipes, fittings, and covers required to be domestically produced. Bidding documents are available for purchase at $175 from B&B Consultants or electronically through the state vendor portal.
View the file
Other files
| File | Type | Posted |
|---|---|---|
| Prebid Minutes.pdf | ||
| 012200 - UNIT PRICES (Add No. 1).pdf | ||
| Full Set (Bid).pdf | ||
| Planholders List.pdf | ||
| 02-CONTENTS (Add No. 1).pdf | ||
| C-1_ADD_01.pdf | ||
| Specifications- Full Set.pdf | ||
| 06 Bid Frm (Add No. 1).pdf | ||
| Addendum No. 1.pdf | ||
| PREBID ATTENDANCE.pdf | ||
| 03-advertisement for bids-C-111.pdf |
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Text version
2' MIN.
PLUG & ABANDON DETAIL
N.T.S.
PIPE TO BE ABANDONED
MECHANICAL EXPANSION PLUG
FILL PIPE WITH 3,000 PSI
STRENGTH HYDRAULIC
CEMENT
BOOTED PIPE CONNECTOR
O
PE
N
IN
G
N.T.S.
SM
O
O
TH
, R O
U N
D
INTERNAL EXPANDING BAND
EXTERNAL BAND
NEOPRENE BOOT
NO. 57 COMPACTED
BEDDING MATERIAL
PIPE O.D.
CLASS I BACKFILL
SLOPE AS REQUIRED
ORIGINAL GRADE
24" + O.D. MAX..
20" + O.D. MIN.
PLACE NO. 57 STONE
UP TO 2" ABOVE PIPE
FOR PVC OR
POLYPROPYLENE PIPE
WALLS SHALL BE
SLOPED AND/OR
SHEETING PROVIDED
AS PER OSHA
REQUIREMENTS
PIPE LAYING CONDITION - GRAVITY SEWER
N.T.S.
HAND PLACED CAREFULLY
COMPACTED TO 95% DENSITY
AT OPTIMUM MOISTURE
CONTENT IN 6" LIFTS
6"
IN
R O
C K
4"
IN
S O
IL
SOIL ROCK
PIPE SPRING LINE
TRENCH UNDERCUT
MININUM 6" BELOW
BARREL OR PIPE IN ROCK
FOR D.I. PIPE PLACE
NO. 57 STONE UP
TO SPRING LINE
APWA UNIFORM COLOR CODE
WARNING TAPE 12" BELOW GRADE
M.H. BENCH & CHANNEL
O - RING MANHOLE JOINT
3" M
IN
3/
4" O
U
TS
ID
E
N.T.S.
1" M
IN
GROUT
NON - SHRINK
N.T.S.
2" MIN.
3/ 4"
I.
D
I .
D.PIPE
24" MAX.
PIPE I.D.
48" DIA.
12" - 16"
TYP.
BASE
RISERS
CONE
8"
STEP CAST
IN PLACE (TYP.)
3/4" EXPANSION BOLT
TO BE SET A MIN. OF
4" INTO CONCRETE
STANDARD MANHOLE
FRAME AND COVER
PER SPECIFICATION
SEAL UNDER CASTING
AND ALL JOINTS WITH
BUTYL OR BITUMEN RUBBER
SEALER, ASTM C990
TO ASTM A 615 & HAVE A
CONTINUOUS ALIGNMENT
BETWEEN SECTIONS
BOOTED PIPE CONNECTOR,
SEE DETAIL
BENCH, SEE DETAIL
4,000PSI CONCRETE
NOTE: MATERIALS AND FABRICATION IN ACCORDANCE
WITH ASTM C478. CONE SHALL BE OF THE ECCENTRIC
TYPE. CONNECT PIPE TO SECTION WITH APPROVED
FLEXIBLE WATER-TIGHT SLEEVE OR GASKET (INTERPACE
OR EQUAL). THE FLEXIBLE WATER-TIGHT SLEEVE OR
GASKET SHALL BE INSTALLED PER THE MANUFACTURER'S
RECOMMENDATIONS.
8" MIN. THICK BED OF CRUSHED
STONE VDOT #25 OR #26
CONCRETE GRADE RINGS,
STEPS SHALL CONFORM
2" MIN. THICKNESS,
12" MAX. HIEGHT
SANITARY SEWER
PRECAST STANDARD MANHOLE
N.T.S.
JACK AND BORE CASING PIPE
SCALE: N.T.S.
PA
VE
M
EN
T
CE
NT
ER
LI
NE
RECEIVE OR
BORE PIT .
RECEIVE OR
DISTANCE OF BORE BORE PIT
PIPE CASING SPACER
(SEE "CASING SPACERS (TYPICAL)"
DETAIL) CARRIER PIPE
CASING PIPE
DEPTH PER PLANS
MARKING POST
(SEE "MARKING POST (FOR
POTABLE WATER)" DETAIL)
PROTECTION AT ENDS OF CASINGS
(SEE "CASING END SEALS" DETAIL)
WELDING:
STEEL CASING SECTIONS SHALL BE CONNECTED BY WELDING. WELD SHALL CONFORM TO AWWA C206.
NOTE:
1. ALL PIPE JOINTS WITHIN THE CASING ARE TO BE RESTRAINED.
2. TRACING WIRE TO BE INSTALLED THROUGH ALL CASED BORINGS AND CONNECTED TO MARKING POSTS.
3. STEEL PIPE CASING SHALL CONFORM TO THE REQUIREMENTS OF NSCE-8, PLATE I - PIPE DATA SHEET ON SHEET C-1
4. STEEL PIPE CASING SHALL BE INSTALLED SYMMETRICAL ABOUT SEWER PIPE CENTERLINE (TYP). PIPE CASING SHALL BE LAID TRUE TO LINE AND GRADE WITH NO BENDS OR CHANGES IN GRADE FOR THE FULL LENGTH OF THE CASING.
FINAL
GRADE
ROADWAY
PAVEMENT
CASING SPACERS
SCALE: N.T.S.
1' MAX. 1' MAX.
8' MAX. DIP
2' MAX.
DISTANCE OF BORE
CASING
PIPE
PIPE
CASING
SPACER
CARRIER
PIPE
CARRIER
PIPE
JOINT
RUNNER
RISER
STAINLESS
STEEL SHELL
RIBBED FLANGE
LINER
TOP HALF
LINER
BOTTOM HALF
PIPE
CASING
SPACER
CARRIER
PIPE
NOTE:
1. CASING SPACERS SHALL BE CCS SERIES BY CASCADE WATERWORKS MFG. ALTERNATE CASING SPACERS MAY BE USED
WITH PRIOR APPROVAL FROM CITY UTILITIES PROJECT ENGINEER.
2. CITY UTILITIES APPROVED CASING SPACERS AND END SEALS SHALL BE INSTALLED PER MANUFACTURER'S SPECIFICATIONS. USE A "CENTERED" CONFIGURATION AND PROVIDE THE MANUFACTURER WITH THE FOLLOWING
INFORMATION: CARRIER PIPE O.D., CASING PIPE I.D., AND CASING LENGTH.
ANGLES TO BE CONSTANT AROUND
ENTIRE CIRCUMFERENCE OF THE
PIPE. NUMBER OF SPACERS PER
MANUFACTURER'S SPECIFICATIONS
A
A
SECTION "A-A"
CASING END SEALS
SCALE: N.T.S.
CARRIER
PIPE
RUBBER SEAL
CASING PIPE STAINLESS
STEEL BAND
STAINLESS
STEEL BAND
BRICKS AND MORTAR
(AS REQUIRED)
WRAP WATER PIPES AT
BULKHEADS WITH TWO
LAYERS OF 15 POUND
BUILDING FELT
PIPE
CASING SPACER
CASING PIPE
CARRIER PIPE
NOTE:
1. THIS STANDARD IS APPLICABLE FOR 4" DIAMETER AND LARGER CARRIER PIPE.
METHOD 'A'
METHOD 'B'
6' MAX. PVC
11.10"Ø
O.D.
13.7"Ø BELL
17.25"Ø I.D.
CASING PIPE
GENERAL NOTES:
1. ENSURE ALL EXISTING JOINTS ARE SMOOTH & STRAIGHT PRIOR TO INSTALLATION.
2. PAVEMENT REPAIR SHALL BE AS SHOWN BELOW OR MATCH THE THICKNESS OF
EXISTING PAVEMENT, WHICHEVER IS GREATER.
WIDTH AS SHOWN ON PLANS
2" VDOT SM-9.5A ASPHALT 4"
6" VDOT 21-A SUB BASE
PAVEMENT REPAIR DETAIL
N.T.S.
N.T.S.
UTILITY MARKER DETAIL
RHINO TRIVIEW MARKER POST
W/ LABEL OR APPROVED EQUAL
R
M
E K R A
P
T S O
ADDITIONAL UTILITY MARKER NOTES:
1. MARKERS ARE TO BE PLACED ALONG SEWER AT ALL
PERPENDICULAR CROSSINGS OF NORFOLK SOUTHERN
RIGHT-OF-WAY BEFORE AND AFTER RAILWAYS.
FILL-IN BETWEEN DOG HOUSE CUT-OUT & PIPE WITH
NON-SHRINK GROUT & CONCRETE BRICK AS NEEDED
MAINTAINING INSIDE MANHOLE WALL SHAPE.
PROVIDE WATERTIGHT SEAL RAM- NECK
GASKET OR APPROVED EQUAL AROUND THE
PIPE AT MANHOLE WALL
THE TOP HALF OF EX SEWER PIPE TO BE
DEMOED AFTER THE MANHOLE IS SET,
SEALED WATERTIGHT AROUND OPENINGS &
GROUT BENCH IS COMPLETE.
FORM GROUT BENCH SLOPE@ 1"=1'-0"
PRECAST DOGHOUSE MANHOLE DETAIL
N.T.S.
PI
PE
DI
A.
8" MIN. THICK BED OF CRUSHED
STONE VDOT #25 OR #26
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