attachment-1-bid-115-26.pdf
PDF 580 KB Posted
- Attached to
- CONCRETE CULVERT State and local contract opportunity
- Solicitation number
- Bid 115-26
- Issued by
- Cheshire County, New Hampshire
About this file
This file is a technical specification and design document prepared by the New Hampshire Department of Transportation, Highway Maintenance District 3, for a culvert replacement project over Folsom Brook on Route 16B in Ossipee, New Hampshire (Project 2022-M303-1). The project involves the design and installation of a precast concrete box culvert measuring 5.0 feet wide by 6.0 feet high, consisting of 7.0-foot-wide units totaling 42.0 feet in out-to-out dimension along the centerline. The existing culvert length is 37.8 feet with an 8.2 percent slope, inlet elevation of 425.9 feet, and outlet elevation of 422.8 feet. The project includes integral cutoff walls, wingwall footings, and precast concrete headwalls, with all components requiring mechanical connectors and watertight joints between sections. Design calculations must follow Load and Resistance Factored Design (LRFD) methodology, and shop drawings must be stamped and signed by a New Hampshire licensed professional engineer prior to installation.
The specifications establish detailed design parameters for the culvert structure, including bearing resistance of 7.5 tons per square foot, sliding resistance factors of 0.90, and soil internal friction angles ranging from 30 to 34 degrees depending on backfill material. All exposed concrete edges must be chamfered at 3/4 inch, and joints between culvert and wingwall sections require watertight seals using silicone sealant and barrier membranes. The design must account for differential hydrostatic pressure of at least 3 feet of water, buoyancy effects, and all temporary loads and conditions during the construction phase. Extreme event limit state analyses are not required for this project. The document includes detailed cross-sectional views, plan views, and joint detail drawings showing inlet and outlet configurations, weeper locations, and footing dimensions to guide construction and fabrication.
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| File | Type | Posted |
|---|---|---|
| bid-115-26--1-.pdf | ||
| attachment-2-bid-115-26.pdf | ||
| bid-115-26-award.pdf |
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Text version
GENERAL NOTES
PRECAST CONCRETE BOX CULVERT NOTES
BETWEEN THE CUTOFF WALL AND THE WINGWALL FOOTINGS SHALL BE ALLOWED.
8. THE CUTOFF WALLS SHALL BE INTEGRAL WITH THE CULVERT AND WITH THE WINGWALL FOOTINGS. MECHANICAL CONNECTORS
SELECTED AND APPROVED BY THE DEPARTMENT.
7. PRECAST CONCRETE HEADWALLS DETAILED ON THE PLANS MAY VARY IN APPEARANCE, BASED ON THE MANUFACTURED WALL
AND SECTIONS SHALL BE LEFT IN PLACE.
AND WINGWALL SECTIONS TOGETHER. THESE HARDWARE ASSEMBLIES SHALL BE ATTACHED TO THE OUTSIDE SURFACE OF THE CULVERT
6. GALVANIZED STEEL ANGLES AND BOLTS AS SHOWN IN BOX CULVERT DETAILS SHALL BE UTILIZED TO DRAW CULVERT SECTIONS
5. ALL EXPOSED EDGES OF CONCRETE SHALL BE CHAMFERED 3/4" EXCEPT AS NOTED.
4. JOINTS BETWEEN BOX CULVERT SECTIONS AND WINGWALL SECTIONS SHALL BE WATERTIGHT.
3. CONCRETE COVER REQUIREMENTS SHALL BE AS DEFINED IN THE SPECIAL PROVISION.
SUBJECT TO INSPECTION AND APPROVAL BY THE ENGINEER PRIOR TO INSTALLATION (SEE SPECIAL PROVISION).
2. THE QUALITY OF MATERIALS, PROCESS OF MANUFACTURE, COMPLETED AND FURNISHED BOX CULVERT AND WINGWALLS SHALL BE
ITEM 529.0010
CALCULATIONS (LOAD AND RESISTANCE FACTORED DESIGN SHALL BE APPLIED). FOR DETAILS SEE THE SPECIAL PROVISION FOR
DRAWINGS SHALL BE STAMPED AND SIGNED BY A NH LICENSED PROFESSIONAL ENGINEER AND BE ACCOMPANIED BY ALL DESIGN
DETAILS CORRESPONDING TO ALL OF THE STRUCTURES' JOINTS, AS WELL AS REINFORCEMENT TYPE, SIZE, AND LOCATION.
SHALL BE SUBMITTED FOR APPROVAL IN ACCORDANCE WITH 105.02 FOR ALL COMPONENTS. THESE DRAWINGS SHALL INCLUDE
OF 42'-0" ALONG THE CENTERLINE, AS WELL AS HEADWALLS, CUTOFF WALLS, WING FOOTINGS, AND WINGWALLS. SHOP DRAWINGS
1. PRECAST CONCRETE BOX CULVERT (HIGHWAY), SHALL CONSIST OF 7'-0" WIDE UNITS TOTALING AN OUT-TO-OUT DIMENSION
ANALYSES FOR EXTREME EVENT LIMIT STATES ARE NOT REQUIRED ON THIS PROJECT.10.
THE MINIMUM WIDTH OF THE FOOTING SHALL BE AS SHOWN ON THE PLANS.9.
CONSTRUCTION SITE.
INCLUDING EQUIPMENT LOADS, AND THE EFFECTS OF ANY SURFACE OR SUBSURFACE WATER INFILTRATION INTO THE
THE DESIGN SHALL INCLUDE ALL TEMPORARY LOADS OR CONDITIONS THAT MAY OCCUR DURING THE CONSTRUCTION PHASE, 8.
DIFFERENTIAL HYDROSTATIC PRESSURE OF AT LEAST 3 FEET OF WATER SHALL BE INCLUDED IN THE STABILITY CALCULATIONS.7.
BUOYANCY SHALL BE INCLUDED IN THE STABILITY CALCULATIONS IN ACCORDANCE WITH LRFD SECTION 3.7.2.6.
PASSIVE RESISTANCE FROM SOIL IN FRONT OF THE WINGWALLS SHALL BE NEGLECTED IN THE STABILITY COMPUTATIONS.5.
THE RESISTANCE FACTOR FOR SLIDING (FT) SHALL BE EQUAL TO 0.90.
THE NOMINAL SLIDING RESISTANCE BETWEEN THE SOIL AND THE FOOTING SHALL BE TAKEN AS RT = 0.8 V TAN FF.
SECTION 11.6.3.6 (10.6.3.4) FOR A “PRECAST CONCRETE FOOTING”. LRFD EQUATION 10.6.3.4-2 FOR
FAILURE BY SLIDING AT THE BASE OF THE FOOTING SHALL BE DETERMINED IN ACCORDANCE WITH LRFD 4.
FACTOR FOR BEARING (FB) SHALL BE EQUAL TO 0.45.
THE NOMINAL BEARING RESISTANCE FOR THE FOOTINGS SHALL BE 7.5 TONS PER SQUARE FOOT. THE RESISTANCE 3.
EQUAL TO 120 POUNDS PER CUBIC FOOT.
 SHALL HAVE A SOIL INTERNAL FRICTION ANGLE (ΦF) EQUAL TO 30 DEGREES AND A SOIL UNIT WEIGHT (
EQUAL TO 120 POUNDS PER CUBIC FOOT. THE EXISTING EMBANKMENT AND ROADWAY BASE MATERIAL  HAVE A SOIL INTERNAL FRICTION ANGLE (ΦF) EQUAL TO 34 DEGREES AND A SOIL UNIT WEIGHT (
GRANULAR BACKFILL (ITEM 209.201) AND STRUCTURAL FILL BENEATH FOOTING (ITEM 508) SHALL 2.
 WITH A SOIL UNIT WEIGHT (ƔS) EQUAL TO 125 POUNDS PER CUBIC F
TRAFFIC SURCHARGE LOADS SHALL BE DETERMINED IN ACCORDANCE WITH LRFD SECTION 3.11.6.4 1.
16.0'16.0'
13.5'13.5'
T
Y P
BETWEEN THE CUTOFF WALL AND THE WINGWALL FOOTINGS SHALL BE ALLOWED.
8. THE CUTOFF WALLS SHALL BE INTEGRAL WITH THE CULVERT AND WITH THE WINGWALL FOOTINGS. MECHANICAL CONNECTORS
SELECTED AND APPROVED BY THE DEPARTMENT.
7. PRECAST CONCRETE HEADWALLS DETAILED ON THE PLANS MAY VARY IN APPEARANCE, BASED ON THE MANUFACTURED WALL
AND SECTIONS SHALL BE LEFT IN PLACE.
AND WINGWALL SECTIONS TOGETHER. THESE HARDWARE ASSEMBLIES SHALL BE ATTACHED TO THE OUTSIDE SURFACE OF THE CULVERT
6. GALVANIZED STEEL ANGLES AND BOLTS AS SHOWN IN BOX CULVERT DETAILS SHALL BE UTILIZED TO DRAW CULVERT SECTIONS
5. ALL EXPOSED EDGES OF CONCRETE SHALL BE CHAMFERED 3/4" EXCEPT AS NOTED.
4. JOINTS BETWEEN BOX CULVERT SECTIONS AND WINGWALL SECTIONS SHALL BE WATERTIGHT.
3. CONCRETE COVER REQUIREMENTS SHALL BE AS DEFINED IN THE SPECIAL PROVISION.
SUBJECT TO INSPECTION AND APPROVAL BY THE ENGINEER PRIOR TO INSTALLATION (SEE SPECIAL PROVISION).
2. THE QUALITY OF MATERIALS, PROCESS OF MANUFACTURE, COMPLETED AND FURNISHED BOX CULVERT AND WINGWALLS SHALL BE
ITEM 529.0010
CALCULATIONS (LOAD AND RESISTANCE FACTORED DESIGN SHALL BE APPLIED). FOR DETAILS SEE THE SPECIAL PROVISION FOR
DRAWINGS SHALL BE STAMPED AND SIGNED BY A NH LICENSED PROFESSIONAL ENGINEER AND BE ACCOMPANIED BY ALL DESIGN
DETAILS CORRESPONDING TO ALL OF THE STRUCTURES' JOINTS, AS WELL AS REINFORCEMENT TYPE, SIZE, AND LOCATION.
SHALL BE SUBMITTED FOR APPROVAL IN ACCORDANCE WITH 105.02 FOR ALL COMPONENTS. THESE DRAWINGS SHALL INCLUDE
OF 42'-0" ALONG THE CENTERLINE, AS WELL AS HEADWALLS, CUTOFF WALLS, WING FOOTINGS, AND WINGWALLS. SHOP DRAWINGS
1. PRECAST CONCRETE BOX CULVERT (HIGHWAY), SHALL CONSIST OF 7'-0" WIDE UNITS TOTALING AN OUT-TO-OUT DIMENSION
ANALYSES FOR EXTREME EVENT LIMIT STATES ARE NOT REQUIRED ON THIS PROJECT.10.
THE MINIMUM WIDTH OF THE FOOTING SHALL BE AS SHOWN ON THE PLANS.9.
CONSTRUCTION SITE.
INCLUDING EQUIPMENT LOADS, AND THE EFFECTS OF ANY SURFACE OR SUBSURFACE WATER INFILTRATION INTO THE
THE DESIGN SHALL INCLUDE ALL TEMPORARY LOADS OR CONDITIONS THAT MAY OCCUR DURING THE CONSTRUCTION PHASE, 8.
DIFFERENTIAL HYDROSTATIC PRESSURE OF AT LEAST 3 FEET OF WATER SHALL BE INCLUDED IN THE STABILITY CALCULATIONS.7.
BUOYANCY SHALL BE INCLUDED IN THE STABILITY CALCULATIONS IN ACCORDANCE WITH LRFD SECTION 3.7.2.6.
PASSIVE RESISTANCE FROM SOIL IN FRONT OF THE WINGWALLS SHALL BE NEGLECTED IN THE STABILITY COMPUTATIONS.5.
THE RESISTANCE FACTOR FOR SLIDING (FT) SHALL BE EQUAL TO 0.90.
THE NOMINAL SLIDING RESISTANCE BETWEEN THE SOIL AND THE FOOTING SHALL BE TAKEN AS RT = 0.8 V TAN FF.
SECTION 11.6.3.6 (10.6.3.4) FOR A “PRECAST CONCRETE FOOTING”. LRFD EQUATION 10.6.3.4-2 FOR
FAILURE BY SLIDING AT THE BASE OF THE FOOTING SHALL BE DETERMINED IN ACCORDANCE WITH LRFD 4.
FACTOR FOR BEARING (FB) SHALL BE EQUAL TO 0.45.
THE NOMINAL BEARING RESISTANCE FOR THE FOOTINGS SHALL BE 7.5 TONS PER SQUARE FOOT. THE RESISTANCE 3.
EQUAL TO 120 POUNDS PER CUBIC FOOT.
 SHALL HAVE A SOIL INTERNAL FRICTION ANGLE (ΦF) EQUAL TO 30 DEGREES AND A SOIL UNIT WEIGHT (
EQUAL TO 120 POUNDS PER CUBIC FOOT. THE EXISTING EMBANKMENT AND ROADWAY BASE MATERIAL  HAVE A SOIL INTERNAL FRICTION ANGLE (ΦF) EQUAL TO 34 DEGREES AND A SOIL UNIT WEIGHT (
GRANULAR BACKFILL (ITEM 209.201) AND STRUCTURAL FILL BENEATH FOOTING (ITEM 508) SHALL 2.
 WITH A SOIL UNIT WEIGHT (ƔS) EQUAL TO 125 POUNDS PER CUBIC F
TRAFFIC SURCHARGE LOADS SHALL BE DETERMINED IN ACCORDANCE WITH LRFD SECTION 3.11.6.4 1.
DETAIL A
DETAIL A
DETAIL B
WINGWALL SECTIONS
MECHANICALLY CONNECT
CULVERT TO WINGWALL
MECHANICALLY CONNECT
WINGWALL
CULVERT
HEADWALL
CULVERT
1" = 10'
PLAN VIEW
NOT TO SCALE NOT TO SCALE
DETAIL B
HEADWALL
CULVERT
CULVERT
PRECAST
TOP OF
1.0'
PRECAST CONCRETE HEADWALL JOINT DETAIL
TYPICAL PRECAST CONCRETE BOX TO
(SILANE-SILOXANE)
OF WATER REPELLENT
APPLICATION LIMITS
PROECTION BOARD
BARRIER MEMBRANE WITH
PROECTION BOARD, LAP 2'
BARRIER MEMBRANE WITH
42' - 0"
SEGMENT)
(TYP END
6'-11.75"
(TYP)
1/2"
SEGMENT)
(TYP MID
6'-11.5"
431.5' 433.5'
423.0'421.74'
2.0'
(TYP)
CULVERT PROFILE CROSS SECTION
3.0'
(TYP)
4"Ø WEEPER
1" = 10'
NOT TO SCALE
LOOKING DOWNSTREAM
CULVERT INLET
433.5'
432.5' 432.5'
423.0'
2.0'
6.0'
5.0'
13.5' 13.5'
6'-9"
(TYP)
5.0'
(TYP)
LOOKING UPSTREAM
CULVERT OUTLET
2.0'
6.0'
421.74
5.0'
431.5'
430.5' 430.5'
16.0' 16.0'
8.0'
(TYP)
3.0'
(TYP)
3.0'
(TYP)
& CULVERT SEGMENT
TYP EACH WINGWALL
4"Ø WEEPER
(TYP)
3.0'
WINGWALL
FOOTING
1.0'
(TYP)
(TYP)
1.0'
FOOTING
WINGWALL
A
A
SECTION AA
H
H 3
(MIN)
(TYP)
1.0' **
(TYP)
1.2' *
B
B
SECTION BB
H 3
(MIN)
(TYP)
1.0'
H
(TYP)
1.0'
(ALL WINGWALL SEGMENTS)
H = 85% OF THE MAX HEIGHT
(WINGWALL SEGMENT)
85% OF THE MAX HEIGHT
* IS THE LOCATION OF
(WINGWALL SEGMENT)
85% OF THE MAX HEIGHT
** IS THE LOCATION OF
3.0'
3.0'
(TYP)
1.0'
& CULVERT SEGMENT
TYP EACH WINGWALL
4"Ø WEEPER
1" = 10'
1" = 10'
NOT TO SCALE NOT TO SCALE
(TYP)
3.0'
(TYP)
3.0'
PRECAST CONCRETE WINGWALL JOINT DETAIL
TYPICAL PRECAST CONCRETE BOX TO
AT MECHANICAL CONNECTION HARDWARE).
OF WINGWALL TO TOP OF FOOTING (MAY BE OMITTED
CENTERED ON JOINT. EXTEND FROM 6" BELOW TOP
BARRIER MEMBRANE, PEEL AND STICK, 2'-0" WIDE
WINGWALL
FACE OF
CULVERT
HEADWALL
CULVERT
BACK OF
CORK FILLER
1/2" SELF-EXPANDING
THE BACK OF THE JOINT BY 1'-6"
ACCROSS THE TOP, AND DOWN
FOOTING TO TOP OF WINGWALL,
FROM 6" ABOVE TOP OF
SILICONE JOINT SEALANT
SEAL FACE OF JOINT WITH
PRECAST CONCRETE WINGWALL SEGMENT JOINT DETAIL
TYPICAL PRECAST CONCRETE WINGWALL SEGMENT TO
AT MECHANICAL CONNECTION HARDWARE).
OF WINGWALL TO TOP OF FOOTING (MAY BE OMITTED
CENTERED ON JOINT. EXTEND FROM 6" BELOW TOP
BARRIER MEMBRANE, PEEL AND STICK, 2'-0" WIDE
ACCROSS THE TOP, AND DOWN THE BACK OF THE JOINT BY 1'-6"
FROM 6" ABOVE TOP OF FOOTING TO TOP OF WINGWALL,
SEAL FACE OF JOINT WITH SILICONE JOINT SEALANT
CORK FILLER
1/2" SELF-EXPANDING
WINGWALL
FACE OF
01/12/2026
SITE PLAN SHEET
FOLSOM BROOK
OSSIPEE - NH ROUTE 16B OVER
PROJECT 2022-M303-1
CULVERT REPLACEMENT
HIGHWAY MAINTENANCE DISTRICT 3
NH DEPARTMENT OF TRANSPORTATION
SCALE IN FEET
20 0 20 40
NATURAL BOTTOM
SUNK 2.0' WITH
PRECAST BOX
5.0'W X 6.0' H
PROPOSED
433.322
B100
433.149
S002
GRI
D
422.25
Approx. Ex. ROW
Approx. Ex. ROW
HALL, DANA H.
IRVING OIL LIMITED
IRVING OIL CORPORATION
PERRY, NANCY H., TRUSTEE
PERRY, KEITH E., TRUSTEE
an
3.5'h wood post/ rail mixed woods mixed woods mixed woods gravel drive
H x
W g r a n b o x m r m c u l v c o n c t o p net psnh
F o l s o m
B r o o k asph drive
12"cmp
NH RTE 16B To
Ossipee
ToWest Ossipee
3"pv c
Hall Construction
Folsom Brook
20+00 21+00
400 400
410 410
420 420
430 430
440 440
450 450
460 460
E P
C O
R
E P
S H
O R
E
S H
O R
E
2022-M303-1
CULVERT REPLACEMENT
OVER FOLSOM BROOK
OSSIPEE NH ROUTE 16B
EX.LENTH = 37.8', SLOPE = 8.2%
EX. INV. OUTLET EL.= 422.8'
EX. INV. INLET EL.= 425.9'
SIMULATED STREAMBED MATERIAL
EXCAVATED CHANNEL MATERIALS OR
2 FOOT THICK LAYER OF
OF BURIED EROSION STONE
3 FOOT THICK LAYER
3.00%
433.5'
425.0'
431.5'
423.74'
42'
422.25'
SCALE IN FEET
10 0 10 20
LOOKING DOWNSTREAM
CULVERT INLET
433.5'
2.0'
432.5' 432.5'
425.0'
2.0'
4.0'
5.0'
13.5' 13.5'
6'-9"
(TYP)
5.0'
(TYP)
EX. GROUND
PROP. GROUND
LOOKING UPSTREAM
CULVERT OUTLET
2.0'
2.0'
4.0'
423.74
5.0'
431.5'
430.5' 430.5'
16.0' 16.0'
8.0'
(TYP)
3.0'
(TYP)
PROP. GROUNDEX. GROUND
01/12/2026
DEVELOPED VIEWS PLAN SHEET
FOLSOM BROOK
OSSIPEE - NH ROUTE 16B OVER
PROJECT 2022-M303-1
CULVERT REPLACEMENT
HIGHWAY MAINTENANCE DISTRICT 3
NH DEPARTMENT OF TRANSPORTATION
SCALE IN FEET
5 0 5 10
| Rte 16B Precaster Details |
| Rte 16B Precaster Details |
| Rte 16B Precaster Details |
| Rte 16B Precaster Details |
| Rte 16B Precaster Details |
File details come from the government source that posted it. Updated .