3. Dark Canyon Drawings (07-23-26).pdf
PDF 3 MB Posted
- Attached to
- 127EAW26Q0037 - Dark Canyon Culvert Repair
- Solicitation number
- 127EAW26Q0037
- Issued by
-
Department of Agriculture Forest Service
About this file
This document is a set of construction drawings and technical specifications for the Dark Canyon Culvert Repair project located on Wild Mad Road in the Shasta-Trinity National Forest, Hayfork Ranger District, California, under the USDA Forest Service Pacific Southwest Region (R05).
The project involves the replacement of a deteriorated steel multi-plate arch culvert structure with a new corrugated steel structural plate arch system manufactured by Contech Engineered Solutions. Key work items include: roadway excavation and embankment (Pay Item 20401), structural backfill placement (Pay Item 20803, 1,700 cubic yards of imported material), roadway reconditioning and grading (Pay Item 30302), repair of the drainage structure including removal of existing culvert remnants and installation of new multi-plate sections (Pay Item 60705), and closure connection work (Pay Item 60103). The contractor is responsible for construction staking, traffic control, dust control, erosion control measures, equipment mobilization, and all labor and materials except government-furnished culvert plates and hook bolts. Estimated quantities include 1 mobilization event, 1 construction survey, 1 roadway excavation project, 1,700 cubic yards of structural backfill, 410 tons of aggregate base, 1,100 linear feet of roadway reconditioning, 2 closure connections, 1 acre of hydraulic seeding, and 1 temporary traffic control measure. All work must comply with FP-24 standard specifications, AASHTO standards, and the manufacturer's installation guidance, with concrete specifications requiring Class A(AE) at 2,500 PSI minimum and reinforcing steel conforming to AASHTO M31 Grade 60.
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Text version
7/24/26
DRAWN
DESIGNER
STAMPS, LOGOS, AND SEALS
PROJECT NAME
DRAWING TITLE
CHECKED
ARCHIVE NO.DATE
PROJECT NO.
DRAWING SHEET NO.
DATENO.
REVISION / ISSUE
OFSHEET
United States Department of Agriculture Forest Service
7/2 3/2
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(R05)
PACIFIC SOUTHWEST REGION
DARK CANYON
CULVERT
REPAIR
SHASTA-TRINITY
NATIONAL FOREST
HAYFORK
RANGER DISTRICT
GENERAL NOTES
07/21/2026
MSK
MSK
Sodaro
002 008
GENERAL NOTES:
1. PUBLIC SAFETY, TRAFFIC CONTROL, AND DUST CONTROL SHALL BE PROVIDED BY THE
CONTRACTOR IN ACCORDANCE WITH STATE AND COUNTY REQUIREMENTS.
CONTRACTOR SHALL SUBMIT A TRAFFIC CONTROL PLAN TO BE APPROVED BY THE C.O.
2. THE CONTRACTOR SHALL IMMEDIATELY NOTIFY THE C.O. OF ANY DISCREPANCIES
ENCOUNTERED IN THE FIELD OR ERRORS IDENTIFIED IN THE CONTRACT.
3. THE CONTRACTOR SHALL KEEP DETAILED RECORDS AND AS-BUILTS SHOWING ALL
MODIFICATIONS MADE TO THESE PLANS. THESE RECORDS AND AS-BUILTS SHALL BE
PROVIDED TO THE C.O. UPON PROJECT COMPLETION.
4. THE CONTRACTOR SHALL BE RESPONSIBLE FOR ALL CONSTRUCTION STAKING. STAKING
SHALL ADHERE TO SECTION 152 OF THE STANDARD SPECIFICATIONS FOR
CONSTRUCTION OF ROADS AND BRIDGES ON FEDERAL HIGHWAY PROJECTS (FP-24).
5. THE CONTRACTOR IS RESPONSIBLE FOR THE PROTECTION OF ALL EXISTING
MONUMENTS AND OTHER SURVEY MARKERS. ANY MARKERS DESTROYED DURING
CONSTRUCTION SHALL BE REPLACED AT THE CONTRACTORS EXPENSE.
6. STAGING AREAS FOR EQUIPMENT AND/OR MATERIAL STORAGE WILL BE ALLOWED ONLY
WITHIN THE LIMITS OF DISTURBANCE AND IN AREAS APPROVED BY THE C.O.
7. ALL VEGETATION OUTSIDE OF THE AREA TO BE CLEARED FOR CONSTRUCTION SHALL
BE PROTECTED. TREES WOUNDED BY CONTRACTOR ACTIVITIES SHALL BE REPAIRED AT
THE EXPENSE OF THE CONTRACTOR.
8. THE CONTRACTOR IS RESPONSIBLE FOR RESTROOMS, WATER, AND ELECTRICITY.
9. ALL IMPORTED MATERIAL MUST BE CERTIFIED WEED FREE AND COME FROM A
LOCATION APPROVED BY THE C.O.
10. ALL EQUIPMENT SHALL ARRIVE ON SITE WASHED AND FREE OF ALL VISIBLE SOIL,
DEBRIS, AND ORGANIC MATTER. ALL EQUIPMENT WILL BE INSPECTED AND APPROVED
BY THE C.O. PRIOR TO UNLOADING ON THE PROJECT SITE.
11. THE CONTRACTOR IS RESPONSIBLE FOR LOCATING AND VERIFYING THE LOCATION OF
ANY AND ALL UTILITIES.
12. ORIGINAL STRUCTURAL DRAWINGS FROM THE CONSTRUCTION OF THE MULTI-PLATE
CULVERT (FOOTINGS, HEADWALLS, ETC.) ARE AVAILABLE UPON REQUEST.
CONSTRUCTION NOTES:
1. THE CONTRACTOR IS RESPONSIBLE FOR MATCHING EXISTING INFRASTRUCTURE AND
THE SURROUNDING LANDSCAPE WITH SMOOTH TRANSITIONS AND FOR AVOIDING ANY
ABRUPT OR APPARENT CHANGES IN GRADE OR CROSS-SLOPE TO THE SATISFACTION
OF THE C.O.
2. GRADING ACTIVITIES SHALL BE SCHEDULED TO ENSURE THAT REPEATED GRADING
WILL NOT BE REQUIRED AND THAT IMPLEMENTATION OF THE DESIRED LAND USE WILL
OCCUR AS SOON AS POSSIBLE AFTER GRADING.
3. ALL EXCAVATED MATERIAL SHALL BE STOCKPILED AT AN APPROVED SITE AND
MATERIAL MEETING THE SPECIFICATIONS MAY BE USED AS NON-STRUCTURAL
BACKFILL. IT IS ANTICIPATED THAT ALL EXCAVATED MATERIAL FREE OF DEBRIS AND
ORGANICS WILL BE USED ON THE PROJECT SITE. ALL EXCAVATED MATERIAL NOT USED
AS SUBGRADE OR NOT SUITABLE AS NON-STRUCTURAL BACKFILL WILL BE PLACED
ONSITE IN LOCATIONS APPROVED BY THE C.O. AT THE CONTRACTOR'S EXPENSE. NO
MATERIAL WILL BE HAULED OFF SITE.
EROSION CONTROL NOTES:
1. THE COST OF ALL BMPS ARE INCIDENTAL TO OTHER ITEMS.
2. TEMPORARY EROSION CONTROL MEASURES AS DESCRIBED IN THESE PLANS ARE
SUGGESTED MINIMUM METHODS OF CONTROLLING EROSION DURING CONSTRUCT/ON.
THE CONTRACTOR SHALL IMPLEMENT ADDITIONAL MEASURES AS DICTATED BY FIELD
CONDITIONS TO CONTROL EROSION AND SEDIMENTATION.
3. ALL TEMPORARY EROSION CONTROL FEATURES SHALL BE INSPECTED DAILY AND
PRIOR TO INCLEMENT WEATHER; CORRECTIVE ACTION WILL BE TAKEN AS NECESSARY
TO INSURE PROPER FUNCTION.
4. THE AREAS OF SOIL AND VEGETATION DISTURBANCE SHALL BE LIMITED TO THAT
REQUIRED FOR CONSTRUCTION PURPOSES. EXCEPT WHERE REQUIRED FOR ACCESS,
THERE SHALL BE NO DISTURBANCE IN AREAS TO BE LEFT IN A NATURAL STATE.
CONSTRUCTION TRAFFIC SHALL BE LIMITED TO AREAS TO BECOME PERMANENT
CIRCULATION OR OTHER DESIGNATED ROUTES APPROVED BY THE C.O.
5. FIBER ROLLS SHALL BE PLACED ALONG THE DOWNSLOPE EDGE OF STAGING AREAS TO
PREVENT CONTAMINATED RUNOFF.
6. STOCKPILES SHALL BE LOCATED IN ALREADY DISTURBED AND FLAT AREAS, AND SHALL
BE SURROUNDED WITH FIBER ROLLS. IF A STOCKPILE IS INACTIVE FOR 14 DAYS, IT
SHALL BE STABILIZED WITH HYDRAULIC MULCH OR PLASTIC.
7. SPILL KITS WITH ABSORBENT PADS SHALL BE ON SITE AT ALL TIMES IN PREPARATION
OF EQUIPMENT LEAKS. ALL VEHICLE MAINTENANCE SHALL TAKE PLACE AT LEAST 100
FEET FROM SURFACE WATER AND ON A LEVEL AREA.
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STAMPS, LOGOS, AND SEALS
PROJECT NAME
DRAWING TITLE
CHECKED
ARCHIVE NO.DATE
PROJECT NO.
DRAWING SHEET NO.
DATENO.
REVISION / ISSUE
OFSHEET
United States Department of Agriculture Forest Service
7/2 3/2
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CA
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(R05)
PACIFIC SOUTHWEST REGION
DARK CANYON
CULVERT
REPAIR
SHASTA-TRINITY
NATIONAL FOREST
HAYFORK
RANGER DISTRICT
SUMMARY OF
ESTIMATED QUANTITIES
07/21/2026
MSK
MSK
Sodaro
003 008
PAY ITEM NOTES
1.) PAY ITEM 20401 (ROADWAY EXCAVATION AND EMBANKMENT) INCLUDES ALL WORK
NECESSARY TO ACHIEVE ROAD SUBGRADE ELEVATION, EXCEPTING STRUCTURAL BACKFILL.
THIS MATERIAL EXISTS ON SITE. EXCESSIVE HAUL/END HAUL ARE NOT ANTICIPATED.
2.) PAY ITEM 20401 SHALL BE PAID BY CONTRACT QUANTITY. A SITE VISIT IS HIGHLY
ENCOURAGED PRIOR TO BIDDING.
3.) PAY ITEM 20803 (STRUCTURAL BACKFILL) INCLUDES ALL MATERIAL TO BE PLACED WITHIN 6
FEET TO EITHER SIDE AND A MINIMUM OF 5 FEET ABOVE THE DRAINAGE STRUCTURE. THIS
MATERIAL SHALL BE IMPORTED FROM OFF-SITE AND CONFORM TO FP-24 SECTION 704.01.
4.) PAY ITEM 30302 (ROADWAY RECONDITIONING) INCLUDES THE GRADING NECESSARY TO
ACHIEVE FINAL DESIGN GRADE, AS WELL ENSURING POSITIVE DRAINAGE OF THE ROADWAY
AND THE FUNCTIONING OF ANY AND ALL DRAINAGE STRUCTURES BETWEEN STATIONS 4+50
AND 15+50, INCLUDING DITCHES.
5.) PAY ITEM 60705 (REPAIR DRAINAGE STRUCTURE) INCLUDES CUTTING EXISTING PLATE
REMNANT, STRUCTURAL EXCAVATION FOR CLOSURE CONNECTION, CLEANING EXISTING
CONCRETE STEM WALL CHANNEL, PREPARING EXISTING CUT EDGES FOR CLOSURE
CONNECTION, ALL WORK ASSOCIATED WITH PREPARING THE EXISTING STRUCTURE FOR
PLACEMENT OF NEW CULVERT MULTI-PLATE, DELIVERY TO THE SITE OF GOVERNMENT
FURNISHED CULVERT PLATES AND CONNECTING HARDWARE, AND INSTALLATION OF NEW
MULTI-PLATE STRUCTURE.
6.) CONTRACTOR SHALL REMOVE REMAINING PARTIALLY CUT STEEL CULVERT PLATES AND
DISPOSE LEGALLY OFF-SITE. CONTRACTOR SHALL PROVIDE A CLEAN CONCRETE SURFACE
TO MATE NEW CULVERT PLATE SECTIONS.
7.) PAY ITEMS 60103 (CLOSURE CONNECTION) AND 60705 (REPAIR DRAINAGE STRUCTURE),
INCLUDING ALL MATERIAL SPECIFICATIONS, SHALL BE PERFORMED PER THE GUIDANCE OF
THE MANUFACTURER OF THE MULTI-PLATE ARCH SYSTEM USED IN BOTH THE ORIGINAL
STRUCTURE AND THE GOVERNMENT SUPPLIED REPAIR MATERIALS (CONTECH ENGINEERED
SOLUTIONS).
8.) PROVIDE ENGINEERED CALCULATIONS FOR CLOSURE CONNECTION BETWEEN NEW AND
EXISTING PIPE SECTIONS TO BE APPROVED BY THE C.O. HOOK BOLTS ARE PROVIDED AS
GOVERNMENT FUNISHED PROPERTY, SEE 'DETAIL A'. ALTERNATE CLOSURE METHODS ARE
ACCEPTABLE PER APPROVAL BY THE C.O.
DETAIL 'A'
CONCRETE
COLLAR
MATERIAL NOTES
1.) CONCRETE - USE CLASS A(AE) FOR ALL CAST-IN-PLACE CONCRETE WITH F'C = 2500 PSI
MINIMUM AT 28 DAYS AND AN ENTRAINED AIR CONTENT PER THE STANDARD SPECIFICATIONS
(FP-24). MAKE ALL CONCRETE IN ACCORDANCE WITH A MIX DESIGN APPROVED BY THE C.O.
CHAMFER ALL EXPOSED EDGES OF CONCRETE 3/4" AND FILLET ALL ACUTE ANGLES 3"
UNLESS OTHERWISE NOTED.
2.) REINFORCING STEEL - USE NON-PRESTRESSED REINFORCING OF THE DEFORMED TYPE
CONFORMING TO AASHTO M31 (ASTM A615), GRADE 60. CONCRETE COVER SHALL CONFORM
TO AASHTO. CUT AND BEND STEEL IN ACCORDANCE WITH ACI 315.
3.) WELDING - WELD IN ACCORDANCE WITH THE BRIDGE WELDING CODE, AWS D1.5. A
CERTIFIED WELDER IS REQUIRED.
PROVIDED FOR EXAMPLE ONLY
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GOVERNMENT FURNISHED PROPERTY
Steel Plate Culvert
DRAWN
DESIGNER
STAMPS, LOGOS, AND SEALS
PROJECT NAME
DRAWING TITLE
CHECKED
ARCHIVE NO.DATE
PROJECT NO.
DRAWING SHEET NO.
DATENO.
REVISION / ISSUE
OFSHEET
United States Department of Agriculture Forest Service
7/2 3/2
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(R05)
PACIFIC SOUTHWEST REGION
DARK CANYON
CULVERT
REPAIR
SHASTA-TRINITY
NATIONAL FOREST
HAYFORK
RANGER DISTRICT
ROAD PLAN AND
PROFILE
07/21/2026
MSK
MSK
Sodaro
004 008
Feet 0 20 40
N
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AutoCAD SHX Text 12+00
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AutoCAD SHX Text 9+50
AutoCAD SHX Text 3334.6
AutoCAD SHX Text Design
AutoCAD SHX Text Centerline
AutoCAD SHX Text 12+18
AutoCAD SHX Text 3327.2
AutoCAD SHX Text End Dip
AutoCAD SHX Text 10+68
AutoCAD SHX Text 3327.5
AutoCAD SHX Text Begin Dip
AutoCAD SHX Text 3333.4
AutoCAD SHX Text 3332.0
AutoCAD SHX Text 3330.3
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AutoCAD SHX Text Elevation (Typ.)
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NFSR 29N30 CENTERLINE PROFILE
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PLAN
AutoCAD SHX Text 10+00
AutoCAD SHX Text 11+00
AutoCAD SHX Text 12+00
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CURVE DATA
AutoCAD SHX Text L=210.42'
AutoCAD SHX Text T=114.48'
AutoCAD SHX Text R=215.16'
AutoCAD SHX Text Δ=56°01'56"
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NFSR 29N30
AutoCAD SHX Text Dark Canyon Creek
AutoCAD SHX Text 10+68
AutoCAD SHX Text Begin Dip
AutoCAD SHX Text 12+18
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DRAIN DIP PROFILE
AutoCAD SHX Text 3327.2
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AutoCAD SHX Text 3327.5
AutoCAD SHX Text 50'
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AutoCAD SHX Text 1.) The drain dip invert shall be smooth and free draining.
AutoCAD SHX Text 2.) The minimum difference in elevation between the sag and
AutoCAD SHX Text crest of the drain dip in 1.0 feet.
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NOTES
AutoCAD SHX Text Hydroseed all areas of soil disturbance outside road shoulder (Typ.)
AutoCAD SHX Text Existing Headwall (Undamaged, Typ.)
AutoCAD SHX Text End Legacy Survey, Begin Road Recon. STA 4+50
AutoCAD SHX Text End Legacy Survey, End Road Recon. STA 15+50
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AutoCAD SHX Text Grade
AutoCAD SHX Text 4" AB Course Grading C
AutoCAD SHX Text 2% Min.
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%%UTYPICAL SECTION
AutoCAD SHX Text Approximate boundary of removed plating (Typ.)
AutoCAD SHX Text 80'
AutoCAD SHX Text Edge of shoulder (Typ.)
AutoCAD SHX Text Edge of traveled way (Typ.)
AutoCAD SHX Text Road
AutoCAD SHX Text Select Granular Structural Backfill
AutoCAD SHX Text Closure connection location. Connect to existing (Typ.)
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AutoCAD SHX Text R = 13'
AutoCAD SHX Text 6' Min.
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%%UMULTI-PLATE ARCH SECTION
AutoCAD SHX Text 10'
AutoCAD SHX Text (Typ.)
AutoCAD SHX Text 3'-4 "516"
AutoCAD SHX Text Minimum Structural Backfill Extents
AutoCAD SHX Text Existing Footing (Typ.)
AutoCAD SHX Text Existing Grade Beams
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NOTE
AutoCAD SHX Text Approximate extents of existing excavation (Typ.)
AutoCAD SHX Text Existing spoil pile to be used as Backfill (Typ.)
AutoCAD SHX Text Culvert partially removed. Contractor shall remove culvert remnant to foundation and dispose legally off-site.
AutoCAD SHX Text Stem wall height varies (Typ.)
AutoCAD SHX Text Non-structural Backfill
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Grades and dimensions shown originate from a legacy survey dated 1998 and represent the design conditions at project completion. No survey data of the current damaged condition exist.
STAMPS, LOGOS, AND SEALS
PROJECT NAME
DRAWING TITLE
CHECKED
ARCHIVE NO.DATE
PROJECT NO.
DRAWING SHEET NO.
DATENO.
REVISION / ISSUE
OFSHEET
United States Department of Agriculture Forest Service
7/2 3/2
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(R05)
PACIFIC SOUTHWEST REGION
DARK CANYON
CULVERT
REPAIR
SHASTA-TRINITY
NATIONAL FOREST
HAYFORK
RANGER DISTRICT
PHOTOS
07/21/2026
MSK
MSK
Sodaro
005 008
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INTACT HEADWALL
CURRENT CONDITION OF CULVERT
TYPICAL VIEW OF TOP OF FOUNDATION STEM WALL
CURRENT CONDITION OF ROAD
LOOKING EAST
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CLEAN EXISTING KEYWAY AND INSTALL GOVERNMENT FURNISHED RECEIVING CHANNEL
AutoCAD SHX Text REMOVE STEEL PLATE TO CONCRETE FOUNDATION. USE REMOVAL METHODS OTHER THAN TORCH CUT
CUT EXISTING PIPE SECTION TO CLEAN LINES (TYP.) USE REMOVAL METHODS OTHER THAN TORCH CUT.
BOTTOM CENTERLINE = 80'-0"
OVERALL LENGTH = 80'-4"
LIP (2") LIP (2")
PLATE LAYOUT --- OUTSIDE VIEW
ALL PLATES ARE 516" THK (8 BOLTS PER FOOT LONGITUDINAL PUNCHING) AND 156" RADIUS
(31) - 3 4" X 19" X 5" HOOK BOLTS
18" C.C. 5" FROM EDGE.
HOLES SHOP DRILLED
TOP C.L.
T9
T8
T7
T6
T5
T4
T3
T2
T1
(31) - 3 4" X 19" X 5" HOOK BOLTS
18" C.C. 5" FROM EDGE.
HOLES SHOP DRILLED
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12'
12'
12'
12'
12'
12'
12'
12'
12'
12'
V9
V8
V7
V6
V5
V4
V3
V2
V1
12'
12'
12'
12'
12'
12'
12'
12'
12'
12'
12'
12'
PLATE MAKE-UP: 6 @ 21Pi, 3 @ 18Pi 180 Pi Total
AREA= 356.8 SF
NOTES:
1. ALL DIMENSIONS ARE TO INSIDE OF CORRUGATION CREST,
UNLESS OTHERWISE NOTED.
2. ALL DIMENSIONS ARE SUBJECT TO MANUFACTURING
TOLERANCES.
R1 3'-
0"
25'-0"
'-7
5°
NEUTRAL AXIS
STEEL MULTI-PLATE
D
EP
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2"
1"
T /2
RAD=1
8"TL
PITCH = 6"
T=T
HIC
KNESS
CORRUGATION PROFILE
Δ° 8"
1'-0"
3"
CIRCUMFERENTIAL PLATE LAPPING AS SHOWN HERE
IS TYPICAL THROUGHOUT STRUCTURE
DETAIL A
FLOW
IMPORTANT
WHEN BEGINNING ASSEMBLY, BE CERTAIN
PLATES ARE ORIENTED SO BOLT HOLE
PATTERN MATCHES THAT SHOWN ON THIS
DRAWING AND ASSEMBLY INSTRUCTIONS.
8"
ED
JEM
CHECKED:
DRAWN:
DESIGNED:
APPROVED:
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SHEET NO.:
OF 3
10/9/2025 DATE:PROJECT No.:
852880 SEQ. No.:
CONTRACT
DRAWING859-744-3339 859-744-9665 FAX
700 Tech Drive, Winchester, KY 40391
STRUCTURAL PLATE
MAD RIVER, CA
DARK CANYON CREEK CULVERT REPLACEMENT
WILD MAD ROAD
REVISION DESCRIPTIONDATEMARK BY
B 12/1/2025 MAX COVER UPDATED TO 38'-0" JEM
The design and information shown on this drawing is provided as a service to the project owner, engineer and contractor by Contech Engineered Solutions LLC ("Contech"). Neither this drawing, nor any part thereof, may be used, reproduced or modified in any manner without the prior written consent of Contech. Failure to comply is done at the user's own risk and Contech expressly disclaims any liability or responsibility for such use.
If discrepancies between the supplied information upon which the drawing is based and actual field conditions are encountered as site work progresses, these discrepancies must be reported to Contech immediately for re-evaluation of the design. Contech accepts no liability for designs based on missing, incomplete or inaccurate information supplied by others.
www.ContechES.com
THE ASSEMBLY BOLTS AND NUTS ARE SPECIALLY DESIGNED WITH ROUNDED
OR SPHERICAL THROATS FOR FITTING EITHER THE CREST OR VALLEY OF THE
CORRUGATIONS, PROVIDING MAXIMUM BEARING CONTACT AREA WITH THE
PLATES WITHOUT THE USE OF WASHERS. NOTE THAT THE BOLTS AND NUTS
SHOULD BE INSTALLED SUCH THAT THE ROUNDED PORTION IS IN
CONTACT WITH THE PLATES.
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FLOW
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OUTLET
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INLET
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SKEW
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TYPE STRUCTURE
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LENGTH @ C
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SIZE
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RISE =
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180 PI
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SINGLE RADIUS ARCH
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SALES ORDER NO.
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PLANT ORDER NO.
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IN-SERVICE REQUIREMENTS.
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6 HOURS. TORQUE LEVELS ARE FOR INSTALLATION, NOT RESIDUAL,
AutoCAD SHX Text 150-300 ft-lbs AND RETIGHTENED TO THESE LIMITS AFTER 4 TO
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COATED PLATES ARE USED, BOLTS SHALL BE INSTALLED AT
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RECOMMENDED. WHEN SEAM SEALANT TAPE OR ASPHALT (SHOP)
AutoCAD SHX Text PLATES, AN INSTALLATION BOLT TORQUE OF 100-300 ft-lbs IS
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TORQUE TO SEAT THE CORRUGATION. FOR PLAIN, GALVANIZED
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USING PROPER ALIGNMENT TECHNIQUES AND ADEQUATE BOLT
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PLATE LAPS MUST BE PROPERLY MATED IN A TANGENT FASHION
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TORQUE NOTE
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ASSEMBLY INSTRUCTIONS.
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SHOWN ON THIS DRAWING AND
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BOLT HOLE PATTERN MATCHES THAT
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CERTAIN PLATES ARE ORIENTED SO
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WHEN BEGINNING ASSEMBLY, BE
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IMPORTANT
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COLORED BUCKET.
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THEY ARE LOCATED IN THE BRIGHT
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SHIPPED WITH THE STRUCTURE.
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ASSEMBLY INSTRUCTIONS WILL BE
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IMPORTANT
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LOADING: HL-93 MIN HOC: 3.5 MAX HOC: 38.0 HOT-DIP GALVANIZED
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STRUCTURE
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9 PLATE
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INLET END VIEW
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* NOTE PLATE LAPPING
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DRAWING #:
852880-010-MP-CON-B
SELECT GRANULAR STRUCTURAL BACKFILL LIMITS.
INITIAL LIFTS OVER THE CROWN OF STRUCTURE AS INDICATED
BY SHADED AREA TO BE COMPACTED TO REQUIRED DENSITY
WITH HAND OPERATED EQUIPMENT OR WITH LIGHTWEIGHT
(D-4 OR LIGHTER) EQUIPMENT.
NOTES:
1. TRENCH WIDTH AND/OR SELECT BACKFILL WIDTH SHALL
BE DETERMINED BY THE ENGINEER DEPENDING ON SITE
SPECIFIC CONDITIONS. TYPICAL BACKFILL WIDTH IS 4 FEET
FOR STRUCTURE SPANS 14 FEET AND LESS, AND 6 FEET
FOR STRUCTURE SPANS GREATER THAN 14 FEET.
2. ALL SELECT GRANULAR BACKFILL TO BE PLACED IN A
BALANCED FASHION IN THIN LIFTS (8" LOOSE TYPICALLY)
AND COMPACTED TO 90 PERCENT DENSITY PER AASHTO
T-180.
3. COMPLETE AND REGULAR MONITORING OF THE SINGLE
RADIUS ARCH STRUCTURE IS NECESSARY DURING THE
BACKFILL PROCESS TO AT LEAST THE MINIMUM COVER
LEVEL.
4. PREVENT DISTORTION OF SHAPE AS NECESSARY BY
VARYING COMPACTION METHODS AND EQUIPMENT.
5. PLACE SELECT GRANULAR BACKFILL IN RADIAL LIFTS AT
APPROXIMATELY 75% OF THE RISE OF THE SINGLE RADIUS
ARCH STRUCTURE.
ADDITIONAL SELECT GRANULAR STRUCTURAL BACKFILL NOTES:
SATISFACTORY BACKFILL MATERIAL, PROPER PLACEMENT, AND COMPACTION ARE KEY FACTORS IN
OBTAINING MAXIMUM STRENGTH AND STABILITY.
THE BACKFILL MATERIAL SHOULD BE FREE OF ROCKS, FROZEN LUMPS, AND FOREIGN MATERIAL
THAT COULD CAUSE HARD SPOTS OR DECOMPOSE TO CREATE VOIDS. BACKFILL MATERIAL
SHOULD BE WELL GRADED GRANULAR MATERIAL THAT MEETS THE REQUIREMENTS OF AASHTO
M-145 FOR SOIL CLASSIFICATIONS A-1, A-2-4, A-2-5 OR A-3 MODIFIED. RECYCLED CONCRETE/SLAG
ARE NOT RECOMMENDED FOR STRUCTURAL BACKFILL MATERIAL.
SEE THE STRUCTURAL PLATE BACKFILL GROUP CLASSIFICATION TABLE ON THIS SHEET. BACKFILL MUST BE PLACED SYMMETRICALLY ON EACH SIDE OF THE STRUCTURE IN 8" LOOSE LIFTS. EACH
LIFT IS TO BE COMPACTED TO A MINIMUM OF 90% DENSITY PER AASHTO T-180.
A HIGH PERCENTAGE OF SILT OR FINE SAND IN THE NATIVE SOILS SUGGESTS THE NEED FOR A WELL GRADED GRANULAR BACKFILL MATERIAL TO PREVENT SOIL MIGRATION. IF THE PROPOSED
BACKFILL IS NOT A WELL GRADED GRANULAR MATERIAL, A NON-WOVEN GEOTEXTILE FILTER
FABRIC SHALL BE PLACED BETWEEN THE SELECT BACKFILL AND THE IN SITU MATERIAL.
DURING BACKFILL, ONLY LIGHTWEIGHT TRACKED VEHICLES (D-4 OR LIGHTER) SHOULD BE NEAR
THE STRUCTURE AS FILL PROGRESSES ABOVE THE CROWN AND TO THE FINISHED GRADE. THE
ENGINEER AND CONTRACTOR ARE CAUTIONED THAT THE MINIMUM COVER MAY NEED TO BE
INCREASED TO HANDLE TEMPORARY CONSTRUCTION VEHICLE LOADS (HEAVIER THAN D-4).
*Modified from AASHTO M-145.
Fine beach sands, windblown sands, stream deposited sands, etc., exhibiting fine, rounded particles and typically classified by AASHTO M-145 as A-3 Materials should not be used.
Reference the most current version of ASTM D2487, Standard Practice for Classification of Soils for Engineering Purposes (Unified Soil Classification System), for comparable soil groups.
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CONCRETE INVERT
(OPTIONAL)
MINIMUM LIMITS OF COMPACTED SELECT
GRANULAR STRUCTURAL BACKFILL
EMBANKMENT
CONDITION
TRENCH
CONDITION
BACKFILL WIDTH
SEE NOTE #1
BACKFILL WIDTH
SEE NOTE #1
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WALL
NATURAL
UNDISTURBED
EMBANKMENT
MP
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SEE NOTE #5
CL
SECTION
8" LOOSE LIFTS
STRUCTURAL PLATE BACKFILL GROUP CLASSIFICATION, REFERENCE AASHTO M-145
GROUP CLASSIFICATION A-1-a A-1-b A-2-4 A-2-5 A-3
Sieve Analysis Percent Passing
No. 10 (2.000 mm) 50 max. ---- ---- ---- ----
No. 40 (0.425 mm) 30 max. 50 max. ---- ---- 51 max.*
No. 200 (0.075 mm) 15 max. 25 max. 35 max. 35 max. 10 max.
Atterberg Limits for Fraction Passing No. 40 (0.425 mm)
Liquid Limits ---- ---- 40 max. 41 min. ----
Plasticity Index 6 max. 6 max. 10 max. 10 max. Non Plastic
Usual Materials Stone Fragment, Gravel and Sand
Silty or Clayey Gravel and Sand
Coarse Sand
FILL MATERIAL ABOVE
MIN. COVER LEVEL
MIN. COVER
ED
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852880 SEQ. No.:
CONTRACT
DRAWING859-744-3339 859-744-9665 FAX
700 Tech Drive, Winchester, KY 40391
STRUCTURAL PLATE
MAD RIVER, CA
DARK CANYON CREEK CULVERT REPLACEMENT
WILD MAD ROAD
Contech Engineered Solutions LLC ("Contech"). Neither this drawing, nor any part thereof, may be used, reproduced or modified in any manner without the prior written consent of Contech. Failure to comply is done at the user's own risk and Contech expressly disclaims any liability or responsibility for such use.
If discrepancies between the supplied information upon which the drawing is based and actual field conditions are encountered as site work progresses, these discrepancies must be reported to Contech immediately for re-evaluation of the design. Contech accepts no liability for designs based on missing, incomplete or inaccurate information supplied by others.
www.ContechES.com
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LENGTH @ C
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SIZE
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RISE =
AutoCAD SHX Text 26'-0"
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180 PI
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AutoCAD SHX Text 16'-7"
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SINGLE RADIUS ARCH
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SALES ORDER NO.
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PLANT ORDER NO.
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DRAWING #:
732721-020-MP-CON-B
2.0 GENERAL CONDITIONS
2.1 Any installation guidance provided herein shall be endorsed by the Engineer; discrepancies herein are governed by the Engineer's plans and specifications.
2.2 The Contractor shall furnish all labor, material and equipment and perform all work and services except those set out and furnished by the Owner, necessary to complete in a satisfactory manner the site preparation, excavation, filling, compaction, grading as shown on the plans and as described therein. This work shall consist of all mobilization clearing and grading, grubbing, stripping, removal of existing material unless otherwise stated, preparation of the land to be filled, filling of the land, spreading and compaction of the fill, and all subsidiary work necessary to complete the grading of the cut and fill areas to conform with the lines, grades, slopes, and specifications.
This work is to be accomplished under the observation of the Owner or his designated representative.
2.3 Prior to bidding the work, the Contractor shall examine, investigate and inspect the construction site as to the nature and location of the work, and the general and local conditions at the construction site, including without limitation, the character of surface or subsurface conditions and obstacles to be encountered on and around the construction site and shall make such additional investigation as he may deem necessary for the planning and proper execution of the work.
If conditions other than those indicated are discovered by the Contractor, the Owner shall be notified immediately. The material which the Contractor believes to be a changed condition shall not be disturbed so that the owner can investigate the condition.
2.4 The construction shall be performed under the direction of the Engineer.
2.5 All aspects of the structure design and site layout including foundations, backfill, end treatments and necessary scour consideration shall be performed by the Engineer.
3.0 ASSEMBLY AND INSTALLATION
3.1 Bolts and nuts shall conform to the requirements of ASTM A449. The single radius arch structure shall be assembled in accordance with the plate layout drawings provided by the Manufacturer and per the Manufacturer's recommendations.
Bolts shall be tightened using an applied torque of between 100 and 300 ft.-lbs.
3.2 The single radius arch structure shall be installed in accordance with the plans and specifications, the Manufacturer's recommendations, and AASHTO Standard Specification for Highway Bridges - Section 26 Division II - Construction/AASHTO LRFD Bridge Construction Specifications - Section 26.
3.3 Trench excavation shall be made in embankment material that is structurally adequate.
The trench width shall be shown on the plans. Poor quality in situ embankment material must be removed and replaced with suitable backfill as directed by the Engineer.
3.4 Bedding preparation is critical to both structure performance and service life.
The bed should be constructed to uniform line and grade to avoid distortions that may create undesirable stresses in the structure and/or rapid deterioration of the roadway.
The bed should be free of rock formations, protruding stones, frozen lumps, roots, and other foreign matter that may cause unequal settlement.
3.5 The structure shall be assembled in accordance with the Manufacturer's instructions.
All plates shall be unloaded and handled with reasonable care. Plates shall not be rolled or dragged over gravel rock and shall be prevented from striking rock or other hard objects during placement in trench or on bedding.
3.6 The structure shall be backfilled using clean well graded granular material that meets the requirements for soil classifications A-1, A-2-4, A-2-5 or A-3 modified per AASHTO M-145. See the structural plate backfill group classification table on this sheet.
Backfill must be placed symmetrically on each side of the structure in 8 inch loose lifts. Each lift shall be compacted to a minimum of 90 percent density per
AASHTO T-180.
3.7 If temporary construction vehicles are required to cross the structure, it is the Contractor's responsibility to contact the Engineer to determine the amount of additional minimum cover necessary to handle the specific loading condition.
Normal highway traffic is not allowed to cross the structure until the structure has been backfilled and paved. If the road is unpaved, cover allowance to accommodate rutting shall be as directed by the Engineer.
3.8 If a metal headwall and/or wingwall system is specified, the select granular structural backfill limits shall extend past the deadman anchor system. Contact the Engineer if stiff material or rock is encountered where the wingwalls and deadmen are to be installed.
1.0 STANDARDS AND DEFINITIONS
1.1 STANDARDS - All standards refer to the current ASTM/AASHTO edition unless otherwise noted.
1.1.1 ASTM A761 "Corrugated Steel Structural Plate, Zinc Coated for Field-Bolted Pipe, Pipe-Arches and Arches" (AASHTO Designation M-167).
1.1.2 AASHTO Standard Specification for Highway Bridges - Section 12 Division I - Design, AASHTO LRFD Bridge Design Specifications
Section 12.
1.1.3 AASHTO Standard Specification for Highway Bridges - Section 26 Division II - Construction, AASHTO LRFD Bridge Construction
Specifications - Section 26. ASTM A807, Standard Practice for Installing Corrugated Steel Structural Plate Pipe.
1.2 DEFINITIONS
1.2.1 Owner - In these specifications the word "Owner" shall mean
SHASTA TRINITY NATIONAL FOREST.
1.2.2 Engineer - In these specifications the word "Engineer" shall mean the Engineer of Record or Owner's designated engineering representative.
1.2.3 Manufacturer - In these specifications the word "Manufacturer" shall mean CONTECH ENGINEERED SOLUTIONS 800-338-1122
JASON LEACH.
1.2.4 Contractor - In these specifications the word "Contractor" shall mean the firm or corporation undertaking the execution of any installation work under the terms of these specifications.
1.2.5 Approved - In these specifications the word "approved" shall refer to the approval of the Engineer or his designated representative.
1.2.6 As Directed - In these specifications the words "as directed" shall refer to the directions to the Contractor from the Owner or his designated representative.
ED
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852880 SEQ. No.:
CONTRACT
DRAWING859-744-3339 859-744-9665 FAX
700 Tech Drive, Winchester, KY 40391
STRUCTURAL PLATE
MAD RIVER, CA
DARK CANYON CREEK CULVERT REPLACEMENT
WILD MAD ROAD
Contech Engineered Solutions LLC ("Contech"). Neither this drawing, nor any part thereof, may be used, reproduced or modified in any manner without the prior written consent of Contech. Failure to comply is done at the user's own risk and Contech expressly disclaims any liability or responsibility for such use.
If discrepancies between the supplied information upon which the drawing is based and actual field conditions are encountered as site work progresses, these discrepancies must be reported to Contech immediately for re-evaluation of the design. Contech accepts no liability for designs based on missing, incomplete or inaccurate information supplied by others.
www.ContechES.com
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LENGTH @ C
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SIZE
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RISE =
AutoCAD SHX Text 26'-0"
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180 PI
AutoCAD SHX Text 80'-0"
AutoCAD SHX Text 16'-7"
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SINGLE RADIUS ARCH
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SALES ORDER NO.
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PLANT ORDER NO.
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DRAWING #:
732721-020-MP-CON-B
| Dark Canyon Drawings (07-23-26).pdf |
| Sheets and Views |
| Dark Canyon Drawings-COVERSHEET |
| OLE1 |
| Dark Canyon Drawings-NOTES |
| OLE1 |
| Dark Canyon Drawings-Qtys |
| OLE1 |
| Dark Canyon Drawings-PLOT |
| OLE1 |
| Dark Canyon Drawings-Photos |
| OLE1 |
File details come from the government source that posted it. Updated .