Drawings_Plan Sheets Bid Set-RR7 MM 4.1 Culverts_ Revised SEPT 2023.pdf

RR7 MM4 CULVERTS

General Notes:

1. Contractor shall submit a traffic control plan for approval prior to beginning construction, per NMSHTD and the

MUTCD. Contractor is responsible for maintaining all traffic control devices and maintaining vehicular access 24 hours a day 7 days a week.

2. All materials and equipment shall be installed in accordance with manufacture's published recommendations, contract documents, industry standards and all federal, state, and local codes and amendments as adopted by the government for service intended by the Contracting Officer (KO). The install of all materials and equipment shall be made by experience and licensed craftsman in a neat workman like manner. All materials, supervision, labor, tool, costs and services necessary to completely install a functional system shall be furnished by the contractor.

3. The term "provide" used in the drawings and scope of work implies the contractor is to furnish, transport, install, connect, warrant, and start-up, inclusively.

4. The drawings are diagrammatic only but shall be followed as closely as actual construction conditions and work of other trades permit.

5. Upon completion of work, contractor shall provide within 10 days, manufacture's operating & maintenance manual for all equipment including replacement parts list.

6. Contractor shall report discrepancies between field conditions and new construction drawings to the KO in writing before the RFI deadline during the solicitation phase.

7. Should there be any concern by the contractor, the contractor shall submit a Request For Information (RFI) through the proper procedures to have his/her concerns resolved.

8. Contractor shall field verify all quantities. Contractor shall field verify all existing utilities prior to any excavation. No heavy equipment shall be used. Contractor shall hand excavate or pothole all utilities to verify locations. Report any damage to the COR immediately.

9. Contractor shall remove and dispose of any existing asphalt pavement or rigid concrete. Contractor shall dispose rigid concrete at the WSMR Hughes Reclamation Area (Main Cantonment) located at the intersection of Watertown and

Hughes Ave. Rigid concrete shall be free of rebar and/or all debris. Contractor shall provide a report to the COR of quantities disposed of.

10. Contractor shall provide an as-built survey with existing grading elevations within 10 days upon completion of the project..

11. Contractor shall apply water for dust control per section 158 of the Federal Highway Administration (FP-03). Contractor shall utilize fire hydrant located at LAT= 32.4802, long = -106.4186, Approximately 4 miles South of project. the contractor must install a back flow prevention device that is approved by WSMR Water Plant manager, 575-678-1917.

Alternate water source is located at LAT: 32.9022, LONG: -106.4322, a pond, contractor shall supply pump approximately 30 miles North of project.Metering of water usage shall be required and reported to the COR on a weekly basis by the amount of truck loads used per day

12. Contractor shall clear and grub 30' wide area for bypass road, see site plan.

13. Vegetation shall be deposited at borrow site specified for this project, located at LAT: 32.5129, LONG: -106.4295. No foreign debris shall be placed at borrow site; concrete, pavement, rebar, rocks ect.

14. Contractor shall saw cut and remove existing asphalt to replace culvert structure.

15. A borrow pit is available for use, located at LAT: 32.5129, LONG: -106.4295, 1 mile south of the project. COR shall be notified at least 5 working days prior to removing any material. Quantities of material removed shall be reported to the

COR on a weekly basis. When finished using borrow pit, contractor shall remove any grubbed vegetation and leave side slopes at a 4H:1V or flatter slope.

Traffic Sign Notes:

1. All sign materials and installation shall comply with the latest edition of the Manual on Uniform Traffic Control Devices, Section 701 of NMSHTD and Plan Sheet 8.

2. All sign panels shall conform to ASTM B 209. Sign panels shall be constructed of 0.125" Aluminum.

3. All sign sheeting shall comply with ASTM D4956 Type IX Diamond Grade VIP Sheeting.

4. NCHRP 350 compliant breakaways sleeves shall be required on all sign installations with the exception of delineators.

5. All new traffic signs, specifications and placement distances shall be per sign details and sign distance tables of the "standard highway signs" standard manual, 2009 edition.

6. All new signs shall be installed at designated areas and new sign posts shall have a "slipbase system"

& shall be installed at a safe clear distance from the existing curb or edge of pavement.

7. All traffic signs and posts shall be disposed offsite at a State Licensed Landfill.

Pre-cast Box Culvert:

1. All materials and workmanship shall conform to the New Mexico Department of Transportation Specifications for Highway and Bridge Construction and NMDOT Standards..

2. All concrete shall be class "AA" (4000psi). Chamfer all exposed edges

3. Contractor shall install 8EA 12 X 10 precast box culverts, contractor shall field verify all dimensions.

4. Approved Waterproofing membrane and adhesive shall extend to outside barrels and one foot lap down outer wall.

5. Contractor shall provide an OSHA approved Trench safety system.

6. Type III Object Markers shall be provided and installed per plan sheet 8.

7. Re-grade and compact upstream and downstream channel bed (200' from edge of apron and full width.Grade to original profile to match existing elevation of apron.

Pavement Marking Notes:

1. All pavement markings & striping shall be 4" wide, white or yellow as indicated on the details and plan sheets 8 and shall conform to standard highway colors.

2. All pavement markings shall be installed by using Type "B" Waterborn pavement marking material with glass beads per section 634.05 of the FP-03 & Plan sheet 8 of drawings. TY 1 glass beads shall be applied at a minimum rate of 6 pounds per gallon of paint.

3. All specifications for pavement markings are as per Manual of Uniform Traffic Control Devices (MUTCD) and standard manual 2009 Edition.

4. Contractor shall prepare Road surface prior to applying roadway markings per manufacture specifications.

Material Testing:

1. The contractor shall control the quality of the work and shall provide adequate testing to assure compliance with the specifications.

2. After completion of paving work, all paving shall be flooded with water and any resulting "birdbaths" shall be ringed with chalk. Such hollows shall be corrected with addition of asphalt paving materials and re-rolling until all paving is completely level and free from hollows and high spots at no additional cost to the government.

3. Contractor shall perform in-place density and compaction test of the completed pavement in accordance with

CTM No. 375 to determine compliance with specified requirements. Test density core for each 250 tons of

HMA. Maximum area size shall be 500 tons with a minimum of 3 test per location and 1 test for each 50 tons after. Each pavement area shall be an independent lot. Compaction shall be taken as an average for a pavement area. COR shall determine core location.

Berms & RipRap:

1. Wire for riprap shall be "W" or hexagonal mesh and meet the required listed sections of 602 of the NMDOT

Standards Specifications for Highway and Bridge Construction Current Edition.

2. Steel Stakes shall be galvanized steel pipe or 4" X 4" X 3/8" steel angles. Steel stakes shall project 6" above top of riprap.

3. Where splicing is necessary an overlap of at least 1 foot shall be provided.

4. Top of Earth Berm shall be constructed level with top of wing wall.

5. Contractor shall use native rock or other suitable materials for rock berms.

GENERAL NOTES:

1. Reconstruct a portion of Range Road 7 per detail 1 on Sheet 6.

2. Contractor shall clear & grub the 30' temporary bypass road to a smooth and continuous alignment with a minimum radius of 150'.

Elevation to match existing pavement elevation of Range Road 7.

Dispose of vegetation at borrow site.

3. Contractor shall remove and dispose of silt, sedimentation and rock in the arroyo prior to constructing bypass.

4. Contractor may use borrow pit to build up bypass road. Grade and compact bypass road to 98% as per ASTM D1557. All work shall be performed in a manner that provides safe traffic flow 24 hours a day, 7 days a week, access through the project area and adjacent roads.

Contractor is responsible for the traffic control necessary to allow such access.

5. Contractor shall install 5 runs of temporary 48" CMP aligned with the flow of the channel. Contractor shall maintain two way vehicular access 7 days per week 24 hours per day service to this bypass road.

Remove and dispose of bypass road at project completion

6. Saw-cut and remove existing roadway and substrate. Dispose of any existing asphalt pavement or rigid concrete. Contractor shall dispose rigid concrete at the WSMR Hughes Reclamation Area (Main

Cantonment) located at the intersection of Watertown and Hughes

Ave. Rigid concrete shall be free of rebar and/or all debris. Contractor shall provide a report to the COR of quantities disposed of.

7. Remove and dispose of existing 1EA 48" CPM approximately 60LF.

Replace with 8 - 12' x 10' precast concrete box culverts.

60'

140'

65'

15'

SITE PLAN

BEGIN CULVERT:

LAT:32.5243,

LONG:-106.4287

R R

PROPOSED STAGING AREA:

LAT:32.5242,

LONG:-106.4285

BYPASS

RD

BEGIN BYPASS RD:

LAT:32.5239,

LONG:-106.4287

END BYPASS RD:

LAT:32.5249,

LONG:-106.4287

R

R

O P

O P

POWER

POLE

N

END CULVERT:

LAT: 32.5246,

LONG:-106.4287

TEMP

CULVERT

BYPASS CONSTRUCTION NOTES:

1. Contractor shall construct and maintain the temporary bypass road throughout the duration of the project per NMDOT

SSHBC 405.

2. Contractor shall clear and grub the 30' temporary bypass road to a smooth and continuous alignment with a minimum radius of 150'. Elevation to match existing pavement elevation of

Range Road 1.

3. Contractor shall remove and dispose of rock sedimentation and silt in the arroyo in order to install CMP, prior to constructing bypass 30' wide road with embankment slopes no steeper than 3:1. Contractor may use WSMR borrow pits.

4. Contractor shall install 5-48” diam. steel CMP as per specification section 206 NMDOT SSHBC. CMP shall be galvanized gage 16. The alignment of the CMP shall be skewed to match what was removed, align with the center of the arroyo's flow path crossing the road.

5. All work shall be performed in a manner that provides safe traffic flow 24 hours a day, 7 days a week, access through the project area and adjacent roads. Contractor is responsible for the traffic control necessary to allow such access.

6. Apply water for dust control per Section 158 of the Federal

Highway Administration FP-03. Contractor may utilize the fire hydrant located at LAT= 32.4802, long = -106.4186, Approximately 4 miles South of project. the contractor must install a back flow prevention device that is approved by

WSMR Water Plant manager, 575-678-1917.

7. Upon completion and acceptance of the project, the contractor shall remove the temporary bypass road and dispose of the excess soil to the borrow pit. reestablish surrounding area to original or better condition with the surface runoff flow into the arroyo. Demolish existing CMP and dispose.

2'-0"

4'-0"

8"

24"

2'

4"

12"

Existing RockClass 2 Non-Woven Fabric

Wrap bottom, sides and top of

Crushed Stone.

" to

" Crushed Stone or Rock, Dense or Open-Grade With

Little or No Fines, Vibratory

Compaction.

Bedding

Concrete Sand

D/2

Flowable

Fill

Optional

Flowable Fill

Backfill Per Specifications 206.

Ensure a smooth transition from existing Roadway to Bypass.

DETAIL 2- TYPICAL BYPASS CROSS-SECTION

Scale: None

Bypass Details

F l o w

Concrete Apron

Concrete Wingwall

Concrete Apron

Concrete

Wingwall

Culvert

Approach

Guard Rail

See Detail

Sheet 7

Shoulder

Shoulder

Wire Enclosed Riprap

A

A

8 - 12' x 10' Concrete Pre-Cast Box Culverts

Sawcut existing asphalt, provide a new Type "SP-III" asphalt mix with a

Tack Coat on all edges per Section

407 of NMSHTD

Sawcut existing asphalt, provide a new Type "SP-III" asphalt mix with a

Tack Coat on all edges per Section

407 of NMSHTD

50'-0"

50' from Edge of Guardrail

Limits of Grading f r o m e d g e o f a p r o n

Wire Enclosed Riprap

50'-0"

12'

Existing 1EA-48"CMP pipe to be removed

9.5"

H e a d w a l l

#4 Bars

@ 18" c-c

#4 Bars

@ 12" c-c

#4 Bars

#4 Bars

3.82'

11"

106.5' Back to Back of Endwalls of Concrete Box Culverts

Pre-cast Box Culvert:

1. All materials and workmanship shall conform to the New Mexico

Department of Transportation

Specifications for Highway and

Bridge Construction and NMDOT

Standards..

2. All concrete shall be class "AA"

(4000psi). Chamfer all exposed edges

3. Contractor shall install 8EA 12 X

10 precast box culverts.

Contractor shall field verify all quantities,locations and dimensions. Align culverts with the natural flow of the channel.

4. Approved Waterproofing membrane and adhesive shall extend to outside barrels and one foot lap down outer wall.

5. Steel Tube Drain shall be installed two per face, Standard Drawing

511-66-5/6.

6. Contractor shall provide an OSHA approved Trench safety system.

7. Type III Object Markers shall be provided and installed per plan sheet 8.

8. Re-grade and compact upstream and downstream channel bed 200' from edge of apron and full width.Grade to original profile to match existing elevation of apron.

BOX CULVERTS

SECTION VIEW

NO SCALE

BOX CULVERTS

PLAN VIEW

NO SCALE

N

Subbase - Scarify to 8 inches and compact to

95% per ASTM D1557.

New Type

Superpave (SP-IV) asphalt surface compacted to a minimum of 3 inch thickness

New Type

Superpave

(SP-III) asphalt pavement surface.

Tack Coat

Overlap base min.

12" from edge of

HMAC.

New TY II Base

Course compacted to 96% per ASTM

D1557 to a final thickness of 6 inches.

Native Fill - 3H:1V max slope. Compact to 95% per ASTM

D1557.

Subbase - scarify to

8 inches and compact to 95% per

ASTM D1557.

6' - 0" MIN

SHOULDER

6' - 0" MIN

2% Crown Slope

Traveled Way

SHOULDER

12' - 0" MIN

Traveled Way

12' - 0" MIN

Tack Coat

New TY II Base Course compacted to 96% per

ASTM D1557 to a final thickness of 6 Inches.

Subbase - scarify to

8 inches and compact to 95% per

ASTM D1557.

Native Fill - 3H:1V max slope. Compact to 95% per ASTM

D1557.

DETAIL 1- TYPICAL ROADWAY CROSS-SECTION

Scale: None

Final Road Width

1. SW = Final Shoulder Width = 6 feet.

2. TW = Traveled Way Width = 12 feet.

3. Apply new center line to match existing on all new paved areas per Section 634.05 of the Federal Highway

Administration (FP-03).

4. Apply new shoulder line to all new paved areas per Section

634.05 of the FP-03.

5. Contractor shall field verify all quantities.

ROADWAY CONSTRUCTION NOTES

1. Roadway shall be replaced with 8" of subgrade compacted to 95% density, 6" TY II base course compacted to 96% per section 303 (NMSHTD). Apply tack coat and 3" of HMAC Superpave (SP-III) per 423. Asphalt shall be placed in 1.5" lifts, apply tack coat between lifts. Restripe to match existing.

2. All work shall be performed in a manner that provides 24 hour vehicular access through the project area and adjacent roads in a safe manner. Contractor is responsible for the traffic control necessary to allow such access.

3. Contractor shall ensure there is a smooth transition from existing roadway to new roadway, with matching elevations. Re-grade shoulders to a 2% cross slope from edge of pavement.

4. Apply water for dust control per Section 158 of the Federal Highway Administration FP-03.

5. Upon completion and acceptance of the roadway opening to traffic, the contractor shall demolish and remove the temporary bypass road. Remove excess soils from project site and haul to borrow pit.

Roadway Details

CONCRETE CULVERT CROSSING

BEGINNING LAP

INTERMEDIATE LAPEND LAP

SET POST VERTICAL. VARY

POST LENGTH AS REQUIRED

FOR GRADE

GUARDRAIL POST

& BLOCK

PROPOSED HEADWALL

ATTACHED TO

CONCRETE CULVERT

FACE

TOP OF NEW

CONCRETE

BARREL

PROPOSED SELF ADHERING

WATERPROOFING MEMBRANE ROLLED

OVER ENTIRE TOP OF BARREL

12" x 12" x

" THICK STEEL

PLATE WITH 7/8"Φ x 6"

BOLTS BOLTED TO NEW

CONCRETE BARREL

6" THICK PROPOSED

AGGREGATE BASE

COURSE

3" THICK PROPOSED

ASPHALT SURFACE

SET POST VERTICAL. VARY

POST LENGTH AS REQUIRED

FOR GRADE

GUARDRAIL POST &

BLOCK

NEW CONCRETE

BARREL

M

I N

M

A X

V A

R I E

S

SET POST VERTICAL. VARY

POST LENGTH AS REQUIRED

FOR GRADE

GUARDRAIL POST

& BLOCK

6" THICK PROPOSED

AGGREGATE BASE

COURSE

3" THICK PROPOSED

ASPHALT SURFACE

SET POST VERTICAL. VARY

POST LENGTH AS REQUIRED

FOR GRADE

GUARDRAIL POST &

BLOCK

M

I N

M

A X

HAS-E

" dia.

HAS-E

" dia.

W6x9

BOLT MAY BE PLACED

THROUGH EITHER LEFT

OR RIGHT FLANGE

BOLT HOLE

" x 10" BUTTON

HEAD BOLT WITH

OVAL GRIP & HEX

NUT

Guardrail Notes:

1. End treatment shown is a general depiction of an SKT-SP (Sequential Kinking

Terminal-Standard Post System) 50'

NMDOT accepted end terminal that is

FHWA accepted as crashworthy at Test

Level 3 (TL-3) and may be used for all posted speeds.

2. Accepted systems, on the Departments

Approved Product List, shall be installed according to manufactures' installation instructions.

3. Contractor shall grade guardrail installation area to a 10:1 slope or flatter.

4. A reflectorized object marker shall be installed. Adhesive backed reflective sheeting may be applied directly to guardrail end treatment impact head as per the manufacturer's recommendation. Direct applied sheeting shall provide a smooth surface and have no wrinkles, air bubbles, cuts or tears. Reflective material shall be

Type VIII with yellow background and black chevron stripes. Stripes shall be oriented with their tops away from traffic and angles down at 45° toward traffic.

5. These end treatments do not require an offset at the end. End treatments shall be installed ensuring that the end piece is 2' off the shoulder. A maximum flare of 25:1 or flatter over the length of the treatment is allowed.

6. End treatments shall be of the length and test level specified in these drawings and as specified by the manufacturer for the intended end treatment type and test level.

Only end treatments currently on the

NMDOT Approved Product List will be accepted for installation. For specific end treatment details, see manufacturers' drawings.

7. Contractor shall warp all grade transitions to create smooth surface contours.

3" THICK PROPOSED

ASPHALT SURFACE

3" THICK PROPOSED

ASPHALT SURFACE

PROPOSED GUARDRAIL

SECTION VIEW

NO SCALE

GUARDRAIL ATTACHED TO CONCRETE CULVERT

DETAIL 1

NO SCALE

GUARDRAIL BEYOND CONCRETE CULVERT

DETAIL 2

W

SHOULDER

12' MIN.

GUIDE OR DIRECTIONAL SIGN WITH

SECONDARY SIGN INSTALLATION ON

EXPRESSWAYS AND FREEWAYS

SIGN INSTALLATION

IN CURB SECTION

SIGN INSTALLATION

BEHIND TRAFFIC BARRIER

MULTIPLE SIGN POST INSTALLATION

IN DITCH SECTION

SIGN INSTALLATION

IN DITCH SECTION

SIGN INSTALLATION

ON STEEP FILL SLOPES

SIGN INSTALLATION

IN FILL SECTION

SIGN

6'

MIN.

SLOPE BREAK

V

(7' MIN.)

V

(7' MIN.)

SHOULDER

W

SLOPE BREAK

12'

MIN.

SIGN

FILL SLOPES

STEEPER

THAN 6H:1V

SLOPE BREAK

SHOULDER

12' MIN.

V

(8' MIN.)

V

(5' MIN.)

MAJOR SIGN

0" MIN.

3" MAX.

SECONDARY

SIGN

W

V

(7' MIN.)

EDGE OF

TRAVELED

WAY

EDGE OF

TRAVELED

WAY

EDGE OF

TRAVELED

WAY

SIGN

EDGE OF

TRAVELED

WAY

CURB

W

2'

MIN.

V

(7' MIN.)

SIGN

3'

MIN.

W

TRAFFIC BARRIER

EDGE OF

TRAVELED

WAY

SIGN WITH SUPPLEMENTAL

PLAQUE INSTALLATION

IN FILL SECTION

V

(7' MIN.)

SLOPE BREAK

SHOULDER

PRIMARY

SIGN

6'

MIN.

12' MIN.

W

5' MIN.

0" MIN.

3" MAX.

SUPPLEMENTAL

PLAQUE

EDGE OF

TRAVELED

WAY

EDGE OF

TRAVELED

WAY

SLOPE BREAK

SHOULDER

12' MIN.

W

4'

MIN.

V

(7' MIN.)

SIGN

SHOULDER

12' MIN.

W

EDGE OF

TRAVELED

WAY

SLOPE BREAK

4'

MIN.

V

(7' MIN.)

DITCH DITCH

SIGN

7' MIN.FLATTER THAN 3H:1V

2' MIN.STEEPER THAN 3H:1V

BACKSLOPE

SIGN POST FOUNDATION

V

(7' MIN.)

SIGN

EDGE OF

TRAVELED

WAY

6' to 12'

(2' MIN.)

Holes 1" four sides, 1.75" x 1.75" post

Bending design breakaway

Anchor sleeve

(one size larger than post)

10'-0" 10'-0"30'-0"

4"

4"

4"

4"

Passing Line or

Skip Line

Solid No - Passing Line or

Shoulder Stripping

Double Yellow

Centerline

Stripe Notes:

1. All Waterborn Markings shall comply with the Manual of Uniform

Traffic Control Devices.

2. Apply Waterborn Traffic Markings with glass beads per Section

634.05 of the FP-03. Glass beads shall be applied at a minimum rate of 6 pounds per gallon of paint..

3. Restripe shoulder and centerline to match existing.

4"

Traffic Sign Notes:

1. All sign materials and installation shall comply with the latest edition of the Manual on Uniform

Traffic Control Devices.

2. All sign panels shall conform to ASTM B 209.

Signs panels shall be constructed of 0.125"

Aluminum.

3. Sign Posts shall be 1.75"x1.75" galvanized square post conforming to ASTM A 1011, grade

55.

4. All sign sheeting shall comply with ASTM D4956

Type III High Intensity Prismatic Sheeting.

5. NCHRP 350 compliant breakaways required on all sign installations EXCEPT delineators.

Roadway Markings/Stripe Notes:

1. Restripe all new paved surfaces.

2. Contractor shall match existing shoulder and center stripping. Contractor shall document the existing centerline layout prior to reconstruction of the roadway.

3. All pavement markings shall be a 4" Type "B"

Waterborn Traffic Marking.

4. All traffic markings shall comply with the Manual of Uniform Traffic Control Devices and the

Federal Highway Administration FP-03, 634.05.

5. Prepare road surface and apply per mfg.

instructions.

PAVEMENT MARKING TYPICAL SHOULDER/CENTER STRIPE DIMENSIONS

NO SCALE

TRAFFIC SIGNS TYPICAL SHOULDER ROADWAY SIGNAGE

PROPOSED SELF ADHERING

WATERPROOFING

MEMBRANE ROLLED OVER

EXISTING TOP OF BARREL

PER SECTION 531 OF

NMSHTD SPECIFICATIONS

6" THICK PROPOSED

AGGREGATE BASE COURSE

PER SECTION 303 OF

NMSHTD SPECIFICATIONS

3" THICK PROPOSED

ASPHALT SURFACE PER

SECTION 423 OF

CONTRACT DOCUMENTS

ENGINEER FILL SUBBASE

#4 Bars

#4 Bars

#4 Bars

#4 Bars @ 12" c-c

B a r s c c

#4 Bars @ 12" c-c

#4 Bars @ 12" c-c

#4 Bars @ 12" c-c

B a r c c

B a r c c

#5 Bars

Box Culvert Notes:

1. Provide Object Marker signs per locations shown, D5/this Plan

Sheet.

2. Remove loose concrete from headwalls, wingwalls and center column and provide a concrete mortar (Class 2 Rubbed Surface) finish to all tops and streamside faces of headwalls, columns and wingwalls and for 6 inches down the back side of wingwalls per

Section 511.3.9.3 Concrete

Structures of the New Mexico State

Highway & Transportation

Department 2019 Edition. Unless otherwise approved by the

Engineer, use only hand tools or power-driven chipping hammers

(15-lb. class maximum) to remove concrete.

3. Remove trees and vegetation from both upstream and downstream aprons.

SECTION AA

SECTION VIEW

NO SCALE

CONCRETE APRON

PARTIAL PLAN

NO SCALE

CONCRETE WING WALL

SECTION VIEW

NO SCALE

CONCRETE APRON

PLAN VIEW

NO SCALE

CONCRETE APRON

DETAIL

CULVERT DETAILS

Concrete Apron

Concrete

Wingwall

Shoulder

8 - 12' x 10' Concrete Pre-Cast Box Culverts

50'-0"

Wire Enclosed Riprap

Earth Berm

Earth Berm

250'

8'

Earth Berm

2:1 or Flatter

Wire Enclosed

Riprap Class A

Wire Enclosed

Riprap Class A

Top of Earth Berm shall be constructed level with top of wing wall.

Geotextile

Wire Enclosed

Riprap Class A

2'

8'

Steel Stakes 5' Long at 8' Center each way.

18"

4'

Berms and Riprap Details

Earth Berm

NO SCALE

N

A A

EARTH BERM SECTION A-A

NO SCALE

Wire Enclosed Riprap

NO SCALE

General Notes:

1. Wire enclosed riprap shall use native materials or other suitable material.

2. Wire fabric for riprap shall be "W" or hexagonal mesh and meet the current of the NMDOT standard specifications for highway and bridge construction, current edition. Mesh shall be staked to the stream bed prior to aggregate placement.

3. Steel Stakes shall be galvanized steel pipe or 4" X 4" X 3/8" steel angles. Steel stakes shall project 6" above top of Rock filter dams.

4. Embed posts at least 18 in. deep, or adequately anchor, if in rock, with a spacing of 6 to 8 ft. and install on a slight angle toward the runoff source.

5. Place the aggregate on the mesh and then fold the mesh at the upstream side over the aggregate and secure it to itself on the downstream side with wire ties, or hog rings.

PLAN VIEW