20191033 Ver 1_PCN Form Submission_20190731

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Pre -Construction Notification (PCN) Form
September 29, 2018 Ver 3
Initial Review
Has this project met the requirements for acceptance into the review process?*
r Yes
r No
Is this project a public transportation project?*
r Yes r No
Change only if needed.
BIMS # Assigned *
Version#*
20191033
1
Is a payment required for this project?*
* No payment required
What amout is owed?*
* Fee received
r $240.00
r Fee needed - send electronic notification
r $570.00
Reviewing Office* Select Project Reviewer*
Raleigh Regional Office - [phone] Stephanie Goss:eads\szgoss
Information for Initial Review
1a. Name of project:
Forest Brook Emergency Sewer Repair
1a. Who is the Primary Contact?*
Eric Kulz
1 b. Primary Contact Email:*
[e-mail]
Date Submitted
7/31/2019
Nearest Body of Water
UT to White Oak Creek
Basin
Cape Fear
Water Classification
WS -V; NSW
Site Coordinates
Latitude:
36.773696
A. Processing Information
County (or Counties) where the project is located:
Wake
Is this project a public transportation project?*
r Yes r No
Longitude:
-78.863139
1a. Type(s) of approval sought from the Corps:
V Section 404 Permit (wetlands, streams and waters, Clean Water Act)
F Section 10 Permit (navigable venters, tidal waters, Rivers and Harbors Act)
1 b. What type(s) of permit(s) do you wish to seek authorization?
P Nationwide Permit (NWP)
F- Regional General Permit (RGP)
r- Standard (IP)
1c. Primary Contact Phone:*
[phone]

1c. Has the NWP or GP number been verified by the Corps?
r' Yes r No
Nationwide Permit (NWP) Number:
NWP Numbers (for multiple NWPS):
1d. Type(s) of approval sought from the DWR:
P 401 Water Quality Certification - Regular
F Non -404 Jurisdictional General Permit
F Individual Permit
12 - Utility Lines
1e. Is this notification solelyfor the record because written approval is not required?
For the record only for DWR 401 Certification:
For the record only for Corps Permit:
F 401 Water Quality Certification - Express
F Riparian Buffer Authorization
1f. Is this an after -the -fact permit application?*
r Yes r- No
1g. Is payment into a mitigation bank or in -lieu fee program proposed for mitigation of impacts?
r- Yes r No
19. Is payment into a mitigation bank or in -lieu fee program proposed for mitigation of impacts?
r• Yes r- No
Acceptance Letter Attachment
1h. Is the project located in any of NC's twenty coastal counties?
r- Yes r No
1j. Is the project located in a designated trout watershed?
r Yes r No
B. Applicant Information
1d. Who is applying for the permit?
Owner W Applicant (other than owner)
le. Is there an Agent/Consultant for this project?
C Yes r- No
2. Owner Information
2a. Name(s) on recorded deed:
See Attachment B.2
2b. Deed book and page no.:
2c. Responsible party:
Eric Kulz (work is within Town of Cary Sanitary Sewer Easements
(See Attachment SS Easements)
2d. Address
Street Address
P.O. Box 8005
Address Line 2
City
State / Rmnoe / Fiejion
Cary
NC
Postal / Zip Code
Country
27512-8005
USA
2e. Telephone Number: 2f. Fax Number:
[phone]
2g. Email Address:*
eric.kulz@tov,nofcary.org
3. Applicant Information (if different from owner)
......... .........
3a. Name:
Eric Kulz
r- Yes r No
r- Yes r No

3b. Business Name:
Town of Cary
3c. Address
Street Address
P.O. Box 8005
Address Line 2
City
Cary
Postal / Zip Code
27512-8005
3d. Telephone Number:
[phone]
3f. Email Address:*
[e-mail]
C. Project Information and Prior Project History
1. Project Information
1b. Subdivision name:
(if appropriate)
Brookstone
1c. Nearest municipality/ town:
Cary
2. Project Identification
2a. Property Identification Number:
0211098,0211099,0200505,0200506
2c. Project Address
Street Address
See Attachment B.2
Address Line 2
VA
Pstal / Zip Code
3. Surface Waters
3a. Name of the nearest body of water to proposed project:*
UT to White Oak Creek
3b. Water Resources Classification of nearest receiving water:*
WS -V; NSW
3c. What river basin(s) is your project located in?*
Cape Fear
3d. Please provide the 12 -digit HUC in which the project is located.
030300020608
4. Project Description and History
Slate / Rwince / Region
NC
Country
USA
3e. Fax Number:
2b. Property size:
1.47
State / Rwince / legion
(buntry
4a. Describe the existing conditions on the site and the general land use in the vicinity of the project at the time of this application:*
The project area is located within the Brookstone subdivision, which is fully developed with single-family homes. Brookstone was constructed in the mid-1990s. The surrounding area
consists of single-family residential developments.
4b. Have Corps permits or DWR certifications been obtained for this project (including all prior phases) in the past?*
r Yes r No r unknown
4d. Attach an 8 1/2 X11 excerpt from the most recent version of the USGS topographic map indicating the location of the project site. (for DWR)
Figure 1 USGS.pdf
96.73KB
4e. Attach an 8 1/2 X11 excerpt from the most recent version of the published County NRCS Soil Survey map depicting the project site. (for DWR)
Figure 2 Soils.pdf 165.33KB
4f. list the total estimated acreage of all existing wetlands on the property:
0
4g. List the total estimated linear feet of all existing streams on the property:
140

4h. Explain the purpose of the proposed project:*
The purpose of the project is to replace an existing sanitary sewer line crossing of the creek, which has been exposed due to streambank erosion and downcutting, to the point where
the line and its concrete casing are exposed and subject to damage during storm flows.
4i. Describe the overall project in detail, including indirect impacts and the type of equipment to be used:*
The project involves installation of a sewer bypass, removal of the existing eight -inch ductile iron sewer line and deteriorated concrete casing, replacement with an eight -inch steel sewer
pipe. A pump -around or diversion of the stream flowwill be installed to ensure work in the dry. Due to the high flows and significant levels of erosion the stream bed and banks at the
project site, the stream bed and banks will be reconstructed with gabion baskets and backfilled with riprap. The existing crossing is diagonal relative to the stream bed, and the new line
will be installed at the same angle, due to the location of other sewer lines and manholes. A perpendicular crossing cannot be achieved.
4j. Please upload project drawings for the proposed project.
Forest Brook Gabion Designs.pdf 863.72KB
5. Jurisdictional Determinations
5a. Have the wetlands or streams been delineated on the property or proposed impact areas?*
r Yes r No r Unknown
Comments:
Sewer line was installed int he early 1990s.
5b. If the Corps made a jurisdictional determination, what type of determination was made?
r Preliminary r Approved r Not Verified r Unknown f• N/A
Corps AID Number:
5c. If 5a is yes, who delineated the jurisdictional areas?
Name (if known):
Agency/Consultant Company:
Other:
5d1. Jurisdictional determination upload
6. Future Project Plans
6a. Is this a phased project?*
r Yes r No
Are any other NWP(s), regional general permit(s), or individual permits(s) used, or intended to be used, to authorize any part of the proposed project or related activity?
None
D. Proposed Impacts Inventory
1. Impacts Summary
1a. Where are the impacts associated with your project? (check all that apply):
F Wetlands 17 Streams -tributaries V Buffers
F Open Waters F Pond Construction
3. Stream Impacts
3a. Reason for impact (?) 3b.lmpact type * 3c. Type of impact* 3d. S. name * 3e. Stream Type * 3f. Type of 3g. S. width*7 3h. Impact
(?) Jurisdiction* length*
Stabilize bed and banks Permanent Ri Ra Fill JUT to White Oak Creek Perennial Both 20 =(01-11-)
i1 P P
3i. Total jurisdictional ditch impact in square feet
0
3i. Total permanent stream impacts: 3i. Total temporary stream impacts:
50 0
3i. Total stream and ditch impacts:
50
3j. Comments:
Impacts are a result of placement of gabion baskets to re -construct the stream banks. Other methods of stabilization cannot be used due to the
presence of fences and existing sewer line which prevent banks from being laid back and stabilized. Vertical banks must be maintained.
6. Buffer Impacts (for DWR)
6a. Project is in which protect basin(s)?

Check all that apply.
F Neuse r Tar -Pamlico
F Catawba r Randleman
F Goose Creek V Jordan Lake
F Other
6b. Impact Type 6c. Per or Temp 6d. Stream name 6e. Buffer mitigation required? 6f. Zone 1 impact 116g. Zone 2 impact
No impacts P UT to White Oak Creek No 0 0
6h. Total buffer impacts:
Zone 1 Zone 2
Total Temporary impacts: 0.00 0.00
Zone 1 Zone 2
Total Permanent impacts: 0.00 0.00
Zone 1 Zone 2
Total combined buffer impacts: 0.00 0.00
6i. Comments:
No buffer being removed/impacted. Vertical stream banks being constructed/stabilized. No vegetation being removed.
Supporting Documentation
E. Impact Justification and Mitigation
1. Avoidance and Minimization
1a. Specifically describe measures taken to avoid or minimize the proposed impacts in designing the project:
Flexibility in the installation of the sewer crossing was extremely limited as the line crossing the creek must conned two manholes on either side of the
creek.
1b. Specifically describe measures taken to avoid or minimize the proposed impacts through construction techniques:
pump-around/diversion of stream flow. Site access via existing sanitary sewer easements. All areas accessed with equipment will be seeded/strawed
after work is complete.
2. Compensatory Mitigation for Impacts to Waters of the U.S. or Waters of the State
2a. Does the project require Compensatory Mitigation for impacts to Waters of the U.S. or Waters of the State?
r Yes r No
2b. If this project DOES NOT require Compensatory Mitigation, explain why:
150 -foot stream impact threshold for mitigation not exceeded. Stream impacts as perpendicular as feasible (75 degrees) given the location of existing manholes.
F. Stormwater Management and Diffuse Flow Plan (required by DWR)
1. Diffuse Flow Plan
1a. Does the project include or is it adjacent to protected riparian buffers identified within one of the NC Riparian Buffer Protection Rules?
r Yes r No
What type of SCM are you providing?
r Level Spreader
F_ Vegetated Conveyance (lower SHWT)
F_ Wetland Swale (higher SHWT)
F_ Other SCM that removes minimum 30% nitrogen
P Proposed project will not create concentrated stormwater flowthrough the buffer
Diffuse Flow Documentation
2. Stomrroater Management Plan
2a. Is this a NCDOT project subject to compliance with NCDOT's Individual NPDES permit NCS000250?*
r Yes r No
2b. Does this project meet the requirements for low density projects as defined in 15A NCAC 02H .1003(2)?

r Yes r No
2c. Does this project have a stormwater management plan (SMP) reviewed and approved under a state stormwater program or state -approved local government stormwater
program?
r Yes r No
3. Stormwater Requirements
3a. Select whether a completed stormwater management plan (SMP) is included for review and approval or if calculations are provided to document the project will not cause
degradation of downstream surface waters.*
f• Stormwater Management r Antidegradation
Plan Calculations
3b. Stormwater Management Plan
Stormwater.pdf
3c. Antidegradation Calculations:
6.9KB
Comments:
This project involves replacing an existing sewer line crossing with a new crossing at the same location and alignment, and stabilizing the stream banks. No concentrated stormwater flow
will result from this project.
G. Supplementary Information
1. Environmental Documentation
1a. Does the project involve an expenditure of public (federallstate/local) funds or the use of public (federal/state) land?*
r Yes r No
1b. If you answered "yes" to the above, does the project require preparation of an environmental document pursuant to the requirements of the National or State (North Carolina)
Environmental Policy Act (NEPAISEPA)? *
r Yes r No
Comments:*
Local funds only
2. Violations (DWR Requirement)
2a. Is the site in violation of DWR Water Quality Certification Rules (15A NCAC 2H .0500), Isolated Wetland Rules (15A NCAC 2H .1300), or DWR Surface Water or Wetland Standards or
Riparian Buffer Rules (15A NCAC 2B.0200)?*
r Yes r No
2b Provide an explanation of the violation(s):
3. Cumulative Impacts (DWR Requirement)
3a. Will this project result in additional development, which could impact nearby downstream water quality?
r Yes r No
3b. If you answered "no," provide a short narrative description.
This project involves replacing an existing sewer crossing in a fully built -out residential subdivision.
4. Sewage Disposal (DWR Requirement)
4a. Is sewage disposal required by DWR for this project?*
CYes CNof NA
5. Endangered Species and Designated Critical Habitat (Corps Requirement)
5a. Will this project occur in or near an area with federally protected species or habitat?*
r Yes r No
5b. Have you checked with the USFWS concerning Endangered Species Act impacts?*
r Yes r No
5c. If yes, indicate the USFWS Field Office you have contacted.
Raleigh
5d. Is another Federal agency involved?*
r Yes r No
5e. Is this a DOT project located within Division's 1-8?
C Yes r No
r Unknown

5f. Will you cut any trees in order to conduct the work in waters of the U.S.?
r Yes r No
5g. Does this project involve bridge maintenance or removal?
r Yes r No
5h. Does this project involve the construction/installation of a wind turbine(s)?*
r Yes r No
5i. Does this project involve (1) blasting, and/or (2) other percussive activities that will be conducted by machines, such as jackhammers, mechanized pile drivers, etc.?
r Yes r No
5j. What data sources did you use to determine whether your site would impact Endangered Species or Designated Critical Habitat?
NCNHP website (7/25/19) and USFWS iPac website (7/25/19).
Consultation Documentation Upload
6. Essential Fish Habitat (Corps Requirement)
6a. Will this project occur in or near an area designated as an Essential Fish Habitat?*
r Yes r No
6b. What data sources did you use to determine whether your site would impact an Essential Fish Habitat?*
Project site not located within a coastal county
7. Historic or Prehistoric Cultural Resources (Corps Requirement)
7a. Will this project occur in or near an area that the state, federal or tribal governments have designated as having historic or cultural preservation status?*
r Yes r No
7b. What data sources did you use to determine whether your site would impact historic or archeological resources?*
NC Historic Preservation Office HPOWEB Service (accessed 7/25/19). No elements on or near project site.
7c. Historic or Prehistoric Information Upload
8. Flood Zone Designation (Corps Requirement)
8a. Will this project occur in a FEMA -designated 100 -year floodplain?*
r Yes r No
8c. What source(s) did you use to make the floodplain determination?*
Map No. 3720076400K FIRM Panel 0764. Date: 5/2/06
Miscellaneous
Comments
Miscellaneous attachments not previously requested.
Forest Brook SS Easements.pdf 1.74MB
Attachment B.2.pdf 145.35KB
Forest Brook Pre -Construction Photos.pdf 609.44KB
Signature
*
rJ By checking the box and signing below, I certify that:
• I have given true, accurate, and complete information on this form;
• I agree that submission of this PCN form is a 'transaction" subject to Chapter 66, Article 40 of the NC General Statutes (the "Uniform Electronic Transactions Act');
• I agree to conduct this transaction by electronic means pursuant to Chapter 66, Article 40 of the NC General Statutes (the "Uniform Electronic Transactions Act');
• I understand that an electronic signature has the same legal effect and can be enforced in the same way as a written signature; AND
• I intend to electronically sign and submit the PCN form.
Full Name:
Eric Kulz
Signature
Date
7/31/2019

FIGURE 1
2016 USGS TOPOGRAPHIC MAP
CARY QUADRANGLE

Forest Brook
Emergency Sewer
Repair
Cary, NC

FIGURE 2
1970 USDA SOILS MAP

Forest Brook
Emergency Sewer
Repair
Cary, NC

Stormwater Issues

This project involves replacing an existing sewer line crossing with a new crossing at the same
location and alignment, and stabilizing the stream bed and banks. No concentrated stormwater
flow will result from this project.

�2
CO
ox F tlox OMAJI'd
SiG�
M

ATTACHMENT B.2
OWNER INFORMATION

1. Name(s) on recorded deed: Russell, Alan & Deborah
Deed book and page no. 009SP - 02976
Address 111 Forest Brook Dr.
Cary, NC 27519

2. Name(s) on recorded deed: Kriefels, Doug & Sheila
Deed book and page no. 016427 - 00380
Address 113 Forest Brook Dr.
Cary, NC 27519

3. Name(s) on recorded deed: Sholtis, Paul & Brigid A.
Deed book and page no. 006212 – 00236
Address 204 Brook Creek Dr.
Cary, NC 27519

4. Name(s) on recorded deed: Blackmon, Jonathan D. & Andrea Previti
Deed book and page no. 016728 – 01778
Address 300 Brook Creek Dr.
Cary, NC 27519

Pre-Construction Photo (May 2019)

Pre-Construction Photo (May 2019)

Wall #1 Start
Wall #2 Start
Back of WallToe of WallBack of WallDRAWN BY: CEH CHECKED BY: SAC
SCALE: 1"=10'
DATE: July 13, 2019
PROJECT NUMBER: 1-19-0473-EA
SHEET 1/9
Cover/Plan3200 Wellington Court, Suite 108 Raleigh, North Carolina 27615 [phone]
PROJECT NAME: Forest Brook Aerial Sewer Repair
LOCATION: Cary, North Carolina
Gabion Basket Retaining Walls
Forest Brook Aerial Sewer Repair
Cary, North Carolina
Sheet Index:
1 - Cover, Plan
2 - Specifications
3 - Elevations - Wall #1, Wall #2
4 - Details 1 - Cross-Section
5 - Details 2 - Assembly
6 - Details 3 - Filling
7 - Details 4 - Closing
8 - Details 5 - Folding
9 - Details 6 - Pipe Penetration
Gabion Basket Retaining Walls
1.1 - Aggregate and Soil Materials
The materials associated with the gabion basket retaining walls shall have the following properties:
A. Retained Material 1: Clean stone, particles 4 to 8 inches (rip-rap)
B. Retained Material 2: Ø = 28 degrees, moist unit weight = 120 lbs./cu.ft.
B. Foundation Material: Ø = 34 degrees, moist unit weight = 120 lbs./cu.ft.
C. Gabion Basket Rock Fill: Clean stone, particle size 4 to 8 inches (rip-rap)
D. Leveling Pad: #57, #5, or #4 clean stone
1.2 - Foundation Loads
The maximum applied foundation load (front edge of wall) is 3,000 pounds/sq.ft.
1.3 - Gabion Baskets
Gabion baskets shall be galvanized then PVC coated 8x10 hexagonal double twist wire mesh type as per ASTM A975-97 and shall meet the
specifications published by Maccaferri.
1.4 - Wall Batter
The wall will not be battered though each successive course shall be set back 1 foot from the previous course.
1.4 - Geogrid
No geogrid is required for this project.
2.0 - Foundation Requirements
The foundation bearing capacity that was assumed for design shall be verified in the field by the owner's engineer. The footing shall be
cleared of loose soil. Required repairs should be performed before contractor begins. The foundation excavation shall be graded to accomodate
the specified wall batter.
2.1 - Leveling Pad
Leveling pad material shall consist of clean #57, #5, or #4 stone. The pad shall be 6" thick and shall project a minimum of 12 inches beyond
the base basket(s). The front and ends of the leveling pad shall be wrapped in a non-woven geotextile - Mirafi 140N or equivalent - extending to
1
3 of
the front-to-back depth of the base basket(s) (see Details 1, Sheet 4). The top of the leveling pad shall be maintained at the elevations indicated for
placement of the gabion baskets (Sheet 3).
3.1 - Assembly
Open and unfold each gabion on a flat, hard surface and remove any shipping folds if necessary. Lift up the sides, ends, and diaphragms
into a vertical position to form an open box shape. Connect the edges of the gabion and diaphragms by using either lacing wire or ring fasteners.
The use of pliers to aid assembly and tying of the units using the lacing wire supplied with the gabions is normally recommended.
3.2 - Fastening Procedure
When using lacing wire, cut off a piece of wire approximately 1.5 times the length of the edge to be tied. Longer edges shall be joined by
several lengths of wire. Tie wires shall be secured around the selvedge wire or heavier edge wire, where present, by looping and twisting the wire
around itself. When steel ring fasteners are used, the use of either a mechanical or a pneumatic fastening tool is required. Spacing of the rings shall
be in accordance with ASTM A975-97 Table 2 Minimum Strength Requirements of Mesh and Connections. Ring fasteners spacing shall not exceed
6 inches. Rings shall be installed at the end and center diaphragms and along all edges. Care shall be taken to ensure the steel ring fastener is
completely closed after installation.
3.3 - Installation and Filling
Gabions shall be connected together and aligned before filling the baskets with rock. Rocks for gabions may be produced by any suitable
quarrying method, and by the use of any device that yields the required sizes within the gradation limits chosen. Rocks shall be hard, angular to
round, durable and of such quality that they shall not disintegrate on exposure to water or weathering during the life of the structure. Gabion rocks
shall range between 4 to 8 inches. The range in sizes may allow for a variation of 5% oversize and/or 5% undersize rock, provided it is not placed
on the gabions exposed surface. In all cases, the oversize rock shall not be larger than 10 inches, and the undersize rock shall not be smaller than
2 inches. During the filling operation some manual stone placement is required to minimize voids. The exposed faces of vertical structures may be
carefully hand placed to give a neat, flat, and compact appearance. The cells shall be filled in stages so that local deformation may be avoided. At
no time shall any cell be filled to a depth exceeding 1 foot higher than the adjoining cell. Stiffeners or crossties shall be installed as indicated, fixed
at 1
3 and 2
3 of the height for 3 foot gabions as the cell is being filled. Preformed corner stiffeners are installed at 45 degrees to the face/side of the
unit, extending an equal distance along each side being braced. When more than one layer of gabions is required, in order for the individual units to
become incorporated into one continuous structure, the next layer of gabions must be connected to the layer underneath after this layer has been
securely closed.
3.4 - Closing
To allow for settlement, level off the fill 1 to 1.5 inches above the top of the mesh. Fold the lid down and pull the edges of the panels to be
connected using an appropriate tool such as a lid closer. The lids shall be tightly laced along all edges, ends, and diaphragms in the same manner
as described for assembling units. Adjacent lids may be securely attached simultaneously. All end wires shall then be turned in to avoid protrusions.
4.1 - Fill Placement
Large clean stone is the only fill expected to be placed for this project. No material requiring compaction has been included in this design.
4.2 - Unsuitable Materials
Soils containing roots, brush, sod, or other organic material shall not be allowed. Frozen soils, snow, ice, heavy clays, or wet soils shall not
be allowed. Material passing the #40 sieve shall not have a liquid limit of greater than 30 and a plastic limit of greater than 15, unless written
consent is obtained from the Engineer prior to placement. Soils may not contain more than 20% passing the #200 sieve, unless approved by the
Engineer. Particle sizes larger than 2 inches shall be removed unless otherwise approved by the Engineer.
4.3 - Soils Testing
No material requiring compaction has been included in this design.
5.0 - Special Provisions
- Tracked construction equipment shall not be operated directly on the gabion wall.
- Placement of gabion baskets shall be as the plans reference for length and elevation.
6.0 - Qualification of Design
Stability of any temporary slopes required by the installation of a segmental retaining wall shall be addressed by a qualified geotechnical
engineer. Responsibility of these temporary slopes rests with the general contractor of this project and the slopes shall meet all OSHA standards.
The wall should be inspected to comply with Special Inspections under the North Carolina Building Code.
7.0 - Owner Responsibility
The Owner shall be required to engage inspection and testing services, including independent laboratories, to provide quality assurance and
testing services throughout the construction of all retaining walls. Testing and inspection services shall only be performed by qualified and
experienced technicians and engineers. At a minimum, quality assurance testing must include foundation soil inspection, soil and backfill testing,
verification of design parameters, and observation of construction for general compliance with design drawings and specifications.
DRAWN BY: CEH
SCALE: N/A
SHEET 2/9
Specifications3200 Wellington Court, Suite 108 Raleigh, North Carolina 27615 [phone]
REVISIONS
DATE DESCRIPTIONBY
SHEET NOTES:CHECKED BY: SAC
DATE: July 13, 2019
PROJECT NUMBER: 1-19-0473-EA
PROJECT NAME: Forest Brook Aerial Sewer Repair
LOCATION: Cary, North Carolina
0+00 0+25 0+50
342
338
335
332
329
342
338
335
332
329
Wall #2
STA. 0+33.0
Bend
0+00 0+25 0+50
338
335
332
329
338
335
332
329
Wall #1
STA. 0+6.0
Bend
Gabion Basket Front to Back Length & Height
Per Course #:
Wall #1 Wall #2
1 - L=6', H=1.5' 1 - L=6', H=1.5'
2 - L=6', H=1' 2 - L=6', H=1.5'
3 - L=3', H=1' 3 - L=6', H=1.5'
4 - L=3', H=1.5'
5 - L=3', H=1'
1
2
3
4
5
3
2
1
3
2
1
3
2
1
STA. 0+12.3
Pipe Penetration
STA. 0+25.5
Pipe Penetration
DRAWN BY: CEH CHECKED BY: SAC
SCALE: 1" = 10'
DATE: July 13, 2019
PROJECT NUMBER: 1-19-0473-EA
SHEET 3/9
Elevations - Wall #1, Wall #23200 Wellington Court, Suite 108 Raleigh, North Carolina 27615 [phone]
PROJECT NAME: Forest Brook Aerial Sewer Repair
LOCATION: Cary, North Carolina
REVISIONS
DATE DESCRIPTIONBY
SHEET NOTES:
- Leveling Pad (not shown) to be constructed as indicated in Specifications (2.1, Sheet 2) and shown in Details (Sheet 4)
- All gabion baskets are 3 feet wide (along wall). Lengths and heights for each course are specified above and shown in cross-section detail (Sheet 4)
6'x1.5'
2.5H:1
V
non-woven fabric
Mirafi 160N or equiv.
tuck back into soil
non-woven fabric
Mirafi 160N or equiv.
tuck back into soil
~8 ft min.
stream bed ~elev. 332 ft
~ elev. 339~ elev. 339
6'x1.5'
6'x1.5'
6'x1.5'
6'x1'
3'x1'
3'x1'
3'x1.5'
2.5H
:
1
V
Front and ends of leveling pad
wrapped in non-woven fabric,
Mirafi 140N or equiv.
Gabion baskets set
back 1' each course
1'
Foundation Soil
c = 0 psf, ɸ = 34°
Retained Material 2
natural soil
c = 0 psf, ɸ = 28°
Retained Material 1
rip-rap fill
*Line excavation at upstream
ends of walls with non-woven
fabric Mirafi 160N or equivalent
and backfill with rip-rap
DRAWN BY: CEH CHECKED BY: SAC
SCALE: N/A
DATE: July 13, 2019
PROJECT NUMBER: 1-19-0473-EA
SHEET 4/9
Details 13200 Wellington Court, Suite 108 Raleigh, North Carolina 27615 [phone]
PROJECT NAME: Forest Brook Aerial Sewer Repair
LOCATION: Cary, North Carolina
REVISIONS
DATE DESCRIPTIONBY
SHEET NOTES:
1. Open and unfold the gabions one by one
on a flat, hard surface. Eliminate all folds due
to the packaging.
Edge
Maccaferri Gabions are
delivered to the job site in
bundles. They are
compressed and strapped in
the factory for easier shipping
and handling.
Strapping wire
fig. 1
Back & Lid
Handling wire
Diaphragm
2. Pull up the sides and the
diaphragms to form an open box. Be
sure the top of the face and the side
are at the same level.
3. Fold by hand the end of the
reinforcing wire of the main unit and
the diaphragms allowing the gabion
to stand by itself.
Front face
fig. 2
End
fig. 3
UNPACKING & ASSEMBLY
PROCESS
FRONT
END
DIAPHRAM
BACK
END
LID
ASSEMBLED
GABION BASKET
fig. 4
H
L
W
DRAWN BY: CEH
SCALE: N/A
SHEET 5/9
Details 23200 Wellington Court, Suite 108 Raleigh, North Carolina 27615 [phone]
REVISIONS
DATE DESCRIPTIONBY
SHEET NOTES:CHECKED BY: SAC
DATE: July 13, 2019
PROJECT NUMBER: 1-19-0473-EA
PROJECT NAME: Forest Brook Aerial Sewer Repair
LOCATION: Cary, North Carolina
Phase 1
Phase 2
Phase 3
1/3
1/3
1/3
CROSSING WIRE
CROSSING WIRE
1/3 h
1/3 h
1/3 h
H
Stiffeners
Dmin=3.4mm (0.134")
REINFORCING DETAIL
FILLING SEQUENCE
FILLING PROCESSES
REINFORCMENT
VIEW
DRAWN BY: CEH
SCALE: N/A
SHEET 6/9
Details 33200 Wellington Court, Suite 108 Raleigh, North Carolina 27615 [phone]
REVISIONS
DATE DESCRIPTIONBY
SHEET NOTES:CHECKED BY: SAC
DATE: July 13, 2019
PROJECT NUMBER: 1-19-0473-EA
PROJECT NAME: Forest Brook Aerial Sewer Repair
LOCATION: Cary, North Carolina
fig. 5Max 150 mmfig. 4
The stainless steel fastener has
a diameter of 50 mm open
and 20 mm closed.
20 mm50 mm
Edges are joined together, using the appropriate lacing techniques.
MANUAL: Continuous wire looped tightly around every other mesh opening,
alternating single and double loops (fig. 5).
MECHANICAL: Using a pneumatic or hand power tool, employing stainless steel "C"
shaped fasteners. For continuity and strength, the recommended spacing is 8 to 12
cm, Max 150mm (fig 4).
FRONT
END
DIAPHRAM
BACK
END
LID
or 3/4 inor 2 in
or 6 inchesCLOSING PROCESS
GABION BASKET
D=3.25" (83mm)
DRAWN BY: CEH
SCALE: N/A
SHEET 7/9
Details 43200 Wellington Court, Suite 108 Raleigh, North Carolina 27615 [phone]
REVISIONS
DATE DESCRIPTIONBY
SHEET NOTES:CHECKED BY: SAC
DATE: July 13, 2019
PROJECT NUMBER: 1-19-0473-EA
PROJECT NAME: Forest Brook Aerial Sewer Repair
LOCATION: Cary, North Carolina
2
1
4321
1 2 3 4
FOLDING PROCESS
DRAWN BY: CEH
SCALE: N/A
SHEET 8/9
Details 53200 Wellington Court, Suite 108 Raleigh, North Carolina 27615 [phone]
REVISIONS
DATE DESCRIPTIONBY
SHEET NOTES:CHECKED BY: SAC
DATE: July 13, 2019
PROJECT NUMBER: 1-19-0473-EA
PROJECT NAME: Forest Brook Aerial Sewer Repair
LOCATION: Cary, North Carolina
1 CUT THE FRONT AND BACK
GABION PANELS FOR GABIONS
"A" AND "B" AS SHOWN.
2 TIE EDGES ALONG THE
PERIMETER OF THE VERTICAL
PANELS AND HAND FILL AND HAND
PACK ROCK FILL UNDER AND
AROUND PIPE AREA.
3 PLACE THE PIPE AND LIFT END
PANELS GABIONS "A" AND "B" AROUND
THE PIPE AND TIE THEM TOGETHER.
5 COMPLETE FILLING AND CLOSE LIDS
FOR GABIONS "C" AND "D".
6'
6'
END
END
END
LACING WIRE
3'
3'
LACING WIRE
FRONT
4 PLACE THE GABIONS "C" AND "D" ON
TOP OF GABIONS "A" AND "B" AROUND
THE PIPE PERFORM LACING OPERATION
OR USE SPENAX RINGS TO TIE GABIONS
"C" AND "D" TO GABIONS "A" AND "B".
HAND PACK ROCK FILL ON TOP AND
AROUND THE PIPE AREA.
LACING WIRE
3'
3'
BACK
LID
LID
BACK
A
C
B
D
DRAWN BY: CEH
SCALE: N/A
SHEET 9/9
Details 63200 Wellington Court, Suite 108 Raleigh, North Carolina 27615 [phone]
REVISIONS
DATE DESCRIPTIONBY
SHEET NOTES:CHECKED BY: SAC
DATE: July 13, 2019
PROJECT NUMBER: 1-19-0473-EA
PROJECT NAME: Forest Brook Aerial Sewer Repair
LOCATION: Cary, North Carolina