ADDENDUM_3_CD_304_2202_L116_GRAD_2.pdf

PDF 1 MB Posted Aug 27, 2026

Attached to: Sheraden Park Phase 1 Construction
Solicitation number: 2026-IFB-152
Issued by: Allegheny County, Pennsylvania

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Written by GovTribe AI · Oct 5, 2026

This is an addendum to the civil engineering grading plan for Sheraden Park Phase 1 Improvements, a City of Pittsburgh Department of Public Works project located at 701 Thornton Street in Pittsburgh, Pennsylvania. The addendum, dated August 26, 2026, updates the Site Grading Plan - Area 2 (Sheet L116) with revised existing contours based on survey information prepared by Tri-State Design and Development dated February 8, 2023, with additional survey data provided September 5, 2023. The project encompasses site grading and earthwork for the first phase of park improvements, with design and engineering services provided by Fahringer, McCurty, Grey, Inc. (Civil Engineer), Klavon Design Associates, Inc. (Landscape Architect), Santangelo & Lindsay, Inc. (Electrical Engineer), The Gateway Engineers, Inc. (Geotech Engineer), and other supporting consultants. The project includes rough order of magnitude grading volumes of approximately 3,500 cubic yards of cut (maximum depth 4.25 feet) and 2,000 cubic yards of fill (maximum depth 3.00 feet) site-wide, with specific attention to steep slope stabilization, fill and backfill compaction requirements, and drainage considerations.

The addendum includes critical geotechnical grading notes addressing existing erosion and elevated soil moisture conditions. Contractor responsibilities include locating and protecting all underground utilities, verifying existing field conditions before work commencement, and performing fine grading of all disturbed beds and planting areas. Key specifications address subgrade preparation with minimum ten passes of vibratory roller compaction, stabilization of soft zones with AASHTO No. 1 crushed stone, cohesive fill compaction to 95 percent of maximum standard Proctor density, and finished slope compliance with maximum ratios of 1.5:1 for cut slopes and 2:1 for fill slopes. The contractor must maintain all inlets to prevent sediment and debris accumulation and ensure smooth blending of new paving and earthwork with existing conditions through sawcutting and grading adjustments. Klavon Design is responsible for applying for parent permits, while the contractor is responsible for obtaining and pickup of all permits and applying for subsequent permits necessary to complete the work.

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ADDENDUM_3_CD_304_2202_L119_GRAD_5.pdf	PDF	Aug 27, 2026
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ADDENDUM_2_Sheraden_Park_Geohazard_Report.pdf	PDF	Aug 20, 2026
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Sheraden_Park_Phase_1_Construction_-_SOV.xlsx	XLSX spreadsheet	Jun 25, 2026
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FFE 775.1(ASSUMED)

TW 780.0

BW 775.4

++ TW 777.0BW 776.5

775.6

BW 774.0

TW 775.0

BW 777.1

BW 773.0

TW 778.8

TW 775.0

TW 774.5

BW 773.0

2:1 SLOPE

+774.8 +

775.6+

775.1

+ EX. TREE±765.5

12.5%

5.5%

2% SLOPE (MAX)

2:1 SLO

12.5%

1.4% SLOPE

776.5 +

770.7 +

770.7

TW 776.0

BW 775.4

'-4

98'

60'

±2 3'

-1 0"

±7'

C O

PAC

T C

O M

PAC

C O

PAC

T C

O M

PAC

C O

PAC

T C

O M

PAC

C O

PAC

T C

O M

PAC

C O

PAC

T C

O M

PAC

C O

PAC

T C

O M

PAC

C O

PAC

T C

O M

PAC

C O

PAC

T C

O M

PAC

10'

'-4

EXISTING 1' CONTOUR

PROPOSED 1' CONTOUR

PROPOSED 5' CONTOUR

FFE FIRST FLOOR ELEVATION

BW BOTTOM OF WALL

TW TOP OF WALL

SPOT ELEVATION

EXISTING 5' CONTOUR

PERCENT SLOPE5%

+790.5

CB CATCH BASIN

BC BOTTOM OF CURB

TC TOP OF CURB

LP LOW POINT

ACCESSIBLE PATH

DEMOLITION CONTOUR

1. DRAWINGS GENERATED BASED ON SURVEY

PREPARED BY TRI-STATE DESIGN AND

DEVELOPMENT DATED FEBRUARY 8, 2023;

ADDITIONAL SURVEY INFORMATION PROVIDED

ON SEPTEMBER 05, 2023.

2. PRIOR TO CONSTRUCTION, THE CONTRACTOR IS

RESPONSIBLE FOR LOCATING ALL UNDER-

GROUND UTILITIES AND SHALL AVOID DAMAGE

TO ALL UTILITIES DURING INSTALLATION. THE

CONTRACTOR IS RESPONSIBLE FOR REPAIRING

ALL DAMAGE TO UTILITIES, STRUCTURES, SITE

APPURTENANCES, ETC., WHICH MAY OCCUR AS A

RESULT OF CONSTRUCTION.

4. KLAVON DESIGN IS RESPONSIBLE FOR APPLYING

FOR ALL PARENT PERMITS NECESSARY TO

INITIATE THE WORK. CONTRACTOR IS

RESPONSIBLE FOR PICKING UP ALL PARENT

PERMITS AND APPLYING FOR ALL SUBSEQUENT

PERMITS NECESSARY TO COMPLETE THE WORK.

5. INLETS SHALL BE MAINTAINED SO AS NOT TO

ALLOW ANY SEDIMENT OR DEBRIS TO PREVENT

THE FLOW OF WATER INTO THE INLETS. ANY

OBSTRUCTIONS TO THE PIPE SHOULD BE

REMOVED.

6. CONTRACTOR SHALL VERIFY ALL EXISTING

CONDITIONS IN THE FIELD AND REPORT ANY

DISCREPANCIES IN THE SITE SURVEY TO THE

OWNER AND/OR LANDSCAPE ARCHITECT PRIOR

TO STARTING ANY WORK

7. AT ALL LOCATIONS WHERE EXISTING CURBING,

ASPHALT, CONCRETE ROADWAY OR CONCRETE

SIDEWALK ABUT NEW CONSTRUCTION, THE EDGE

OF THE EXISTING CURB OR PAVEMENTS SHALL

BE SAWCUT TO A CLEAN, SMOOTH EDGE.

8. WHERE NEW PAVING OR EARTHWORK MEETS

EXISTING PAVING OR EARTHWORK SMOOTHLY

BLEND LINE AND GRADE OF EXISTING WITH NEW.

9. GENERAL CONTRACTOR TO FINE GRADE ALL

DISTURBED BEDS & PLANTING AREAS IN

PREPARATION FOR LANDSCAPE CONTRACTOR.

10. REFER TO SPECIFICATIONS FOR SITE MATERIAL

SELECTIONS.

SHEET NUMBER

SHEET TITLE

DRAWN BY: ARG

PROJECT

DATE

NOTES

2026.01.15

OWNER

414 Grant Street, Room 301 Pittsburgh, PA 15219

D O

C U

.0 2.

CHECKED BY: RAW

SCALE:

Sheraden Park Phase I Improvements City of Pittsburgh, Allegheny County

PROFESSIONAL SEAL

CIVIL ENGINEER

FAHRINGER, McCARTY, GREY, INC.

1610 GOLDEN MILE HIGHWAY

MONROEVILLE, PA 15146

P 724.327.0599

CONTACT: JON SWERIGEN, RLA

JSWERINGEN@FMGINC.US

ELECTRICAL ENGINEER

SANTANGELO & LINDSAY, INC.

732 THIRD AVENUE, SUITE 102

NEW BRIGHTON, PA 15066

P 724.847.0407

CONTACT: CHRISELLEN LINDSAY, P.E.

CLINDSAY@SANTANGELOLINDSAY.COM

LANDSCAPE ARCHITECT

KLAVON DESIGN ASSOCIATES, INC.

64 S 14TH STREET

PITTSBURGH, PA 15203

P 412.394.1181

CONTACT: RACHELLE WOLF

RWOLF@KLAVONDESIGN.COM

THE GATEWAY ENGINEERS, INC.

100 MCMORRIS ROAD

PITTSBURGH, PA 15205

P 855-634-9284

CONTACT: NATHANIEL S. HAYES, PE

NHAYES@GATEWAYENGINEERS.COM

GEOTECH ENGINEER

1"=20'

Site Grading Plan - Area 2

L116

SURBAN STREET

SEE SHEET L117

T L1

L116

SITE GRADING PLAN - AREA 2

SCALE: 1" = 20'

NORTH

0' 10' 20' 40'

GRAPHIC SCALE

KEY PLAN NORTH

LEGEND

NOTES

DETERMINE STATUS OF

DRAINAGE DITCH IN

FIELD ; REMOVE IF

POSSIBLE

STABILIZE WITH STEEP

SLOPE SEED MIX, TYP.

L121

STABILIZE WITH STEEP

SLOPE SEED MIX, TYP.

L121

STABILIZE WITH STEEP

SLOPE SEED MIX, TYP.

L121

GRADING NOTES (CITY OF PITTSBURGH)

EROSION AND ELEVATED SOIL MOISTURE CONDITIONS ARE PRESENT AND WILL IMPACT THE

LONG-TERM PERFORMANCE OF THE PROPOSED PARK FEATURES. REVIEW THE FOLLOWING FOR

COUNTERMEASURES TO THE GEO-HAZARDS DESCRIBED ABOVE:

1. FILL/BACKFILL CONSIDERATIONS

1.1. GRADING AROUND THE BASKETBALL PARKING LOT AND THE NEW ADA ACCESSIBLE

PARKING STALLS, ALL TOPSOIL, VEGETATION, AND OTHER DELETERIOUS MATERIALS

SHOULD BE REMOVED.

1.2. EXPOSED SUBGRADES SHOULD BE PROOF-ROLLED WITH A MINIMUM OF TEN (10) PASSES

WITH A WALK-BEHIND (STATIC WEIGHT) VIBRATORY ROLLER COMPACTOR.

1.3. SOFT OR LOOSE ZONES DELINEATED BY THE PROOF-ROLLING SHOULD BE UNDERCUT AN

ADDITIONAL FOOT BELOW THE FINAL RESPECTIVE SUBGRADE LEVEL.

1.4. SHOULD THE UNDERCUT SUBGRADE REMAIN UNSUITABLE, IT SHOULD BE STABILIZED BY

'PUNCHING' SUITABLE, INERT (NON-CARBONACEOUS, NON-PYRITIFEROUS,

NON-EXPANSIVE, AND NON-SLAG) CRUSHED STONE MEETING THE SIZE AND GRADING

REQUIREMENTS OF AMERICAN ASSOCIATION OF STATE HIGHWAY AND TRANSPORTATION

OFFICIALS (AASHTO) NO. 1 INTO IT TO CREATE AN ADEQUATE "WORKING SURFACE".

1.5. EXCAVATED MATERIAL TO BE USED AS BACKFILL SHALL BE EITHER PLACED AND

COMPACTED IN THE WORK AREA AS SOON AS POSSIBLE TO LIMIT ITS EXPOSURE TO

RAINFALL EVENTS, OR PROTECTED WITH PLASTIC TARPS IF INSTALLATION REQUIRES

MULTIPLE DAYS.

1.6. COHESIVE FILL SHOULD BE COMPACTED TO A MINIMUM OF 95 PERCENT OF THE MAXIMUM

STANDARD PROCTOR DRY DENSITY AS DETERMINED BY ASTM TEST DESIGNATION D698,

AT WATER CONTENTS WITHIN THREE PERCENT (±3%) OF THE OPTIMUM WATER CONTENT

ESTABLISHED BY THAT TEST.

1.7. GRANULAR FILL SHOULD BE COMPACTED TO AT LEAST 70 PERCENT RELATIVE DENSITY AS

DETERMINED BY ASTM TEST DESIGNATIONS D4253 AND 4254-16.

2. STEEP SLOPES (EXCEEDING 25%) SHALL BE STABILIZED BY VEGETATION/PLANTINGS AS

SPECIFIED ON DRAWINGS L120 - L124.

2.1. FINISHED SLOPES SHALL COMPLY WITH THE FOLLOWING MAXIMUM RATIOS:

2.1.1. CUT SLOPES: 1.5:1 (HORIZONTAL TO VERTICAL)

2.1.2. FILL SLOPES: 2:1 (HORIZONTAL TO VERTICAL)

3. ROUGH ORDER OF MAGNITUDE (ROM) FOR GRADING SITE-WIDE:

3.1. OVERALL CUT VOLUME: 3,500 CY

3.2. MAX. CUT DEPTH: 4.25 FT

3.2. OVERALL FILL VOLUME: 2,000 CY

3.3. MAX. FILL DEPTH: 3.00 FT

2026-08-26 Addendum 3 - Ex. Contours3

AutoCAD SHX Text

CP2

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MAG

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MAG#4

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MAG#10

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MAG#5

AutoCAD SHX Text

MAG#3

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CONC DITCH

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ASPH DITCH

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ASPH DITCH

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CONC DITCH

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Sheets and Views

L116 GRAD 2

File details come from the government source that posted it. Updated Oct 5, 2026.