Attachment 6 - For Information Only -Foundation Design for Judicial Trail Pedestrian Bridge.pdf

GDE Project numberSHEETREV. DATEDATE GDE Project numberSHEETSCALEREV. DATEDATE

GDE

GDEGEO DESIGN & ENGINEERING , INC,

KNOWLEDGE IS OUR FOUNDATION

14301 Sullyfield Circle Suite I

Phone: 703-817-0299 Cell: 703-606-8351 Email: mak@geodesigneng.com

Chantilly, Virginia 20151

E23056

FOUNDATION DESIGN - JUDICIAL DRIVE TRAIL

PEDESTRIAN BRIDGE

09-19-2023

COVER SHEET

DRAWING INDEX

1. COVER SHEET

2. STRUCTURAL NOTES

3. SITE PLAN

4. BRIDGE PLAN

5. CAISSON PLAN

6. CROSS SECTION A-A

7. CROSS SECTION B-B & DETAILS

NTS

FOUNDATION DESIGN - JUDICIAL DRIVE TRAIL PEDESTRIAN BRIDGE

CLIENT

Public Works Department, City of Fairfax

Suite #201, 10455 Armstrong Street

Fairfax, VA 22030-3630

PREPARED BY:

PROFESSIONAL DESING GROUP, INC.

4124 Walney Road, Suite M

Chantilly, Va. 20151 in Collaboration With

GEO DESIGN & ENGINEERING, INC.

14301 Sullyfield Circle, Suite I

Chantilly, Virginia 20151

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9-26-2023

DIVISION 1 - GENERAL REQUIREMENTS

1. All construction shall be in compliance with the provisions of the 2018 IBC and Virginia Statewide Building Code

(VUSBC) .

2. Work performed shall comply with these general notes unless otherwise noted on plans.

3. Work performed shall comply with all applicable local and state codes, ordinance, and regulations.

4. On-site verification of all dimensions and conditions shall be the responsibility of the general contractor and his subcontractors.

5. Discrepancies: the contractor shall compare and coordinate all drawings; when, in the opinion of the contractor, a discrepancy exists he shall promptly report it to the Designer for proper adjustment before proceeding with the work.

6. Omissions: in the event certain features of the construction are not fully shown on drawings, their construction shall be the same character as conditions that are shown or noted.

7. All work is to be performed in a professional manner and in accordance with standard practice and shall be in strict compliance with manufacturer's specifications and/or recommendations.

8. Dimensions shall be read or calculated and never scaled. All dimensions are rough unless noted otherwise.

9. All dimensions shall be reviewed on structural drawings. AOR notified of any discrepancies and inconsistencies between disciplines.

10. The general and sub-contractors shall carefully examine the drawings inspect the size and acquaint themselves with all governing ordinances, laws, etc. and otherwise familiarize themselves with all matters which affect performance of the work.

11. The structural integrity of the caissons & beams/ abutments is dependent upon completion according to the plans and specifications. The structural engineer of the record assumes no liability for the structure during the construction. The method of construction and sequence of operations is the sole responsibility of the contractor. The contractor shall supply any necessary bracing, guys, etc. to properly brace the structure against wind, dead and live loads until the building is completed according to the plans specifications. Any questions regarding temporary bracing requirements should e forwarded to a structural engineer for review.

SOILS

1. The Caissons end bearing capacity shall be 5,000 psf. (GDE Report E23056)

2. Caisson bearing elevation shall be at 5 feet minimum below adjacent sanitary invert elevation, estimated at 369 feet at start of bridge (west side ) and 367 feet end of bridge (east side). All elevations tobe verified in the field.

DIVISION 2 - CONCRETE

1. Structural concrete shall be constructed in accordance with the requirements of IRC Chapter 19 and ACI 318 as amended in Section 1905 of this code. All concrete construction including, detailing, fabrication, placement of reinforcing, mixing, handling, placing, finishing, and curing shall conform to ACI "Structural Concrete for Building" (ACI 301), ACI

"Manual of Standard Practice for detailing Reinforced Concrete Structures" (ACI-315), and "ACI Building Code

Requirements for Reinforced Concrete" (ACI-318). All reinforcing shall conform to the CRSI Specifications Handbook.

Concrete placement shall meet all cold weather and hot weather requirements outline in ACI 306 & 305 respectively.

2. All Concrete shall conform to ASTM C94. Minimum compressive strength shall be as follows

- Caisson 5,000 psi

- Beam/ Abutment 6,000 psi

3. Maximum aggregate size for regular concrete shall be ¾' and peal-gravel concrete shall be 3/8". Aggregate for regular weight concrete shall conform to ASTM C33 and lightweight concrete shall conform ASTM C330.

4. Owner shall retain the services of a qualified testing agency to provide testing of concrete to include compressive strength, temperature, slump and air entrainment.

5. Contractor shall provide concrete mix design data for each type and strength of concrete shown in the structural drawings. The mix design data should include: concrete strength, slump, air entrainment, proposed aggregates, admixtures, and laboratory test data.

6. Concrete placement should be monitored by GDE personnel or another third party inspection agency. Concrete shall be tested for slump, temperature and air entrainment

7. Concrete cylinders should be fabricated for caissons and beams for laboratory curing and testing for compressove strength at 7 and 28 days

8. The caissons should have a minimum diameter of 36 inches

9. Casing would be needed to prevent the collapse of the sides into the caisson hole

10. Drainage measures should be provided during caisson drilling and construction.

11. Concrete for the caissons

Reinforcement Steelp

1. All reinforcing steel shall conform to ASTM-A615, Grade 40 unless notes otherwise.

2. Fabricate and provide standard supporting accessories in accordance with the ACI Manual of Standard Practice for

Detailing Reinforced Concrete Structures ACI 315.

Concrete Protection for Reinforcement

1. Reinforcing bars to have concrete cover as follows:

Footings and other concrete poured against earth………. 3"

Formed concrete exposed to air for bars larger than #5……….2"

Formed concrete exposed to air for bars for #5 or smaller bars……….1 ½"

GDE Project numberSHEETREV. DATEDATE GDE Project numberSHEETSCALEREV. DATEDATE

GDE

GDEGEO DESIGN & ENGINEERING , INC,

KNOWLEDGE IS OUR FOUNDATION

14301 Sullyfield Circle Suite I

Phone: 703-817-0299 Cell: 703-606-8351 Email: mak@geodesigneng.com

Chantilly, Virginia 20151

E23056

FOUNDATION DESIGN - JUDICIAL DRIVE TRAIL

PEDESTRIAN BRIDGE

09-19-2023

STRUCTURAL NOTES

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SITE PLAN

GDE Project numberSHEETREV. DATEDATE GDE Project numberSHEETSCALEREV. DATEDATE

GDE

GDEGEO DESIGN & ENGINEERING , INC,

KNOWLEDGE IS OUR FOUNDATION

14301 Sullyfield Circle Suite I

Phone: 703-817-0299 Cell: 703-606-8351 Email: mak@geodesigneng.com

Chantilly, Virginia 20151

E23056

FOUNDATION DESIGN - JUDICIAL DRIVE TRAIL

PEDESTRIAN BRIDGE

09-19-2023

1":50'

BRIDGE

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CONCRETE DECK

BOTTOM CHORD

BRACE DIAGONAL

DECK BRACING FRAMING

FLOOR BEAM

SIDE DAM

BRIDGE LENGTH 70'-0"

BRIDGE PLAN

CONCRETE BEAM

BRIDGE DESIGN BY OTHERS

CAISSON

CAISSON

CAISSON CAISSON

70'-2"

GDE Project numberSHEETREV. DATEDATE GDE Project numberSHEETSCALEREV. DATEDATE

GDE

GDEGEO DESIGN & ENGINEERING , INC,

KNOWLEDGE IS OUR FOUNDATION

14301 Sullyfield Circle Suite I

Phone: 703-817-0299 Cell: 703-606-8351 Email: mak@geodesigneng.com

Chantilly, Virginia 20151

E23056

FOUNDATION DESIGN - JUDICIAL DRIVE TRAIL

PEDESTRIAN BRIDGE

09-19-2023

BRIDGE PLAN

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27" SEWER

CAISSON

PLAN

BRIDGE LENGTH 70'-0"

END (EAST SIDE) OF BRIDGE

START (WEST SIDE) OF BRIDGE

CAISSONS ARE TO BE SUPPORTED

AT BEARING DEPTHS THAT ARE 5

FEET MINIMUM BELOW SANITARY

INVERT ELEVATION AT EACH END OF

BRIDGE.

CAISSON AT START (WEST SIDE) OF BRIDGE TO BE

SUPPORTED AT BEARING ELEVATION OF 369 FEET.

SANITARY INVERT AND BEARING ELEVATIONS NEED

TO BE VERIFIRED IN FIELD.

CAISSONS AT END (EAST SIDE) OF BRIDGE TO

BE SUPPORTED AT BEARING ELEVATION OF

367 FEET. SANITARY INVERT AND BEARING

ELEVATIONS NEED TO BE VERIFIED IN FIELD.

CAISSON

BRIDGE ABOVE

A

A

B

GDE Project numberSHEETREV. DATEDATE GDE Project numberSHEETSCALEREV. DATEDATE

GDE

GDEGEO DESIGN & ENGINEERING , INC,

KNOWLEDGE IS OUR FOUNDATION

14301 Sullyfield Circle Suite I

Phone: 703-817-0299 Cell: 703-606-8351 Email: mak@geodesigneng.com

Chantilly, Virginia 20151

E23056

FOUNDATION DESIGN - JUDICIAL DRIVE TRAIL

PEDESTRIAN BRIDGE

09-19-2023

CAISSON PLAN

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18'-8"

21'-8"

CONCRETE BEAM

CAISSON

3'

CROSS SECTION A-A

BRIDGE

DESIGNED BY OTHERS

Ø 27" SEWER

3' 5' 2'-3"

8'-6"

B

B

ABUTMENT

DECK

GDE Project numberSHEETREV. DATEDATE GDE Project numberSHEETSCALEREV. DATEDATE

GDE

GDEGEO DESIGN & ENGINEERING , INC,

KNOWLEDGE IS OUR FOUNDATION

14301 Sullyfield Circle Suite I

Phone: 703-817-0299 Cell: 703-606-8351 Email: mak@geodesigneng.com

Chantilly, Virginia 20151

E23056

FOUNDATION DESIGN - JUDICIAL DRIVE TRAIL

PEDESTRIAN BRIDGE

09-19-2023

CROSS SECTION A-A

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CROSS SECTION B-B

(10) #8

#3 STIRRUP @

12" O.C.

OR SPIRALTIE

3" MIN

COVER

(2)#10

(3) #10

(3) #10

(6) #10

#4 @ 12" O.C.

STIRRUP

3'

1'-5" 1'-7"

(3)#10

BEARING PLATE

1'-0"X 1'-0" X 0.75"

WITH (4) Ø 0.75 ",

9" LONG HEADED

ANCHORS

(10) #8 WITH

3" STIRRUP @ 12" O.C.

OR SPIRAL TIE

3'

CAISSON SECTION

DECK

DETAIL

1'-5" 1'-7"

"3"6"

DETAIL

BEARING

PLATE

DECK

1"

GDE Project numberSHEETREV. DATEDATE GDE Project numberSHEETSCALEREV. DATEDATE

GDE

GDEGEO DESIGN & ENGINEERING , INC,

KNOWLEDGE IS OUR FOUNDATION

14301 Sullyfield Circle Suite I

Phone: 703-817-0299 Cell: 703-606-8351 Email: mak@geodesigneng.com

Chantilly, Virginia 20151

E23056

FOUNDATION DESIGN - JUDICIAL DRIVE TRAIL

PEDESTRIAN BRIDGE

09-19-2023

CROSS ECTION B-B

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