dsny/ddc spring street salt shed - dvase.org seminar/spring street salt shed.pdf · dsny/ddc spring...

DSNY/DDC Spring Street Salt Shed

PRESENTED TODelaware Valley Association of Structural Engineers

PRESENTED BYBurns Engineering, Inc.

April 4, 2017 – Anthony LoCicero, PE, LEED AP

Photo ©: Scott Beale / Laughing Squid

• Created in 1881 as Department of Street Cleaning.

• Charged with clearing garbage and human wastefrom streets to combat deadly disease and illness.

• Duties extended to snow removal 1888 after the Great White Hurricane. 60 inches of snow claimed over 200 lives.

• A parade was held in 1896 to celebrate improvements in street cleaning and garbage and snow removal. Sanitation workers were cheered as heroes.

• In 1929 the name was changed to the Department of Sanitation.

• Provided aid during recovery efforts after 9/11 and Hurricane Sandy.

New York City Department of Sanitation

Salt Shed Examples

DSNY Bronx 6

Salt Shed Examples

DSNY Brooklyn 11

Salt Shed Examples

PennDOT District 6-5

TRIBECA

Drawing ©: Dattner Architects

Spring Street Salt Shed Project Site

Preliminary Design Phase

FUNCTION

Client

FORM

Community

INITIAL

CONCEPTS


INSPIRATION

FUNCTION

Client

FORM

Community

INITIAL

CONCEPTSPOLITICS

Photo ©: W. J. Pilsak

Spring Street Salt Shed

EastPhoto ©: Field Condition


North


SouthPhoto ©: Field Conditon

• 1/2 Acre Triangular Site

• Former Site of DSNY Manhattan District 1 Garage

• 6,300 SF Building

• 70 Feet High

• 5,000 Tons of Salt

• 34 Foot Entrance Door


Architectural Program

• Faceted Concrete Walls

• Exposed Architectural Concrete Surface

• Heavily Loaded Essential Facility

• Critical Adjacent Structures

• Corrosive Industrial Environment

• Long Span Roof System

Engineering Challenges

Photo ©: Field Condition

Faceted Concrete Walls

Preliminary Sketches from Dattner

• 3D Coordinate System in lieu of Linear Dimensions

• Plumb Interior Faces to Simplify Formwork

• Wall Thickness Varying

• 9’-8” at Widest Point

• 3’-0” at the Base

• 1’-0” at the Parapets




Plan at El 14’-5”



Plan at El 46’-5”



South Wall Exterior Elevation



South Wall Interior Elevation


Structural Wall Sections

W1

W1

W1

W2

W2

W2

W3

W3


Structural Wall Sections


Custom High Density Polystyrene Forms as Molds of Profile

• Cement and Aggregate Specified as Light Gray to White in Color

• Self Consolidating Concrete with 28” Spread and Very High Cement Content to Ensure Smooth Finish

Exposed Architectural Concrete Surface

• 8’-0” High x 24’-0” Wide Placements

• Reveals at 8’-0” to Create 8’x8’ Grid

• Checkerboard Pattern - No Adjacent Within 7 Days

• Custom Stainless Steel Crack Control Device in Reveals

Exposed Architectural Concrete Surface

• Concrete Walls - 34 kip/ft

• 40” Base Slab

• 2400 psf Salt Pile

• High Lateral Forces Due to Salt Pile - 32° Angle of Repose

• Front End Loader Impact

• Designed as Essential Facility

Heavily Loaded Essential Facility

Photo ©: Albert Vecerka/Esto


• 200 and 300 Ton Caissons

• 112 Feet Deep

• 12 Foot Rock Sockets

• Pre-drilled 13 3/8” Diameter, 1/2” Thick Casings

• 75ksi Thread Bars and 7ksi Grout


Perimeter Caissons

(47)-300 Ton @ 6’-6” O.C.

Interior Caissons

(36)-300 Ton @ 12’-0” O.C.

Driveway Caissons

(37)-200 Ton @ 9’-0” O.C.


Vibration and Displacement Monitoring of Holland Tunnel

Critical Adjacent Structures

Critical Adjacent Structures

20’-7” Reinforced Concrete Wall to Protect the Historic Hollard Tunnel Vent Building from Vehicle Impacts

Photo ©: Michael Anton

• 8’-0” Tall 1/2” AR-400 Steel Armor Plates To Resist FEL Abrasion

• Sacrificial Bonded Concrete Topping

• Heavy Duty Shake-on Aggregate Hardener For Abrasion Resistance

• Epoxy Coated Reinforcement

Corrosive Industrial Environment

Photo ©: Dattner Architects

• Dense Concrete Mix to Minimize Chloride Penetration

• Spec’d 5,000 PSI Concrete

• 0.40 Water-Cementitious Materials Ratio

• 600 Lbs/CY of Cementitious Materials

• 8,000 PSI to 11,000 PSI Breaks

• Crystalline Waterproofing Admixture

Corrosive Industrial Environment

• Uninterrupted Interior Space

• Painted Weathering Steel Plate Girders, up to 52” Deep at 93’ Span

• At Shorter Spans, Allowed Contractor’s Option of WF or Plate Girders

• Concrete Pilasters on Interior Face of Walls

Long Span Roof System


• 6” Precast Hollow-Core Roof Planks

• Specially Finished Painted Underside for Corrosion Protection

• Pocket for Edge Bearing

• 3” Cast-in-Place Concrete Topping Doweled Into Walls for Lateral Diaphragm

Awards and Recognitions

Credits

End

“They will wonder, why did these people worship salt?”

- Michael Friedlander, DSNY, Director of Special Projects

dsny/ddc spring street salt shed - dvase.org seminar/spring street salt shed.pdf · dsny/ddc spring...

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