2012 9 philadelphia museum of art construction project

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Philadelphia Museum of Art Art Handling Facility Carl D. Freedman, AIA – Aegis Property Group September 17, 2012

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2012 9 Philadelphia Museum of Art Construction Project

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Page 1: 2012 9 Philadelphia Museum of Art Construction Project

Philadelphia Museum of ArtArt Handling Facility

Carl D. Freedman, AIA – Aegis Property Group

September 17, 2012

Page 2: 2012 9 Philadelphia Museum of Art Construction Project

PRESENTATION OF FACILITY ISSUES WITH THE DEVELOPMENT

OF THE

NEW ART HANDLING FACILITY

PROJECT DEVELOPMENT TEAM:

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New vs. Existing Loading Dock

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Level C

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Sections

APPROXIMATE EXISTING GRADE

NEW UTILITY TRENCH

APPROXIMATE LINE OFROCK

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VIBRATIONS, DEMOLITION & BLASTING

• Vibration standards established in preliminary testing and research

• Equipment testing completed to determine equipment that could be used

• Test blasting competed to determine charge sizes and distances

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• Vibrations at the art work were limited to 0.15 ppv for sustained vibrations (over 5 second in duration)

• Normally, ppv values for blasting would be double sustained levels, but, it was decided to keep the 0.15 ppv for all standards

• Normal ppv values for blasting near a building would be between 2.0 ppv and 3.0 ppv

VIBRATION STANDARDS

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Machine Used to Cut Interior Rock and TrenchesWire on the Ground is for Vibration Testing

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Test Blast Results Chart – for 0.15 PPV we could blast up to 73’ from the building

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BLAST LAYOUT PLAN

Plan created to locate blasting sites and identify where relief would be available

Orange a green locations at bottom where additional incremental tests done with the first production blasts

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Work Plan with blasting area, rock anchor installation, rock removal, electrical trenching

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Vibra-Tech response to Work Plans with a vibration sensor location plan

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BLASTING

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Vibration Monitoring results from Blast #11

Vibration Warning Level

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INTERIOR DEMOLITION – DUST CONTROL

• Early selective demolition on B Level before GMP was established

• 3D model of existing conditions created to trace existing lines

• Vibration and Environmental Controls• Temporary shoring conditions• Removal of existing columns

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Structural Model

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HVAC Model

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Removal of Overburden – Test Pit in Northwest cornerThis location was used to access the B Level for Interior Excavation

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Section B1 – Hammering of Concrete Slab

Temporary Storm Line During Excavation

Page 20: 2012 9 Philadelphia Museum of Art Construction Project

Section B1 – Lowering of Floor Elevation

Page 21: 2012 9 Philadelphia Museum of Art Construction Project

Interior Electrical Trenching Through Rock

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Saw-cutting of Foundations and Retaining WallsColumn to be Placed on New Foundation

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Temporary Shoring Structure for Column Foundation Removal

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EXTERIOR EXCAVATION & DEMOLITION

• Stone wall deconstruction– Historic Preservation Issues / Laser Cleaning– Stone condition and deterioration– Stone testing

• Overburden removal• Rock removal process

– Blasting– Sawing– Grinding

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Laser Cleaning

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Removing the First Stone from Terrace Wall

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Sandy debris – Precursor of a small issue with a few of the existing stone.

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Saw Cutting Terrace Wall

Page 30: 2012 9 Philadelphia Museum of Art Construction Project

End Results of Terrace Wall Cut

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ROCK EXCAVATION – HIGHER ELEVATIONS

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Installation of First Dewey-Dag Bar Rock Anchors

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ROCK EXCAVATION CLOSE TO EXISTING BUILDING

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This opening is the original access to B Level in the earlier slide.

Line of original footing.

Temporary shoring micropile.

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LOGISTICS, WATERPROOFING& CONCRETE

• Logistics on a very tight site• Excavation efforts were not complete, but,

concrete needed to start to keep schedule• Utility trench ran continuously through hard

rock under the entire building addition• Unique conditions for waterproofing and

building close to rock walls

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Permanent Shoring for Future Corridor Penetration

THIS AREA TO BE REMOVED FOR FUTURE ELEVATOR

ADDITIONAL BEAM TO BE INSTALLED TO CARRY NEEDLE BEAMS

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TIGHT SITE LOGISTICS – POURING CONCRETE, EXCAVATING UTILITY TRENCH, ROCK REMOVAL AGAINST BUILDING

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3D SURVEY & MODELING

• Scanning less invasive• Less costly than hand architectural or

engineering surveying• Accuracy with 1/8”• Have imaging of your entire facility• Can tailor the modeling completed to needs

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THANK YOU AND HAVE A GREAT CONFERENCE