Diversakore Presentation 10 20 09

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Leveraging the tensile strength of steel and The compressive strength of concrete


- Lower build cost- Improve quality control- Simplify the construction process

Housh Rahimzadeh, P.E.- Structural Engineer- 40 years - John Portman Architects

Westin Peachtree Plaza


The VERSA:T: composite beam

Hollowcore plank>35’ spans

Shear studsComposite development

Tie strapsStability control during erection

Top rebarStirrup support and

crack control

1/4” Grade 50 Steel PlateEncapsulates concrete & Provides shear strength

Beam concrete 5,000 PSI

Bottom rebar Strength and fire

resistance

Structural topping (optional) Provide welded wire mesh for

Crack control on structural toppings


UnderwriterLaboratoriesULK916unrestrainedfiretest1600F-2hrs

Fire&StructuralTesting

GeorgiaTechNCState-VERSA:T2xcapacityofrein-forcedbeam


VTFlatBeamwithHollowcore

VTDroppedEdgeBeamwithSteelDeck

VTDroppedInteriorwithAAC

AACSlabCompositeSlabHollowcoreSlab

Slab options allow for design flexibility - helping owners with immediate and long term needs.


10 story Aloft Hotel - 100,000 square feet


Cast in Place Column with Temporary seat angle - angle removable after beam concrete cures


Reinforced concrete walls - provides shear control


All bolted assembly at column & beam connection - reduces field welding


Dual point shoring supporting VT beam - typically only 2 levels at any time


Hollowcore has pre-stressed tendons - enabling coordinated penetrations


Simply core drill through hollow core to accommodate Plumbing riser


More space with less building - 29’ x 28’ Bay


VT beam projects only 6” below slab

Transition beam

8” HC

6” HC


Typical partition framing

Hollowcore and VERSA:T: beam painted for exposed Loft look


VERSA:T: flat beam

Applied where flat slab is desired


Long Spans

More Headroom


25% lighter than cast in place - reduces foundation cost & time


Just in time materials supports sustainability - reduces waste and labor, clean job site


Ideal for mixed-use applications with transfer slabs & various occupancy types


Cancer Center - F WingPresbyterian Hospital Expansion

Charlotte, NC

Challenges

• Build on a 2 story existing Cancer Center• No disruption of services• Match height of adjacent buildings• Bay sizes must be adjusted• Reduce cost


VERSA:T:Composite Beam

• Firespray not required• Low profile - 6” projection• Eliminates formwork• Exceptional strength


KoreFlexComposite Tube Columns

• Firespray not required• Compact - small footprint• Installs quickly (2 level lifts)• Eliminates formwork• Exceptional strength


Deep Dek - CSiComposite Metal Deck

• 33’ spans - • 11” slab• Firespray not required• Panelized to erect quickly• Eliminates formwork• Exceptional strength


Composite Beam and Slab are 2 hr ratedFire spray not required!


Transfer Beams

• Supports 4 levels• Very shallow• Continuous design• Very useful in mixed use


VERSA:T: Edge Beam

• Supports slab• Creates a pour stop• Supports cladding


Beams poured initially to reduce shoring


10’ floor to floor requirements to match existing structure


Structure Topped out June 4, 2009


•CommercialOffice

•Multi-familyresidential

•Healthcare•Hospitality

•Parking

•Mixed-use

•Military

We Help You Select the Right System for the Right Application

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How can we help?

- Conceptual designs- Cost estimating- Subcontractor coordination- Structural design support

Documents

Diversakore Presentation 10 20 09