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What is a “Cellular Beam” ?
A cellular Beam is an advanced development of the castellated beam design
A castellation is a technique used to expand a standard section steel beam without adding any weight or wastage
Castellation Process
The beam, once assembled, will have a deeper section with hexagonal holes through the web
Only weak point of the design is the corners of the hexagonal holes, which do not distribute loads evenly, thus the development of Cellular Beams with round
Cellular Process
The result is a beam that is 50% Deeper and 50% Stronger than the original member without any extra weight gain
Only weak point of the design is the corners of the hexagonal holes, which do not distribute loads evenly, thus the development of Cellular Beams with round
Cellular Fabrication
Load Testing
CNC profile cutting
Finished cut, ready for separating
Cambering
Cambering can be done easily during production process
Creating Curves
Curved Beam
Curves can be formed simply as part of the manufacturing process.
Creating Tapers
By cutting the web along a diagonal a tapered section can be formed.
Taper Applications
Composite Floor Beams
Asymmetric (Different size members top & bottom)
Sample Connection
Service Ducting
Lower Floor to Floor
Applications
Cost Considerations for Long Span Construction
Long Spans with Floor Type Loading
Multi-level Buildings
Parking Structures
Industrial Flooring
Specialized Roof Design
Schools, Churches, Convention Centers
Architectural Exposed Steel
Arches and Tapers
Interior and Exterior
Lighter Weight Building materials reduce on-site crane requirements.
Longer spans will Minimize Columns
Reducing Number of Pieces Reduces Fabrication Costs and Erection costs.
Speed of Construction Reduces Time Dependent Costs.
Reduce Foundation Requirements
Value Engineering
Look at Possibilities
Increase Spans
Eliminate Columns
Reduce Number of Pieces
Minimize Foundations
Applications Summary
Fire Rated Assemblies and Protection
For Strength design – Economical for Spans of 45 feet and Greater
For Vibration design – Economical for Spans of 30 feet and Greater
Reduce Structure Weight with Improved Vibration Response
Save Material Costs plus Erection Costs
Utilize Openings for MEP to reduce Floor to Floor
Economical Exposed Structure
Roof Assembly :
Membrane Ceiling (P225)
1 1/2 Hrs.
Floor Assembly :
Cementitious Spray-on (N784)
Intumescent Spray-on (N831)
Up to 3 Hrs.
Cementious Coatings
Thin Film Fire Protection
Spray Applied Fiber or Cementious coatings provide up to 4 hour ratings
Are not normally considered for architecturally exposed design
Intumescent Coatings: A form of passive fire protection that remains inactive until subjected to the heat and flames of a fire.
How Intumescent Coatings Work
Intumescent Paint
At temperatures above 400°F the system begins to char.
Char expands 30 to 50 times original thickness, creating insulating blanket.
