This tutorial by Armtec Ltd. demonstrates the specific steps and techniques used in the creation of precast concrete slabs. The informational tutorial also outlines the various ways in which concrete slabs are used in the construction of stadiums, condominiums, apartment building, bridges and walkways. Precast concrete hollowcore slabs are precision manufactured to provide an extremely dense product with a non-slip, easy-to-clean surface. Armtec provides concrete slabs that are customized to the specifications you need.

1. Hollowcore – Pre-stressed Concrete Slabs
Host:
Scott Marshall P.Eng.

2. Join the Discussion!
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3. Introduction
• Armtec is a leading global infrastructure and
construction materials company
• 48 locations in Canada, including production facilities and
offices in every region
• Global customer base with projects around the world
• Approximately 2,000 employees, $500M
• Toronto Stock Exchange trading symbol: ARF.UN
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4. Introduction
• BEBO Concrete Arches • Multi-Plate
• Bin-Wall • Paraglas Soundstop
• Bin-Wall Bridge Abutments • Platon
• Bridge Girders and Beams • Precast Concrete Steps
• Bridge-Plate • Precast Concrete Structures and
Elements
• Communications
• Precast Tunnel Liner
• Concrete Sound Fencing
• Precast Utility Pads
• Corrugated Steel Pipe
• Prestressed Hollowcore Slabs
• Double Tees
• Sports Venues
• Durisol Precast Noise Barriers
• Stormwater Treatment/Detention
• Electrical Systems
• Geosynthetics • Streetlight Bases and Traffic Control
• HDPE Pipe • Sumps and Trenches
• HDPE Tubing • Tunnel Liner Plate
• Mechanically Stabilized Earth Retaining • Ultra Flo Steel Pipe
Walls
• Water Control Products 4

5. Professional Development Hours (PDH)
• Qualifies as 1 hour Informal (20 Professional
Development Hours maximum per year)
• If you have provided an e-mail and are logged on
throughout the presentation, a formal completion
certificate will be sent to you within one week
• Enter CPD activities in the APEGBC On-line
Reporting Centre: http://www.apeg.bc.ca/prodev/online.html
• A full copy of the Continuing Professional
Development (CPD) Guideline can be viewed at:
http://www.apeg.bc.ca/prodev/documents/cpdguideline.pdf
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6. Introduction
Scott L Marshall P. Eng.
Bridge and Marine Structures Specialist
Senior Business Development Engineer
Engineered Solutions Division of Armtec
• Scott has worked the last 32 years with Armtec in Engineered Solutions promoting and selling precast
prestressed concrete bridge girders, marine structures and industrial structures.
• He was involved in the development of the hybrid system of using precast concrete Hollowcore slabs and
cast in place slab bands on many Real Canadian Superstores in BC.
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7. What is Hollowcore
• Pre-stressed, precast concrete
• Primary use is floor and roof slabs
• Continuous voids are used to reduce weight and improve
structural performance
• Cast in 1220 mm widths
• Thickness (Richmond BC)
o 203 mm
o 305 mm
o 356 mm
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8. What is Hollowcore
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9. What is prestressing?
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10. Casting machine and beds
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11. Casting beds and saw
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12. Method of Construction – HC on forming
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13. Real Canadian Superstore - Kamloops
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14. Real Canadian Superstore - Kamloops
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15. Real Canadian Superstore - Kamloops
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16. Method of Construction – HC on slab band
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17. Edmonds Centre – Burnaby
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18. Edmonds Centre – Burnaby
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19. Creative Structures – Surrey City Centre
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20. Creative Structures – The Liu Centre
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21. Uptown Mall in Victoria
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22. Uptown Mall in Victoria
Wal-Mart Store 22

23. Uptown Mall in Victoria
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24. Environment
Environment Friendly
Hollowcore with Fly ash
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25. Other products use Hollowcore
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26. Summary
• Pre-stressed, precast concrete
• Primary use is floor and roof slabs
• Reduce weight and improve structural performance
• Cast in 1220 mm widths
• Various thickness to match to loading and span
• Benefits
• Longer clear spans - space versatility
• Increase speed of construction - early occupancy
• Design for control of deflection
• Design for control of flexural cracking
• Environmental applications
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27. John Rutherford M.Sc. P.Eng.
John.Rutherford@armtec.com
(604) 214-3253
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