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Hollowcore – Pre-stressed Concrete Slabs

Host:
          Scott Marshall P.Eng.
Join the Discussion!




                       2
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




                                                                   3
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
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



                                                               5
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.




                                                                                                             6
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




                                                              7
What is Hollowcore




                     8
What is prestressing?




                        9
Casting machine and beds




                           10
Casting beds and saw




                       11
Method of Construction – HC on forming




                                         12
Real Canadian Superstore - Kamloops




                                      13
Real Canadian Superstore - Kamloops




                                      14
Real Canadian Superstore - Kamloops




                                      15
Method of Construction – HC on slab band




                                           16
Edmonds Centre – Burnaby




                           17
Edmonds Centre – Burnaby




                           18
Creative Structures – Surrey City Centre




                                           19
Creative Structures – The Liu Centre




                                       20
Uptown Mall in Victoria




                          21
Uptown Mall in Victoria




                Wal-Mart Store   22
Uptown Mall in Victoria




                          23
Environment

         Environment Friendly
         Hollowcore with Fly ash




                                   24
Other products use Hollowcore




                                25
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
                                                          26
John Rutherford M.Sc. P.Eng.
John.Rutherford@armtec.com

(604) 214-3253
                               27

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The Construction and Use of Precast Concrete Slabs - Armtec Ltd.

  • 1. Hollowcore – Pre-stressed Concrete Slabs Host: Scott Marshall P.Eng.
  • 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 3
  • 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 5
  • 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. 6
  • 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 7
  • 12. Method of Construction – HC on forming 12
  • 13. Real Canadian Superstore - Kamloops 13
  • 14. Real Canadian Superstore - Kamloops 14
  • 15. Real Canadian Superstore - Kamloops 15
  • 16. Method of Construction – HC on slab band 16
  • 17. Edmonds Centre – Burnaby 17
  • 18. Edmonds Centre – Burnaby 18
  • 19. Creative Structures – Surrey City Centre 19
  • 20. Creative Structures – The Liu Centre 20
  • 21. Uptown Mall in Victoria 21
  • 22. Uptown Mall in Victoria Wal-Mart Store 22
  • 23. Uptown Mall in Victoria 23
  • 24. Environment Environment Friendly Hollowcore with Fly ash 24
  • 25. Other products use Hollowcore 25
  • 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 26
  • 27. John Rutherford M.Sc. P.Eng. John.Rutherford@armtec.com (604) 214-3253 27