Precast Prestressed Hollowcore Slabs
February 26, 2014
Scott L Marshall P. Eng.
&
Ebi Moradi P. Eng.
JOIN THE DISCUSSION!

2
CPD CREDIT CERTIFICATES
• Qualifies in Most Jurisdictions in Canada & USA for 1 Hour Technical Informal
• Formal completio...
Introduction
Scott L

Scott Marshall P. Eng.
Senior Business Development Engineer
Engineered Precast Solutions
Armtec

Sco...
Introduction
Ebi Moradi P. Eng.
Senior Sales Engineer & Project Manager
Engineered Precast Solutions
Armtec
Ebi has over 2...
Introduction
Armtec is a leading global infrastructure and
construction materials company
•

48 locations in Canada, inclu...
Introduction…legacy Con-Force
•

Precast prestressed Double Tees

•

Precast columns, beams and spandrel panels.

•

Preca...
Armtec Richmond BC plant

Armtec bought Con-Force
Structures Limited in
October 2007

10
Current Project – Evergreen Line

$17 Million Supply Contract, 1000 Segments

11
Current Project – Evergreen Line

Yarding of Match Cast Segments

12
Port Mann Water Supply Tunnel Liners
1,000 Rings, 6,000 Segments

13
Port Mann Water Supply Tunnel Liners

14
What is Prestressing?

15
What is Prestressing?

16
Plant Prestressing Beds

17
What is Hollowcore (HC) ?
Precast Prestressed Hollowcore slabs
•

Primary use is floor and roof slabs
• Continuous voids a...
Available Hollowcore (HC) depths
•

8 inch (203mm) slabs span 30 feet (9m) for 100 PSF (4.8KN/m2)

•

12 inch (305mm) slab...
Benefits of Hollowcore
1. Longer clear spans…versatility of
space.
2. Fast track construction…$’s to owners
3. Design for ...
Structural Systems with Hollowcore

1. Hollowcore on cast in place slab
bands and columns.
2. Hollowcore on steel columns ...
Hollowcore casting beds

4 casting beds of 300 feet long
22
Hollowcore casting beds

23
Hollowcore casting machine

24
Hollowcore saw

Can saw cut longitudinally and skew cuts

25
HC on cast in place formwork

26
Real Canadian Superstore - Kamloops - 1999

27
Real Canadian Superstore - Kamloops - 1999

28
Real Canadian Superstore - Kamloops - 1999

29
Real Canadian Superstore - Kamloops - 1999

30
Real Canadian Superstore - Kamloops - 1999

31
Real Canadian Superstore - Kamloops - 1999

36 foot by 30 foot gridlines for columns

32
Cast in place beams around perimeter

Cast in place cord reinforcing at perimeters

33
Real Canadian Superstore –Richmond - 2000

Installation inside existing building

34
Real Canadian Superstore Projects
1. South West Marine Drive – 1988
2. Kamloops – 1999
3. Richmond – 2000

4. Coquitlam – ...
Electronic Arts – Burnaby - 2004

36
Electronic Arts – Burnaby - 2004

37
Electronic Arts – Burnaby 2004

38
4800 Kingsway - 2005

39
Richmond Speed Skating Oval - 2006
First use of 14 inch Hollowcore

40
Richmond Speed Skating Oval - 2006
First use of 14 inch Hollowcore

41
HC on first stage slab band

42
Edmonds Centre – Burnaby - 1992

43
Edmonds Centre – Burnaby - 1992

44
Wal-Mart South Surrey – 2007

45 foot by 45 foot grid

45
Uptown Mall in Victoria - 2008

Wal-Mart - 45 foot by 45 foot grid lines

46
Uptown Mall in Victoria - 2008

Wal-Mart 45 foot by 45 foot grid lines

47
Uptown Mall in Victoria - 2008

48
Uptown Mall in Victoria - 2008

49
Anvil Project New Westminster - 2007

Hollowcore and precast frames

50
Anvil Project New Westminster - 2007
Precast frames

51
Anvil Project New Westminster - 2007

52
Anvil Project New Westminster - 2007

53
Colebrook Business Centre - 2007

54
Colebrook Business Centre - 2007

Hollowcore on precast beams and columns

55
The Liu Centre - 2000

56
The Liu Centre - 2000

57
The Liu Centre - 2000

58
HC on steel – Surrey City Centre - 2001

59
HC on steel – Surrey City Centre - 2001

10 foot cantilever on 12 inch Hollowcore

60
HC on steel – Villa Parkade - 2008

61
HC on steel – Villa Parkade - 2008

62
Hollowcore and Termobuild

www.termobuild.com
63
“D” Girder System…Marriot Hotel…Edmonton

64
D”” Girder System…Marriot Hotel…Edmonton

65
Summary
• Hollowcore
•

Primary use is floor and roof slabs
• Reduce weight and improve structural performance
• Cast in 1...
Hollowcore

QUESTIONS?

STORMWATER MANAGEMENT
UPCOMING MONTHLY WEBINARS
Monthly Armtec Webinars:

www.armtec.com/webinars/
Upcoming:
March 21, 12pm EST | Bridge Plate
R...
Join Us on Social Media!
Follow us on social media to learn more
about our company, projects and people,
while getting all...
Contact Your Local Rep:
www.armtec.com/contact-us
Today’s Host:
Ebi Moradi
ebi.moradi@armtec.com
604-214-3253

70
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Precast Prestressed Hollowcore Slabs Seminar - Armtec

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Hollowcore has been around for over 40 years. Learn the basics of Hollowcore as well as some new ideas adapting to environmental needs (LEED) and energy efficiency from this tutorial.

Hollowcore attributes include versatility, creation of long spans and open spaces, fast track construction, control of flexural cracking, zero tension possible in bottom flange, minimal site labour, and low long-term maintenance costs or, in short, VOS-C.

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Precast Prestressed Hollowcore Slabs Seminar - Armtec

  1. 1. Precast Prestressed Hollowcore Slabs February 26, 2014 Scott L Marshall P. Eng. & Ebi Moradi P. Eng.
  2. 2. JOIN THE DISCUSSION! 2
  3. 3. CPD CREDIT CERTIFICATES • Qualifies in Most Jurisdictions in Canada & USA for 1 Hour Technical Informal • Formal completion certificates are emailed within one week of attending • Check your local guidelines if unsure of your requirements Email Your Attendance List: • Full Name • Title • Email webinars@armtec.com
  4. 4. Introduction Scott L Scott Marshall P. Eng. Senior Business Development Engineer Engineered Precast Solutions Armtec Scott has worked the last 35 years with Armtec in Engineered Precast Concrete Solutions in marketing and sales, providing technical and budgeting advice to Engineers and Contractors in regards to precast prestressed concrete bridge girders, marine structures and industrial structures. Scott was involved in the development of the hybrid system of using precast concrete Hollowcore slabs and cast in place slab bands and columns on most of the Real Canadian Superstores in BC and most recently the Uptown Mall in Victoria. 4
  5. 5. Introduction Ebi Moradi P. Eng. Senior Sales Engineer & Project Manager Engineered Precast Solutions Armtec Ebi has over 20 years experience in precast concrete in sales, marketing and operations, providing technical and budgeting advice to clients in regards to various application of precast and pre-stressed concrete components such as parking structures, architectural claddings, insulated wall panels, and Hollowcore. 5
  6. 6. 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 6
  7. 7. Introduction…legacy Con-Force • Precast prestressed Double Tees • Precast columns, beams and spandrel panels. • Precast prestressed Bridge Girders • Precast prestressed stay in place deck panels. • Precast prestressed Hollowcore slabs. • Precast prestressed piles. • Architectural panels. • Insulated wall panels • RECO MSE walls. • EPS wall panels. • Stadium bleacher seats. • Concrete Sound Fencing….NEW! • Durisol Noise Barriers…NEW! 7
  8. 8. Armtec Richmond BC plant Armtec bought Con-Force Structures Limited in October 2007 10
  9. 9. Current Project – Evergreen Line $17 Million Supply Contract, 1000 Segments 11
  10. 10. Current Project – Evergreen Line Yarding of Match Cast Segments 12
  11. 11. Port Mann Water Supply Tunnel Liners 1,000 Rings, 6,000 Segments 13
  12. 12. Port Mann Water Supply Tunnel Liners 14
  13. 13. What is Prestressing? 15
  14. 14. What is Prestressing? 16
  15. 15. Plant Prestressing Beds 17
  16. 16. What is Hollowcore (HC) ? Precast Prestressed Hollowcore slabs • Primary use is floor and roof slabs • Continuous voids are used to reduce weight and improve structural performance 18
  17. 17. Available Hollowcore (HC) depths • 8 inch (203mm) slabs span 30 feet (9m) for 100 PSF (4.8KN/m2) • 12 inch (305mm) slabs span 40 feet (12m) for 100 PSF (4.8KN/m2) • 14 inch (356mm) slabs span 45 feet (13.7m) for 100 PSF (4.8KN/m2) • 10 inch (254mm)…subject to machine availability. 19
  18. 18. Benefits of Hollowcore 1. Longer clear spans…versatility of space. 2. Fast track construction…$’s to owners 3. Design for control of deflection. 4. Design to limit tensile stress in bottom flange…corrosive environments 5. Immediate working platform on site. 6. Manages field skilled trade shortages. 7. Not impacted by high floor to floor heights. 20
  19. 19. Structural Systems with Hollowcore 1. Hollowcore on cast in place slab bands and columns. 2. Hollowcore on steel columns and beams. 3. Hollowcore on precast columns and beams. 4. Hollowcore on masonry walls. 21
  20. 20. Hollowcore casting beds 4 casting beds of 300 feet long 22
  21. 21. Hollowcore casting beds 23
  22. 22. Hollowcore casting machine 24
  23. 23. Hollowcore saw Can saw cut longitudinally and skew cuts 25
  24. 24. HC on cast in place formwork 26
  25. 25. Real Canadian Superstore - Kamloops - 1999 27
  26. 26. Real Canadian Superstore - Kamloops - 1999 28
  27. 27. Real Canadian Superstore - Kamloops - 1999 29
  28. 28. Real Canadian Superstore - Kamloops - 1999 30
  29. 29. Real Canadian Superstore - Kamloops - 1999 31
  30. 30. Real Canadian Superstore - Kamloops - 1999 36 foot by 30 foot gridlines for columns 32
  31. 31. Cast in place beams around perimeter Cast in place cord reinforcing at perimeters 33
  32. 32. Real Canadian Superstore –Richmond - 2000 Installation inside existing building 34
  33. 33. Real Canadian Superstore Projects 1. South West Marine Drive – 1988 2. Kamloops – 1999 3. Richmond – 2000 4. Coquitlam – 2001 5. North Surrey - 2001 6. Abbotsford – 2003 7. North Delta – 2003 8. Mission - 2005 35
  34. 34. Electronic Arts – Burnaby - 2004 36
  35. 35. Electronic Arts – Burnaby - 2004 37
  36. 36. Electronic Arts – Burnaby 2004 38
  37. 37. 4800 Kingsway - 2005 39
  38. 38. Richmond Speed Skating Oval - 2006 First use of 14 inch Hollowcore 40
  39. 39. Richmond Speed Skating Oval - 2006 First use of 14 inch Hollowcore 41
  40. 40. HC on first stage slab band 42
  41. 41. Edmonds Centre – Burnaby - 1992 43
  42. 42. Edmonds Centre – Burnaby - 1992 44
  43. 43. Wal-Mart South Surrey – 2007 45 foot by 45 foot grid 45
  44. 44. Uptown Mall in Victoria - 2008 Wal-Mart - 45 foot by 45 foot grid lines 46
  45. 45. Uptown Mall in Victoria - 2008 Wal-Mart 45 foot by 45 foot grid lines 47
  46. 46. Uptown Mall in Victoria - 2008 48
  47. 47. Uptown Mall in Victoria - 2008 49
  48. 48. Anvil Project New Westminster - 2007 Hollowcore and precast frames 50
  49. 49. Anvil Project New Westminster - 2007 Precast frames 51
  50. 50. Anvil Project New Westminster - 2007 52
  51. 51. Anvil Project New Westminster - 2007 53
  52. 52. Colebrook Business Centre - 2007 54
  53. 53. Colebrook Business Centre - 2007 Hollowcore on precast beams and columns 55
  54. 54. The Liu Centre - 2000 56
  55. 55. The Liu Centre - 2000 57
  56. 56. The Liu Centre - 2000 58
  57. 57. HC on steel – Surrey City Centre - 2001 59
  58. 58. HC on steel – Surrey City Centre - 2001 10 foot cantilever on 12 inch Hollowcore 60
  59. 59. HC on steel – Villa Parkade - 2008 61
  60. 60. HC on steel – Villa Parkade - 2008 62
  61. 61. Hollowcore and Termobuild www.termobuild.com 63
  62. 62. “D” Girder System…Marriot Hotel…Edmonton 64
  63. 63. D”” Girder System…Marriot Hotel…Edmonton 65
  64. 64. Summary • Hollowcore • 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 flexural cracking • Less demand for field labour 66
  65. 65. Hollowcore QUESTIONS? STORMWATER MANAGEMENT
  66. 66. UPCOMING MONTHLY WEBINARS Monthly Armtec Webinars: www.armtec.com/webinars/ Upcoming: March 21, 12pm EST | Bridge Plate Ron Prychitko Randy McDonald March 28, 1pm EST | Noise Walls Tenative STORMWATER MANAGEMENT
  67. 67. Join Us on Social Media! Follow us on social media to learn more about our company, projects and people, while getting all the latest Armtec and industry news.
  68. 68. Contact Your Local Rep: www.armtec.com/contact-us Today’s Host: Ebi Moradi ebi.moradi@armtec.com 604-214-3253 70
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