Precast Concrete Steps Construction Tutorial by Armtec Ltd.
- 1. Residential Steps and Decks
August 10 2011
Melissa Pressnail B.Eng
James Regier
Ebi Moradi P.Eng
Tony Hof
- 2. Residential Steps and Decks
1.About Armtec
2.What are Precast Steps ?
3.Benefits
4.Steps vs. Decks
5.Finishes
6.Support Requirements
7.Site Preparation
8.Installation
9.The Process
10.Testimonials
11.Full Package From Armtec
2
- 5. About Armtec
• 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
5
- 6. 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 6
- 8. What are Precast Steps ?
“Precast concrete is a
construction product produced by
casting concrete in a reusable
mold or form which is then cured
in a controlled environment,
transported to the construction
site and lifted into place”
- wikipedia
8
- 10. Benefits
Why use Precast Steps ?
•Durability
•Ease of installation
•Quality appearance
Fully customizable
•Speed of install
• In and out in less than an hour
• All weather install
•Consistent factory quality &
certification
• CSA, ISO
• Consistent finish quality
• Climate controlled manufacturing 10
environment
- 12. Steps vs Decks
Steps
• The risers are cast monolithic
with the top slab
• The risers are the same width as
the front edge of the top slab
• Available in any size with any
number of risers
• Angles available on top slab
12
- 13. Steps vs Decks
Decks (Verandah)
• The risers are cast separate from the verandah
• The risers are not necessarily the same width as the verandah
• Angles on verandah is available
• Available in recessed configuration for brick or rock feature
13
- 15. Finishes
Etched Risers
• Broom surface on treads and
top slab as a result of face up
casting. The vertical surfaces
on the risers between the
bullnose and the tread are
exposed
15
- 16. Finishes
Etched Sides & Risers
• Broom surface on treads and
top slab
• The vertical surfaces on the
risers between the bullnose
and the tread are exposed
• All vertical surfaces on the
risers between the bullnose &
the tread and on the sides of
the unit below the bullnose are
exposed
16
- 17. Finishes
Recessed Deck
• Broom surface on treads
and top slab as a result of
face up casting
• The vertical surfaces on
the risers between the
bullnose and the tread
may be plain or exposed
• The top slab overhangs
the deck apron to allow
brick or stone to be built
up on vertical face
17
- 21. Support Requirements
• Brackets
• Smaller Steps (up to 4’ deep and 8’
wide)
• Smaller Decks (up to 4’ deep and
8’ wide)
• Post loads require double brackets
• Piles
• Minimum requirement for larger
steps and decks
• Option for post loads
• Wing Walls
• Extension of the foundation wall
• Best option for any installation
21
- 23. Site Preparation
Wing Walls
• When used with overpoured deck aprons, they allow for grade variance,
eliminating the void under the deck
• Allows backfilling prior to step installation
23
- 25. Site Preparation
Access to homes and sites
• Siding should be installed after step installation. Siding contractors
should not be moving steps for siding installation.
25
- 27. Installations
• Rear mount knuckle booms on 8 ½ ton tandem truck
• Steps and decks are installed using the inserts on the top slab
27
- 29. The Process
• Orders are received by the customer service representatives
29
- 31. The Process
• CAD drawings for
production are
produced
• Orders are sent to
production
31
- 32. The Process
• Shape is laid out
• Rebar is placed
• Lifting inserts placed on rebar
Step Form Deck Form
32
- 39. Summary
• Ease / speed of installation
• All weather install
• Installation in less than a half hour
• Superior Appearance
• Consistent finish quality
• Highly customizable
• Designed to Perform:
• Produced in controlled manufacturing environment
• Built to last
39
- 40. Full Package From Armtec
• Platon
• Sound Walls
• Lock + Load Retaining Walls
• Prestressed Hollowcore Slabs
• Window Wells and Basement Stairs
40
- 41. Full Package From Armtec - Platon
• Impermeable damp proof barrier
• A uniquely dimpled 24-mil high-density
polyethylene (HDPE) sheet
• The dimples form an AIR GAP under the
impermeable surface of Platon
41
- 42. Full Package From Armtec - Platon
Foundation Protection
•If any water does manage to get
by the Platon sheet it flows through
the air gap to the footing drain.
Flooring Protection:
•Lifts finished floor off cold damp
concrete
•Protects finished floor from slab
moisture
42
- 43. Full Package From Armtec – Sound
Walls
• Absorptive
• Reflective
• Transparent
43
- 50. Full Package From Armtec - Hollowcore
Prestressed Hollowcore Slabs:
• Sound barrier between floors
• Provide excellent fire resistance
• Lightweight
50
Editor's Notes
- LOCK+LOAD is a UNIQUE non stacking modular cantilever used as an ideal facing for MSE retaining walls. LOCK+LOAD is the lightest concrete facing available… 42lbs/ft2 or 200kg / m2. Around one half the unit density of Alan Block… it can do this because it does not stack… 42 MPA or 5500 psi fiber and steel reinforced concrete units that only touch the soil… there is no bearing of concrete to concrete. LOCK+LOAD puts over 1050 sf or 97sm on a 45,000lb truck. It is one tenth the weight of big blocks.