precast concrete steps construction tutorial by armtec ltd

Residential Steps and DecksAugust 10 2011

Melissa Pressnail B.Eng

James Regier

Ebi Moradi P.Eng

Tony Hof

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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

About Armtec1/

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Since:

1908

About Armtec

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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

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Introduction

• BEBO Concrete Arches

• Bin-Wall

• Bin-Wall Bridge Abutments

• Bridge Girders and Beams

• Bridge-Plate

• Communications

• Concrete Sound Fencing

• Corrugated Steel Pipe

• Double Tees

• Durisol Precast Noise Barriers

• Electrical

• Geosynthetics

• HDPE Pipe

• HDPE Tubing

• Mechanically Stabilized Earth Retaining Walls

• Multi-Plate

• PARAGLAS SOUNDSTOP

• Platon

• Precast Concrete Steps

• Precast Concrete Structures and Elements

• Precast Tunnel Liner

• Precast Utility Pads

• Prestressed Hollowcore Slabs

• Sports Venues

• Stormwater Treatment/Detention Systems

• Streetlight Bases and Traffic Control

• Sumps and Trenches

• Tunnel Liner Plate

• Ultra Flo Steel Pipe

• Water Control Products

What are Precast Steps ?2/

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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

Finishes3/ Benefits

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Benefits

Why use Precast Steps ?

•Durability

•Ease of installation

•Quality appearanceFully 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

environment

4/ Steps vs Decks

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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

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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

Finishes5/ Finishes

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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

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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

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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

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Finishes

Exposed

• All surfaces (vertical and horizontal) are exposed aggregate

• Aggregate colour options of grey or brown

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Finishes

Plain

• Broom surface on treads and top slab as a result of face up casting.

• All vertical surfaces are steel form finished

Finishes6/ Support Requirements

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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

7/ Site Preparation

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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

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Site Preparation

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Site Preparation

Access to homes and sites

• Siding should be installed after step installation. Siding contractors should not be moving steps for siding installation.

8/ Installation

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Installations

• Rear mount knuckle booms on 8 ½ ton tandem truck

• Steps and decks are installed using the inserts on the top slab

Finishes9/ The Process

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The Process

• Orders are received by the customer service representatives

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The Process

• Drawings are reviewed

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The Process

• CAD drawings for production are produced

• Orders are sent to production

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The Process

Step Form Deck Form

• Shape is laid out

• Rebar is placed

• Lifting inserts placed on rebar

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The Process

Installers process on site:

• Installer check location for proper fitting of step• Ensures wing wall is at proper height

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Installers process on site:

• Truck is backed in as close as possible to maximize crane efficiency

The Process

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Installers process on site:

• Step is lifted off truck and put into place, shims are adjusted as required

The Process

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The Process

Finishes9/ Testimonials

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Testimonials

“…more efficient timeline”

“… consistent quality of the finished product”

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

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Full Package From Armtec

• Platon

• Sound Walls

• Lock + Load Retaining Walls

• Prestressed Hollowcore Slabs

• Window Wells and Basement Stairs

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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

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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

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Full Package From Armtec – Sound Walls

• Absorptive

• Reflective

• Transparent

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Full Package From Armtec – Sound Walls

Solid Rock Fencing – Stone Tree

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Full Package From Armtec – Sound Walls

Durisol - Sound Absorbing Panels

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Full Package From Armtec – Sound Walls

Paraglas Soundstop

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Full Package From Armtec – Sound Walls

Paraglas

Soundstop

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Full Package From Armtec – Lock + Load

Full Package From Armtec – Lock + Load

COUNTERFORT

PANEL

Full Package From Armtec - Hollowcore

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Prestressed Hollowcore Slabs:

• Sound barrier between floors• Provide excellent fire resistance• Lightweight

Full Package From Armtec

Window Wells and Basement Stairs

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Melissa Pressnailmelissa.pressnail@armtec.com

(604) 349-8323