For Discussion use only, do not scale. · Formwork is lightweight • Reduced crane time • Crane...
Transcript of For Discussion use only, do not scale. · Formwork is lightweight • Reduced crane time • Crane...
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Stairmaster - Illustrative Installation Sequence.For Discussion use only, do not scale.
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Illustrative Installation Sequence – Stairmaster
1. Stairs and rails can be prepared ahead of working decks to maintain access and eliminates
temporary stair systems and ladders on site.
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2. Option One: Lower stair vertically from two lifting points, idea for use with slipform.
Illustrative Installation Sequence – Stairmaster
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3. Option Two: Lower stair vertically at its true angel using the four lifting points.
Illustrative Installation Sequence – Stairmaster
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4. Seat the bottom of the stairs first, allowing the support angle at the top of the flight to rest on the formwork.
Illustrative Installation Sequence – Stairmaster
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• Rebar installed to landings and fixed
to stair rebar
Illustrative Installation Sequence – Stairmaster
5. Install props and rebar.
• Install 2 number props perpendicular
using timber ledgers
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6. Concrete pour from bottom and up with dry mix to first flight.
Illustrative Installation Sequence – Stairmaster
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7. Concrete poured to half landing.
Illustrative Installation Sequence – Stairmaster
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Illustrative Installation Sequence – Stairmaster
8. Concrete pour from bottom and up with dry mix to second flight.
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9. Concrete pour complete, trowel steps for smooth finish and wipe clean (Back prop if flight has not
reached Full 28 day strength ).
Illustrative Installation Sequence – Stairmaster
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Features and Benefits of using Stairmaster System
Feature: Benefit: Who profits?
Designed to be installed progressively with
floors
• Eliminate temp stairs/ladders on site
• Cost saving
• Can be used for access, passage of materials
and fire escape during build.
• Concrete contractor
• Main contractor/client
Permanent rails are provided with stair flights • Eliminates temp. rails/scaffolding
• Cost saving
• Less trades in stair core
• Safest method of construction-Men installing
stairs always have edge protection in place
• Concrete Contractor
• Main contractor/client
All elements ,Stair flights, landings and core all
have a greater continuity of reinforcement
and concrete
• Strongest method of constructing stair cores
• No reliance on shelf angles
• No risk of progressive collapse
• Popular with engineers
Permanent formwork manufactured off-site • Allows fastest installation times on site
• No striking of formwork
• No reliance on specialist “stair hands”
• Stairs can be used next day
• Cost saving
• Programme benefits
• Concrete Contractor
• Main contractor/client
Formwork is lightweight • Reduced crane time
• Crane not essential to install
• Concrete Contractor
• Main contractor/client
Formwork has a hard-wearing steel nosing on
risers
• Won’t chip
• No need for making good
• No requirement for stair protectors
• Ideally suited for passage of men/materials
during the build
• Takes a good finish.
• Concrete Contractor
• Main contractor/client
Stair flights have choice of straight stringer
profile
• No need for MDF trim on stringers at stair
wells
• No need for aluminium edgings
• Provides a tidy edge for finishes
• Lowers cost significantly
• Reduces number of trades and time spent in
stair cores
• Main contractor
• Client
Soffits and stringers have flat, fair-facing finish • No need to cover over with plasterboard
• Accepts a good paint finish
• Gives superior look
• Cost savings
• Main contractor
• Client