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Bubble DeckR
The engineering solution that radically improves building
designand performance while reducing the overall costs
The Lightweight Biaxial Slab
Design Freedomflexible design adapts to irregular and curvedplan
layouts, longer spans and fewer supports.Downstand beams and
bearing walls eliminated.
Environmentally Green and Sustainablereduced energy & carbon
emissions. Recycled plastic balls.All components are re-usable.
Savings in CO2up to 40 kg/m2 (reduced amount of concrete in
slabs)
Reducing Overall Costs reduced material consumption and faster
construction.The increased flexibility will secure lifelong
savingsconcerning envelope, internal work,interior design as well
as continueous usage.
Process Optimizedtailormade semi-fabricated elements; fast
erectionwith large elements up to +40 m2; easy concretingand fast
placing of services due to the beamless flat soffit
Quality products for quality constructionsImprove the building
and enjoy the benefits, both as a owner and a user
Earthquakethe light, biaxial slab/column system is regarded the
probablybest construction method for Earthquake resistance
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Moment Strength and Span
0
50
100
150
200
250
300
350
400
170 230 280 340 390 450Deck height [mm]
Mom
ent s
tren
gth
[kN
m/m
]
5
7
9
11
13
15
17
19
Span
[m]
Span Moment Strength
8-12 / 75 10-16 / 100 12-18 / 125 14-20 / 150 16-22 / 175 18-25
/ 200 Steel: [mm]
(fck = 20-30 MN/m2, fy = 500-550 MN/m2)
Carrying Capacity
Simple Site Installation
1. Temporary supports - propping on parallel beams at 1.8 to 2.5
m spacing2. Placing elements - tailormade semi precast elements
lifted into position3. Joint reinforcement - loose bottom splice
bars and tie top mesh across joints4. Shear reinforcement - across
columns if needed5. Edge reinforcement - edge bars and hairpins
around slab perimeter6. Perimeter shuttering7. Preperation - seal
joints, clean and moisten precast concrete layer8. Concreting -
pour, vibrate and float9. Temporary works - remove, typically after
1-2 weeks, according to specific site advice
A solid slab can only carry app. one third of its own weight,
and haveproblems with long spans due to its high weight. BubbleDeck
solves thisproblem by eliminating 35 % of the concrete, while
obtaining the strength.Hence, a BubbeDeck slab has the same applied
load capacity with only50 % of the concrete required for a solid
slab, or with the same slabthickness has twice the load capacity
using 65 % of the concrete.
In % of asolid deck
BubbleDeck vs. solid deck
Samestrength
Samebendingstiffness
Sameconcretevolume
Strength
BendingstiffnessVolume ofconcrete
100
90
66
105
100
69
150 *)
300
100
*) On the condition of the same amount of steel.The concrete it
self has 220 % greater effect.
Shear capacity is more than 65 % of a solid deck with same
height.In calculations are used a factor 0.6 In critical areas
(around columns), balls can be omittedto achieve full capacity.
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BubbleDeck is ideal forincorporating other technologies
Post tensioning
A PT solution can easily beincorporated in the slab tocomply
with megaspans.
Heating/cooling
An energy saving way to heatand/or cool a building, is to
usethermoactive slabs. Piping areplaced either at the precasteror
onsite.
Green credentials
Compared to a solid slab with same thickness,Bubbledeck saves 35
% of concrete in the slab, andsaves 50 % with the same bearing
effect. This will lead tofurther reductions through the entire
structure.
The production of one ton of cement causes emissionof about 800
kg of CO2. One m3 of concrete causesCO2 emissions close to 300 kg.
This figure doesnot even include emissions due to quarrying,
transport, etc.
Other GHG and natural ressources (water, sand, stone)are reduced
proportionally.
BubbleDeck uses recycled plastic balls, and all materialscan be
reused upon demolition.
Thoughout the structures life-time, the envelope and allinternal
work can be removed, and the original framesimply refitted for a
new purpose.The biaxial nature of BubbleDeck allows for any
internallayout to be reconfigured.
Earthquake resistance
Seismic forces impacting a building are proportionally tothe
horizontally accelerated mass, which has to beabsorbed by the
vertical structure.BubbleDeck with its reduced dead load, will
consequentlyreduce these forces.BubbleDeck, the biaxial flat slab
system with columns andshear walls, is an effective concept
forearthquake resistant concrete constructions.
Explosions safe
BubbleDeck, the biaxial flat slabsystem and columns is ideal
forstructures with high resistanceagainst explosions.Get rid of
heavy facades and rigidwalls, surpressing an airpressurewhich in
worst case leads tocollapse of the structure.
BubbleDeck can be supplied in3 types of manufactured
elements:
Type A - Reinforcement modules, comprising prefabricated
bubble-lattice sandwich elements to be placed ontraditional
formwork
Suitable for suspended ground floor slabs and alteration /
refurbishing projects.
Type B - Filigree elements, where the bottom of
thebubble-lattice sandwich includes a 60 mm thick pre-castconcrete
layer acting as permanent formwork.
Suitable for the majority of new-build projects.
Type C - Finished panels, complete precast slab elements. These
requires supporting beams or walls.
Often used as balconies.
BubbleDeck is fully tested,and can be calculated in thesame way
as a solid slab, withrespect to international (Eurocodes)and
national codes.
Confirms with ISO-standards.
Optimise the life-cycle costs
Commercial tenants change onaverage every 5 years.The ratio
between initial investment sum and costs for operation and
modificationequates to about 1 : 5
BubbleDeckss flexible slab/columnsystem maximises the
ownersinvestment.
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The BubbleDeck floor system is a hollow deck with span in
twodirections, in which plastic balls serves the purpose of
eliminatingconcrete that has no carrying effect.
Compared to a solid deck of same height, the weight of
thefinished floor is 35 % lower, but still with the exact same
strength.An indication of span is 40 times the deck-thickness in
bothdirections; cantilevers app. 10 times the deck thickness.
BubbleDeck is a reinforced concrete deck, consisting of
factory-made bubble lattice - balls integrated with
reinforcement-meshes.
Deck types:BubbleDeck can be delivered in 3 versions:
Reinforcement modules in form of pre-fabricated
'bubble-lattice'.To be concreted on traditional formwork on
site.
Filigree-slabs, where the bottom side of the 'bubble-lattice'
unit is furnished with a pre-cast concrete layer which replaces
thehorizontal part of the formwork on the building site.
Finished slabs, delivered to the building site as pre-cast
factory-made slab units.
Materials: Steel: FeB 550 / 460 Concrete: Standard Portland
cement. No plastifiers needed. Balls: HDPE (high density
polyethylene / propylene), recycled
Additional:Extra steel is incorporated in slabs.Hairpins and
shear reinforcement according to the constructor.Joint
reinforcement is delivered with slabs.
Form: See illustrationsData:
Type Thickness Balls Span Mass Concrete on-site
mm mm m kg/m2 m3/m2
BD 230 230 180 7 - 10 370 0.10 BD 280 280 225 8 - 12 460 0.14 BD
340 340 270 9 - 14 550 0.18 BD 390 390 315 10 - 16 640 0.20 BD 450
450 360 11 - 18 730 0.25
The exact height is optimised according to project
requirements.Max. size of units: Width: 3 m Length: 9 -14 m
(depending on producer)
Functional applicability: Residential living, offices, utility
and industrial buildings. Used in offices, apartments, villas,
hotels, schools, parking, hospitals, laboratories and
factories.Economical applicability: 35 % less weight than a solid
deck of same thickness, results in longer spans, less reinforcement
and fewer columns. A total weight reduction of 50 % in the building
is possible. No beams are necessary, giving minimal construction
height, free pipe layout and max freedom for interior arrangements.
Reduction of building time - fewer building elements and easier
finishing.Environmental applicability: Substantial reduction in
materials and transportation. Less emission and energy consumption.
Every component can be recycled. Easy demolition.Regulations: Used
in accordance with Eurocodes.
Calculations are performed as for solid slabs following
Eurocodes
*) On the condition of the same amount of steel.The concrete it
self has 220 % greater effect.
Shear capacity is more than 70 % of a solid deck with
sameheight. In calculations are used a factor 0.6. In critical
areas(around columns), balls can be omitted to achieve full
capacity.
Description
Composition
Characteristics
Applicability
Calculation
Fire
Classification: Finished deck not flammable.Fire resistance:
Depending on concrete cover. 60-180 minutes.Smoke: Resistance is
1.5 times the fire resistance. Depth of smoke < 10 m1 on both
sides.Balls: Balls simply carbonize. No toxic gasses.Examinations
carried out in accordance with ISO 834.
Sound insulation Standard impact dimension sound level
Type Rw (C;Ctr) [dB] Lc,w (C1;C50-3150) [dB] BD 230 55 (-2 ; -7)
78 (-11 ; -12) BD 340 57 (-2 ; -7) 76 (-13 ; -13)
In accordance with ISO 140 and 171.
Delivery: on site from factory.Carrying out: Temporary supports:
The filigree elements are supported by temporary supports according
to the producers plan. Distance max. 1.8 - 2.5 m. Placing elements:
By crane, lifting in the girders. Abutment on walls, 60 - 80 mm, on
columns 40 - 50 mm, depending on detail. Placing joint
reinforcement: Rebars, meshes, hairpins and extra shear
reinforcements if necessary. Placing edge shuttering Concreting:
Normally with B25 or B35. Removal of temporary supports: According
to the constructor.Finishing: Depending on demands.
Price: Depending on project.Terms of delivery: Standard terms of
delivery.Delivery: On site from factory.Delivery time: In
accordance with producers, app. 8 weeks.Area of delivery:
Worldwide.Guarantees: Following the producers' guarantees.Technical
service: Product documentation, technical advice, plans and
calculations.
BubbleDeck International Phone: +45 44 95 59 59Rsevangen 8 Fax:
+45 44 95 59 59 DK 3520 Farum
E-mail: [email protected]: www.BubbleDeck.com
Sound
Implementation
Commercial factors
Contact
In % of asolid deck
BubbleDeck vs. solid deck
Samestrength
Samebendingstiffness
Sameconcretevolume
Strength
BendingstiffnessVolume ofconcrete
100
90
66
105
100
69
150 *)
300
100
