The document discusses U-boot formwork, which is a modular recycled plastic element used in reinforced concrete construction. U-boot reduces the amount of concrete needed and allows for larger spans without beams. It is available in various sizes and can be used to construct slabs, foundations, parking structures, and other building elements. The assembly process involves positioning reinforcing bars and U-boot shells, then casting concrete in phases. Key advantages are increased floor space, lighter structures, reduced material costs, and greater design flexibility. Several real-world examples employing U-boot formwork are provided.

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2. o INTRODUCTION
o DIMENSION
o APPLICATION
o ACCESSORIES
o INSTALLATIONS
o ADVANTAGES
o SUMMARY
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3. o The U-Boot formwork is a modular element made of re-cycled
plastic for use in building lighter structures in reinforced concrete
cast at the work-site The biggest advantage of U-boot is reduce the
concrete quantity.
o U-boot is used to create slabs with large span or that are able to
support large loads without beams.
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4. o U boot normally is in size of 52*52 cm2 and 10,13,16,20,24
and 28cm in height
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5. o The main disadvantage of concrete constructions, in case of
horizontal slabs, is the high weight which limits the span.
o For this reason, basic research in the field of reinforced
concrete structures have focused on enhancing the span,
either by reducing the weight or overcoming concrete's
natural weakness in tension.
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6. o Cement
o Steel
o Fine aggregate
o Course aggregate
o Water
o Recycled plastic mould (u-boot shells)
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7. o Used in
Hospitals
o Used in
Parkings
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8. o Used in raft
foundations
o Used in two way slabs
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9. o Used to create slabs
with large spans or
that are able to
support large loads
without beam
o Permit to built the
specific Mushroom
pillars
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10. o CONNETION BRIDGE
Use to connect two u-boot in
same row
o SPACER JOINT
The correct position of the u-
boot beton is guarnteed by
a effective spacer joint
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11. o CLOSING PLATE
Used to cover the cap of u-boot beton
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12. o BETON SANDWICH
 In this u boot beton is shaped as pyramid drunk.
 It is also known as double u-boot beton
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13. o Step 1
The entire surface of the slab to
be cast on site is shuttered with
wood deckings (or similar
systems), then the lower
reinforconcrete bars are
positioned in two mutually
perpendicular directions
according to the design and the
lattice for the upper
reinforconcrete is arranged.
o Step 2
The U-Boot Beton formworks are
positioned using the lateral
spacers joints to place them at the
desired centre distance that will
determine the beam width. Thanks
to the conic elevator foot, theU-
Boot Beton formworks will be lifted
from the surface, making it
possible for the lower slab to be
formed. If double or triple
elements are used, these elements
must first be assembled, which will
be supplied on distinct pallets in
the yard.
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14. o Step 3
The positioning of the reinforcemnts
of concretes is completed by
placing above the U-Boot Beton
formwork the upper bars in the
two directions as well as the
reinforcement for shear and
punching where necessary,
according to the design.
o Step 4
The concrete casting must be
performed in two phases to
prevent the floatation of the
formworks: an initial layer will be
cast to fill a thickness equal to the
height of the elevator foot. Casting
will continue for this first portion
of the slab until the concrete starts
to set and become semi fluid.
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15. o Step 5
Once suitably set, the casting can be
restarted from the starting point,
completely burying the U-Boot
Beton. The casting is then levelled
and smoothed in a traditional
manner.
o Step 6
Once the structure has hardened, the
formwork can be removed. The
surface is smooth in
correspondence of the soffit.
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16. 1.INCREASED NUMBER OF FLOORS
Possibility to gain floors at the same
building height (towers) and
building volume.
2.LARGE SPAN AND GREAT
ARCHITECTURAL FREEDOM
Large space
3.REDUCED SLAB THICKNESS
Thinner slabs but with equal loads
and clearances, or bigger
clearances with an equal thickness
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17. 4. NO BEAMS BETWEEN PILLARS
Flat soffit for greater flexibility when
installing systems.
5. REDUCTION IN THE NUMBER OF
PILLARS – OPTIMISATION OF THE
SECTION OF PILLARS
6. REDUCTION IN THE OVERALL LOAD
OF THE STRUCTURE WEIGHING ON
THE PILLARS AND THE
FOUNDATION.
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18. 7. REDUCED FOUNDATIONS -LESS DEEP FOUNDATION EXCAVATION Lower costs
for foundation excavations. Less excavation.
8. IMPROVED ACOUSTIC BEHAVIOUR Less acoustic transmittance
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19. 9.FIRE RESISTANT
10.SOUND INSULATION
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20. 1. Bergamo ITC – lab and research center
25000m2 In Italy
2. Nass shopping centre 50000m2 in Ireland
3. Scaly nanotechnology research and
development center 22000m2
4. Multi storey cinema in Russia
5. Shaktidham temple 6340 sqft Aurangabad,
Maharashtra
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21. 1. U boot technology can be used to increase the span by
reducing the concert content.
2. Economic decrease cost around 25%
3. Eco friendly
4. Advantegous
5. Concrete usage is reduced- 1kg of recycled plastic replaces
100kg of concrete. Reducing material consumption made it
possible to make the construction time faster and reduce
overall cost.
6. Beside that it has lead to reduces dead weight upto 50% ,
which allow creating foundation sizes smaller.
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