U-Bahn Beton® - Disposable formwork for one-way voided slabs in reinforced concrete cast on site

8/12/2019 U-Bahn Beton - Disposable formwork for one-way voided slabs in reinforced concrete cast on site

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www.daliform.com

Disposable formwork forlightened single directionstructures in reinforcedconcrete cast on site


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Formwork

Utility passage

Foundations

Certifi cations

KEY:

SWITCHBOARD

Telephone Fax

+39 0422 2083 +39 0422 800234

FOREIGN COMMERCIAL SECRETARY OFFICE

Telephone Fax e-mail+39 0422 208311 +39 0422 800234 [email protected]

TECHNICAL SECRETARY OFFICE

Telephone Fax e-mail

+39 0422 208350 +39 0422 800234 [email protected]


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U-Bahn Beton is a modular f ramework in recycled

polypropylene that was specifical ly designed to create one

way slabs that are cast on site or semi-prefabricated.

The various m odules, which over lap o n the ed ges, m ake i t

poss ib le to create beam s o f any length .

Thanks to i ts conic elevator feet , immersing the U-Bahn

Beton formworks in the concrete cast ing wi l l obtain thick,

para lle l beams that are c losed f rom the b ot tom and top b y a

flat plate mad e in sequ enc e w ith a single c ast ing; this results

in reduc ed use o f conc rete and s tee l as w ell as cons iderab le

advantage s in terms o f fire risk in co m parison to formw orks in

expanded po lys tyrene.

Light and stackable, i t is easy to handle during posi t ioning,

funct iona l in i ts use, c an be exposed to bad weather and i s

easy to store in the yard wi th minimum dimensions.

Designed according to st r ict qual i ty cri teria, the U-Bahn

Beton f ramework is guaranteed to resist without

concrete 150 kg concent ra ted on a load impr in t o f 8 x 8

cm, as foreseen by current regulat ions.

Unl ike wi th the use of classical hol low b rick bloc ks, the

empty spac e left byU-Ba hn Beton ca n be used for the

pass ag e of cab les and systems.


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Advantages

Applications

Reduc t ion in time and cos t re la ted to pos i tion ing the formw orks. High precision and regularity of the width of the co nc rete slab r ibb ing.

Flexible, pract ical and simp le creat ion of lengths b elow the standard size.

Greater yard cleanl iness and improved disposal of the waste in compar ison to tradit ional formworks (hol low blocks and EPS).

Bet ter work per formance guarantee in com par ison to expan de d p olystyrene that , due to its crum bl ing into granules, tends to at tach i tsel f

stat ical ly to everything, and is d ifficu l t to remo ve, co m prom ising the c orrect filling of the con crete for the beam s and in the no des .

Poss ibi lity to t rim the soffit wi th imm ediate econo mic advan tages, avoiding exp ensive plastering.

Poss ibility to perform a single co ncrete c asting for the creation of lightened slabs w ith the slab also in the soffit. In co mp arison to tradit ional

formworks (hollow blocks and EPS), the layer making up the soffit must first be cast, then the formworks and the reinforcements are posit ioned,

and then c oncrete is again cast .

Quicker execut ion of prefabricated s labs w ithout the need to prepare spec ific safety vents in the case o f a fire.

Providing the slab wi th greater fire resistance.

C ons iderab le reduc tion in the yard of overal l vo lumes as w ell as the o verhead hand ling o f tradit ional formw orks (hol low blocks andEPS) thanks to its characterist ics of stackabil i ty, modularity, l ightness and manoeuvrabil i ty.

Bet ter seism ic b ehaviour; the presenc e of a dua l reinforced c onc rete layer, which ma kes i t po ssible to mo re solidly conn ect the vertical

st ructures o f a bu ilding in c om parison to a t radi tional slab.

Advantage of us ing the cav it ies created us ing U-Ba hn Beton , which run along the ent i re slab, as an equipm ent room for various typ es

of systems.

Application example:

Underground p arking b uilding w ith the top-d own technique.

U-Bahn Beton is the ideal solut ion for creat ing lightened one way slabs for al l

types of st ructures:

residential, commercial, executive, industrial buildings as well as public

structures (schoo ls, hos pitals, etc ).

U-Bahn Beton is fundamental ly used in al l appl icat ions that require one way

beams and s labs as wel l as a reduced use o f concrete and reduced weight .

Wi th U-Bahn Beton s labs wi th a greater thickness can be created wi th less

concrete .

A part icu lar type of use o fU-Ba hn Beton is for co nstruct ions carried o ut using

the top-downtechnique (by co m partmen ts or layers) wh ere instead o f working

f rom the bot tom upward, work i s per formed f rom the top downward; fi rs t the

slab is created and then the excavat ion is made.

Underground parking buildings in historical ci ty centres are of ten created

using this technique due to the obvious constraints related to the presence ofnum erous b ui ldings as we ll as the ne ed to q uickly restore t raffic flows.

For projects that use this technique, i t is of st rategic importance to supply the

yard w i th l ight-w eight and n on- bulky ma terial .


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320

400

200

0/40

1200

400 U-BAHN U-BAHN U-BAHN U-BAHN U-BAHN U-BAHN

20 20 20 20 20 20

1200

Daliform Group has again demonstrated to be extremely precise with regard to respecting health and

the environment having been the fi rst to obtain Environmental Compatibility Certification (CCA)forits products.

This certifi cate is very important for U-Bahn Betonbecause it demonstrates: the lack of dangeroussubstances in its composition (even if recycled materials are used); the lack of emissivity of toxic

substances during the various phases of the product's life and operating cycle, which benefits the

healthof the intermediate users (production and installation personnel) as well as fi nal users (people living

in the building) as well as the environmentin general.

Environmental compatibility

Technical data

U-Bahn Beton formwork module

Useful size

Height

Thickness

Pieces per box

cm

cm

cm

pcs.

40

20

0,3

25

p

H

Closing panel

Front view

Loading and breaking test certifi ed by the University of Padua.

Environmental Compatibility Certifi cation (CCA).

Member of the Green Building Council Italia.

System certifi cation pursuant to ISO 9001 - ISO 14001 - SA Standard 8000.

Certifications

Side view

View from above

Useful size

Height H

Feet heightp

Weight per piece

Piece volume

Pallet dimensions

Pieces per pallet

Pallet weight

cm

cm

cm

Kg.

m3

cm

pz./PAL

Kg./PAL

120 x 40

20

0 - 4

2,600

0,0864

120 x 120 x 250 h

300

730


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Positioning

The ent i re surface of the s lab to be cast on s i te is shut tered wi th

w ood dec k (or s im ilar systems ), then the w elded reinforcem ent i rons

and m esh are pos i tioned acco rd ing to the des ign and the spac ing

latt ice for the up per reinforceme nt is arrange d.

The pos i t ioning is completed by c los ing the open final ends of the

U-Bahn Beton formwork wi th a lateral c los ing plug above which

the reinforcements, welded mesh as wel l as the inst ruments forcut t ing and punc h ing are p os i tioned acco rd ing to the des ign.

Once sui tably set , the cast ing can be restarted f rom the s tart ing

po int, com pletely bury ing the U-Ba hn Beton . The cas t ing is then

levelled and sm oothe d in a t radi tional manner.

The U-Bahn Beton formworks are pos i t ioned wi th the des ired

centre dis tance that wi l l determine the width of the beams. Thanks

to the conic elevator foot , the U-Bahn Beton formworks wi l l be

l i f ted f rom the surface, making i t poss ible for the lower s lab to be

formed.

The systems wi l l be arranged in the internal cav i t ies of the

formworks .

The conc re te cas t ing m us t be p er formed in two phases to p revent

the floatation of the formworks: an init ial layer wil l be cast to form

a thickness equal to the height of the elevator foot . Cast ing wi l lcont inue for this firs t port ion of the s lab unt i l the concrete s tarts to

set and bec om e less flu id .

Once the s t ruc ture has hardened, the formwork can be removed.

The surface is smooth in correspondence of the soffi t .

i i i i

REINFORCEMENTS

SIDE

SHUTTERING

PROP

SPACER

PILLAR

FORMWORK

PVC UTILITIES

i i

SIDE

SHUTTERING

PROP

SPACER

PILLAR

FORMWORK

PILLAR

BACKPROPPING

i l i i i

REINFORCEMENTS

SIDE

SHUTTERING

PROP

SPACER

TRADITIONAL SHUTTERING

IN WOOD OR METALLOWER REINFORCEMENT

PILLAR

i i i i l l i l

REINFORCEMENTS

SIDE

SHUTTERING

PROP

CLOSING PANELSPACER

PILLAR

FORMWORK

UPPER REINFORCEMENT

i l i i

SIDE

SHUTTERING

PILLARPROP

1

3

5

2

4

6

Photographic details of the complete positioning, reinforcing and casting sequence.


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U-Bahn Betonor polystyrene formwork?U-Bahn Betono alleggerimento in polistirene?

Even if polystyrene is w idely used in the c ons truc t ion indus try due to i ts low c ost and wo rkabi li ty, i t has m any disadvantag es that are being

addressed by the technical-scient ific communi ty.

With reference to l ightened slabs, the I tal ian Ministerial Decree of 16.02.2007 to enclosure D.5.1 establ ishes that : In the c ase ofpolystyrene formworks, or formwo rks in similar materials, there must be approp riate vents for the overpressures. Even prior to

this, the UNI 9502 standard - art ic le 7.2.2 - establ ished that : In the case of elements incorpo rating materials that when sub ject to

high temperatures turn to gas, there must be app ropriate vents facing the side exposed to fire to ensure that the bearing capacity

is not compromised by explosions.

Therefore, using p olystyrene s labs cas t on si te requ ires the extra expen se o f fit t ing ven ts in the c avity to cou nteract the exce ssive pressu re

of gas that is subl imated by the formwork. However, in the event of a fire there would st i l l be the problem of toxic gas escaping into the

environm ent (styrene).

As U -Bahn Be t on is mad e of p olypropylene, i t is not toxic e ven i f bu rnt . Moreover, the slab w i ll not explode d ue to the e sc aping o f over

pressurised gas f rom the feet (4 every 20 cm of the formwork) that act as safety valves.

Other advan tages o f U-B ahn Be tonco mp ared to EPS are the d im ensions, hand ling ( just th ink of transferring it overhead on the s labs be ing

buil t) and outd oor storage. P olystyrene is , in fact, bulky and c annot b e stac ked; i t is part icu lar ly fragi le on i ts ed ges and c orners that crum ble

leaving tho se ann oying bal ls that, s tat ica l ly ch arged, s t ick to everyth ing (espec ia lly to the re inforcem ents) and are very hard to get r id of.

Daliform Group technical offi ce

The technical consultancy is only valid for the Daliform Group construction systems.

To c onta ct the te chnica l offic e: Tel. + 39 0422 208350 - tecnico@da liform.co mTo ob tain updated tec hnica l ca rds, s upport material, new photos and ca se s tudies, g o to w ww.d aliform.com

SUPPORT FOR THE EXECUTIVE DESIGNSupport by design professionals. Upon request, the formwork positioning plancan be supplied with a list of the products required to carry out the work and therelative accessories.

FEASIBILITY STUDYP redimensioning a nd o ptimisa tion o f the s tructures , c ompa rative a nd/or revisedproposa ls, ma terial and manpow er estimates , cos t a nalysis.Evaluation of forced ventila tion in the ca se of co ld rooms .

ON-SITE SUPPORTIf necessary, our technical staff can be present on-site to help the constructioncompany during the operational phase.

CALCULATION REPORT

Reports c ertifying the exec ution o f Da liform G roup c onstructive s ystems .

The information contained in this catalogue cou ld be changed. Before placing an order, request a confirmation or updated information from the DALIFORM

GROUP, which reserves the right to make changes at any moment without notice. In consideration of recycled material, it is specified that there are

tolerance margins caused by environmental factors.


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Specifi cations

Creation of a one way slab in reinforced concrete to be cast on site on suitable horizontal formwork (or on a prefabricated plate). The total

thicknes s o f the slab is ______ cm , to be part ially l ightened (acc ording to the de sign) wi th recyc led plast ic mo dules, suc h as U-Ba hn Beton

f rom the Daliform G roup, wi th an extended form o f 120 c m w ith an isosc eles trapezoid sec t ion w ith a max base o f 40 c m he ight 20 cm , wi th a

length that can be divided in su b-m ult iples of 2 0 cm and joinable in l ine tog ether to overlap the final edg e; sup pl ied wi th 24 t runcated -pyramidalfeet that are 4 cm in height, resting on the horizontal support for the formation of the thickness of the soffit suitably reinforced with welded

mesh, 10 x 10 cm , w ith a 5 mm stee l rod.

This inc ludes the su pp ly and p osit ioning of the U-Ba hn Beton mo dules to b e placed in p arallel, sui tably distanced rows to form co nt inuous

jo ists b et w ee n b eam s that are c losed on the ir resp ec tive fina l tunne ls w ith c los ing p an els ; a w eld ed m esh 2 0 x 2 0 c m - 5 m m is p lac ed

above the formw orks. The upp er and lower reinforcemen ts wi ll be co nnected , in the joists, wi th vert ical C-shap ed s teel hooks min 8 m m

placed at a c entre distance o f 30 c m along the joist axis.

Also included is the supply and casting of the concrete needed to create the slab (in the ful l and l ightened zone), fil l ing and vibrating first the

part under the formworks unti l completely covering the feet of the U-Ba hn Beton (no further) (minimum resistance class C25/30, fluidity

class S5 and diameter of aggregates suitable, in order to avoid phenomenon l ike segregation), the casting wil l then continue unti l the slab

is completed as soon as the first layer starts to set (in this second phase, a fluidity class different than the previous one is permitted) unti l the

slab is c om pleted wi th the format ion of a min 4 cm layer. The horizontal supp ort formw ork, welded me sh, reinforcemen t bars, beam cage s

and vert ical C-shap ed c onnec tors wi ll be en tered so me where else.TheU-Ba hn Beton modules must be safe to walk on and cert ified wi th a resistance characterist ic of 150 kg in the weakest point on a

square sup port of 8 x 8 cm ; must not release p ol lut ing sub stances, have an Environmental Compatibility Certificationand be p roduced

by a com pany that is equipped w ith an Integrated M anagem ent System (ISO 9001, ISO 14001, OHSAS 18001, S A 8000); the company

supplying the U-Ba hn Beton modules must report construct ively to the designer and the yard manager upon supply and prior to the

creat ion o f the slab, ad apt ing their product to the execu t ive d esign, integrating i t when nece ssary, the c om pany m ust also exhibi t the p roduc t

cert ificate approved by an EOTA mem be r ag enc y (European Organisation for Technical Approvals) .

The co st for the c reation o f holes wi th the dimensions and sec t ions foreseen by the architectural drawings is also included, the price also

includes and covers al l costs for providing the finished wo rk in a wo rkmanl ike m anner; it does not include the su pp ly and po si tioning of the

horizontal formwork that supports the slab and accessories, the latt ice and the metal reinforcement, which wil l be entered separately.

cost Euro/m 2. ____________________

Logistics - pallet capacity

6,20 x 2,45

13,60 x 2,45

8,20 x 2,45

8,40 x 2,45 7,20 x 2,45

Trac tor (8.20x2. 45)

Tra iler (6.20x2.45)

Tract or+ Trailer typ e B IG (8.40+ 7.20x2.45)

Semi-trailer (13.60x2.45)

20 feet container

40 feet container

12

10

12 + 12

22

11*

18*

MEANS OF TRANS P ORT NO. OF PALLETS

* the m 2per pal let can vary based on the type of c ontainer.

20 feet

40 feet

1 Supply and ca sting of co ncrete fluidity clas s S5 - thickness ____ m3/m2

Tota l cos t /m2

No. Item U.M. Qua ntity Unit price Tota l

Supply and installation cost grid

2 S upply of the U-B AHN B ETON formwo rk m3/m2 1

4 Dry po sitioning of the U-B AHN B ETON formwork H/m2

5 Supply and po se o f bend ing reinforcement and shea r/punching Kg /m2

6 Supply and casting of concrete fluidity class S ____ m3/m2


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DG

_UBA-

Rev.03_

07-12

www.daliform.com

Tel. +39 0422 2083 - Fax +39 0422 800234

[email protected] - www.daliform.com

Via Serenissima, 30 - 31040

Gorgo al Monticano (TV) - Italy

Socio del GBC Italia.

U-Bahn Beton® - Disposable formwork for one-way voided slabs in reinforced concrete cast on site

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