U-BOOT BETON TECHNOLOGY A seminar report report submitted in partial fulfillment fulfillment of the requirements requirements for the degree of
Bachelor of Technology in Civil Engineering
By
AMISH RAJ HARI Univ. Roll no:-1650115003 Univ. Reg.no:-151650110189
Under the supervision of Mr. Riddha Chaudhuri
Designation, Department of Civil Engineering
CALCUTTA INSTITUTE OF ENGINEERING AND MANAGEMENT 24/1A CHANDI GHOSH ROAD KOLKATA - 700040
Dept. Of Civil Engineering,CIEM
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CERTIFICATE OF APPROVAL This foregoing seminar report is hereby approved as a credible study of an engineering subject carried out and presented in a manner satisfactory to warrant its acceptance as a prerequisite to the degree for which it has been submitted. It It is understood understood that by this approval approval the undersigned do not endorse endorse or approve any statement made, opinion expressed or conclusion drawn therein but approve the seminar report only for the purpose for which it has been submitted.
Board of Seminar Report Examiners: 1. _____________________________ ____________________________ _ _
2. _____________________________ ____________________________ _ _
3. _____________________________ ____________________________ _ _
4. _____________________________ ____________________________ _ _
5. _____________________________ ____________________________ _ _
6. _____________________________ ____________________________ _ _
Dept. Of Civil Engineering,CIEM
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CERTIFICATE OF SUPERVISOR I hereby recommend that the Seminar presented based on the seminar seminar report submitted under my supervision by A AM M I SH R A J H A R I (U (Unive niverr sity Ro R oll No N o-16 -1650 5013 1315 1500 003.) 3.) entitled
UU-
“
BOOT BOO T B E TO TON N TE CHNOLO CHNOLOGY GY be accepted in partial fulfilment of the requirements for ”
the degree of Bachelor of Technology in Civil Engineering.
_______________ ______________________ ____________ _____
Signature of the Supervisor
Dept. Of Civil Engineering,CIEM
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Acknowledgement
At the very outset, I would be taking the opportunity to convey my cordial and earnest regards to my supervisors (Mr. Riddha Choudhari , Assistant professor ), Department of Civil Engineering, Calcutta Institute of Engineering and Management, under whose supervision and guidance this work has been carried out. It would have been impossible to carry out this seminar work with confidence without his wholehearted involvement, advice, support and constant encouragement throughout. I would also like to thank all the supporting staff of the Dept. of Civil Engineering and all other departments who have been helpful directly or indirectly in making this endeavour a success. I would also like to acknowledge advises and helping attitudes of my friends who have helped my way out to the timely completion of this project.
.......................................................... ( AMISH RAJ HARI )
Univ. Roll No :-16501315003
Dept. Of Civil Engineering,CIEM
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Contents
PAGE NO. CERTIFICATE OF APPROVAL CERTIFICATE OF SUPERVISOR ACKNOWLEDGMENT
ABSTRACT 1. INTRODUCTION 1.1.PARTS OF U-BETON 2. INSTALLATION 3. APPLICATION 3.1. IN RAFT FOUNDATION 4. ADVANTAGE 5. REFERENCE
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1 Introduction The technology of U-Boot Beton is inspired from Human Bone structure to create the voided slab using cement concrete and steel.
U-Boot Beton is a recycled polypropylene polyprop ylene formwork that was designed to create two way voided slabs and rafts foundation. U-Boot Beton is used to create slabs with large span or that are able to support large loads load s without beams.
Fig-1.0-U-Beton
Fig-1.1-U-Beton
A lightweight, cellular concrete made by infusing an unhardened concrete mixture with prepared foam or by generating gases within the mixture. advantages compared with tradition play on cement systems those and light weight training or fully faceted to win slabs the traditional clay cement cement or polystyrene polystyrene floor slab.
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The traditional clay cement or polystyrene floor slabs normally consists of mono directional beings that discharge stresses on to the main beings from these two pillars and finally the foundations the full plate floor slabs instead are made from monolithic reinforced concrete casts in which the structure is able to bi-directionally transmit loads directly to the by using U-boot and lighter slab structure is obtained capable of splitting the stresses in any direction transferring them directly to the penance penance to simplify the concept we we could imagine a series of double teams of alongside the other and arranged as a premise all stresses will be concentrated close to pillars where the suitable full section gets left in this way floor slabs with mushroom like files for the repose in modern people specificity being that the mushroom is embedded in the floor.
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Fig: 2-Mushroom pillar so ,cutting or encumbering capitals and economic boxster’s and avoided thanks to the lightness of the structure doing away lightness of the work the passage of utilities and the layout of internal wards Uboot will make it possible to optimise the plan layout of pillars without having to keep the specific distributed limitations as well as reducing their number benefiting for more extension spans and without encumbrances the overall thickness of the floor slabs will also be considerably reduced and as a result they use full saving in height will be obtained for each individual forum is the possibility for tower buildings of gaining an extra floor with the same that involved compared floor with a full slab the wind saving will favourably influence the dimensioning of pillars and foundations and the thickness to be reduced in vocations the foundations will be less important and less stressed also behaviour under in case of fire the building greater lightness high inertia and reduced surface area reduced surface area exposed to the effects of heat confer autumn resistances to find from acoustic specific tests guarantee that a floor slab use U-boot technology provides insulation performances that are superior compared with traditional clay or cement systems lightweight lightweight polystyrene zing’s a benefit of no mass importance is the better quality of the concrete surface finish to be left visible or ready for the skimming without further processing to the numerous advantages link to the work itself economic logistic and building site advantages
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are added for construction firms is processing less consumption of concrete and steel less handling n ground and over ground this encumbrance with in the parameters of the site there’s transport and storage changes all things to a ma terial is stackable tough and able to withstand all weather conditions first an hour will be handling a product that is safe from the light non ssoiling and easy to use u-boot is the ideal solution for all buildings in which judging beams structures structures would need to be be avoided typically slab solution is sort together with savings in those concrete and weak the U-boot beton building system is particularly suitable for the construction of high-rise village hospitals commercial centres school buildings parking management residential and industrial buildings. In case of raft foundations having a greater inertia U-boot makes it possible to implement sweaters with a better performance given the same concrete used the grounds are found to have a low carrying capacity furthermore be possible to eliminate or reduce complex and costly foundation pockets. Laying of avoided two-way elements is swift and simple the reinforcement and Uboot elements are laid out on top of the decade according to design specifications ready to receive the concrete casting the layout does not require specialised personal the correct distance between the elements is assured by a spacer jumped equipped with a graduated scale by means of which the widths the o beams being formed with the casting can be rapidly rapidly determined at the top this joint gets inserted inserted in specific looking for difference provided on the upper surface of the Uboot the entire operation is precise handy and rapid once the concrete is poured avoided structure is permanently embedded providing the structure with the desired shape on the technical timing for the setting having last the backing will be dismantled the intros service will prove to be completely smooth formwork can also be used in combination with predominate predominate facing the voided load directly on te plains and completing the finishing casting.
1.1
Parts of U-Beton
The U-Boot beton is named of the whole element which is used in the slab,but they have some parts which is used to connect two consecutive U-Beton structure while installing the U beton. There are mainly three parts, of U-Beton system s ystem I.
Spacer:-Spacer is used to connect two consecutive U-Beton while installing the Beton ,Which helps to fix the position of U-Beton. The rigid interconnection ensures perfect geometric compliance with the design as well as with the bearing capacity of the formworks when of the operators casting under the pressure of the concrete, the weight of the operators and equipment.
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Fig:3.1-Spacer Joint .
Fig:3.2-connected U-Beton by Spacer
The joint fits into the top of the formwork inside notches housing the fixing elements.
II.
Connection Bridge:- The connection bridge is use only of height 16/24cm.
Fig:4.1-connection Bridge
III.
Fig:4.1-connection bridge over U-Beton
Closing plate:-
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Types of U-Beton Generally there are two types of u-beton,
I II
I
Single U-Beton. Double U-beton.
Single U-beton
Where,
H = height of up beton. P = height of foot.
Fig:-5.1-Single U-Beton
Single U-Beton is available of various up beton height and foot height of dimension (52 cm x 52 cm).
1.1 Table no.:-single U-Beton in various Dimension. Foot Height Dimensions height H (cm) p (cm) (cm)
Weight per piece (kg)
Piece Pallet Pallet Pallet volume dimensions* pieces* weight* (m3) (cm) (pcs/PAL) (kg/PAL)
H 10 cm
52 x 52
0-5-67-8-910
1,150
0,0213
110 x 110 x 240
720
840
H 13 cm
52 x 52
0-5-67-8-910
1,240
0,0280
110 x 110 x 250
600
920
H 16 cm
52 x 52
0-5-67-8-910
1,430
0,0350
110 x 110 x 250
440
850
H 18 cm
52 x 52
0-5-67-8-910-12
1,610
0,0396
110 x 110 x 250
460
750
52 x 52
0-5-67-8-910
1,660
0,0430
110 x 110 x 250
460
790
52 x 52
0-5-67-8-910-12
1,720
0,0470
110 x 110 x 250
460
800
H 20 cm H 22 cm
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H 24 cm
52 x 52
0-5-67-8-910-17
1,730
0,0513
110 x 110 x 250
440
860
H 25 cm
52 x 52
0-5-67-8-910
1,780
0,0518
110 x 110 x 250
440
795
H 26 cm
52 x 52
0-5-67-8-910-12
1,840
0,0550
110 x 110 x 245
420
815
H 28 cm
52 x 52
0-5-67-8-910-17
2,000
0,0562
110 x 110 x 250
400
900
II
Double U-beton:-
It is composed by two single element. Where,
H = height of double u-beton P = Height of foot.
Fig:5-Double U-Beton.
The working dimension of double u-beton is (52cm×52cm). This is also available in various size of up u-boot, down u-boot and foot height.
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1.2 Table no.:-Double U-Beton in various Dimension.
Composed of (H cm) Height H (cm)
Dimensions (cm)
Foot height p (cm)
Piece volume (m3) U-Boot UP
UBoot DOWN
H 20 cm
52 x 52
0-5-6-7-8-9-10-15
0,0426
10
10
H 23 cm
52 x 52
0-5-6-7-8-9-10-15
0,0493
13
10
H 26 cm
52 x 52
0-5-6-7-8-9-10-15
0,0563
13*
13*
H 28 cm
52 x 52
0-5-6-7-8-9-10-15
0,0609
18
10
H 29 cm
52 x 52
0-5-6-7-8-9-10-15
0,0630
16
13
H 30 cm
52 x 52
0-5-6-7-8-9-10-15
0,0643
20
10
H 31 cm
52 x 52
0-5-6-7-8-9-10-15
0,0676
18
13
H 32 cm
52 x 52
0-5-6-7-8-9-10-15
0,0700
22*
10*
H 33 cm
52 x 52
0-5-6-7-8-9-10-15
0,0710
20
13
H 34 cm
52 x 52
0-5-6-7-8-9-10-15
0,0746
24*
10*
H 35 cm
52 x 52
0-5-6-7-8-9-10-15
0,0750
22*
13*
H 36 cm
52 x 52
0-5-6-7-8-9-10-15
0,0792
26*
10*
H 37 cm
52 x 52
0-5-6-7-8-9-10-15
0,0793
24
13
H 38 cm
52 x 52
0-5-6-7-8-9-10-15
0,0826
25*
13*
H 39 cm
52 x 52
0-5-6-7-8-9-10-15
0,0830
26
13
H 40 cm
52 x 52
0-5-6-7-8-9-10-12
0,0866
22*
18*
H 41 cm
52 x 52
0-5-6-7-8-9-10-15
0,0868
28*
13*
H 42 cm
52 x 52
0-5-6-7-8-9-10-12
0,0909
24*
18*
H 43 cm
52 x 52
0-5-6-7-8-9-10-12
0,0914
25
18
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H 44 cm
52 x 52
0-5-6-7-8-9-10-12
0,0946
26*
18*
H 45 cm
52 x 52
0-5-6-7-8-9-10
0,0948
25
20
H 46 cm
52 x 52
0-5-6-7-8-9-10-12
0,0983
24*
22*
H 47 cm
52 x 52
0-5-6-7-8-9-10-12
0,0988
25
22
H 48 cm
52 x 52
0-5-6-7-8-9-10
0,1026
24*
24*
H 49 cm
52 x 52
0-5-6-7-8-9-10
0,1031
25
24
H 50 cm
52 x 52
0-5-6-7-8-9-10
0,1063
26*
24*
H 51 cm
52 x 52
0-5-6-7-8-9-10
0,1068
26
25
H 52 cm
52 x 52
0-5-6-7-8-9-10
0,1075
28
24
H 53 cm
52 x 52
0-5-6-7-8-9-10
0,1080
28
25
H 54 cm
52 x 52
0-5-6-7-8-9-10-17
0,1112
26
28
H 56 cm
52 x 52
0-5-6-7-8-9-10-17
0,1124
28
28
PARAMETER AND CONSUMPTION TABLE The Consumption of concrete and concrete saving in double and single u-beton is given as below as per data of of (https://www.dalif (https://www.daliform.com/en/disposable-formw orm.com/en/disposable-formwork-for-two-wayork-for-two-waylightened-voided-slabs/u-boot-beton-technical-data/) is given as below. The consumption of concrete in are varies varies with the total volume of different type of U-beton system.
1.2
Table no.:-Consumption no.:-Consumption of concrete with different volume of U-Beton .
PARAMETER AND CONSUMPTION TABLE Formwork H
cm
10
SINGLE
Piece Base volume
m3
0,0210
cm
52 x 52
Joist width
Joist U-Boot Concrete Concrete centre Beton ® incidence saving consumption distance
cm
cm
pcsm2
m3/pcs
m3/m2
12
64
2,44
0,051
0,049
14
66
2,30
0,048
0,052
16
68
2,16
0,045
0,055
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13
16
18
20
SINGLE
SINGLE
SINGLE
SINGLE
20 DOUBLE
22
SINGLE
23 DOUBLE
0,0280
0,0310
0,0360
0,0390
0,0426
0,4300
0,0490
52 x 52
52 x 52
52 x 52
52 x 52
52 x 52
52 x 52
52 x 52
18
70
2,04
0,043
0,057
20
72
1,93
0,041
0,059
12
64
2,44
0,068
0,062
14
66
2,30
0,064
0,066
16
68
2,16
0,061
0,069
18
70
2,04
0,057
0,073
20
72
1,93
0,054
0,076
12
64
2,44
0,076
0,084
14
66
2,30
0,071
0,089
16
68
2,16
0,067
0,093
18
70
2,04
0,063
0,097
20
72
1,93
0,060
0,100
12
64
2,44
0,088
0,092
14
66
2,3
0,083
0,097
16
68
2,16
0,078
0,102
18
70
2,04
0,073
0,107
20
72
1,93
0,069
0,111
12
64
2,44
0,095
0,105
14
66
2,30
0,090
0,110
16
68
2,16
0,084
0,116
18
70
2,04
0,080
0,120
20
72
1,93
0,075
0,125
12
64
2,44
0,104
0,096
14
66
2,3
0,098
0,102
16
68
2,16
0,092
0,108
18
70
2,04
0,087
0,113
20
72
1,93
0,082
0,118
12
64
2,44
0,105
0,115
14
66
2,30
0,099
0,121
16
68
2,16
0,093
0,127
18
70
2,04
0,088
0,132
20
72
1,93
0,083
0,137
12
64
2,44
0,120
0,110
14
66
2,30
0,112
0,118
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24
25
26
SINGLE
SINGLE
SINGLE
26 DOUBLE
28
SINGLE
28 DOUBLE
29 DOUBLE
0,0470
0,0480
0,0510
0,0520
0,0530
0,0573
0,0590
52 x 52
52 x 52
52 x 52
52 x 52
52 x 52
52 x 52
16
68
2,16
0,106
0,124
18
70
2,04
0,100
0,130
20
72
1,93
0,095
0,135
12
64
2,44
0,115
0,125
14
66
2,30
0,108
0,132
16
68
2,16
0,102
0,138
18
70
2,04
0,096
0,144
20
72
1,93
0,091
0,149
12
64
2,44
0,117
0,133
14
66
2,30
0,110
0,140
16
68
2,16
0,104
0,146
18
70
2,04
0,098
0,152
20
72
1,93
0,093
0,157
12
64
2,44
0,124
0,136
14
66
2,30
0,117
0,143
16
68
2,16
0,110
0,150
18
70
2,04
0,104
0,156
20
72
1,93
0,098
0,162
12
64
2,44
0,127
0,133
14
66
2,30
0,119
0,141
16
68
2,16
0,112
0,148
18
70
2,04
0,106
0,154
20
72
1,93
0,100
0,160
12
64
2,44
0,129
0,151
14
66
2,30
0,122
0,158
16
68
2,16
0,115
0,165
18
70
2,04
0,108
0,172
20
72
1,93
0,102
0,178
12
64
2,44
0,140
0,140
14
66
2,30
0,132
0,148
16
68
2,16
0,124
0,156
18
70
2,04
0,117
0,163
20
72
1,93
0,111
0,169
12
64
2,44
0,144
0,146
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52 x 52
30 DOUBLE
31 DOUBLE
32 DOUBLE
33 DOUBLE
34 DOUBLE
35 DOUBLE
0,0600
0,0639
0,0620
0,0670
0,0680
0,0709
52 x 52
52 x 52
52 x 52
52 x 52
52 x 52
52 x 52
14
66
2,30
0,135
0,155
16
68
2,16
0,128
0,162
18
70
2,04
0,120
0,170
20
72
1,93
0,114
0,176
12
64
2,44
0,146
0,154
14
66
2,30
0,138
0,162
16
68
2,16
0,130
0,170
18
70
2,04
0,122
0,178
20
72
1,93
0,116
0,184
12
64
2,44
0,156
0,154
14
66
2,30
0,147
0,163
16
68
2,16
0,138
0,172
18
70
2,04
0,130
0,180
20
72
1,93
0,123
0,187
12
64
2,44
0,151
0,169
14
66
2,30
0,142
0,178
16
68
2,16
0,134
0,186
18
70
2,04
0,127
0,193
20
72
1,93
0,120
0,200
12
64
2,44
0,164
0,166
14
66
2,30
0,154
0,176
16
68
2,16
0,145
0,185
18
70
2,04
0,137
0,193
20
72
1,93
0,129
0,201
12
64
2,44
0,166
0,174
14
66
2,30
0,156
0,184
16
68
2,16
0,147
0,193
18
70
2,04
0,139
0,201
20
72
1,93
0,131
0,209
12
64
2,44
0,1730
0,177
14
66
2,30
0,1631
0,187
16
68
2,16
0,1531
0,197
18
70
2,04
0,1446
0,205
20
72
1,93
0,1368
0,213
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36 DOUBLE
37 DOUBLE
38 DOUBLE
39 DOUBLE
40 DOUBLE
41 DOUBLE
42 DOUBLE
0,0700
0,0750
0,0740
0,0789
0,0780
0,0810
0,0830
52 x 52
52 x 52
52 x 52
52 x 52
52 x 52
52 x 52
52 x 52
12
64
2,44
0,171
0,189
14
66
2,30
0,161
0,199
16
68
2,16
0,151
0,209
18
70
2,04
0,143
0,217
20
72
1,93
0,135
0,225
12
64
2,44
0,183
0,187
14
66
2,30
0,172
0,198
16
68
2,16
0,162
0,208
18
70
2,04
0,153
0,217
20
72
1,93
0,145
0,225
12
64
2,44
0,181
0,199
14
66
2,30
0,170
0,210
16
68
2,16
0,160
0,220
18
70
2,04
0,151
0,229
20
72
1,93
0,143
0,237
12
64
2,44
0,193
0,197
14
66
2,30
0,181
0,209
16
68
2,16
0,170
0,220
18
70
2,04
0,161
0,229
20
72
1,93
0,152
0,238
12
64
2,44
0,190
0,210
14
66
2,30
0,179
0,221
16
68
2,16
0,169
0,231
18
70
2,04
0,159
0,241
20
72
1,93
0,150
0,250
12
64
2,44
0,198
0,212
14
66
2,30
0,186
0,224
16
68
2,16
0,175
0,235
18
70
2,04
0,165
0,245
20
72
1,93
0,156
0,254
12
64
2,44
0,203
0,217
14
66
2,30
0,191
0,229
16
68
2,16
0,179
0,241
18
70
2,04
0,169
0,251
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43 DOUBLE
44 DOUBLE
45 DOUBLE
46 DOUBLE
47 DOUBLE
48 DOUBLE
49 DOUBLE
0,0840
0,0860
0,0870
0,0900
0,0910
0,0940
0,0950
52 x 52
52 x 52
52 x 52
52 x 52
52 x 52
52 x 52
52 x 52
20
72
1,93
0,160
0,260
12
64
2,44
0,205
0,225
14
66
2,30
0,193
0,237
16
68
2,16
0,181
0,249
18
70
2,04
0,171
0,259
20
72
1,93
0,162
0,268
12
64
2,44
0,210
0,230
14
66
2,30
0,197
0,243
16
68
2,16
0,186
0,254
18
70
2,04
0,176
0,264
20
72
1,93
0,166
0,274
12
64
2,44
0,212
0,238
14
66
2,30
0,200
0,250
16
68
2,16
0,188
0,262
18
70
2,04
0,177
0,273
20
72
1,93
0,168
0,282
12
64
2,44
0,220
0,240
14
66
2,30
0,207
0,253
16
68
2,16
0,194
0,266
18
70
2,04
0,184
0,276
20
72
1,93
0,174
0,286
12
64
2,44
0,222
0,248
14
66
2,30
0,209
0,261
16
68
2,16
0,197
0,273
18
70
2,04
0,186
0,284
20
72
1,93
0,176
0,294
12
64
2,44
0,229
0,251
14
66
2,30
0,216
0,264
16
68
2,16
0,203
0,277
18
70
2,04
0,192
0,288
20
72
1,93
0,181
0,299
12
64
2,44
0,232
0,258
14
66
2,30
0,219
0,272
16
68
2,16
0,205
0,285
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50 DOUBLE
51 DOUBLE
52 DOUBLE
53 DOUBLE
54 DOUBLE
56 DOUBLE
0,0980
0,0990
0,1000
0,1007
0,1054
0,1060
52 x 52
52 x 52
52 x 52
52 x 52
52 x 52
52 x 52
18
70
2,04
0,194
0,296
20
72
1,93
0,183
0,307
12
64
2,44
0,239
0,261
14
66
2,30
0,225
0,275
16
68
2,16
0,212
0,288
18
70
2,04
0,200
0,300
20
72
1,93
0,189
0,311
12
64
2,44
0,242
0,268
14
66
2,30
0,228
0,282
16
68
2,16
0,214
0,296
18
70
2,04
0,202
0,308
20
72
1,93
0,191
0,319
12
64
2,44
0,244
0,276
14
66
2,30
0,230
0,290
16
68
2,16
0,216
0,304
18
70
2,04
0,204
0,316
20
72
1,93
0,193
0,327
12
64
2,44
0,246
0,284
14
66
2,30
0,232
0,298
16
68
2,16
0,218
0,312
18
70
2,04
0,205
0,325
20
72
1,93
0,194
0,336
12
64
2,44
0,257
0,283
14
66
2,30
0,242
0,298
16
68
2,16
0,228
0,312
18
70
2,04
0,215
0,325
20
72
1,93
0,203
0,337
12
64
2,44
0,259
0,301
14
66
2,30
0,243
0,317
16
68
2,16
0,229
0,331
18
70
2,04
0,216
0,344
20
72
1,93
0,204
0,356
The data can be modified as per needs of production.
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2 Installation process The installation installation process of u-boot system is mention below as.
Step:1- The entire slab surface is covered on a mold surface with wood cover (or similar systems). Now place the lower reinforcement over the formwork .
Fig:11-formwork ready with lower reinforcement
Fig:12-reinforcement Fig:12-reinf orcement done over formwork.
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Step:2- Now the place the U-boot system above the lower reinforcement at the specified interval provided by the horizontal lik connector or by spacer. Be assured that beton system is connected by spacer, which held he position of beton system is fix that helps to distribute the stress equally over whole span.
Fig:12-placed u-beton over lower reinforcement
Fig:13-Placing Fig:13-Placin g of beton system done over lower reinforcement.
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Step:3- Now complete the process to place the lower reinforcement over the beton system. The reinforcement make over perpendicular to each other in the direction .
Fig:13- u-beton with upper and lower reinforcement.
Fig:13- Beton system with upper and lower reinforcement done
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Step:4- Now pouring concrete of will be done. Pouring of concrete should be done in two steps, and the thickness of the roof is drained vertically to avoid the floating of the u-boots. The first stage of concreting is done using the super-lubricant. The concentration of concrete is to the extent that it covers the entire bottom layer, and in the second stage, after the initial fixation of the bottom concrete, the upper upp er layer is concreted.
Fig:14- pouring concrete.
Fig:15- pouring concrete done. At the completion of the concreting process, proc ess, the u-boot is completely buried in this space and the upper surface is delivered in a traditional, polished way.
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3 Applications This technology is used to create the slab of high Rise Building, Commercial Building, hospitals, Multilevel parking building and etc. This is also used in the construction of Raft Foundation,where the soil have low bearing capacity. By using this in raft foundation it’s gave great bearing capacity over which can do heavy construction .
Fig:16-Multilevel Fig:16-Multilevel parking Building
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Fig:17- High Rise Building.
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3.1 In Raft Foundation:- Among the various foundation types, rafts are one of the most well known . They The y are used above all in ground conditions with little bearing capacity, or with poor quality soil, large thicknesses must be used which increases the construction cost. in raft foundation we can use this technology techn ology to increase the bearing capacity of soil over which can do heavy construction. It is used in raft foundation due to the following reason, I. II. III. IV.
To increase the bearing capacity where soils having low bearing capacity. Can make heavy construction above this foundation. Concrete saving as compare to making general raft foundation. Provide great bearing capacity with lower thickne ss of slab.
Fig:19(a)-Raft foundation using U-Beton
Dept. Of Civil Engineering,CIEM Fig:19(b)-Raft foundation using U-Beton Page
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4. Advantages 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 Larger spaces. 3. REDUCED SLAB THICKNESS Thinner slabs but with equal loads and clearances, or bigger clearances with an equal thickness. 4. NO BEAMS BETWEEN PILLARS Flat soffit for greater flexibility when installing systems. 5. REDUCTION IN THE NUMBER OF PILLARS – OPTIMISATION OPTIMISATION OF THE SECTION OF PILLARS Facilitated Facilitated use reallocation. reallocation. Wider bays. 6. REDUCTION IN THE OVERALL LOAD OF THE STRUCTURE WEIGHING ON THE PILLARS AND THE FOUNDATION. 7. REDUCED FOUNDATIONS – FOUNDATIONS – LESS LESS DEEP FOUNDATION EXCAVATION Lower costs for foundation excavations. Less excavation. 8. IMPROVED ACOUSTIC BEHAVIOUR Less acoustic transmittance.
4.1 Economic benefits of the u-boot system
Reduce the consumption of concrete and fittings compared to alternative systems
Optimal use of indoor space by reducing the number of columns.
Possibility to provide additional parking lots to remove additional columns
Less cost-less formatting than other torpedo systems for removing the pendant beams in high openings
The flatness of the lower level of the slab, which leads to ease and reduces the cost of plumbing and cutting under the ceiling.
No need for a false ceiling and reduce the cost of installing a false ceiling if necessary.
4.2 Technical Advantages of the u-boot System
Possibility to remove beams between columns or use hollow beams that provide optimal column layout
Reduce the number of columns. Improved design of the reverse plan for the removal of intermediate beams.
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The significant increase in the hardness of the roof slab with its slight weight gain makes it easier to control the ceiling, allowing the spacing of the columns and the implementation of large span structures.
Improved roof performance in terms of sound insulation and plate vibration.
Reducing loads on the soil (if used in the foundation of the U-boot ) and the possibility of removing or reducing the number numbe r and dimensions of the piles in loose soil
Benefits of the architecture of the u-boot system
Provide larger spaces Freedom to act more in architectural design.
Possibility to change user spaces after design and construction.
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REFERENCE BubbleDeck.com Martina Schnellenbach-Held, Schnellenbach-Held, StefanEhmann, Karsten Pfeffer: “BubbleDeck - New Ways in Concrete Building”. Technische Universität Darmstadt, DACON Volume 13, 1998 Martina Schnellenbach-Held, Schnellenbach-Held, Karsten Pfeffer: “BubbleDeck Design of Biaxial Hollow Slabs”. Technische Universität Darmstadt, Darmstadt, DACON Volume 14, 1999 BubbleDeck Report from A+U Research I nstitute /Professor Kleinmann - the Eindhoven University of Technology / the Netherlands, 1999 BubbleDeck Test Report by Koning & Bienfait b.v. / The Netherlands, 1998 Report of BubbleDeck from Technische Universitaet in Co ttbus Report from the Eindhoven University of Technology / the Netherlands: ” B road comparison of concrete floor systems”. December 1997 BubbleDeck Report from Technical University of Denmark, 2003 Report from Adviesbureau Adviesbureau Peutz & Associes b.v.: ”Comparison of BubbleDeck vs. Hollow core”. Netherlands, 1997 "Optimising of Concrete Constructions"; - The Engineering School in Horsens / Denmark, 2000 BubbleDeck.nl : CUR-aanbeveling 86-01 Martina Schnellenbach-Held, Heiko Heiko Denk: “BubbleDeck Time-Dependent Time-Dependent Behaviour, Local Punching Additional Experimental Tests”. Technische Universität Darmstadt, DACON Volume 14, 1999 Schnellenbach-Held, Schnellenbach-Held, M., Pfeffer, K.: “Tragverhalten zweiachsiger Hohlkörperdecken, Beton- und Stahlbetonbau” Stahlbetonbau” 96 [9], 573-578 573-578 (2001) Pfeffer, K.: “Untersuchung zum BiegeBiege- und Durchstanztragverhalten von zweiachsigen Hohlkörperdecken”. Fortschritt-Berichte Fortschritt-Berichte VDI, VDI-Verlag, Düsseldorf 2002 "Punching Shear Strength of BubbleDeck" - The Technical University of Denmark, 2002 BubbleDeck Test report from University of Darmstadt by Markus Aldejohann, Martina Schnellenbach-Held, 2003 BubbleDeck Report from AEC Consulting Engineers Ltd. / Professor M.P. Nielsen The Technical University of Denmark, 1993 BubbleDeck Test report from University of Darmstadt by Markus Aldejohann and Martina Schnellenbach-Held, 2002 TNO-Report on BubbleDeck for the Weena Tower / Rotterdam / the Netherlands, 1997 TNO-Report TNO-Report for 230 mm BubbleDeck: ”Fire”Fire-safe in 120 minutes” the Netherlands, 1999 German Test Certificate Number P-SAC 02/IV-065 according to DIN 4102-2 concerning BubbleDeck® slabs, 2001
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BubbleDeck Test Report from Ian Sharland Lt d Airborne and Impact Sound Insulation”.November 2005 BubbleDeck Test Report from Adviesbureau Advi esbureau Peutz & Associes b.v.: ”Sound Resistance”.March 2004 Report on building systems in relation to seismic behaviour "Investigation of seismic behaviour of hollow-core slabs by various methods" by Dr. M.R. Adlparvar et al., Azad University Tehran South Unit Report from American Society of Civil Engineers: "Structural engineers, sustainability and LEED", p. 33, by Diana Klein Read, Jones and Christoffersen: BubbleDeck LEED points in North America Report from American Society of Civil Engineers: "Structural engineers, sustainability and LEED", p. 39 by Diana Klein Reports from European Concrete Platform: "Concrete for energy-efficient buildings - The benefits of thermal mass" "Cooling and heating of buildings by activating their thermal mass with embedded hydronic pipe systems" by Bjarne W. Olesen, Ph.D. and D. F. Liedelt, Technical University of Denmark Article from Concretethinkerz: "Radiant Floors" "Radiant heating and cooling by embedded water-based systems" by Bjarne W. Olesen, PH.D., Technical University of Denmark "Thermal advantages of concret - a European study" by Jesper Sand Damtoft, Report from Teknologisk Institut "Heating and cooling with thermoactive hydronic elements" Report from COWI, 2006 (in Italian) Soluzioni innovative per l'edilizia "Eindhoven airport parking garage collapses, weeks before opening date by dutchnews.nl, 2017 "Investigation results known of technical cause partial collapse Eindhoven Airport parking garage by BAM Group, 2017 1.https://www.daliform.com/en/disposable-formwork-for-two-way-lightenedvoided-slabs/u-boot-beton-installation/ 2. http://www.iglumalta.com/ubootstructure.html
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