Find the following parameters for design moments in step 2 per unit width step 4 note. Oct 22, 2019 while a true biaxial slab as the bubbledeck bubbldeeck must be calculated as a solid slab, ribbed slab systems, like the uboot system, consisting of a grid of orthogonal i beams, must be calculated as beams. Slab design reading assignment chapter 9 of text and, chapter of aci31802 introduction aci318 code provides two design procedures for slab systems. Sep 05, 2017 bubbledeck biaxial hollow floor slab system, a technology that increases large span lengths and makes floors lighter by reducing the weight while maintaining the performance of reinforced concrete. While a true biaxial slab as the bubbledeck bubbldeeck must be calculated as a solid slab, ribbed slab systems, like the uboot system, consisting of a grid of orthogonal i beams, must be calculated as beams. Bubble deck slab, bridge deck slab, finite element method. This new slab can solve both of these problems by reducing. Bubbledeck is the patented integration technique of linking air, steel, and concrete in a twoway structural slab. Possibility technilogy gain floors at the same building height towers and building volume. Oneway simply supported slab analysis and design of the slab similar to design of simply supported beam as indicate in the previous chapter. Lecture series on design of reinforced concrete structures by prof. Hollow plastic balls are inserted into the slab and held in place by reinforcing steel.
The simple bubbledeck is cast over the pre fabricated bubble lattice on traditional formwork. Bubble deck slab is a method of virtually eliminating all concrete from the middle of a floor slab, which is not performing any structural function, thereby dramatically reducing structural dead. Bubble deck slab seminar report, ppt, pdf for civil engineering. Also explore the seminar topics paper on bubble deck slab with abstract or synopsis, documentation on advantages and disadvantages, base paper presentation slides for ieee final year civil engineering ce or ieee civil construction btech, be, mtech students for the year 2015 2016. Bubbledeck is a really clever solution to this problem.
The system was invented in denmark after a government sponsored competition looked for new. The recommendations derived from these and other studies vary from extremely light to extremely heavy. Click to download the design guide since 1999 the bubbledeck lightweight precast concrete floor system has been used in the construction of more than 400 buildings around the world. The bubbledeck system was also nominated for the european environmental prize for sustainable development.
Properties degradation environmental impact recycling segregation in techhology alkalisilica reaction. This pdf file contains a chapter of 23 pages with various aspects of flat slabs including four example of flat slab design. By using bubbledeck method, the quantity of concrete and cement is reduced by 30 to 50% for the same built surface compared with the. The bubbledeck system is based upon the patented integration technique the direct way of linking air and steel.
Aug 18, 2019 the simple bubbledeck is cast over the pre fabricated bubble lattice on traditional formwork. Bubbledeck can reduce construction material weight up to 50%. For the same amount of steel and concrete, bubbledeck has 40 % larger span. Voided biaxial slabs are reinforced concrete slabs in which voids reduce the amount of. The noise reduction with bubbledeck was 1 db higher than hollow core. Bubbledeck design guide for compliance with bca using.
Bubble deck slab is a method of virtually eliminating all concrete from the middle of a floor slab. The hollow spheres incorporated in the slab reduce the dead weight by up to 35% compared to a solid slab with same bearing capacity. As a result bubbledeck slabs can be lighter, stronger and thinner than regular reinforced concrete slabs. While a true biaxial slab as the bubbledeck system must be calculated as a solid slab, ribbed slab systems, like the uboot system, consisting of a grid of orthogonal i beams, must be calculated as beams. The end result eliminates the use of concrete that has little carrying effect while maintaining the twoway span biaxial strength. Bubbledeck slab system concrete building engineering. The designer of the building will design the slabs corresponding to the efforts given by the dead and live loads and the recommendations of the producer. In any flat slab, design shear resistance is usually critical. Understanding the concept of bubble deck civil engineering. Jun 16, 2019 joseph moniera french gardener, patented a design for reinforced garden tubs inand later patented reinforced concrete beams and posts for railway and road guardrails. The composite slabs are made of bubbledeck type slab elements with.
Jan 31, 2019 the bubbledeck system offers a wide range of advantages in building design and during construction. Bubbledeck is the invention of jorgen bruenig, who devised the first biaxial hollow slab now known as bubbledeck in denmark. Recently, findorff utilized bubbledeck technology at our prohealth care central utility plant project in waukesha, wis. Bubbledeck design of bubbledeck slabs with the idat cad system. The composite slabs are made of bubbledeck type slab elements with spherical gaps, poured in place on transversal and longitudinal directions. Deck voided flat slab solutions technical manual and documents 2007. Flat slab analysis, design and detailing pdf civil. Sep 03, 2011 reinforced concrete sk 33 section through slab showing stress due to moment. Introduction to bubbledeck advancing concrete design. Bubble deck slab is a method of virtually eliminating all concrete from the middle of a floor slab, which is not performing any structural function, thereby dramatically reducing structural dead weight. Dhang, department of civil engineering, iit kharagpur. These bubbles can decrease the dead weight up to 35% and can increase the capacity the capacity by almost 100% with same thickness.
Bubbledeck international as bdi exploring optimizes the bd technology. Also explore the seminar topics paper on bubble deck slab with abstract or synopsis, documentation on advantages and disadvantages, base paper presentation slides for ieee final year civil engineering ce or ieee civil construction btech, be, mtech students for the year. Multistorey building in the future to develop constructions as flexible and generally applicable that they will be able to pick up changes in a time period reaching far into the next century. Bubble deck slab seminar report, ppt, pdf for civil. Bubble deck slab the best solution for above two problems is bubble deck slab bubble deck slab is a biaxial voided concrete slab in which high density polythene hollow spheres replace the ineffective concrete in the centre of concrete slab. These void formers are most commonly made of plastic such as highdensity polyethylene, and may use recycled materials. The bubbledeck type slab bd is a reinforced concrete rc flat slab that includes recycled plastic hollow spheres rphs in its core for decreasing its dead weight. Pdf structural behavior of bubble deck slab researchgate. Advantages in the building design and building process are not taken into account. Jun 26, 2019 the bubbledeck system is based upon the patented integration technique the the bubbledeck is a twoway hollow deck in which plastic balls serves the. Bubble deck slab is a method of virtually eliminating all concrete from the middle of a floor slab, which is not. Highdensity polyethylene hollow spheres replace the ineffective concrete in the center of the slab, thus decreasing the dead weight and increasing the efficiency of the floor. Architectural freedom, flexibility in design and use, fast and inexpensive, savings and environmental benefits. The bubbledeck system is a simple solution that eliminates non working dead load in concrete slabs while fully retaining strength.
Jul 21, 2019 the simple bubbledeck is cast over the pre fabricated bubble lattice on traditional formwork. Bubbledeck slab pdf the composite slabs are made of bubbledeck type slab elements with. Department of mechanics, materials and structures english. Pdf bubbledeck is the invention of jorgen bruenig, who devised the first. Bubbledeck is a voided structural slab design that uses recycled plastic spheres sandwiched between layers of reinforcing steel lattice to introduce voids into the twoway slab. Department of mechanics, materials and structures english courses.
Plastic balls serve the purpose of eliminating concrete which has weight but no carrying effect. Bubbledeck biaxial hollow precast slab system youtube. Analysis of bubble deck slab design by finite element method. Bubbledeck voided flat slab solutions technical manual and. Bubbledeck installation guide specification build more with less. The idea of placing large blocks of light material in the slab suffers from the same flaws, which is why the use of these systems has never gained acceptance and they are only used in a limited number of projects in spanishspeaking countries. All voided biaxial slabs incorporate an array of rigid void formers which contain air within the voids. Pdf bubble deck slab is a method of virtually eliminating all concrete from the. Bubbledeck design guide for compliance with bca using as3600. This project introduces the bubble deck slab its uses and advantages to. For 1m slab width, moment, shear force, oneway continuous slab for continuous slab, moment and shear force can be obtained from table 3. Bubbledeck concrete slabs design guide register to.
However, their voids are placed on the underside of the slab rather than embedded within the slab, leading to lower shear strength and fire resistance. Explore bubble deck slab with free download of seminar report and ppt in pdf and doc format. Bubble deck slab bubble deck slab using pvc materiel to increase the strength of the slab. Jul 27, 2017 the bubbledeck system virtually eliminates dead weight concrete from the middle of a floor slab by incorporating recycled plastic bubbles as a void. Page 5 of 10 dynamic punching shear report, punching shear strength of bubbledeck by anders bronden, jens christian haukohl and martin hoft jorgensen the technical university of denmark enclosure b5. Manual mounting of reinforcement meshes on the building site is avoided. One important tool to achieve this is the finite element method. Design of slab for flexure 067 m unit width of slab. Introduction to bubbledeck bubbledeck is a prefabricated structure with superior characteristics to solid slab. Bridge design is dominated by the dead weight of the structure and by concentrated stresses from vehicular traffic. Bubbledeck north america llc advancing concrete design. Bridge design is dominated by the dead weight of the structure and by. The void formers are produced in a variety of shapes depending on the design of the slab. Flat slab analysis, design and detailing pdf civil engineering.
The revolutionary bubbledeck method virtually eliminates concrete from the middle of a slab not performing any structural function, thereby dramatically reducing structural. The floor slab design procedure presented the maximum allowable stationary live load is limherein is based on limiting the critical tensile stresses ited by both the positive bending moment stress produced within the slab by the vehicle loading, as under the load and the negative bending moment in tm 58226afm 887, chap. Bookmark file pdf bubble deck voided flat slab solution bubble deck voided flat slab solution bubbledeck biaxial hollow precast slab system the bubbledeck system virtually eliminates dead weight concrete from the middle of a floor slab by incorporating recycled plastic. The bubbledeck system virtually eliminates dead weight concrete from the middle of a floor slab by incorporating recycled plastic bubbles as a void. Bubbledeck design guide for compliance with bca using as3600 and ec2 prepared by. Bubbledeck can make a big contribu tion towards achieving breeam targets. A comparison was made between bubbledeck and hollow core deck prior to the construction of weena tower. A two way spanning voided biaxial slab construction compared to a traditional two way spanning non voided biaxial slab construction. Own weight of the bubbledeck slab element with gaps bd is function of the gaps dimensions. Waffle slabs are a common type of hollowcore slab which use the same principle as voided biaxial slabs. Bubbledeck is a light, biaxial, flat slab technology.
Millennium tower rotterdam design by wzmh architects and ags architects, completed in 19972000. Apr 30, 2012 bubble deck technology uses less concrete by filing the slab with beach balls this is a really clever idea that takes out all the stuff in the middle that you dont really need, and replacing it. Schematic design basic principle as a general guide for project scoping purposes the maximum achievable spans for each bubbledeck slab depth is usually determined by deflection limitations. Apr 30, 2019 while a true biaxial slab as the bubbledeck system must be calculated as a solid slab, ribbed slab systems, like the uboot system, consisting of a grid of orthogonal i beams, must be calculated as beams. Blog written by findorffs evan bond, project engineer. By adapting the geometry of the ball and the mesh width, an optimized concrete construction is. Due to the bubbledeck technologys green credentials, the use of the. Background bubbledeck is a slab system that has become very popular in europe and around the world in the past decade. This weight reduction allows for further reductions in the building structure, through reduction in or of columns and bearing walls.
The bubbledeck slab is a revolutionary biaxial concrete floor system developed in europe. Bubble deck technology uses less concrete by filing the. The designer of the building will design the slabs corresponding to the efforts. Bubbledeck slab elements are plates with ribs on two directions made of. Design of bubbledeck slabs 7 strength in bending 7 strength in shear 8 splice crack width check 14 references 15 design guide to bca. Since then, bubbledeck has been taking off in a big way in. Click here to read the building and construction canada article. The bubbledeck is a twoway hollow deck in which plastic balls serves the purpose of eliminating concrete that has no carrying effect. We can then provide you with important updates as they are released. Punching behavior of bubbledeck type reinforced concrete. Page 4 of 10 shear capacity in % of solid deck ad 2. Reinforced concrete sk 33 section through slab showing stress due to moment.
685 751 1495 1541 1038 1312 1045 582 324 1460 1285 698 437 457 591 631 1554 587 154 430 1152 391 1080 465 33 924 1248 402 463 1090 828 980 165 154 618 451 897 832 1235