D E S I G N E R S G U I D E

Transcription

1 D E S I G N E R S G U I D E This publication gives a general description of design parameters. It is responsibility of the users to ensure that their use is appropriate for any particular application and that such application complies with all relevant local and national legislation, standards, codes of practice and other requirements. HOLEDECK and its subsidiaries hereby disclaim all liability howsoever arising from any error in or omission from this publication and all consequences of relying on it. HOLEDECK is a registered trademark.

2 TABLE OF CONTENTS A. DESIGN PARAMETERS 1. PRODUCT DIMENSIONS 2. SPANS 3. OVERHANGS 4. PILLARS POSITION 5. ÁBACUS 6. HOLES 7. LOAD BEARING WALLS 8. PARTITIONS UNION 9. STRUCTURAL PARAMETERS B. VARIANTES HOLEDECK 1. ONE-WAY HOLEDECK 2. POST-TENSIONED HOLEDDECK 3. TRIANGULAR WAFFLE C. POSIBILIDADES ESPACIALES Y EJEMPLOS DE DISEÑO 1. STANDARD SPANS 2. LARGE SPANS 3. OVERHANGS 4. FREE POSITION OF SUPPORTS 5. CHANGES OF DIRECTION 6. CURVE GEOMETRY 7. HOLEDECK + BEAMS 8. HOLES 9. LOAD BEARING WALLS 10. ONE-WAY HOLEDECK 11. POST-TENSIONED HOLEDECK 12. TRIANGULAR WAFFLE D. GLOSARY E. REGULATION CODES 1

3 DESIGN PARAMETERS 1. PRODUCT DIMENSIONES Holedeck is modulated according to a distance between centres of 80 x 80 cm. It allows accommodating facilities and elements designed for standard roofs of 60 cm. The standard edge is 45 cm. Compression layer varies from 5 to 10 cm depending on the span and the loads that the slab has to support. Holedeck perforations have an area of m2. It is possible the simultaneous passage of diferents services systems. 2

4 2. SPANS Holedeck supports spans between 7.5 m and 12.5 m. For longer spans will be necessary posttensioning in 1 to 2 directions. Spans = 7,5 12,5 m Short spans (7,5 9 m) Standard spans (9 10,5 m) Long spans (10,5 12 m) 3

5 3. CANTILEVER Holedeck is perfect for the attainment of different types of cantilevers: latticework, passable or habitable overhangs Latticework overhang Passable overhang Habitable overhang SECTION DETAIL. RESOLUTION OF OVERHANGS The maximum length of the cantilever is 4.5 m. However it will depend on different factors: Spans Permanent loads. Variable loads. 4

6 4. PILLARS POSITION The correct distribution of pillars for a waffle slab pathway is to form a grid as regular as possible, with spans that differ less than 1 meter. It is important that the supports are attainment separate to the slab edges. Holedeck, however, supports any distribution of the pillars, facilitating a freedom design and avoiding the problems of fit a reasonable and compatible structure with partitions. REGULAR GRID VARIABLE SPANS GRID FREE POSITION OF SUPPORTS 5

7 5. ABACUS It is not necessary to off-hook the abacus. It will be always embedded in the thickness of the slab, without acknowledging their presence clambering underneath As a minimum we recommend an abacus dimension of 0.10 L. This measure will change depending on the next parameters or factors: - Geometric requirements of modulation and staking parts. - Edge pillars and overhangs. - Spans decompensation - Localized loads 3 x 3 (short spans) 4 x 4 (standard spans) 5 x 5 (long spans) Depending on the regulations it will be possible to replace the abacuses by beams. Perforations will be able to be made in the beams before the spill of the concrete. 6

8 6. HOLES Holedeck supports holes with the measures indicated in the following image, depending on the distance to the pillars: For more complex holes it would be necessary to make a preliminary analysis; it is impossible to establish fixed rules that solve all cases. However, it is recommended to extend the beams which border the gaps to the pillars if it is possible; if it were not possible, anchor them in the abacus or solvents areas nerves. Smaller holes can be made putting a special part in the cuvette before pouring the concrete. These holes are perfect for passing facilities or allow the passage of the solar light. 7

9 7. LOAD BEARING WALLS In the cases which load bearing walls instead of pillars, it will not be necessary to made abacuses to resist the punching efforts. 8. PARTITIONS UNION It is recommended that the partitions be in the structural nerves or in the solid parts of the slab. 1 Auxiliary part 2 Acoustic Band 3 Partition In any case, you can resolve it putting false ceiling in the pertinent area 1 Auxiliary part 2 Acoustic Band 3 Partition 4 False ceiling 8

10 9. STRUCTURAL PARAMETERS Resistance to bending: the inertia of the section, compared with the same area of a conventional reinforced concrete slab is 18 times greater. Horizontal seismic Digs: compared to conventional waffle slab HOLEDECK reduces its weight by around 15%. This causes the horizontal thrust in case of earthquake decrease by 8 to 10%. Structural parameters: A 1.075cm2 Ix cm4 Approximate Amounts table armed Holedeck Under light load Reinforced top, bottom and mesh including, nerves area 9

11 HOLEDECK VERSIONS 1. POST-TENSIONED HOLEDECK With the post-tensioning system Holedeck can span up to 18 meters. Post-tensioning can be in one or both directions. 2. ONE-WAY HOLEDECK 3. TRIANGULAR WAFFLE. 10

12 SPATIAL POSIBILITIES AND DESIGN EXAMPLES HOLEDECK allows almost total freedom in the design of floor plans. In the table are given just a few ideas of the possibilities offered by: 11

13 GLOSARY Span: distance between two parallel and consecutive lines of supports. Supports band: it is the slab band of the slab with wide to each side of the support equal to 0,25 L2. The support bands include the beams, in case of existing. Central band: she is the limited one by two bands of supports.. Abacus: zone of a slab around a support or its capital that is made solid with or without rebound. In solid slabs it can t exist and, if it exists, it can go accompanied of a capital. In waffle slabs its existence is mandatory, being able to go accompanied or not of capital. Capital: widening of the superior end of a support that serves as union between this one and the slab. Cantilever: end of a structural element that stand out the wall or element that maintains them and that has possibility of turn and displacement. Post tensioned concrete: concrete that is put under tension by means of cables inserted in its cases, once this one has hardened. Beam/traverse: structural element that is placed horizontally and served as support of loads of other structural elements. Edge beam: beam located between two structural pillars and that serves to support the edge of a cover or built the framework for. Edge: thickness of the forged one. Bucket: recoverable mold of formwork for the accomplishment of waffle slabs. Punching: failure of a firm one under the effect of one loads direct excessive, that causes a collapse located of the firm one in the load point. The effort of punching in a piece is caused by tractions due to the tangential tensions produced by a load or reaction located in a small surface of a bidirectional concrete element, around the support. 12

14 REGULATION CODES - Spain: CÓDIGO TÉCNICO DE LA EDIFICACIÓN (CTE). - DB SE: Seguridad estructural. Bases de cálculo - DB SE-AE: Seguridad estructural. Acciones de la edificación - DB SE-C: Seguridad estructural. Cimientos - DB HR: Protección frente al Ruido - DB SI: Seguridad en caso de incendio. INSTRUCCIÓN DE HORMIGÓN ESTRUCTURAL (EHE 08) NORMAS TECNOLÓGICAS DE LA EDIFICACIÓN (NTE) - European Union: EUROCODE (EC). - France: CODE DE LA CONSTRUCTION ET DE L'HABITATION. - United Kingdom: UNITED KINGDOM BUILDING REGULATIONS. - Holland: BOUWBESLUIT Switzerland: NATIONAL BOARD OF HOUSING, BUILDING AND PLANNING BUILDING REGULATIONS. BOVERKET BUILDING CODE (BBR). - United States: Code from AMERICAN CONCRETE INSTITUTE (ACI). - Canada: NATIONAL BUILDING CODE OF CANADA (NBCC). - Bolivia: REGLAMENTO BOLIVIANO DE CONSTRUCCIÓN DE EDIFICACIONES. RBC. - Argentina: REGLAMENTO INPRES-CIRSOC REGLAMENTO ARGENTINO PARA CONSTRUCCIONES SISMORRESISTENTES. PARTE II AÑO CONSTRUCCIONES DE HORMIGON ARMADO. - Mexico: REGLAMENTO DE CONSTRUCCIONES DISTRITO FEDERAL. NORMAS MEXICANAS ONNCCE (NMX-C-ONNCCE). HOLEDECK INTERNATIONAL PHONE c\ Juan de Urbieta 10, bjo MADRID SPAIN info@holedeck.com 13