Coffered slab, concentrated load, winklers model of styrodur, ultimate limit state 1. Slab design reading assignment chapter 9 of text and, chapter of aci31802 introduction aci318 code provides two design procedures for slab systems. Here is a detailed article with all the information regarding procedure of rcc slab roof laying. Coffered slabs as a perspective type of the reinforced concrete structures article pdf available in matec web of conferences 86. Formscaffs trough system is used to produce a one way spanning concrete slab with a multiple inverted gutter shaped soffit finish. The result is a flat slab soffit with the benefit of using flat slab formwork. The best how to make a table from a tree slab free download.
Solid slabs can be designed and produced with mild reinforcing or by adding prestressing strands. Lakes environmental slab view emergency release dense gas. Pdf filler slab as a continuous tbeam slab low cost as. Twoway joist concrete slab floor waffle slab system. The advantage of a coffered slab compared to traditional reinforced concrete slab is a possibility of bridging large spans.
The first floor of the twostorey office building consists of a series of coffered precast concrete slabs supported on precast columns. Reinforced concrete effective span centretocentre distance between supports longer dimension of a rectangular panel of slab for yield line calculations modular ratio esec design bending moment per unit width of slab modified to account for axial load moment per unit width about xaxis moment per unit width about yaxis. The kwikstrip system produces a coffer grid spacing of 0. Quiet noisy spaces, redefine the ceiling plane, and add warmth to interiors with new feltworks blades and acoustical panels. Adaptrc is for the analysis andor design of reinforced concrete beams, slabs and floor systems. Ceiling grid, drywall grid, trims, and, transitions for every project need.
Case study on effective and elegant view of coffer slab ijariit. Economy of construction is obviously an important consideration, but this is a qualitative argument until specific cases are discussed, and is a geographical variable. Explore flat slab with free download of seminar report and ppt in pdf and doc format. The size, spacing, and type should match that of the adjacent concrete deck. Analyses are for a onebaywide strip using the equivalent frame analysis method of the aci code. Decorative grid slabs in historical structures apsis in nazare, portugal tomb of galileo, vatican city arch of septimius severus, rome 8. This is the compilation of the presentations available for grid slabs on slideshare. Our plans taken from past issues of our magazine include detailed instructions cut lists and illustrations everything you need to help you build your next project. The williams coffer slab system consists of removable plastic coffer blocks suspended between a series of parallel ribs spanned across the area where a concrete slab is required. The slab model is an atmospheric dispersion model for denserthanair releases. Rcc slab laying is one of major step in any type of construction so it is mandatory to know all the points related to laying rcc slab. Do structural requirements influence the choice of slab type. A suspended ceiling is not needed as services are contained in the suspended floor above the slab.
Anchoring of link slab the portion of the link slab beyond the unbonded length is used to anchor it into the concrete deck slab. Slab view is a graphical user interface for the slab model. Performance of bridge deck link slabs designed with ductile. Coffers were used in historical buildings even before rcc structures came into being. Tips for laying rcc slab roof on 12092014 9091 views 3 comments rcc slab laying is one of major step in any type of construction so it is mandatory to know all the points related to laying rcc slab. Late 16th century coffered ceiling of santa maria in aracoeli, rome coffering on the ceiling of the pantheon, rome 9. Dec 01, 2016 features of the grid slab they are used on flat sites. Uhpc link slab design uhpc workshop june 28th, 2017 jim scarlata, p. Comparative study of reinforced concrete flat slabs with and. Pdf to dwg converter is a powerful tool that easily converts pdf files. Nov 01, 2016 coffers were used in historical buildings even before rcc structures came into being. Manual for the design of concrete and reinforced concrete structures of heavy. Case study on effective and elegant view of coffer slab. They can be used in a variety of applications such as bridges, piers, building floors, roof systems, detention vault lids and boat launches.
An easytouse and learn software for the design, analysis, and investigation of reinforced nonprestressed concrete beams, beam frames, slabs and floor systems a must have production tool in every structural engineering office. It is almost ideally castoff in roof and floor slab. False ceiling is provided below the roof slab on suspended supports. A waffle slab or twoway joist slab is a concrete slab made of reinforced concrete with concrete. Sep 03, 2011 reinforced concrete effective span centretocentre distance between supports longer dimension of a rectangular panel of slab for yield line calculations modular ratio esec design bending moment per unit width of slab modified to account for axial load moment per unit width about xaxis moment per unit width about yaxis. The new formscaff coffers can support a slab thickness of 0. A coffer slab is a type of forms of a slab which has twosided reinforcement fixed outside the mould to give an aesthetic shape of the mould which appeared in the waffle slab.
Free search access too and organized database of free woodworking plans forestrivercedarcreek40cck. Styrodur layer 10 cm thick and ferroconcrete layer 12 cm thick were performed over coffered slab. As part of the rei coop family, were dedicated to making websites and mobile apps that help outdoor enthusiasts connect, share information and get out into the places they love to play. Here, we have tried to gather various reading materials available in the web about flat slab floor system in one place. The ribs between the troughs are reinforced to act as down stand concrete beams.
Although the carrying capacity is still slightly lower than the monolith reinforced concrete slab system, the proposed half slab system is able to apply as the structural component. Typical interior masonry bearing wallfooting detail. Flat slabs may have drop panels at columns and columns may have capitals. Also explore the seminar topics paper on flat 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. Filler slab as a continuous tbeam slab low cost as well as increased strength conference paper pdf available january 2015 with 4,532 reads how we measure reads. A civil engineer must know all the aspects regarding the flat floor system. A suspended ceiling is not needed as services are contained in the suspended floor above the. This strip can then be analyzed by the methods that were used for rectangular beams, the bending moment being computed for the strip of unit width. Gilded coffering on a barrel vault of the apsis in nazare, portugal giuliano da sangallos flat caisson ceiling, basilica di santa maria maggiore, rome decorative coffered slabs in historical structures coffering on the arch of septimius severus, rome a series of these sunken panels were used as decoration for a ceiling or a vault, also called. Solid slabs can be cast with specialty inserts for lifting, mounting or connecting hardware. Coffers can be supported on both the kwikstrip and kwikdeck systems. Slab thickness, t area of steel provided, as pca note.
Decorative grid slabs in historical structures contd. Small 9x6 medium 11x10 large 15x11 xlarge 18x12 quality adjustment. The concrete deck slab in this region shall be roughened to amplitude of 12. Learn more about this and other new solutions from armstrong ceilings. Specify views that have been sent to layout to update in real time, or use edit tools. This paper represents that in the commercial building for the architectural consultant to design and shape by the coffer slab with different types of moulds. The flooring composite slab is made of concrete, steel reinforcement and profiled sheets t153 ruukki serving as a permanent formwork. Flat slab analysis and design designs beamless concrete slab floors flat slab or waffle slab in accordance with aci 318. As part of the rei coop family, were dedicated to making websites and mobile apps that help outdoor enthusiasts connect, share information and. Depending on the application, the ribs will be either precast concrete lattice ribs or wooden purlins. Flat slab analysis and design free version download for pc. False ceiling is an example of modern construction and architecture in both residential.
Features of the grid slab they are used on flat sites. To reduce the stiffness of the link slab, debonding of the link slab over the girder joint for a length equal to 5% of each girder span was also recommended. The lateral loads are independently resisted by shear walls. Analyze and design flat slab or waffle slab floors. The load per unit area on the slab becomes the load per unit length on the slab strip. Twoway joist concrete slab floor waffle slab system analysis and design design the concrete floor slab system shown below for an intermediate floor with partition weight of 50 psf, and unfactored live load of 100 psf. Axonometric view of a mathematical model of the structure is. Flat slab system is an important division of concrete floor system.
A series of these sunken panels was often used as decoration for a ceiling or a vault, also called caissons boxes, or lacunaria spaces, openings, so that a coffered ceiling can be called a. Experimental study of two way half slab precast using. Coffered slab beam structure precast concrete scribd. Introduction coffered slab consists of series of ribs on a small distance from each other and thin plate over them. Late 16th century coffered ceiling of santa maria in aracoeli, rome coffering on the. Then rcc waffle slabs were built which resembled coffers and hence it is also called coffer slab.
Dwg viewer is a free dwg viewer that enables you to view autocad files quickly and accurately. Coffered slabs as a perspective type of the reinforced concrete. Find, read and cite all the research you need on researchgate. Pdf coffered slabs as a perspective type of the reinforced. An ebook reader can be a software application for use on a computer such as. This kind of slab is frequently used in a commercial and industrial estate. Flat slab seminar report, ppt, pdf for civil engineering. Cetco offers a variety of standard details in both autocad. The program reads dwg, dxf, and dwf files without converting them to raster images. Powered by the equivalent frame method of analysis and design per latest american aci 31814 and canadian csa a23. Coffered slab free download as powerpoint presentation. Yoder lumber product showroom 7100 county rd 407 millersburg, oh 44654 phone.
Connecticut soapstone 22 vermont drive willimantic, ct 06226 phone. This link slab concept can be used for new bridge decks and also for replacement of deteriorated joints of existing bridge decks. This model is an ideal tool to predict hazardous zones and potential impacts of accidental releases. Flat slab analysis, design and detailing pdf civil engineering. The best tilton box beam coffered ceiling free download. With the reduction in concrete self weight, large spans can be achieved without the use of prestressed cables, providing the imposed loads are low. The analysis and design follow the equivalent frame analysis method of the aci code, which considers a onebay wide strip of the floor system as a continuous frame. Introduction currently the flat slab system is widely used in construction because of architectural flexibility, more clear space, less building height, easier formwork and shorter construction time.
Armstrong ceiling solutions commercial ceiling, grid. A coffer or coffering in architecture is a series of sunken panels in the shape of a square, rectangle, or octagon in a ceiling, soffit or vault. Get instant access to entire tilton box beam coffered ceiling today. The false celling is usually provided for temperature control heat insulation for ac, to install lights, or to conceal electrical and other networking cables and ugly or too high ceiling. The slab rests on steel tbeams with flanges oriented in the bottom.
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