Twoway concrete floor slab with beams design and detailing. Twoway concrete slab on beams floor analysis and design. Constructing a highperformance concrete slab jlc online. Analysis of flat sanalysis of flat sllabab moment division example 6000 6000 6000 6000 6000 5000 layout of building 7000 5000 a floor slab in a building where stability is provided by shear walls. Joint spacing less than 10 10 to less than 20 20 to less than 30. Concrete slabs are often carried directly by columns without the use of beams or girders. Manual for design and detailing of reinforced concrete to the september 20 code of practice for structural use of concrete 20 2.
Sandwich slabs may have the disadvantage of a larger weight compared to the ribbed ones but on the other hand, they have the advantage that their spans and supports behave in the same proper way. Structural concrete structures reinforced concrete construction. Sep 03, 2011 reinforced concrete sk 33 section through slab showing stress due to moment. Detailing of reinforcement in concrete structures engineers. Where concrete with free watercement ratios significantly lower than the maximum values in table 3. Properties of the surface are determined by the mixture proportions and the quality of the concreting and jointing operations.
Figures 49 through 411, and 415 show configurations with insulation on the exterior surface of the foundation. Oneway slabs normally design as a beam with cables running in the direction of the span at uniform centres. So we used that material everywhere except in the base of the footings. Each detail is available in pdf and autocad dwg formats, go to our secure ftp site for the dwg format drawings. The sketches of the transition details are checked for consistency with the guidelines. Download these free autocad files of construction details for your cad projects. Used concrete slabs for hardcore, free for collection concrete paving slabs rubble. The most common residential foundation materials are concrete masonry i. Structural ribbed concrete slabs cupolex sustainable. Then gravel was placed in the subslab area, and the toprock dd back was braced using small pieces of polystyrene. The appropriate height of cupolex should be selected based upon the required equivalent void and the concrete thickness above the domes and the configuration of the pontex ribs is based on the maximum load capacity and span that the slab is required to support.
Slab ongrade foundation with floor and footing poured as one unit and the floor at, or only slightly above, ground level. Sandwich slabs may have the disadvantage of a larger weight. Design of slab for flexure 067 m unit width of slab. Best practices of concrete pavement transition design and. This section provides information and resources related to design of precast concrete systems, as well as integration of precast with other systems. Twoway joist concrete slab floor waffle slab system. Sandwich slab reinforcement details in reality, sandwich slabs are ribbed slabs with a slab placed both to their upper and lower surface. Below grade parking, mechanical rooms, unoccupied space, elevator pit, sump pit, retention tank. The slab critical section, used for slab strength determination, is the same as that specified in aci 318, although the definition has been modified to clarify that slab critical sections for rectangular supports. Modifica tions have been made to include higherstrength concrete, slabsteel contribution to joint shear, rooflevel connections, headed. If the bearing length at a support is small and close to the free end of a member.
The concrete slab on grade is the most popular foundation. Standard specification for precast concrete manhole sections astm c478 covers the manufacture and purchase requirements of products used for the assembly and construction of circular precast. 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. Flat slab analysis, design and detailing pdf civil. Autocad construction details free download, architectural. This guide identifies the various classes of floors based on use, construction design details, necessary site preparation. Manual for design and detailing of reinforced concrete to the code. Reinforced concrete to the code of practice for structural use of concrete 20. Oneway and twoway slabs oneway slabs transfer the imposed. Reported by committee 302 american concrete institute. Guidelines for dowel alignment in concrete pavements. Steelreinforced slabs, typically between 100 and 500 mm thick, are. Concrete detail for secondary containment floor with two layers of reinforcing.
A slab strip of unit width is analysed using simple beam theory. Waterproofing for walls up to 40cm width based on 2 layers of alternating with a layer of fester felt. Jul 27, 2015 the quality of a concrete floor or slab is highly dependent on achieving a hard and durable surface that is flat, relatively free of cracks, and at the proper grade and elevation. Standard specification for precast concrete manhole sections astm c478 covers the manufacture and purchase requirements of products used for the assembly and construction of circular precast reinforced concrete manholes used in sewer and water works. From consideration of recent research results of connections with concrete. Overlayunbonded, bonded, asphalt concrete ac overlays transition. Pdf slabs are the flooring systems of most structures including. Manual for design and detailing of reinforced concrete to the. The quality of a concrete floor or slab is highly dependent on achieving a hard and durable surface that is flat, relatively free of cracks, and at the proper grade and elevation. Download free, highquality cad drawings, blocks and details of posttensioned concrete organized by masterformat. Cad details concrete 03 05 00 common work results for concrete common work results for concrete cad drawings free architectural cad drawings and blocks for download in dwg or pdf formats for use with autocad and other 2d and 3d design software.
These cad drawings include more than 100 highquality dwg files for free download. Flat slab analysis, design and detailing pdf civil engineering. Adobe pdf file adobe pdf file interface details window, floor and roof. Crawl space foundation with unfinished dirt floor at or below adjacent ground level. One hundred twenty major categories of fully editable and scalable drawings and details in autocad format. However, the mineral wool we used toprock dd from rockwool is sufficient to support the weight of a concrete slab. The slab critical sections for several support geometries are shown in fig. Slabongrade foundation with floor and footing poured as one unit and the floor at, or only slightly above, ground level. Manual for design and detailing of reinforced concrete to. Slab design reading assignment chapter 9 of text and, chapter of aci31802 introduction aci318 code provides two design procedures for slab systems. Basics of reinforced concrete slab design slabs are generally designed on the. Concrete forms and pouring a concrete slab the family handyman. Va standard details were updated in early 2009, div 22 and div 26 in early 2014, and the steam portion of div 23 in late 2017.
Slab thickness and reinforcing steel areas for secondary containment floors with tank loading only. Reinforced concrete slab design and detailing guidelines for depth of slab. The lateral loads are independently resisted by shear walls. The detailing requirements of a reinforcement bar depend on the reasons for its. Figures 412 through 414 show variations where the slab is the primary location for insulation. Posted by aaron in for sale, freebies in bishopsworth. Reinforced concrete sk 33 section through slab showing stress due to moment.
Preservativetreated wood, precast concrete, and other methods may also be used. Manual for design of slabs, pile caps and footings. A concrete slab is a common structural element of modern buildings, consisting of a flat, horizontal surface made of cast concrete. Here, we have tried to gather various reading materials available in the web about flat slab floor system in one place. A civil engineer must know all the aspects regarding the flat floor system. Cad details concrete 03 05 00 common work results for concrete common work results for concrete cad drawings free architectural cad drawings and blocks for download in dwg or pdf.
General notes university of colorado colorado springs. Structure detail in concrete slab cad design free cad. Advantages and disadvantages of each of these slab designs are provided, including the ability of some slab designs to minimize cracking and curling more than others. In this section several typical slabongrade sections are illustrated and described. Minimum free edge distance for punching shear 4 times slab thickness. Figures 49 through 411, and 415 show configurations with insulation on.
Reinforced concrete slab design guidelines the constructor. Founded in 1904 and headquartered in farmington hills, michigan, usa, the american concrete institute is a leading authority and resource worldwide for the. Autocad details dwg and dxf formatted cad detail files available for free viewing and downloading. Load transfer in a oneway slab, b twoway slab nilson fig. 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. The numbering system relates to specification masterformat 2004. Founded in 1904 and headquartered in farmington hills, michigan, usa, the american concrete institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensusbased standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete design. For reinforced concrete beams and slabs, cracking is deemed to be controlled. Slab thickness and reinforcing steel areas for secondary containment floors. Oneway and twoway slabs university of asia pacific. Find the following parameters for design moments in step 2 per unit width step 4 note. Flat slab system is an important division of concrete floor system. Va standard details div 00 architectural all details. Advantages and disadvantages of each of these slab.
Find the best details for your project as a professional courtesy, hycrete, inc. For uniformly distributed loads of w per square foot of the. The user maintains all responsibility for verifying the applicability and suitability of the technical service or information provided. Plumbing typical details part 01 cad block and house plan. The appropriate height of cupolex should be selected based upon the required. Please refer to the cupolex and pontex technical data sheet for details of the physical properties of the product range. The slab critical section, used for slab strength determination, is the same as that specified in aci 318, although the definition has been modified to clarify that slab critical sections for rectangular supports may be assumed to have a rectangular shape. From consideration of recent research results of connections with concrete compressive strengths of up to 15,000 psi fig. Steelreinforced slabs, typically between 100 and 500 mm thick, are most often used to construct floors and ceilings, while thinner mud slabs may be used for exterior paving see below. Reinforced concrete slab design and detailing guide is456.