Aug 28, 2016 cantilever slabs are a typical one way slabs. N c,f 0,85 f cd b h c reduced plastic moment resistance of the sheeting. Oneway and twoway slabs oneway slabs transfer the imposed. Deck is 46 ft wide with a 15 degree skew roadway is 44 ft wide. Even while designing they are considered as oneslabs with cantilever fixed or continuous at supports. Sci p300 composite slabs and beams using steel decking best. Slab design reading assignment chapter 9 of text and, chapter of aci31802 introduction aci318 code provides two design procedures for slab systems. Special design example 5172017 20 from earlier in the memo, for a 7 slab with 2 wearing course, eod thickness and coping thickness must be 9 using the new geometry for the edge of deck, the critical section depth i. The trial depth is selected based on spandepth ratio of 7, as in is. Generally, load set 2 will be used for beams and slabs in the uk as it. In the temporary condition no water will be taken into account.
In this project, the design of composite slab and connection with the beam using shear connectors have been done using insdag design manual based on assumptions of eurocode4 and is. Cantilever slab design part1 by parag kamlakar pal. Design of cantilever slab spreadsheet download link more from my sitevoided twoway slab design based on aci 31814 spreadsheetdeck toggle navigation. Pdf design envelopes for cantilever slabs to resist. How to design concrete structures using eurocode 2. Design an interior panel of a flat slab of size 5 m. Using aashto lrfd bridge design specifications 4th ed. Flat slab analysis, design and detailing pdf civil engineering.
Design of slab for flexure 067 m unit width of slab. Manual for design and detailings of reinforced concrete to code of practice for structural use of concrete 2004. Analysis and design of cantilever slab free download as word doc. Example on design of slab bridge design data and specifications superstructure consists of 10m slab, 36m box girder and 10m tgirder all simply supported. The decking should not cantilever beyond a support more than 600 mm or. Here, we have tried to gather various reading materials available in the web about flat slab floor system in one place. The design of composite slabs and beams is discussed in detail in relation to the eurocodes and bs 5950. Design envelopes for cantilever slabs were developed using kingery and bulmashs 1984. The construction and design of concrete slabs on grade. The dimensions of an interior bay are shown in figure 1. Rail anchor slab design rail anchor slabs have been used with good performance under allowable strength design asd practices. Use the aci 318 direct design method to design an interior bay of a flat plate slab system of multi bay building. Manual for design and detailings of reinforced concrete to.
To make the slab design independent of the type of rail, we will place the wheel load 1 from the nominal face of the rail 1ft from the edge of the slab. Aashto lrfd has since become the design standard and uses impact loads significantly larger than those in asd. Bridge approach slab analysis and design incorporating elastic soil support presented by. Reinforced concrete design 1 design of slab examples and. Cantilever slab design slab design slab 7 slab work m. Composite slab worked example 1 made by sssr date 140500 structural steel design project calculation sheet checked by pu date 080800 check the adequacy of the continuous composite profiled deck slab with spans of 3. Flat plate concrete floor system does not use beams between columns or. Introduction concrete slabs on grade are a very common type of concrete construction. Heavy loads in building s such as warehouses include moving load s, stationary live loads, and wall loads. The recommendations derived from these and other studies vary from extremely light to extremely heavy.
The composite slab which has to be placed on a conference hall has been selected for this project. Design of slab examples and tutorials by sharifah maszura syed mohsin example 2. Design envelopes for cantilever slabs were developed using kingery and bulmashs 1984 empirical method for estimations of blast parameters and the procedures described by cormie d et al. Only the design of slab bridge will be used for illustration. Assume partitions cannot be damaged by deflections. Deck overhang design minnesota department of transportation. The stem is a vertical cantilever beam, acted on by the horizontal earth pressure. The mechanical behaviour of reinforced concrete cantilever walls is. A six storey building for a commercial complex has plan dimensions as shown in figure 1. Example calculations for this and all other example problems the following data from the canam united steel deck design manual and catalog of steel deck products will be used and are worked using lrfd methodology.
Retaining wall design temporary condition the following calculations will consider the worst case. Design of cantilever slab civil engineering youtube. An example would be a case in which a large portion of the. Structural steel composite slab 1 of 7 rev design project.
To provide a complete idea, the stress computation, the reinforcement detailing, shear design, the jacking procedure etc. This manual p rescribes the criteria for the design of concrete floor slabs on grade in buildings for heavy loads and is applicable to all elements responsible for military construction. The slab is supported on beams of size 225 x 500 mm spaced at 4. Analysis and design of cantilever slab beam structure. These materials are originally located at different websites. Structural loads, structural analysis and structural design are simply explained with the worked example for easiness of understanding. Design of cantilever slab spreadsheet engineering books.
This example is to be used for educational purposes only. Comprehensive design example for prestressed concrete psc. Design of cantilever slab spreadsheet download link. Nagy 1 and istvan szatmari 2 technical university of budapest, department of steel structures h1521 budapest summary there is an enhanced intention imposed on building construction industry to improve time and structural efficiency of structures. Find the following parameters for design moments in step 2 per unit width step 4 note.
This lab manual was prepared with the help of the renowned text book design of. Mar 23, 2015 if adjacent spans are not equal, the extension of the ve reinforcement beyond each face shall be based on the longer span. Structural design of cantilever slabs solved example. The new teaching format allows instructors to incorporate additional. Continuous one way slab figure 1 shows a clear area of 12 m x 8. Design of the composite flooring slab with profiled sheets t153 ruukki for a residential building, 35 pages, 1 appendix saimaa university of applied sciences, lappeenranta technology, civil and construction engineering civil and construction engineering bachelouv theviv 201.
To achieve this, architects normally extend the slab beyond the ground floor building line, thereby forming a cantilever. The slab is designed in category a see eurocode 2, part 2, table. They are projections from wall face of lintel beams or floor slabs. Example design a cantilever projecting out from a room slab extending 1. If you need to print pages from this book, we recommend downloading it as a pdf. All slab reinforcement should be anchored property at discontinuous edges.
Element designs with notes and discussions have added to get comprehensive knowledge. In this post, we are going to show how we can analyse and design cantilever slabs subjected to floor. A typical example of the decking layout for a composite floor is shown in. Design of strap or cantilever footings falmatasaba. The lrfd impact loads result in a rail anchor slab that is much larger than what has proven. Ce 437537, spring 2011 retaining wall design example 3 8 3. Longitudinal steel should be detailed in a 2bar alternating pattern, with one of the bars continuous through the slab. Design assumptions strap is infinitely rigid strap is a pure flexural member and does not take soil reaction. The building is located in seismic zone iii on a site with medium soil. Twoway flat plate concrete floor system analysis and design the concrete floor slab system shown below is for an intermediate floor to be designed considering partition weight 20 psf, and unfactored live load 40 psf. Master of science and hereby certify that, in their opinion, it is worthy of acceptance.
A civil engineer should study these lectures and materials for structural engineering acumen. Unfortunately, this book cant be printed from the openbook. The construction and design of concrete slabs on grade d. The cross section of the profiled sheeting is shown in fig. Bss090119991 abstract this design example illustrates the empirical design method for composite concrete bridge decks specified in article 9. Design compressive normal force in the concrete flange. Even while designing they are considered as one slabs with cantilever fixed or continuous at supports.
Comprehensive design example for prestressed concrete psc girder superstructure bridge design step 7 design of substructure design step 7. To confirm with this, strap is constructed slightly above soil or soil under strap is loosened. The preparation of this document was funded and commissioned by the metal. Integral abutments are used to eliminate expansion joints at the end of a bridge.
Lrfd castinplace cip slab span design example county. Use i wsd, ii usd to design the twoway slab shown below, carrying floor finish 30 psf, random wall 50 psf and live load 60 psf given. Step 2 design forces draw panel of slab and indicate maximum design moments, shears and in. Pdf shear capacity of reinforced concrete slabs under. Asce, secb course content slab on grades construction. Example design combinations for deflection quasipermanent derived for typical uk reinforced concrete design. In addition to general ultimate and serviceability limit state design issues, practical design considerations such as the formation of holes in the slab, support details, fire protection, and attachments to the slab are discussed. Pdf cantilever slab design ramjan shehzaad academia. Title reinforced concrete slab design using the empirical method publication no. Design of reinforced concrete slab with regard to explosions master of science thesis in the masters programme structural engineering and building performance design rickard augustsson markus harenstam department of civil and environmental engineering division of structural engineering concrete structures chalmers university of technology. This guide covers the design and construction of composite slabs and beams, and. Cantilever slabs are common features in buildings due to the need to have bigger spaces at upper floors.
Pdf blast resistant structural designs are becoming essential because of the upsurge in. Sep 03, 2011 reinforced concrete sk 33 section through slab showing stress due to moment. Slab cantilever reinforcement design spreadsheet download link more from my sitevoided twoway slab design based on aci 31814 spreadsheetconcrete toggle navigation about us. Bending will take place in the two directions in a dishlike fo. The minimum spacing of reinforcing bars should preferably be 6 in. Floor slabs can range from a simple residential basement slab to a heavyduty industrial floor. Design of reinforced concrete structures ii twoway slabs 1 1. Total moment in slabs supported on circular column capitals 0 moments at design sections of slabs supported on. Notes author staff bridgesight software sponsor bridgesight software. A copy of the tables is provided in the appendix and also.