The design of composite slabs and beams is discussed in detail in relation to the eurocodes and bs 5950. Reinforced concrete slab design using the empirical method. This spreadsheet program provides for the design and analysis of posttensioned concrete oneway beam and slab systems and twoway flat plate slab systems. A finite element model may be created to analyse a complicated loading arrangement. 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. 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. Aashto lrfd has since become the design standard and uses impact loads significantly larger than those in asd. Design example of a posttensioned composite bridge girder. Design a thickened slab to support the columns and. Reinforced concrete design s u r a n a r e e institute of engineering. Here, we have tried to gather various reading materials available in the web about flat slab floor system in one place. A copy of the tables is provided in the appendix and also. Slab design reading assignment chapter 9 of text and, chapter of aci31802 introduction aci318 code provides two design procedures for slab systems.
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. Pdf design envelopes for cantilever slabs to resist blast loads. Reinforced concrete sk 33 section through slab showing stress due to moment. Ce 437537, fall 2002 slabongrade example design info 1 8 design the thickness for a slabongrade concrete slab in a warehouse. Using aashto lrfd bridge design specifications 4th ed. To provide a complete idea, the stress computation, the reinforcement. Posttensioned concrete design spreadsheet program a pdh. Design envelopes for cantilever slabs were developed using kingery and bulmashs 1984.
Department of mechanics, materials and structures english courses reinforced concrete structures code. Design the minimum slab thickness to support a fork lift specified below and storage racks specified below throughout. The composite slab which has to be placed on a conference hall has been selected for this project. Aug 28, 2016 cantilever slabs are a typical one way slabs.
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. Following are the rcc slab design and detailing guidelines. In this example, the calculating value of the effective depth d v is equal to the effective depth d minus the concrete cover c on the bottom surface of the slab. The construction and design of concrete slabs on grade d. The construction and design of concrete slabs on grade. Slabs and flat slabs lecture 5 19 th october 2016 contents lecture 5 designing for shear in slabs including punching shear detailing solid slabs flat slab design includes flexure worked example exercise punching shear. Analysis and design of slabs, one way slabs, online free slab design, design of slabs one way, free slab design online, design procedure for one way slab. Notes author staff bridgesight software sponsor bridgesight software. Bridge approach slab analysis and design incorporating elastic soil support presented by. Design oneway slab as shown below to carry the live load 500kgm 2 f c 210 kgcm 2, f. Design an interior panel of a flat slab of size 5 m. Bending will take place in the two directions in a dishlike form.
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. Pdf blast resistant structural designs are becoming essential because of the upsurge in. Flat slab analysis and design pdf flat slab design pdf 1. Sep 03, 2011 reinforced concrete sk 33 section through slab showing stress due to moment. Bss090119991 abstract this design example illustrates the empirical design method for composite concrete bridge decks specified in article 9. Find the following parameters for design moments in step 2 per unit width step 4 note. Structural calculations for posttensioned beam and one.
Analysis and design of cantilever slab beam structure. All slab reinforcement should be anchored property at discontinuous edges. Title reinforced concrete slab design using the empirical method publication no. Analysis and design of cantilever slab d47ex7jzmjn2 idocpub. Flat plate concrete floor system does not use beams between columns or. The trial depth is selected based on spandepth ratio of 7, as in is. If adjacent spans are not equal, the extension of the ve reinforcement beyond each face shall be based on the longer span. Structural steel composite slab 1 of 7 rev design project. Same as the distribution steel analysis and design of slabs. Integral abutments are used to eliminate expansion joints at the end of a bridge. 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.
Example design a cantilever projecting out from a room slab extending 1. The lrfd impact loads result in a rail anchor slab that is much larger than what has proven. Tn342 design example 2way mondada 093090 adapt corporation. Approved plans were obtained and analyzed with emphasis on detailing.
Element designs with notes and discussions have added to get comprehensive knowledge. Floor slabs can range from a simple residential basement slab to a heavyduty industrial floor. Concrete deck slabs can be constructed with castinplace or precast methods, and typically include mild steel reinforcement in the longitudinal and transverse directions. Design strap as flexural member for the shear and moment obtained above. Ce 416 prestressed concrete sessional lab manual department of civil engineering ahsanullah university of science and. Design of reinforced concrete structures ii twoway slabs. Master of science and hereby certify that, in their opinion, it is worthy of acceptance. The design procedure set forth in that publication had at that time been in use by the author for about 15 years. Sachpazis date 18012014 chkd by date appd by 1 flat slab design to bs8110. 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. Ce 437537, fall 2002 slabongrade example design info 1 8. Structural design of cantilever slabs solved example.
The cross section of the profiled sheeting is shown in fig. Analysis and design of cantilever slab free download as word doc. The file extension pdf and ranks to the documents category. Post tension design of slab there is document post tension design of slab available here for reading and downloading. Design of cantilever slab spreadsheet engineering books. The program is divided into three separate screens, which correspond to the three major areas of concern in the design of a posttensioned member. Longitudinal steel should be detailed in a 2bar alternating pattern, with one of the bars continuous through the slab. Reinforced concrete slab design and detailing guidelines for depth of slab, loads on slab, reinforcement guide for oneway and twoway slabs as per is 456. Assume partitions cannot be damaged by deflections. 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. Purpose of building residential f ck 25 mpa f yk 460 mpa concrete cover 25 mm height of block wall 2. Concrete pool design spreadsheet based on aci 31814. Comprehensive design example for prestressed concrete psc girder superstructure bridge design step 7 design of substructure design step 7.
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. 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. Pdf files in the structure component plans for each bridge number. If you need to print pages from this book, we recommend downloading it as a pdf. Moment division example 6000 6000 6000 6000 6000 5000 layout of building 7000. Only the design of slab bridge will be used for illustration. Comprehensive design example for prestressed concrete psc. Design example on composite steel deck floor slabs by thomas j. The decking should not cantilever beyond a support more than 600 mm or. Structural loads, structural analysis and structural design are simply explained with the worked example for easiness of understanding. Structural consideration in design of reinforced concrete.
Design compressive normal force in the concrete flange. Department of mechanics, materials and structures english. Solved example a cantilever slab 200 mm thick is 1. A civil engineer should study these lectures and materials for structural engineering acumen. Generally, reinforced concrete deck slabs are the most often used type of deck for steel bridges. The new teaching format allows instructors to incorporate additional. Structural modeling and analysis of concrete floor slabs. Rail anchor slab design rail anchor slabs have been used with good performance under allowable strength design asd practices. F is the total design ultimate load on the strip of slab between adjacent columns considered 1.
An example would be a case in which a large portion of the. This article discusses the similarities and differences between traditional frame methods and finite element methods for the design of floor slab systems. The beams have four tendons, two with five strands and the remainder with three strands each. 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. Example analysis using data from the portland cement association engineering bulletin 232, aashto lrfd design of castinplace concrete bridges this example demonstrates how slab bridge designer 2. A typical example of the decking layout for a composite floor is shown in. Design of strap or cantilever footings falmatasaba. Pdf shear capacity of reinforced concrete slabs under. Oneway and twoway slabs oneway slabs transfer the imposed. Oneway slab design of oneway slabs is like design of parallel 1m beams. Asce, secb course content slab on grades construction. Introduction concrete slabs on grade are a very common type of concrete construction. Flat slab analysis, design and detailing pdf civil engineering.
Flat slab analysis, design and detailing pdf civil. Mccabe1 the enclosed example is presented to demonstrate the intent and use of the aisi tentative recommendations for the design of composite steel deck slabs, and hereafter will be referred to as the criteria. This document was uploaded by user and they confirmed that they have the. This problem is exacerbated by the introduction of posttensioning, especially when beamless floor systems flat slabs are used. Voided twoway slab design based on aci 31814 spreadsheet.
The problem is compounded when openings are made in existing slabs. Reinforced concrete slab design and detailing guide is456. Example on design of slab bridge design data and specifications superstructure consists of 10m slab, 36m box girder and 10m tgirder all simply supported. Control point heights shown indicate the distance of soffit from the center of gravity of strands cgs the profile of tendons in the slab is generally reversed parabola, with a cantilever down shape at both ends. This guide covers the design and construction of composite slabs and beams, and. For slabs spanning in both directions published tables and charts should be used to find bending moment and shear per unit width of slab. Unfortunately, this book cant be printed from the openbook. Total moment in slabs supported on circular column capitals 0 moments at design sections of slabs supported on. Heavy loads in building s such as warehouses include moving load s, stationary live loads, and wall loads.
The results of the study show that the slab can be successfully used for residential buildings as it meets all the requirements and demands fewer materials. The minimum spacing of reinforcing bars should preferably be 6 in. Design of reinforced concrete structures ii twoway slabs 1 1. 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. The slab is designed in category a see eurocode 2, part 2, table. The design shear force can be reduced to account for the loads applied inside the outer perimeter.
Design of slab for flexure 067 m unit width of slab. Bending will take place in the two directions in a dishlike fo. Lrfd castinplace cip slab span design example county. Sci p300, composite slabs and beams using steel decking. Analysis and design of slabs one way civil engineers pk. 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.