Max frank offer a punching shear reinforcement customised design program which automatically calculates the most costeffective design solution for individual site requirements to bs 8110 and ec2. Current recommendations in most design codes as american code aci318 and egyptian code ecp203 for punching. The critical section loaded in shear u cr is distant from the column edge by one half of the footing thickness. Punching shear design spreadsheet to bs 81101 this spreadsheet is still in testing phase. Sachpazis date 18012014 chkd by date appd by 2 characteristic strength of concrete. Punching shear perimeter bs 5400 part 4 the method of calculating the punching shear in the solid slab is given in the bs 5400 part 4 1990 and has a slight difference when compared with eurocode 2. Mc2010 is based on the critical shear crack theory proposed by muttoni, which relates shear resistance to the width of the socalled critical shear crack which depends on slab rotation. This easytouse program allows the optimum design to be determined and generates a printable calculation sheet, a dxf file and a parts list of the specified layout. Analysis and design of continuous slab and beam footing. Experimental investigation of punching shear failure. Punching shear % steel structural engineering general. Beam section slab section design bs 8110 1997 individual footing design bs 8110 1997 post tension analysis and design to ec2 by the concrete center. Max frank limited offers the following services and support for shearail in house design service, using a customised design program which.
Diaphragm design shear wall design design of counter fort retaining wall design of circular slab with hole counter fort retaining wall counterfort retaining wall analysis and designm crack width bs 8110 crack width calculation crane load calculation dam analysis based on is6512 1984 and usbr dead load calculation for rcc t girder deck design. Enter your mobile number or email address below and well send you a link to download the free kindle app. Design stress strain curve from bs 8110 british standard institution. Crack width calculation for bs 8110 bs 8007 by the concrete center. Bs 8110 details how deflections and the accompanying crack widths may be calculated. Beam design spreadsheet to bs 81101 this spreadsheet allows to quickly design single span reinforced concrete beams. Part 1 1985, eurocode 2 pren 199211 and aci 31802 on pad foundations, with particular emphasis on punching shear was. For structures, the lateral stability of which do not rely on.
This paper compares design provisions for punching shear at internal columns in the superseded british standard bs 8110, eurocode 2 ec2 and fib model code 2010 mc2010. Pdf punching shear analysis of reinforced concrete flat plates. Punching strength without shear reinforcement the punching shear strength of the concrete is not sufficient. Hbrc journal the shear transfer in twoway concrete slabs presence of an edge beam at the free end of the slab was. Some comparisons with the british code bs 8110 85 and the ceb fip model code 1990 are also made. Reinforced concrete retaining wall design to bs 8110. As 3600 commentary on punching shear asnzs aunz code. Punching of flat slabs supported on rectangular columns infoscience. Comparison of punching shear requirements in bs 8110, ec2.
Tests reported in the literature and some experiments by the authors provide the basis for this study. Structural engineers and uses the format of the green book manualfor bs 8110. Sharedesign strength for bs 8110 the design strength of material for different cases is tabulated in the bs 8110 part 01 table 2. Reinforced concrete design to bs8110 structural design 1 lesson 5 1 lesson 5. Reinforcement detailing manual to bs 8110 free download. Strainbased strength model for direct punching shear of. Punching shear calculation is performed by comparison of shear th them since the beginning of. Raft foundation design for a typical 2 storey house example bs8110.
This dissertation is meant to encourage and lead the way to further research in this field of study. The as3600 shear design method assumes torsion reinforcement, and shear studs cannot provide this, so the as3600 formulae cannot be used. Punching shear resistance of various slabcolumn connections is calculated and compared with the corresponding predictions of different design specifications such as. If you would like to receive this information, please enter your email address and we will subscribe you to our enews list. This part of bs 8110 gives recommendations for the structural use of concrete in buildings and structures. Design results of rc members subjected to bending, shear. Each code has specified the fixed coefficients for lateral and. Design rules have been presented9 for application of british standard bs 8110 to stud design for. For the calculation of punching load capacity, equation 7 is. The latter is based on the critical shear crack theory csct of muttoni which. The majority of design codes do not make difference between punching shear of reinforced concrete slabs and footings, using the same expressions in both cases. As per slab dimensions, only bottom slab having depth d2 is effective for resisting punching shear. The punching shear strength of flat slabcolumn connections calculated using the aci code was found to be.
Design for punching shear should allow for the effects of moment transfer at the columnslab junction. Pile cap design for piles according to aci 31808 spreadsheet download link. We strongly recommend the shear stud design is verified against an alternate standard, such as bs 8110 or bs en 1992, eurocode 2. Pdf punching shear in concrete reinforced flat slabs. Before designing a beam, first, we need to find the bending moments and shear forces of the beam section through an analysis. A total of four 4 reinforced concrete slabs designed based on bs 8110 with the tensile reinforcement was cast with 1 steel fibre only and the last slab was. In contrast, bs 8110 and eurocode 2 define the punching shear strength of the slab. Verification of spread footing for punching shear bs. It is loaded by the prescribed moments m x, m y and by the shear force v provided by. The comparison included design cases of rectangular beam sections subjected to combined loads of bending, shear and torsion, and punching shear at slabcolumn connections. Buy reinforcement detailing manual to bs 8110 by r. Bs 8110 part 01 is one of the most commonly used standards, and the method expressed in the code can be understood very easily compared guides given for the design of other elements. The american code is conservative compared to ec2 and bs 81101 for a beam with that depth.
Shearail prefabricated punching shear reinforcement system, which is bs 8110 and ec2 compliant, enables site work to be carried out far more effectively and efficiently than traditional loose links, making it ideal for complex project management. But for rectangular beams some simplified procedures may be used to. Pdf punching shear resistance of normal and high strength. Critical section for punching shear is at a distance of 1. Bs en 1992 eurocode 2 the design of punching shear. Punching shear in concrete reinforced flat slabs with steel fibers and shear reinforcement.
The program allows analysis to bs en 1992 eurocode 2. The ancon design program simplifies the specification and ordering of a shearfix system. Punching shear in pad foundations on rock techylib. Rcc2000 spreadsheets for concrete design to bs 8110 and ec2. Design of beams to bs 8110 free download as powerpoint. Pile cap design for piles according to aci 31808 spreadsheet. Holding down bolts design spreadsheet bs 59501, 81101 punching shear design spreadsheet bs 81101 shear walls design spreadsheet bs 81101 strip footing design spreadsheet bs 81101 sum rebar weights per bar diameter. Slabs and flat slabs lecture 5 19 th october 2016 contents lecture 5. To examine the validity of the ecp203, aci318, and bs 8110 codes provisions on punching shear, the results of 55 reinforced concrete flat slabs were analyzed and compared with the ultimate. Evaluation and enhancing the punching shear resistance of flat. Schematic form of continuous beam and slab foundation downloaded from. Punching shear strength of concrete flat plate slabs. As with the green book the scope of the manualcovers the majority of concrete building structures and has now been extended to cover slender columns and prestressed concrete. As per bs 8110, for calculating punching shear capacity we have to consider % tensile reinforcement.
This paper compares design provisions for punching shear at internal columns in the superseded british standard bs8110, eurocode 2 ec2 and fib model code 2010 mc2010. However, when the load safety factors are included in calculating the design loads, the values of the resulting design loads become different for each code, and in this case, the aci was found to require less reinforcement than the bs. It also allowed using the same formula for calculation of the shear strength in punching as for oneway shear. Specialists in punching shear reinforcement design manual to bs8110. As per the british code bs 8110, the ultimate shear strength of slabs without pre. This paper compares design provisions for punching shear at internal columns in the superseded british standard bs8110, eurocode 2 ec2 and fib model code. Some comparisons with the british code bs 811085 and the ceb fip model code 1990 are also made. Design manual to bs8110 bs8110 general detailing rules.
The concrete centre regularly contacts registered users with email newsletters, event invitations and updates on new guidance. Footing thickness is adequate for resisting punching shear once vu vc. Manual for the design of reinforced concrete building. Punching shear analysis of reinforced concrete flat plates. Moment, shear, code dependant deflection span over effective depth, tension. Punching strength with shear reinforcement firstly, one has to check if the design shear. The critical section of direct shear is at one effective depth from the face of column. In addition, the study included comparison of the differences in the amount of reinforcement required owing to different codes factors of safety for design loads. Punching shear always a critical consideration in flat plate design around the columns instead of using thicker section, shear reinforcement in the form of shear heads, shear studs or stirrup cages may be embedded in the slab to enhance shear capacity at the edges of walls and columns. Strength of reinforced concrete pile caps wrap warwick. Civil engineering spreadsheet collection 2018 update.