The above design assumptions and recommendations are considered as guidelines in considering pile cap as your choice of foundation. Bridge pile bent georgia department of transportation. The column or wall on pile cap should be centered at the geometric center of the pile cap in order to transferred load evenly to each pile. Raft is the same structure to a pile cap and it is a concrete foundation floor supported with soft soil that is accountable for subsidence. Pca predicted that the considered pile cap collapsed because of. This design example is for end bearing piles that are driven through cohesive soil and tipped out in rock. It is common to allow for an amount of corrosion in design by simply over dimensioning the crosssectional area of the steel pile. Masterseries pile cap design using strut and tie methodology. Any configuration of up to 200 piles may be analyzed for both axial and biaxial bending moments. It was chosen since it is one of only two caps that are uniquely detailed for round columns rather than equivalent square columns. Analyze any pile arrangement and design the pile cap accordingly, including cap thickness, steel requirements, and rebar spacing. The design of these pile caps will be per standard closed form design procedures. Analysis of the problem yields deflections, rotations, moments, shears, and soil reactions as required for structural design.
Appendix b columntopile cap connections appendix c piletopile cap connections this design guide has been developed to provide the practicing engineer with a detailed overview of pile cap design, detailing, and analysis methodologies that represent the current state of practice in the industry. Pile design and construction practice, fifth edition. Appendix b columnto pile cap connections appendix c pile to pile cap connections this design guide has been developed to provide the practicing engineer with a detailed overview of pile cap design, detailing, and analysis methodologies that represent the current state of practice in the industry. Sachpazis date 100820 chkd by date appd by date rc pile cap design bs8110. Instructional materials complementing fema p751, design examples. A similar structure to a pile cap is a raft, which is a concrete foundation floor resting directly onto soft soil which may be liable to subsidence. A strutandtie model adapted to the design and analysis of pile caps has been developed in this project. Pile cap design provides advanced analysis, design, detailing and scheduling of pile caps, with up to 9 piles supporting circular or rectangular columns. Download pile cap designing excel excelsheet for pile cap. The ultimate pile capacity70 kippile and service load capacity42 kippile as conformed by testing. The program computes deflection, bending moment, shear force and soil response. The software offers a range of pile cap group solutions for the input loads. Structure of the guide introduction to pile foundations pile foundation design load on piles.
Example 1 design of cantilevered wall, granular soil introduction. Sep 08, 20 pilecap design is a spreadsheet for the design and detailing of reinforced concrete pilecaps. The pile cap should normally be rigid so as to distribute the forces equally on. Pile foundations are the part of a structure used to carry and transfer the load of the structure to the bearing ground located at some depth below ground surface. Design examples there are five readytouse example files to familiarize you with this software including examples of tension, compression, tieback, soil screw, and end bearing and friction applications. Nov 14, 2017 limit state method i suggest you to listen to the video lecture and make notes of your own, that makes you confident if you still want to download it, its not free please click the below link. Pile cap design calculation civil engineering community. The calculation checks the design of pile caps supporting a single column with up to 9 piles. Kindly bear in mind that at the end of the day, it is always the structural engineers decision and judgment will still follow depending on your guts and prerogative, but at least the above basic knowledge can help you dig in and explore pile cap designing. Pile cap design software structural engineering general. Instructional materials complementing fema p751, design examples pilepier foundations view of cap with column above and piles below foundation design 29 passive resistance see figure 4. May 31, 2019 pile cap design for piles according to aci 31808 spreadsheet. Cads rc pile cap designer automatically produces a selection of suitable designs to bs 8110 and ec2 for pile caps with 29 piles supporting circular or rectangular columns.
Jul 20, 2018 the above design assumptions and recommendations are considered as guidelines in considering pile cap as your choice of foundation. Caps for two, three, four, five and six pile groups are catered for standard reinforcement detail drawings can be printed and bar scheduling to bs 8666. Pile cap design excel sheet it usually forms part of the foundation of a building, typically a multistory building, structure or support base for heavy equipment. Aug 18, 2015 design of pile cap as per is 2911 part i sec 3 2010, the pile cap may be designed by assuming that the load from column is dispersed at 45 from the top of the cap up to the mid depth of the pile cap from the base of the column or pedestal. As per is 2911 part i sec 3 2010, the pile cap may be designed by assuming. There is a scarcity of published information available in the subject area of pile cap lateral resistance. How to design pile caps in safe the structural world. Instructional materials complementing fema p751, design examples pile pier foundations view of cap with column above and piles below foundation design 29 passive resistance see figure 4. The purpose of this program is to allow gdot microstation users to create and revise pile bent input files. Design guide for pile caps crsi resource materials. Masterseries pile cap design software structural design. Pile cap design for piles according to aci 31808 spreadsheet.
Thus, designs are based on the procedure for slender footings that can be divided into three separate steps. Our pile cap analysis programs for structural engineering provide a useful tool for firms across the country. Pdf pile cap design guide pile cap design guide ferdinand. Save as the safe f2k file generated as previously created to begin the modeling. This technical guidance note concerns the design of pilecaps for small groups of piles e. A pile cap is defined as a concrete block cast on the head of a group of piles, to transmit the load from the structure to the group of piles. A pile cap have to support a 18x18 column which is subjected to live load170 kips and dead load160 kips under service loading. This design example presents the procedures to calculate pile. Reinforced pile cap design, in accordance with bs8110. The column is reinforced with longitudinal bars of 12 no. Pile under pile cap should be layout symmetrically in both directions. A sheet pile wall is required to support a 12 excavation.
Design of pile cap free download as powerpoint presentation. The ultimate pile capacity70 kip pile and service load capacity42 kip pile as conformed by testing. It relies on the strut and tie method to determine the amount of reinforcement required in the pilecap. The cast concrete pile cap distributes the load of the building into the piles.
Lateral load capacity of piles transportation research board. The axial loads on the column are due to dead and live loads and. Some freefall hammers, for example, the menck mhf series and the bsp cx series. Pdf comparison of moments for pilecap design researchgate. Pilecap design is a spreadsheet for the design and detailing of reinforced concrete pilecaps. Bored pile and pile cap design free download as powerpoint presentation. Strutandtie modelling of reinforced concrete pile caps chalmers. Lpile is a specialpurpose and internationally recognized computer program based on rational procedures for analyzing a pile under lateral loading using the py method. Please note this value is applied only for passive pressure.
Complete with functions that are easy to learn, and easily implemented capabilities, our pile cap design software programs allow for the creation of easily understandable and professional. Used in conjunction with building design suite, masterkey. Compression steel calculation and shear on 3pile cap corrected. The latter source is usually the only reliable one. The pile cap has normalweight concrete with a compressive strength of 4000 psi and grade 60 reinforcement. The load of the building is transmitted by the cast concrete pile cap into the piles. Find, read and cite all the research you need on researchgate. Once calculation the bending moment the pile cap depth can be determined as. Pile supported foundation pile cap analysis and design. An example project is used for program data throughout the document. This software is not a part of the ses or utility library bundle. It relies on the strut and tie method to determine the amount of reinforcement required in the pile cap.
Unfortunately, a structural designer is not always free in this choice. The main components of the foundation are the pile cap and the piles. Design the pile cap shown in the following figure with 12 in. Bored pile and pile cap design deep foundation truss. For pile cap design, two methods are commonly used.
A reinforced concrete slab or block which interconnects a group of piles and acts as a medium to transmit the load from wall or column to the piles is called a pile cap. This video demonstrates the tekla tedds rc pile cap design calculation to the eurocode. Design methods aci building code the aci building code aci318 does not contain any provisions specifically for deep pile caps. Our programs provide a valuable tool to engineering firms that can be easily incorporated into operations because they are quickly learned. However, if you have layouts that dont match you can create them as pile supported mat slab foundations which are analyzed based on an fem solution. Standard reinforcement detail drawings can be printed and bar scheduling to bs 8666. Download to your hard drive simply by clicking on each one.
In general, piles should be spacing at 3 times of pile diameter in order to transfer. The design moment and reaction for monolithic support should generally be taken as the greater of the elastic and redistributed values critical design moment usually at face of support. Pdf introduction a pile cap is a thick concrete slab supporting loads. Limit state method i suggest you to listen to the video lecture and make notes of your own, that makes you confident if you still want to download it, its not free please click the below link. This technical guidance note concerns the design of pile caps for small groups of piles e. Settle number of pile placement of pile cap and plane dimension pile cap elementary depth verify forces. After selection of a pile cap type, the program offers a range of reinforcement solutions with the optimum offered as default. Design of pile cap part 12 limit state method youtube. Pile cap modeling and design parameters assignment. By using the pile cap design software for structural engineer firms that we created, you can avoid all those problems before the structure is even built. Design example of pile cap for concentric loading civil. Structural design of reinforced concrete pile caps. Mar, 2019 this video demonstrates the tekla tedds rc pile cap design calculation to the eurocode.
Pile cap design analysis software programs for structural. Caps for two, three, four, five and six pile groups are catered for. This program is for microstation v8 and newer data. This chapter covers the pile bent application for bridge design. Modeling of pile cap in safe is then ready once you completed the designation of which types of pile cap to use in your foundation design. The pile cap design procedures in this trm have been prepared in accordance with. Essentially, it has a library of predefined pile caps based on the layouts from the crsi manual on pile caps. Grade of concrete m 30 grade of steel fe 500 size of column 680 x 300 mm axial force 1560 kn moment mx 339 knm moment mz 0. Piles are long and slender members which transfer the. Jul 15, 2017 pile cap design excel sheet it usually forms part of the foundation of a building, typically a multistory building, structure or support base for heavy equipment. To take into account the friction between the wall and the soil, we use friction angle.
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