Pile group design example pdf

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. 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. Observed efficiencies of square pile groups in sand. Pile group carries a vertical load of 5000 kn including the weight of the pile cap. The calculation checks the design of pile caps supporting a single column with. In this manual, a pile foundation will be broadly described as one in which. H pressure distribution and divide the layer into two equal layers. Fm 54 chapter 7 distribution of loadson pile groups section i. Examples of pile capacity computations are presented in appendix d. Piles are 80 cm in diameter and spaced at 2m center to center in either direction. Analysis and design of pile groups 29 1 the ratio of load on pile to the average pile load in the group p p av, and is plotted against the normalised pile spacing sd. Pdf analysis and design of pile groups researchgate.

However, this manual is intended to provide examples and procedures of proven. Design and construction of driven pile foundations volume i fhwa. European commission joint research centre institute for the protection and security of the citizen contact information address. This video demonstrates the tekla tedds rc pile cap design calculation to the eurocode. Pile design and construction practice, fifth edition civil engineering.

Structure of the guide introduction to pile foundations pile foundation design load on piles. The pile cap should normally be rigid so as to distribute the forces equally on. A comparison of the capabilities of each program is. Piles are used to transfer the load beyond the zone of possible moisture changes in collapsible soils. There are eleven design examples, which are arranged in three tracks as listed in the table below. The load carried by an individual pile or group of piles in a foundation depends upon. Pile supported foundation pile cap analysis and design based on a geotechnical study, a pile supported foundation is required to support a heavily loaded building column.

Structural design of reinforced concrete pile caps the strutandtie method extended with the stringerpanel method december 2006 a. 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. Design the pile cap shown in the following figure with 12 in. Example 2 timber piles, 25 log with 10 point diameter, were driven through a silty sand with. 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. Comprehensive design examples are presented in publication. For example, pile foundations are often required when. Design limits prevent it to deliver as much energy as single acting, but greater speed, used mostly for sheet piles. This design example presents the procedures to calculate pile. A brief outline is given of the basis of analysis used in two computer programs, piglet and defpig, for analysis of pile group response.