Pile Design for Structural and Geotechnical Engineers by Ruwan Rajapakse
By Ruwan Rajapakse
All gadgets and buildings move their load both without delay or ultimately to the earth. The ability of the earth to aid such lots relies on the power and balance of the helping soil or rock fabrics. Pile foundations are the a part of a constitution used to hold and move the weight of the constitution to the bearing flooring situated at a few intensity less than floor floor. there are numerous texts on pile foundations. commonly, those books are complex and tough to appreciate. effortless to take advantage of and comprehend, this e-book covers nearly each topic bearing on pile layout, that includes suggestions that don't look in different books at the topic. The ebook includes layout equipment with genuine lifestyles examples on pin piles, bater piles, concrete piles, metal piles, trees piles, auger forged piles, underpinning layout, seismic pile layout, unfavourable dermis friction and layout of Bitumen lined piles for unfavourable epidermis friction and plenty of different matters. The booklet is full of layout examples, case experiences and after development situations are awarded for the reader's merits. This publication allows the reader to return away with a whole and finished knowing of the problems relating to the layout, install and building of piles. * convenient advisor for engineers perparing the pro engineer (PE) examination. * Nomrous layout examples for sandy soils, clayey soils, seismic loadings * Methodologies and case experiences for various pile kinds
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4 Precast Concrete Piles Precast concrete piles can be either reinforced concrete piles or prestressed concrete piles. 2 Prestressed Concrete Piles Pre-tensioning Procedure Reinforcement cables are pulled and attached to metal supports. Concrete pile is cast around. 19 After the concrete is set, supports are cut off. Pre-tensioning procedure Post-tensioning Procedure Concrete pile is cast and allowed to set. Hollow tubes are inserted prior to concreting. Cables are inserted through hollow tubes and pulled.
The soil is removed and the timber pile is installed (Figs. 32a, b, c). • Concreting is done while the casing is lifted (Figs. 32d, e). • The timber pile is installed below the groundwater level. 9 Fiber-Reinforced Plastic Piles (FRP Piles) • Fiber-reinforced plastic (FRP) piles are becoming increasingly popular because of their special properties. • Timber piles deteriorate over time and are also vulnerable to marine borer attack. Plastic piles are not vulnerable to marine borer attack. • Corrosion is a major problem for steel piles.
9 Splicing of H-piles 22 Pile Design and Construction Rules of Thumb • Step 1: The sleeve is inserted into the bottom part of the H-pile as shown and bolted to the web. • Step 2: The top part of the pile is inserted into the sleeve and bolted. Guidelines for Splicing (International Building Code) IBC states that splices shall develop not less than 50% of the pile bending capacity. If the splice is occurring in the upper 10 ft of the pile, eccentricity of 3 in. should be assumed for the column load.