asce's vision is to position engineers as global leaders, building a better quality of life. the pittsburgh section of asce has nearly 1600 members and represents engineering and construction interests for communities throughout western pennsylvania.
life cycle assessment (lca) is a widely used methodology for quantifying environmental impacts associated with the life cycle stages of a system. lca utilizes inventory of energy and materials to calculate the emissions from the life cycle stages and characterize the emissions into environmental impacts. lca is applicable to complex systems like geo-structures, but its application in geotechnical engineering has been lacking because it is not mandatory in current practice. given that geotechnical constructions involve land transformations through earthworks and construction of large-scale concrete and/or steel structures (e.g., bridge abutments, retaining structures, and tunnels), geotechnical engineering can play a vital role in sustainable development by ensuring that the resources are consumed responsibly with minimal emissions to the environment. lca can help designers determine the most environment-friendly option among design alternatives. it can also help in optimizing designs by varying the parameters that affect the environmental impacts or emissions of interest. in this paper, the process of performing lca is described with drilled shaft foundations as examples. sample calculations related to the quantification part of lca are provided, and sample results are interpreted to demonstrate the usefulness of information obtained from lca.
progress in marine construction is mainly dependent on innovation. those working in marine construction must be up to date with innovative methods that improve productivity, resilience, and sustainability. drilled caissons and helical
iowa state university department of civil, construction and environmental engineering website
the construction of buildings and infrastructure on marine deposits is challenging. the impact of the horizontal behavior of structures on reclaimed areas is critical. this study investigated the behavior of laterally loaded drilled shafts in marine deposits through a comprehensive analysis and full-scale lateral load test conducted in songdo, south korea. it identified various critical pile characteristics for designing and constructing architectural and civil structures in marine environments, focusing on a 2.5 m diameter, 40 m long drilled shaft. at a 900 kn design load, the test pile experienced a maximum moment of 3520.2 kn·m and a lateral deflection of 2.32 mm, with anticipated failure at a load of 1710 kn and 11.30 mm displacement. fiber bragg grating (fbg) sensors enabled precise displacement and strain measurements, essential for constructing accurate load–displacement curves and understanding lateral load responses. inverse analysis with validated data from a commercial software (lpile) showed good alignment of maximum moment and displacement but highlighted challenges at failure loads. the study developed depth-dependent p-y curves for marine deposits, crucial for predicting soil–pile interaction and optimizing shaft design. practical implications include using derived p-y curves and an empirical equation using standard penetration test (spt) results to predict the coefficient of horizontal subgrade reaction (kh) with high accuracy. overall, this research emphasizes the importance of advanced instrumentation and analytical techniques for optimizing drilled shaft design and ensuring structural stability in challenging marine geological conditions.
our experts help determine your project’s best deep foundation type based on soil and load magnitude, and provide expert installation services.
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this article by ryan j. hardesty, p.e., of hardesty consulting llc discusses helical piers vs drilled concrete piers in highly expansive soil areas. we found it interesting and wanted to share. it is well known along the front range of colorado that extensive structural damage to lightly loaded structures can occur in areas underlain by […]
drilled shaft advancing the state of the practice or state of the art in design, construction, and quality verification of drilled shaft foundation systems. message committee ➤ committee roster ➤ join the committee ➤ initiatives news & events fundamentals related links committee chair david graham, p.e., bc.ge dan brown and associates pc dgraham@dba.world david graham, […]
with larger buildings come deeper and larger foundations. drilled caissons or “piers” are one of the most commonly used foundation types for the most heavily loaded buildings as well as most bridges and overpasses. in order to be confident that each pier will support a building as designed, in-depth inspections must be performed. these inspections
a drilled pier is a deep foundation system that uses a large diameter concrete cylinder constructed by placing fresh concrete and reinforcing steel into a drilled shaft. it is also called as a cais…
explore the differences between drilled shafts and driven piles, and find the best foundation solution for your project.
view the complete article here. marine drilled shafts and anchors provide the critical support needed for structures like offshore platforms and undersea tunnels, standing firm against the relentless push and pull of the sea and other marine environments. this guide explores the techniques and innovations that enable these foundations to secure some of the most…
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should you build with a pier and beam foundation?
reading time: 7 minutes what is drilled-shaft concrete testing? drilled shafts, also known as bored piles or caissons, are a type of foundation element used in civil engineering and construction. they are commonly used to support structures like bridges, buildings, and other heavy infrastructure.…
learn more about concrete foundation cost savings: slab on grade foundation with imported soils vs. drilled pier foundation - evstudio .
a key step in bored pile/drilled shaft construction is the cleaning and inspection of the bottom of the hole prior to the placement of reinforcement and concrete. once drilling is complete, any material unsuitable for end bearing support is removed. bottom inspection is then performed, often by lowering a camera down the bore hole, a procedure that gives a rough idea of the thickness of any debris left at the bottom. the squid (shaft quantitative inspection device) is the latest addition to pile dynamics extensive . . .
all - i would be grateful if you could point me in the direction of some paper, text or other collection of material that presents a dicussion on the...
learn the best practices for designing sustainable and environmentally friendly drilled shafts, a common type of deep foundation for civil engineering projects.
sme tackles the toughest geotechnical, environmental, building materials, pavements and construction testing and engineering challenges – and we consistently deliver exceptional results.
in this comprehensive guide, we will delve into the different types of foundation piers!
as part of the city of philadelphia’s waterfront improvement plan, the schuylkill river development corporation (srdc) brought on urban engineers to conduct bartram’s fishing pier feasibility study and final design.
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longfellow drilling is one of the largest full service drilling contractors in the united states. our operations team, safety team, and project leadership provide a unique blend of foundation construction, geotechnical engineering, and design engineering services that offer clients advanced solutions for the most challenging projects. longfellow drilling has many years of experience completing […]
reducing the carbon footprint of renewable energy projects continuous, improved performance doesn’t happen by accident. it takes a focused, intentional effort to achieve results. terracon’s foundation practice, serving the u.s. power generation market has made ...
michels construction, inc's capabilities include deep foundations, marine work, dredging, dewatering, infrastructure, and industrial solutions.
apprenez les risques des fondations en béton faites soi-même. restez informé, évitez les erreurs coûteuses et assurez une fondation solide et sécurisée pour votre projet.
compacted aggregate pier & compacted soil column | farrell design-build - go vertical with confidence® - geotechnical contractor since 1999 in california and west coast delivers rap cap compacted aggregate pier, drill displacement column, auger cast pile, drilled displacement pile, rapid impact compaction, micro piles and more.
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kiewit’s deep foundation work includes drilled shafts, micropiles, auger cast piles and driven piles. we have the knowledge, experience and equipment that is required for this specialized work and we can offer cost-effective solutions for any type of project.
view the complete article here. the significance of foundations goes beyond merely supporting the load above—they ensure structures remain steadfast amidst varying environmental conditions, ensuring the safety and longevity of the buildings we live and work in. there are primarily two types of foundations that are predominantly used in construction: shallow and deep foundations. each…shallow versus deep foundations: factors to consider, common mistakes and pitfalls, and more - pile buck magazine
discover how helical piers offer unparalleled foundation support and concrete leveling solutions, enhancing structural stability and sustainability in commercial construction.
drilled piers, also known as drilled shafts, offer robust foundation solutions for heavy structures, but like all construction methods, they can have environmental impacts. understanding and addressing these impacts is crucial to ensure that projects are both eco-friendly and compliant with regulatory standards. this article explores the potential environmental impacts…