Episodi

  • Steel-Framed Open-Deck Parking Structures

    Steel-Framed Open-Deck Parking Structures
    Jan 22 2026
    A comprehensive framework for the engineering and assembly of steel-framed, open-deck parking structures. The document outlines essential structural components, comparing various concrete deck systems and their compatibility with steel frames to optimize durability and cost-effectiveness. It details critical design considerations such as fire protection, corrosion resistance, and compliance with building codes and ADA accessibility standards. Furthermore, the text offers technical guidance on high-performance coatings, including painting and galvanizing, to mitigate environmental damage from salt and moisture. Practical appendices provide design examples and maintenance checklists to assist engineers in ensuring the long-term integrity of these facilities. This resource serves as a vital manual for balancing architectural aesthetics with rigorous structural performance requirements.

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    15 min
  • High Strength Bolts: A Primer for Structural Engineers

    High Strength Bolts: A Primer for Structural Engineers
    Jan 21 2026
    A technical manual for structural engineers regarding the selection, installation, and design of high-strength bolts and historical rivets. It differentiates between common bolts (A307) and high-strength varieties (A325 and A490), detailing their mechanical behavior under tension, shear, and combined loading. The text emphasizes modern installation techniques such as the turn-of-nut and calibrated wrench methods, alongside specialized hardware like tension-control bolts and direct tension indicators. Engineers are provided with specific criteria for managing slip-critical and bearing-type joints, as well as complex structural phenomena like prying action, shear lag, and fatigue. Furthermore, the document outlines essential inspection protocols and maintenance considerations, including the reuse of fasteners and the impact of various hole types on connection integrity.

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    14 min
  • Corrosion of Steel in Concrete: Prevention, Diagnosis, Repair

    Corrosion of Steel in Concrete: Prevention, Diagnosis, Repair
    Jan 20 2026
    Provides an extensive, systematic guide for engineers to understand and combat the deterioration of reinforced concrete structures, particularly due to rebar corrosion. The content covers the fundamentals of concrete composition and its protective alkalinity, contrasting this with the reality that structures are not "eternal" because of corrosion initiation caused by carbonation and chloride penetration. Much of the text discusses the mechanisms and kinetics of corrosion, detailing the roles of water, porosity, and transport processes like diffusion and migration, and explores various preventative measures including quality control, special cements, corrosion-resistant rebar, and surface treatments. Finally, the source addresses inspection and condition assessment techniques, such as potential mapping and corrosion rate measurement, and outlines repair and rehabilitation strategies using conventional patching, as well as advanced electrochemical methods like cathodic protection and chloride extraction.

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    18 min
  • Corrosion of Steel in Concrete: Understanding, investigation and repair

    Corrosion of Steel in Concrete: Understanding, investigation and repair
    Jan 19 2026
    Detailing the corrosion of steel in concrete, specifically focusing on the causes, mechanisms, investigation, and repair of this major infrastructure problem. The sources emphasize the economic and safety implications of concrete deterioration and introduce various evaluation and monitoring techniques used by civil engineers, such as reference electrode surveys and linear polarization resistance measurements. A significant portion of the material is dedicated to rehabilitation methodologies, discussing conventional physical repairs like patching and overlays, as well as advanced electrochemical treatments including cathodic protection, chloride extraction, and realkalization. Finally, the text explores different design strategies for durability in new construction, evaluating options like epoxy-coated reinforcement and corrosion inhibitors to mitigate future corrosion issues.

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    18 min
  • Concrete Pavement Repair Manuals of Practice

    Concrete Pavement Repair Manuals of Practice
    Jan 18 2026
    Comprehensive manuals of practice for maintaining and repairing concrete pavements, addressing two distinct types of necessary maintenance. The first manual focuses on the intricate procedures, materials, and equipment required for the repair of joint seals in concrete pavements, including detailed steps for joint preparation, sealant installation, and cost-effectiveness analysis. The second manual concentrates on the necessary planning, materials, and construction techniques for the rapid repair of partial-depth spalls, outlining various patch preparation methods, material selection, and quality control measures. Both texts emphasize the importance of correct procedures, safety, and proper material selection to ensure the long-term performance of highway repairs, providing extensive checklists, tables, and cost-estimating worksheets.

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    17 min
  • Concrete Pavement Design, Construction, and Performance

    Concrete Pavement Design, Construction, and Performance
    Jan 17 2026
    A technical book focused on concrete pavement design, construction, and performance, likely authored by Norbert Delatte. These sections comprehensively cover the history and evolution of concrete pavements, including early road tests like the Bates Road Test, and discuss the various types of concrete pavements such as jointed plain, continuously reinforced, and roller-compacted concrete. A major focus is on complex engineering principles, detailing design methods like the AASHTO and PCA procedures, and the crucial considerations of subgrades, subbases, and drainage in determining pavement stability and thickness. Furthermore, the text thoroughly examines material selection, mixture design, and construction practices, addressing topics like aggregate quality, the use of admixtures, accelerated construction techniques, and methods for both rehabilitation and overlay of existing concrete roads and airfields.

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    14 min
  • Concrete Pipe for the New Millennium

    Concrete Pipe for the New Millennium
    Jan 16 2026
    Focused on the design, installation, and material innovation of concrete pipe and culverts, particularly within aggressive environments and modern infrastructure projects. Several papers discuss mitigating microbial induced corrosion (MIC) in sewer systems through material advancements like sulfur concrete, acid-resistant cements, and antimicrobial additives, detailing successful laboratory and field tests. Other sources concentrate on evolving structural design standards for buried concrete pipe, highlighting the implementation and verification of the Standard Installation Direct Design (SIDD) methodology and comparing it with older design approaches. Finally, the texts analyze and contrast the AASHTO Standard and Load and Resistance Factor Design (LRFD) codes for concrete box culverts, and introduce the concept of an Intelligent Technology System (ITCS) for optimizing pipeline project cycles through comprehensive data management.

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    16 min
  • Steel Design Guide: AISC Rehabilitation and Retrofit Guide [A Reference for Historic Shapes and Specifications]

    Steel Design Guide: AISC Rehabilitation and Retrofit Guide [A Reference for Historic Shapes and Specifications]
    Jan 15 2026
    A comprehensive design guide, provides technical specifications and historical context for the rehabilitation and retrofit of existing steel structures. A major component is a detailed historical summary of ASTM specifications for structural steel shapes and plates, dating from 1900 to 2000, which details changes in material, yield point, and tensile strength over time. The document also addresses structural enhancement techniques for gravity and lateral systems, including methods for reinforcing columns and floors, and extensively covers seismic rehabilitation strategies for moment connections, often referencing Federal Emergency Management Agency (FEMA) guidelines. Finally, the text includes historical AISC allowable stresses for bolts and numerous tables detailing torsion properties for various steel sections used between 1887 and 1952.

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    14 min