Civil Engineering Made Simple episodes:

• January 20, 2026Corrosion of Steel in Concrete: Prevention, Diagnosis, Repair

  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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• January 19, 2026Corrosion of Steel in Concrete: Understanding, investigation and repair

  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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• January 18, 2026Concrete Pavement Repair Manuals of Practice

  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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• January 17, 2026Concrete Pavement Design, Construction, and Performance

  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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• January 16, 2026Concrete Pipe for the New Millennium

  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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• January 15, 2026Steel Design Guide: AISC Rehabilitation and Retrofit Guide [A Reference for Historic Shapes and Specifications]

  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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• January 14, 2026Steel Design Guide: Staggered Truss Framing Systems

  A comprehensive resource for structural engineers on designing buildings utilizing the staggered-truss system, particularly for mid-rise residential and hospitality structures. The source details the advantages of staggered trusses, including their efficiency for lateral load resistance and reduced floor-to-floor height, and provides a thorough design methodology encompassing diaphragm action, gravity and lateral load calculations, and the specific design of truss members and connections. Furthermore, it incorporates chapters on seismic design requirements, specialized topics like openings and erection, and fire protection considerations for this steel framing system.
  
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• January 13, 2026Steel Design Guide: Flush and Extended Multiple-Row Moment End-Plate Connections

  Provides detailed design procedures, equations, and limitations for various connection configurations, largely based on extensive research utilizing yield-line theory and the modified Kennedy method for predicting bolt forces, which includes the effect of prying action. The guide discusses the use of these bolted connections in rigid frame construction, particularly in the metal building industry, and includes limit state checks and considerations for both Load and Resistance Factor Design (LRFD) and Allowable Stress Design (ASD). Furthermore, it addresses specific design procedures for gable frame panel zones and the performance of these connections under seismic and cyclic loading.
  
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• January 12, 2026Steel Design Guide: Industrial Buildings Roofs to Anchor Rods

  Focuses on the structural engineering of industrial buildings without and with cranes. The document provides detailed technical information, including design considerations for elements like roof and wall systems, framing schemes, and column anchorage. A significant portion of the guide is dedicated to specific design criteria, such as loading conditions, serviceability criteria, and methods for handling crane-induced loads and fatigue provisions. Ultimately, it serves as a technical reference for professionals involved in the planning and construction of these complex steel structures.
  
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• January 11, 2026Steel Design Guide :Stiffening of Wide-Flange Columns at Moment Connections [Wind and Seismic Applications]

  Focuses on the structural engineering and design calculations necessary for stiffening wide-flange columns when they are used in moment connections, especially when subjected to wind and seismic forces. The guide details various limit states for local column strength—such as local flange bending, web yielding, web crippling, and web compression buckling—and provides equations and design aids to calculate required strengths and design adequate stiffening elements, including transverse stiffeners and web doubler plates. Additionally, the document addresses economical considerations for column selection and stiffening requirements in both low-seismic and high-seismic applications, often referring to the AISC Load and Resistance Factor Design (LRFD) specifications.
  
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