Standards – serie

This single-volume set of three Standards establishes guidelines for design, installation, and operation and maintenance of urban subsurface drainage systems. ANSI/ASCE/EWRI 12-13 provides guidelines for the design of these systems and covers site analysis, system configuration, drain envelopes, hydraulics and hydrology, structural considerations, and materials. ANSI/ASCE/EWRI 13-13 focuses on installation and examines site investigation, installation procedures, and inspection. ANSI/ASCE/EWRI 14-13 provides guidelines for operation and maintenance (O&M) of urban subsurface drainage, including O&M plans, safety, water quality, inspection, maintenance, and rehabilitation. This new edition contains major state-of-the-art updates to Standard 12 regarding the hydraulics of different types of drains, including drain pipes, aggregate drains, geotextile drains, and geonets and geocomposite drains. Throughout these Standards, references have been added and updated. Together, the three Standards offer comprehensive guidance for the collection and conveyance of subsurface drainage waters in industrial, commercial, residential, and recreational areas, as well as for applications such as airports, roads, and other transportation systems. Engineers working with subsurface drainage systems, along with the owners of such systems, will find these updated standards to be a valuable resource. Prepared by the Urban Drainage Standards Committee of the Standards Development Council of the Environmental and Water Resources Institute of ASCE.

Prepared by the Committee on Oxygen Transfer Standards of the Special Standards Division of the Environmental & Water Resources Institute of ASCEMeasurement of Oxygen Transfer in Clean Water, ASCE/EWRI 2-22, provides the latest methods for measuring the rate of oxygen transfer from diffused gas and mechanical oxygenation devices to water. This standard aims to be general enough to be applied to all clean water unsteady-state tests and specific enough to incorporate all essential procedures.This standard is an update of the 2006 version. Revisions to the mandatory requirements include use of the nonlinear least squares estimates for parameter fitting, the need to correct and report results to a common TSS level, and acceptance of a nitrogen gas method for deoxygenation. A new commentary provides a detailed description of a supersaturated oxygen desorption method. This method may be incorporated into a future revision of the standard as an acceptable method, pending a comparison of results with existing deoxygenation methods.ASCE 2-22 is meant to be used by engineers in the preparation of specifications for compliance testing by manufacturers developing performance information and is applicable to laboratory scale oxygenation devices with water volumes of a few gallons, as well as to full-scale systems with water volumes typical of those found in the activated sludge wastewater treatment process.

Prepared by the Blast Protection of Buildings Standards Committee of the Codes and Standards Activity Division of the Structural Engineering Institute of ASCEBlast Protection of Buildings, ASCE/SEI 59-22, provides minimum requirements for planning, design, construction, and assessment of new and existing buildings subject to the effects of accidental or malicious explosions. The standard includes principles for establishing appropriate threat parameters, levels of protection, loadings, analysis methodologies, materials, detailing, and test procedures. It provides a comprehensive presentation of current practice in the analysis and design of structures for blast resistance. The need for this standard had been identified in advance of the events of September 11, 2001. Key individuals of the original nucleus of the committee and the Structural Engineering Institute (SEI) discussed development of this standard as the events of that day began to unfold. This first revision of the standard substantially updates requirements for materials detailing. Requirements related to lightweight concrete have been relaxed, but new requirements for welding structural steel are added. Sections are added for composite construction, both for concrete-and-steel composite and for fiber-reinforced polymer composite members. Methods to analyze glazing performance are updated, and a simplified approach to assess fragmentation is added to the provisions, with the more elaborate approach retained in the commentary.Standard ASCE/SEI 59-22 provides essential guidance for building owners and developers in the private and public sectors, and their design consultants including structural engineers, architects, and security experts.

Prepared by the Sustainable Infrastructure Standards Committee of the Committee on Sustainability of ASCEStandard Practice for Sustainable Infrastructure, ASCE/COS 73-23, addresses development and implementation of sustainable infrastructure solutions through the entire infrastructure life cycle. It can be used for infrastructure solutions of any scale, although it is specifically not intended to unduly burden small projects.The standard guides project leaders to encourage transformative development of the infrastructure solution from the earliest stages; consider and analyze all reasonable alternatives; and consider natural, no-construction, and constructed project solutions. It also provides life-cycle cost analysis requirements to protect and professionally steward private and public funds.ASCE 73-23 will help owners or owner agencies, architects and engineers, support organizations, and contractors and subcontractors meet stakeholder needs and issues, as well as balance the economic, environmental, and social impacts (positive and negative, quantifiable and nonquantifiable) throughout the life cycle of sustainable infrastructure solutions.

Prepared by the Fiber Composites and Polymers Standards Committee of the Codes and Standards Activities Division of the Structural Engineering Institute of ASCELoad and Resistance Factor Design (LRFD) for Pultruded Fiber Reinforced Polymer (FRP) Structures, ASCE/SEI 74-23, is intended for use in the design of new buildings and other structures constructed of pultruded fiber–reinforced polymer (FRP) composite structural shapes, connections, and prefabricated building products. It addresses pultruded FRP structural shapes that have symmetric and balanced glass reinforcement and fiber architecture combined with a polymeric matrix. This standard is limited in its applicability to pultruded FRP composite shapes that utilize glass fiber reinforcement. The provisions were developed to apply to buildings and other structures; thus, the scope of the provisions resembles the scope of ASCE 7, Minimum Design Loads and Associated Criteria for Buildings and Other Structures. FRP structural systems, members, and components are corrosion resistant but may be sensitive to certain service environments. The registered design professional is advised to ascertain that the provisions and material constants herein apply to the structural component or system under consideration. The design strength and stiffness values provided in this standard apply to new structural products that are being placed into service for the first time. The standard provisions may not apply to structural products that have been put into service prior to approval of the standard by ASCE. This standard is intended for use by licensed engineers, structural engineers, architects, other professionals licensed in design of particular structures, and design professionals.

Prepared by the Minimum Design Loads and Associated Criteria for Buildings and Other Structures Standards Committee of the Codes and Standards Activity Division of the Structural Engineering Institute of ASCEMinimum Design Loads and Associated Criteria for Buildings and Other Structures, ASCE/SEI 7-22, provides the most up-to-date and coordinated loading provisions for general structural design. This standard prescribes design loads for all hazards including dead, live, soil, flood, tsunami, snow, rain, atmospheric ice, seismic, wind, and fire, as well as how to evaluate load combinations. The 2022 edition of ASCE 7, which supersedes ASCE 7-16, coordinates with the most current structural material standards including those from ACI, AISC, AISI, AWC, and TMS. Significant technical changes include the following: new target reliability tables for tsunami and extraordinary loads; new alternative method for loads from water in soil; terminology change from guardrail system to guard system; new provisions for emergency vehicle loads; updated tsunami data for Hawaii and many populous locations in California, coordinated with the state agencies; new tsunami provisions for above-ground horizontal pipelines; revised ground snow loads to reflect more recent snow load data and reliability-targeted values; revised method for estimating drifts to include a wind parameter; design rain load revisions to explicitly consider a ponding head; new risk-targeted atmospheric ice load data for the continental United States and Alaska; multi-period response spectrum data that eliminates need for Fa and Fv coefficients; new lateral force resisting systems such as steel and concrete coupled composite plate shear walls, reinforced concrete ductile coupled shear walls, cross-laminated timber shear walls, and concrete tabletop structures; new provisions for rigid wall, flexible diaphragm buildings (big box stores/warehouses); new and updated provisions for supported and interconnected (coupled) nonbuilding structures; new wind provisions for MWFRS and C&C of elevated buildings; new chapter of tornado provisions; new long return period hazard maps for wind and tornado; and digital data available for all hazards at ASCE Hazard Tool (https://asce7hazardtool.online/).In addition to the technical changes, the 2022 edition of ASCE 7 provisions are accompanied by detailed commentary with explanatory and supplementary information developed to assist users of the standard, including design practitioners, building code committees, and regulatory authorities. Standard ASCE/SEI 7 is an integral part of building codes in the United States and around the globe, and is adopted by reference into the International Building Code, International Existing Building Code, International Residential Code, and NFPA 5000 Building Construction and Safety Code. Structural engineers, architects, and those engaged in preparing and administering local building codes will find the structural load requirements essential to their practice.

Prepared by the Disproportionate Collapse Mitigation of Buildings and Other Structures Standards Committee of the Codes and Standards Activities Division of the Structural Engineering Institute (SEI) of ASCEStandard for Mitigation of Disproportionate Collapse Potential in Buildings and Other Structures, ASCE/SEI 76-23, provides a consensus perspective for mitigating disproportionate collapse. It describes minimum requirements for planning, assessment, analysis, material selection, design and detailing, construction, and qualification testing to mitigate disproportionate collapse of new and existing buildings and other structures. The performance-based approach in this standard allows engineers maximum flexibility when finding solutions. Guidance is given about risk assessments and avoidance, as well as characteristics that enhance collapse resistance including the strength, ductility, deformation capacity, and robustness necessary to resist collapse without exceeding relevant limit states. It includes threat-specific and non-threat-specific methodologies and identifies direct design and indirect design approaches. This standard is intended to address the same structures covered by ASCE 7, Minimum Design Loads and Associated Criteria for Buildings and Other Structures, and is written in mandatory language, with the expectation that it could be referenced by building codes or contracts documents.ASCE 76-23 provides essential guidance to structural engineers, architects, and those engaged in preparing and administering local building codes.

Prepared by the Stainless Steel Specification Committee of the Codes and Standards Activities Division of the Structural Engineering Institute of ASCESpecification for the Design of Cold-Formed Stainless Steel Structural Members, Standard ASCE/SEI 8-22, provides design criteria for the determination of the strength of cold-formed stainless steel structural members and connections for use in buildings and other statically loaded structures. It is a significant update to ASCE 8-02 that incorporates the latest findings in both stainless steel and carbon steel research and practice.Major changes include adoption of format, provisions, and reliability indexes aligned with AISI S100-16 where possible; adoption of the use of initial modulus of elasticity and transverse 0.2% offset yield stress; integration of new design methods such as the direct strength method and the continuous strength method; corrosion resistance requirements specific to stainless steel applications; a broader scope of stainless steel alloys; and a useful summary of applicable alloy properties. This updated standard has been adopted into the International Building Code.The design strength requirements of this standard are intended for use by structural engineers and those engaged in preparing and administrating local building codes.

Prepared by the Dry Dock Standards Committee of the Ports and Harbors Committee of the Coasts, Oceans, Ports, and Rivers Institute (COPRI) of ASCEDry Dock Standard, ASCE/COPRI Standard 77-22, is intended to address a deficiency in commercial shipyards, specifically safety certification of dry docking facilities. The US Navy has a standard for certifying facilities that drydock its ships. In addition, the US Coast Guard has a procedure for certifying facilities that drydock its ships. However, there has been no commercial standard for certifying dry docks. Many dry dock owners and operators obtain "commercial certifications" from third-party engineers, yet these certifications are not performed to a standard and are typically focused on the structural capacity. Dry dock accidents have occurred many times over the last two decades, attributable to inadequate maintenance and inspections. The intent of this standard is to minimize the risk to personnel and the ships being drydocked. In addition, emphasis on maintenance and inspection provides the insight for facility owners and operators to enable repairs before the catastrophic loss of their capital assets.This standard is intended for use by dry dock owners, Dockmasters, dry dock maintenance engineers, engineers engaged in dry dock inspection and certification, ship owners, and port engineers.

Prepared by the Seismic Evaluation and Retrofit of Existing Buildings Committee of the Codes and Standards Activities Division of the Structural Engineering Institute of ASCESeismic Evaluation and Retrofit of Existing Buildings, Standard ASCE/SEI 41-23, describes deficiency-based and systematic procedures that use performance-based principles to evaluate and retrofit existing buildings to withstand the effects of earthquakes. The standard presents a three-tiered process for seismic evaluation according to a range of building performance levels by connecting targeted structural performance and the performance of nonstructural components with seismic hazard levels. The deficiency-based procedures allow evaluation and retrofit efforts to focus on specific potential deficiencies deemed to be of concern for a specified set of building types and heights. The systematic procedure, applicable to any building, sets forth a methodology to evaluate the entire building in a rigorous manner. This standard establishes analysis procedures and acceptance criteria and specifies requirements for foundations and geologic site hazards; components made of steel, concrete, masonry, wood, and cold-formed steel; architectural, mechanical, and electrical components and systems; and seismic isolation and energy dissipation systems. Checklists are provided for a variety of building types and seismicity levels in support of the Tier 1 screening process. This new edition, which updates and replaces previous versions of ASCE 41, introduces provisions to align with the multipoint response spectra in the new USGS seismic hazard model. The standard now points to AISC 342 and ACI 369 for provisions related to structural steel and reinforced concrete existing buildings, respectively, both of which significantly revised the provisions found in the 2017 edition of the standard. There are a number of other changes, including significant revisions to the nonlinear analysis provisions, how to develop structural component modeling parameters and acceptance criteria, and provisions for unreinforced and reinforced masonry.ASCE 41-23 is a primary reference for structural engineers addressing the seismic resilience of existing buildings and for building code officials reviewing such work. It also will be of interest to architects, construction managers, academic researchers, and building owners.

Prepared by the Atmospheric Water Management Standards Committee of the Environmental and Water Resources Institute of ASCEGuidelines for Operational Hail Suppression Programs, ANSI/ASCE/EWRI 39-23, provides a general overview of the science and technology of hail suppression combined with specific strategies and procedures required to design, conduct, and evaluate hail suppression operations. Such operational activities as airborne, ground-based, and rocket and artillery delivery systems are addressed. The standard includes both mandatory and advisory provisions.Revisions to the mandatory requirements of this standard include improvements to the strategy, practice, technologies, and techniques used to implement the standard; improved figures and text to better express the latest science and its practice; and updated sections on abbreviations, definitions, notation, and symbols.The standard provides guidance for water resource, agricultural, energy, and insurance managers, as well as others who design, operate, or evaluate a decision on hail suppression projects. If this standard is used as part of an agricultural, energy, or water security/sustainability program, the environmental and cost aspects of such interdisciplinary efforts should be considered.

Prepared by the Water Infrastructure Security Enhancements Standards Committee of the Standards Development Council of the Environmental & Water Resources Institute of ASCEGuidelines for the Physical Security of Water and Wastewater/Stormwater Utilities, ASCE/EWRI 78-24, provides guidelines on the evaluation and enhancement of physical security of facilities used in potable water sources, treatment, and distribution systems, as well as for wastewater and stormwater facilities. It provides a holistic approach to integrate modern security practices into the management, operation, construction, or retrofit of water, wastewater, and stormwater systems. ASCE 78-24 is a revision to and supersedes ANSI/ASCE/EWRI 56-10, 57-10, Guidelines for Physical Security of Water and Wastewater/Stormwater Facilities.Societal changes in the last decade have led to the emergence of new types of foreign and domestic threats such as groundswell attacks on water utilities. Previous water sector security guidelines depended on a methodology that chose only from predefined malevolent actor types, leading to the exclusion of emerging threats. This approach reduced assessing the capability of malevolent actors to guesswork and could result in inaccurate threat assessments and inadequate or superfluous countersecurity measures.ASCE 78-24 provides a cumulative defense strategy that can recommend countermeasures against both known and unknown adversaries. Key concepts and terms covered in the standard will help guide water utilities in creating defense strategies against traditional and new types of attacks. Reference tables for calculating degrees of difficulty to compromise the physical security countermeasures and an example application on a facility are included in the standard. Protecting critical water assets can ensure continuity of business, protection of water quality, provision of sufficient water quantity, public confidence, and protection of public health and safety. These guidelines will be valuable to water utility operators, as well as anyone involved in monitoring physical security of water, wastewater, or stormwater facilities.

Prepared by the Standards Committee on Fitting of Hydraulic Conductivity Using Statistical Spatial Estimation of the Standards Development Council of the Environmental and Water Resources Institute of ASCEStandard Guideline for Infiltration-based Stormwater Control Measures for Permeable Soils, ASCE/EWRI 79-26, provides comprehensive guidance for infiltration-based stormwater control measures (SCMs) for permeable soils and addresses their design, installation, and operation and maintenance. This standard focuses on three types of widely used SCMs: dry wells, vegetated (grassy) swales, and infiltration trenches. These structural practices capture urban stormwater runoff, promote infiltration into permeable soils, support groundwater recharge, and help remove or degrade pollutants within the unsaturated zone.This standard outlines key design considerations essential to effective SCM performance, including soil properties, infiltration rate estimation, climatic influences, groundwater protection, and selection of an appropriate design basis. It presents detailed methodologies for estimating capacities and typical configurations for dry wells, vegetated (grassy) swales, and infiltration trenches, along with approaches for evaluating system capacity and optimizing SCM sizing. Additional chapters address installation procedures, operation and maintenance requirements of these SCMs, documentation, and performance assessment strategies.Standard ASCE/EWRI 79-26 is a vital resource on the design, construction, and maintenance of SCMs for environmental engineers, stormwater professionals, and regulatory officials involved in sustainable stormwater management, infrastructure development, and water quality protection.