Standards – serie

Prepared by the Nuclear Standards Committee and the Task Committee on Dynamic Analysis of Nuclear Structures of the Codes and Standards Activities Division of the Structural Engineering Institute of ASCESeismic Design Criteria for Structures, Systems, and Components in Nuclear Facilities provides stringent design criteria for multiple aspects associated with nuclear facilities. Because of the potential risk with nuclear hazards, nuclear facilities need to have a much lower probability than conventional facilities of sustaining structural damage caused by earthquake. The goal of this standard is to ensure that nuclear facilities can withstand the effects of earthquake ground-shaking while retaining target performance goals. Topics include evaluation of seismic demand, evaluation of structural capacity, load combinations and acceptance criteria for structures, ductile detailing requirements, equipment and distribution systems, and seismic quality provisions. This new edition, which updates and replaces the previous edition of ASCE 43, includes a new chapter on the design of seismically isolated nuclear facilities, as well as provisions for prototype and production testing of isolators. Standard ASCE/SEI 43-19 will be of use to engineers and analysts involved in the design and assessment of new or existing nuclear structures, systems, or components. It can also be used for facilities handling explosives, toxic materials, or chemicals; for facilities where safety, mission, or investment protection is an explicit design goal.

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 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 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 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.