October 2, 2017
This time of the year many of us will start singing this season's greatest hits: Let it Snow, white Christmas, and... Winter Wonderland. While these songs bring cheer to all our hearts, they are also a reminder to structural engineers of the unique design challenge posing many regions: Snow Loads! Snow, though picturesque, poses significant challenges to structural integrity, especially in regions with harsh winter climates. The accumulation of snow atop buildings and structures exerts immense pressure, demanding meticulous engineering strategies to guarantee stability and safety. Understanding the impact of snow loads and implementing effective design solutions is pivotal in constructing resilient structures. 1. Load Calculations: Precise calculation of snow loads involves considering local weather data, snowfall patterns, and building codes. Engineers utilize complex formulas and standards like ASCE 7 (American Society of Civil Engineers) to determine the maximum expected snow load. 2. Structural Analysis: Advanced computational tools aid in simulating snow accumulation scenarios, enabling engineers to assess stress points and potential weaknesses in structures. Finite element analysis helps anticipate the structural response to snow loads, guiding reinforcement strategies. 3. Design Adaptations: Designing with snow loads in mind involves reinforcing roofs, trusses, and support systems. Sloped roofs, for instance, aid…
The consideration of Live Load reduction is a feature that has been in RISAFloor from the very beginning. However, recent changes to the interface make it significantly easier for you to understand how live load reduction is affecting the design forces in your structure.
RISAFloor now has the ability to double-click a member to open the Member Information dialog. This feature has been in RISA-3D but now it is available in RISAFloor. Double click any member in your model and the Member dialog box opens. It has three tabs: General, Properties and Design.
The CSA A23.3-14 code has been implemented in RISA-3D v15.0, RISAFloor v11.0, and RISAFoundation v9.0.
The latest releases of RISAFloor and RISA-3D include the following updates to wood design per the Canadian codes:
RISAFloor v11 allows users to add parapets while allowing the program to calculate the wind loads per the ASCE 7 parapet wind loading requirements.
RISAFloor now has the ability to model a Semi-Rigid, Rigid or Flexible diaphragms to distribute lateral loads. For more information about the different diaphragm types, click on the link below.
The new CSA O86-14 code has been implemented in RISA-3D v15.0 and RISAFloor v11.0
RISA-3D now supports hot rolled steel design for the Canadian market according to CSA S16-14.
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