August 27, 2010

What is the Dyn Load Category in RISAFloor?

The Dyn Load represents the additional load that must be included in the calculation of the total seismic weight.

Total Seismic Weight = Self Weight + Dyn Load

RISAFloor does not include all applied loads as part of the seismic weight. For example, the super-imposed dead loads (DLPre or DLPost) are not included. Only the self weight and dyn loads are part of the total seismic weight.

The total seismic weight used to calculate the force is calculated for each diaphragm only. Therefore, any seismic weight that is not connected to diaphragms at all (e.g. walls located outside of a slab edge) not be included in the seismic force distribution.

Tags: Seismic, RISAFloor, New

August 30, 2019 | Slab, RISAFoundation, New, Reinforcement

Add Single Layer of Reinforcement anywhere in Slab

RISAFoundation has the ability to create a single layer of reinforcement anywhere in a slab. This improvement allows for a more straightforward design of thin, lightly loaded slab-on-grade where two layers of reinforcement (top/bottom) would be unnecessary. In order to add a single layer of reinforcement, users select Single Layer from the Rebar Options drop-down found in the Mat Slab tab of the Design Rules spreadsheet. When a user selects Single Layer, only the inputs for Top Bar size and the Max/Min Top Bar Spacing are used. Additionally, the value of Top Cover found in the General tab is used to define the depth of the bar in the slab. Note: When Mid-Depth Only is selected, the Bottom Bar size, the Max/Min Bot Bar Spacing and the Bot Cover are used. The design of the slab will differ based on whether the reinforcement is placed above or below the mid-depth of the slab. When the single layer is placed above mid-depth, the slab will be designed according to slab-on-grade requirements found in ACI 360-R and ACI 223. These provisions focus mainly on design in response to crack control. When the single layer is placed below mid-depth, the reinforcement is assumed…

October 30, 2020 | Seismic, RISAFoundation, New

Seismic Factors in RISAFoundation Load Combination Generator

Seismic factors, including Omega, Rho and Ev, can now be included in automatically generated Load Combinations. Values for Omega and Rho shall be entered into the Seismic tab of the Model Settings to be considered in the analysis. To include these factors in the non-overstrength Load Combinations, check the “Include Ev (vertical)” and “Include Rho” boxes on the Load Combination Generator dialog for the Seismic Load Options. To generate overstrength (Omega) Load Combinations, choose a radio button under the Overstrength LC Options and select the “Include Ev (vertical)” check box…

November 21, 2022 | ADAPT-Builder, ADAPT, New, Reporting, Popular

Detailed Calculation Report for Minimum Required Reinforcement

Users can now generate an Excel spreadsheet for each design section showing a summary of the design section properties, reinforcement, and moment demand and capacity. These detailed calculation reports currently include minimum required reinforcement as shown on the As,min tab of the spreadsheet. These calculations include code references and equations and are available for ACI 318-14 and ACI 318-19 codes. To view the Calculation Report, double-click on a design section. In the Support Line Properties Window, select the Calculation Report option at the bottom of the Design Sections tab to create the XLS Report. Select “Yes” when prompted to view the XLS Report for the Minimum Required Reinforcement…