DAD_ESWL v1.0 – Database-Assisted Design Software for High- and Mid-Rise Buildings

The software, which incorporates a user-friendly graphical interface, is an integrated design tool providing (i) time series of calculated wind-induced floor loads acting at the center of mass, based on time series of aerodynamic pressures and inertial forces, (ii) time series of member demand-to-capacity indexes, of inter-story drift ratios, and of accelerations.

The software incorporates ASCE 7-16 Standard requirements, ACI 318-10 requirements for reinforced concrete members, and AISC Specifications 360-10 for Steel Buildings. If requirements based on other documents are used, the corresponding portions of the software must be modified accordingly. For access to the source code, please find contact information at the end of this web page.

Details on structural members and whole structure

• Dimensions of members
• Cross-sectional shapes of sections (W or HSS for steel structures)
• Reinforcement details (for RC structures)
• Number of stories
• Heights of floors

Structural static and dynamic properties

• Number of modes and modal damping ratios
• Mass and mass moment of inertia with respect to mass center for each floor
• Influence coefficients, defined as the internal forces induced in cross sections of members by a unit load applied to the center of mass of a given floor
• Internal forces in members induced by dead loads due to self-weight, super-imposed dead loads, and live loads
• Mode shapes
• Modal periods

Wind pressure data or wind loads

• Time-varying pressure coefficients for each pressure tap, or wind loads applied at the mass center of each floor, obtained from wind tunnel tests on rigid models or from CFD analyses

Wind climate at building site

• Databases of directional wind speeds for each type of wind occurring at the site (e.g., hurricane, thunderstorm, and synoptic wind), provided by the wind engineering laboratory.

All information required for DAD must be provided as a MATLAB formatted file (.mat file) or be typed in the software. The details are described in the accompanying User's Manual (downloaded below).

• Peak demand to capacity indexes for all members
• Peak inter-story drift ratios calculated along selected column lines
• Peak resultant accelerations calculated along selected column lines

The model scale time histories of the floor wind loads for the 60-story CAARC (Commonwealth Advisory Aeronautical Research Council) building for 36 wind directions in 10 degree increments are also available for download. The loads are based on simultaneous pressure time histories on the external surfaces of the building model, obtained from wind tunnel tests performed at the CRIAC IV Boundary Layer Wind Tunnel, Prato, Italy.

• User's manual including installation instructions (NIST Technical Note 2000: Database-Assisted Design and Equivalent Static Wind Loads for Mid- and High-Rise Structures: Concepts, Software and User's Manual, PDF format)

  Note: Last Updated 2018/06

• NIST Technical Note for Introductory Tutorial (NIST Technical Note 2001: Introductory Tutorial for DAD: Design Examples of High-Rise Building for Wind, PDF format) Note: Last Updated 2018/06

• Standalone executable version of the DAD_ESWL v1.0 software DAD_ESWL_v1p0.zip. To run standalone Matlab programs, you need to install the MCRInstaller software from The Mathworks, Inc. The current version can be downloaded from http://www.mathworks.com/products/compiler/mcr/index.html.

• Sample 60-story Building Inputs for the User's Manual (60_story_example.zip

  Note: Last Updated 2018/06

• Five example projects for the Introductory Tutorial
  • Project_01.zip
  • Project_02.zip
  • Project_03.zip
  • Project_04.zip
  • Project_05.zip

  Note: Last Updated 2018/06

  Note: Pressure data have been obtained from wind tunnel tests carried out at the CRIACIV Boundary Layer Wind Tunnel, Prato, Italy, http://www.criaciv.unifi.it/ and Tokyo, Polytechnic University Aerodynamic Database, http://wind.arch.t-kougei.ac.jp/system/eng/contents/code/tpu.

• HR_DAD v1.1 (2009)
• HR_DAD_RC_v1.0 (2010)

Please email any questions, comments, or requests for the software (source code) to donghun.yeo@nist.gov or sejun.parkk@gmail.com.