A Dataset of Mass Timber and Hybrid Mass Timber Floor Structure Designs, Including Sizing, Self-Weight, and Embodied Carbon Data
Description
The design of mass timber structures affects performance outcomes such as embodied carbon (EC), floor system depth, and self-weight. To better understand the relationships between design decisions and performance outcomes, a parametric modeling approach was followed to generate a dataset for five mass timber and hybrid mass timber structural floor system types. The model consists of both a Grasshopper model interfaced with Rhino and a spreadsheet-based model, which are used to generate, size, and evaluate structural floor system designs for system depth, self-weight, and EC. The Grasshopper model is used to generate designs and perform structural sizing of the floor system elements. The spreadsheet model is used to calculate self-weight of the components of each design from the element sizing outputs. Self-weight is multiplied by each material's EC factor to estimate the total EC of the design. The modeling process and resulting dataset are part of a larger research effort to develop early-stage design guidance for practitioners. The dataset may be used by others to study trends amongst design objectives for mass timber floors, or to extract the structural element sizing data for use with customized project-specific EC data. Two files are provided. The csv file includes only the final data values based on set assumed material EC factors. The xlsx file includes a tab which allows the user to enter custom material EC factors. The data tab automatically re-calculates the EC values for each design based on the user-entered material factors. A "Read Me" tab includes additional information and instructions for how the spreadsheet may be modified. Only blue cells in the "Material EC" tab should be edited. The xlsx file also maintains the original formulas used in post-processing additional design data following the design sizing output from the Grasshopper model. After customizing material EC factors in the xlsx file, it is recommended that a copy of the "Data" tab be saved as a csv file to reduce the file size to a more manageable size.
Files
Steps to reproduce
1. Program a parametric model to generate floor designs and perform structural sizing of all structural elements 2. Collect material embodied carbon factors from EPDs for CLT, Glulam, Steel, Concrete, Gypsum Board, and Intumescent Coating 3. Based on structural sizing and EPD data, calculate system depth, fireproofing quantities, material self-weight, and embodied carbon of the designs using spreadsheet equations to automate calculations
Institutions
Categories
Funding
American Institute of Architects