Skip to content
We are passionate designers, artisans, tradespeople and project managers.
This Calculator Tool is highly specific to estimating key materials for building wall systems using straw bales. It has been created for owner-builders and contractors with a good to excellent knowledge of straw bale construction.
Cement Lime Plaster assumes that your cement content is not more than 50% and lime not less than 50% sand as the aggregate. We always use Saint Lawrence Cement Mason’s High Bond Portland-Lime Type N. You can source equivalent product in your area.
Earthen Plaster assumes a plaster of approximate proportions, 25% clay, 25% sand, 25% manure or sillage and 25% chopped straw. For precise recipes, we recommend thorough research and understanding of earthen plasters, site conditions, available clay and other conditions that affect recipes.
While edge stack provides savings in the number of bales and works well for cement-lime plasters, this orientation of the bale should not be used if you are planning to use an earthen plaster.
Gable length is the distance of the bale wall from corner to corner at the base of the gable. This automatically assumes a matching, opposite gable wall and multiplies your length by two. For designs without matching gable walls at each end, some interpretation will be necessary.
We assume in these calculations that the openings are rectangular, all sides are 90 degrees to the window, using plywood to form the opening (window/door buck). If you select round, it assumes that all sides are curved to some desired radius, using diamond lathe to form the curves.
Note: The material calculator provides for some margin of error, calculating the surface/area regardless of number and size of openings.
Below, you will find the results of your calculation. If you wish to make changes you can revise your measurements and calculate again.
To print your results, choose print from your browser. Or to have your results emailed to you, enter your address below:
Your results have been sent to your email address.
Contact us to discuss how we can manage your project.
Evolve Builders Group Inc delivers full-service general contract and green construction services for turn-key additions, renovations and new builds. We also supply hard-to-source green building materials.
Harvest Homes is the busy straw bale wall system specialist division.
Fermata – Works of Earth reinterprets ancient techniques to create unique, artistic and durable earthen plasters, earthen bread ovens, adobe floors and compressed earth block walls.
2016 © Evolve Builders Group Inc.
Site by Barking Dog Studios