STRAW – 4 Lessons (Introduction) 4 short ACTeco Introduction courses in Straw Bale Building – straw bales as building material, straw bale Infill, load bearing straw bale and Wrapping with straw bales (external insulation). STRAW 01 Intro – Straw Bales as Building Material See More STRAW 02 Intro – Straw Bale Infill Constructions See More STRAW 03 Intro – Load Bearing Straw Bales See More STRAW 04 Intro – Wrapping with Straw Bales See More Course Content STRAW 01 Intro – Straw Bales as Building Material STRAW 02 Intro – Straw Bale Infill Constructions STRAW 03 Intro – Load Bearing Straw Bales STRAW 04 Intro – Wrapping with Straw Bales