This poultry range shelter features permanent structure in a portable type building. It's built with simple, rigid construction using casein glue at important joints. The use of knee braces or gussets to join rafters and studding (see illustrations) eliminates cross bracing inside the shelter, allowing easy access to the inside. The complete rafter and stud assembly can be nailed and glued before putting it up.
Morford, V. J. and Odegaard, A. T.
"Portable and Permanent,"
Iowa Farm Science: Vol. 3
, Article 7.
Available at: https://lib.dr.iastate.edu/farmscience/vol3/iss12/7