As the use of hemp stalks in construction is a novel approach, Modece has conducted structural studies to ascertain its physical strength and performance under compression, tension and bending. Through our initial studies, it was possible to technically compare the use of hemp stalks with established natural structural materials such as Timber.
The capacity of hemp in compression has not been exploited in the same way it has in tension, reflected by the sheer amount of products made from the fibre and relatively few from the shiv. This would suggest that the material’s most efficient use is in tension yet does not determine that it can never be used in compression. It is in the structure of the stalk that its abilities in compression may lie.
Analysis and structural testing of the hemp stalk shows that it could potentially perform as a load bearing element. Stresses between 11 and 19N/mm2 in compression and over 70N/mm2 in tension were recorded.
The stalk’s load-bearing capability is comparable to timber.
Theoretically, this establishes the potential of hemp stalk clusters to replace Timber stud work in construction.
Developing on this capacity, Modece aims to introduce hemp as a highly sustainable, locally produced alternative material to Timber which is currently predominant in mainstream construction of at least 95% of dwellings in the UK.