Before revision: Gilman was an admirer of Buckminster Fuller's architectural trusses, and developed more strength by rotating the alignment of two tetrahedrons in relation to each other by 120 degrees.The strength and flexibility of Gilman's Truss is described by Alexander Lorimer in 2013.
After revision: Gilman was an admirer of Buckminster Fuller's architectural trusses, and developed a stronger matrix, in part by rotating an alignment of tetrahedral nodes in relation to each other