Truss Block 1 : (Fire Pr) A structural piece used to separate and hold the beams of a truss beam ladder. Note: If the block also holds the rung it is called a rung block
Ralph W. Burklin & Robert G. Purington, Fire Terms: A Guide to Their Meaning and Use, National Protection Association, Boston, MA 1980 USA. (Guide: Meaning and Use, Nat Prot Association Fr Srvc - Amer) {457}