2010年11月25日 · Continuous Beam with Distributed Load. For a continuous beam with 3, 4 or 5 supports and distributed load the reaction support forces can be calculated as. R = c r q L (1) where . R = reaction support force (N, lb f) c r = reaction support force coefficient from the figure above . q = distributed load (N/m, lb f /ft) L = span length (m, ft)