Tests were carried out on 24 lightweight concrete deep beams to study the effects of web openings on strength and cracking. The results of the investigation, studied in the light of previous investigations on deep beams without openings, have led to some conclusions which are useful in the design of deep beams where openings have to be provided for services or for access. A method of analysis is proposed, which complements that previously given in the structural engineer (October 1972) for deep beams without openings. /Author/