This Part of BS 8110 has been prepared under the direction of the Civil Engineering and Building Structures Standards Committee.
BS 8110 deals with the structural use of concrete. It is published in three Parts:
— Part 1: Code of practice for design and construction;
— Part 2: Code of practice for special circumstances;
— Part 3: Design charts for singly reinforced beams, doubly reinforced beams and rectangular columns.
The design charts in this Part of BS 8110 have been prepared in accordance with the assumptions laid down in Part 1, with the intention that they may be used as standard charts and so avoid duplication of effort by individual design offices.
This Part of BS 8110 reflects the change in the characteristic strength of available reinforcing steel and supersedes CP 110-2:1972 and CP 110-3:1972 which are both withdrawn.
This part of BS 8110 covers design charts for singly reinforced beams, doubly reinforced beams and rectangular columns. These design charts cannot be used to obtain the complete detailed design of any member but they may be used as an aid when analysing the cross section of a member at the ultimate limit state. The charts have been based on the assumptions laid down in BS 8110-1, use being made of the parabolic-rectangular stress block throughout. Full details of the derivation of the charts are given in Appendix.