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The program allows for different footing types, stiffened Raft, Waffle Raft and Strip footing design for the classes of structures set out in AS2870-2011, Section 1.1.
The program is a design ''tool'' to assist the user in designing raft and waffle raft slabs and strip footings. It is intended to be used in conjunction with the design procedures and site management requirements set out in AS2870-2011. A thorough understanding of the importance of the geotechnical input data relating to the physical characteristics of the site foundation soils is considered a necessary prerequisite for the satisfactory use of the package.
The normal working limits for which CORD is recommended are:
Articulated superstructure, 20 mm ≤ ys ≤ 250 mm
Non-articulated superstructure, 20 mm ≤ ys ≤ 120 mm
CORD 8.0 includes the design calculation of footings for the influence of trees (tree drying effects) and the effects of tree removal or death. These are calculated by the program.
For ys < 50 mm the moment of resistance for centre heave (hogging) is the critical design case. The depth of footing required is very sensitive to the percentage reinforcement for this case. Designs where the footing depths are significantly less than those given in Section 3.0 of AS2870-2011, which have a history of satisfactory field performance, should be reviewed by a Qualified Engineer.
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