The soil on the site examined is a poorly consolidated dune sand, partly solonized. The sub-station building is extensively cracked, particularly in the south west, and North West corners. The damage has been caused initially by foundation settlement, and further aggravated by the shrinkage of the cement bricks. Foundation settlement was due mainly to poor drainage disposal, causing the area beneath the foundations to become saturated, with a resultant loss of strength of the subsoil. The loading on the foundation is such that there is little margin of safety even when the material is in the dry state, and possibly shear failure of the soil has also occurred, contributing to some of the foundation settlement. The eastern portion of the building is only slightly affected, mainly because the foundation are located at a greater depth, thus increasing the bearing capacity, and also partly because of the more rigid construction of the wells in this area. To remedy the situation adequate drainage disposal and the sealing of the building surrounds will be necessary. Underpinning with a concrete pad at the North West and south west corners is also advisable to reduce the loading at these points, and prevent further settlement.