As earth fill needs to be placed on top of the steel roof of the tank and also taking into account construction loads
, we need to consider equally spaced steel internal columns with radial girders to support the roof structure.
The infill concrete is generally cured quickly and, in any case, the load capacity of the steel alone may be required upon the almost construction loads
In addition to advancing the engineering and procurement work, Guinea Alumina's continuing early works' construction program in the quarter included resettlement, vocational training, refinery area clearing, earth works for the rail spur from the main line to the refinery site, storm water pond blasting and dyke construction, and installation of a new bridge at Boke to remove the only existing road transportation bottleneck for heavy construction loads
from the port of Kamsar to the refinery site.
Already, changes have been observed in the replacement of arsenic-treated wood with non-arsenic copper-treated wood within construction loads
In addition, the completed back spans provide a very stable structure to resist wind and other construction loads
and to greatly simplify geometry control operations.
The I-35W bridge collapse was a tragedy, which the National Transportation Safety Board concluded was caused by a design flaw, compounded by large weight increases from upgrade projects over the years, and the traffic and construction loads
on the day the bridge collapsed.