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Abstract
In the summer of 1971, the Corps of Engineers replaced the roof on Building 1053 at Ft. Wainwright, Alaska, with a loose-laid inverted roof system. This roof system was selected to permit an evaluation of its performance and potential suitability for general use in Corps construction. The installation of the roof also permitted an analysis of its construction costs and a record of the construction procedures. Costs were identified in terms of material used and man hours required. For the analysis, the job was broken down in four phases: 1) removal of existing roof material and preparation of the deck; 2) application of a surface of plywood decking; 3) replacement of the butyl membranes and installation of flashing; and 4) placement of the insulation and ballast pavers. The results show that the installation time requirements compare favorably with those of conventional built-up roofs, but the butyl membrane and the pavers cause higher material costs. Advantages are in the maintainability of the roof system and in its increased life expectancy.
In the summer of 1971, the Corps of Engineers replaced the roof on Building 1053 at Ft. Wainwright, Alaska, with a loose-laid inverted roof system. This roof system was selected to permit an evaluation of its performance and potential suitability for general use in Corps construction. The installation of the roof also permitted an analysis of its construction costs and a record of the construction procedures. Costs were identified in terms of material used and man hours required. For the analysis, the job was broken down in four phases: 1) removal of existing roof material and preparation of the deck; 2) application of a surface of plywood decking; 3) replacement of the butyl membranes and installation of flashing; and 4) placement of the insulation and ballast pavers. The results show that the installation time requirements compare favorably with those of conventional built-up roofs, but the butyl membrane and the pavers cause higher material costs. Advantages are in the maintainability of the roof system and in its increased life expectancy.
Date
6/1977
6/1977
Author(s)
David Schaefer
David Schaefer
Page(s)
27
27
Keyword(s)
construction costs; contract work; Fort Wainwright; loose-laid inverted roof
construction costs; contract work; Fort Wainwright; loose-laid inverted roof