Abstract. The author considers an antagonistic model of fitting cross-section squares of the supports of construction platform, where the total load on the platform is unit-normed. The generalized model under study is generated by interval uncertainties as the evaluations of the normed squares of support cross-sections. The author proves tree assertions on the projector’s optimal decisions in such model by over-evaluations in uncertainties, where the conditions of the last assertion are obtained by inducing the conditions of the two first assertions. Refs: 10 titles.

Keywords: construction platform, fitting of cross section squares, antagonistic model, overestimation of uncertainties, designer’s optimal decision.