In this paper,the quasi-binary system is introduced,in which the multi-component system is converted into two congregated components and the multi-component rectification design processes are changed into quasi-binary′s short-cut design processes correspondingly.

In this paper a short-cut design equation that applies to plate column for close-boiling fractionation is developed based on the approximate analytical solutions of Ning Hsing Chen s equations.

The present paper has introduced a simplified design project of sprinkler systems specifically purposed for recreational places.

Based on the analysis of the factors that influence the bearing pressure of the bond-wall of brick masonry and structural concrete column subjected to axial compression,this paper gives a simplified design method of the bond-wall subjected to axial compression—y-m line method,and makes out the corresponding chart for design and calculation as well.

From some aspects such as determination of power consumption and transformer capacity the simplified design method is introduced for temporary electricity usage in construction sites.

Frugality in Residential Fit-up;

Optimization-based shortcut design for reactive distillation column;