The article inspects the intrinsic logic of node structure by the tectonic concept, moreover, this concept frame not only transplants the western constitution theory in geography , but provides the close between blind ditch of the traditional construction and the Chinese modern architecture in time, and strengthens the esthetic continuity , so that the new possibility for steel structure’s localization is provided.
Combined with practical works problems of blind ditch and underground river frequently encountered in soft soil foundation works in Wenzhou region are briefly introduced as well as related treatment methods in order to correctly treat soft soil foundation to ensure security of structure.
Experimental results in these yearsTsh-owed that after the fixed open ditches were constructed into undergrainage ditches, the rice yield increasing margin was much higher than that in the improved open ditch area and ridge and furrow cultivation area.
This paper presents calculating formula of reasonable width on rectangular sewer and an approximate formula of depth or width is also derived when width or depth is known. Several applications in engineering design are given.