Through the analysis of the stress characteristics of the circular pipecavity mushroom floor, this paper analyzes the calculating model and method of the floor slab.
通过分析圆管式空心无梁楼盖的受力特点，分析了此楼板体系的计算模型及计算方法。
2
A novel water pipe, comprising a pipe wall and a tubular body with a pipecavity, wherein the upper edge of the pipe wall (1) is axially provided with at least one groove (2).
If oil got into the production pipe from the bottom, then barriers that would have impeded its flow up the cavity around that pipe would have made little difference.