Design and Assessment of a Lightweight Polymer Concrete Utility Manhole

Table 7

Simulation results for Utility Structure 1 and Utility Structure 2 with a wall thickness of 50 mm as a function of soil pressure.

Pressure (kPa)	5.5		82		160
Utility Structure	1	2	1	2	1	2
Maximum tensile stress σf (MPa)	0.24	0.24	3.6	3.6	7.0	7.0
Maximum compressive stress σc (MPa)	0.1	0.1	1.5	1.5	2.9	2.9
Maximum displacement (U) (mm)	2.8E − 02	8.8E − 02	0.42	1.3	0.83	2.6
Maximum strain (E) (mm/mm)	5.6E − 05	1.7E − 04	8.4E − 04	2.6E − 03	1.6E − 03	5.0E − 03