What are the standard requirements for the bearing capacity of the culvert's splayed wall foundation?

250Kpa. After the foundation excavation is completed, the bearing capacity test shall be carried out, and the bearing capacity shall be above 250 kPa. Culvert foundation is generally placed on soil or bedrock with allowable bearing capacity meeting the requirements, and the local bearing capacity is insufficient. In order to meet the design stress requirements of the foundation, the culvert foundation is replaced and compacted to improve the bearing capacity of the foundation. The bearing capacity and buried depth of foundation must meet the design requirements. Block should be layered staggered masonry, mortar extrusion, material filling full dense, no hole, plaster should be calendered without empty drum.