1. Concrete is a cement-containing building material, which is mainly divided into two types: ordinary concrete and lightweight concrete. Ordinary concrete contains gravel, while lightweight concrete aggregates are mainly pumice, ceramic or polystyrene particles, so the compressive strength is low and the anchoring foundation is poor.
2. The masonry material is a mixture of stone and mortar. This type of installation is very common in old-fashioned buildings, where the compressive strength of stone is usually greater than that of mortar. Therefore, mechanical anchors should be installed on the wall stone as much as possible. The installation stone itself is usually the weakest link, so the actual load depends on the condition of the stone.