CONSTRUCTION IN the construction process are generally two types: Slope excavation (no support excavation) and the excavation of excavation under the protection of the supporting system (with support). The former is simple and economical, but need to have a cut slope excavation conditions, ie, the p

Pit dug earthwork construction process there are two general: digging up hill (no support) and dug up the support systems for the protection in the excavation (digging up a support). The former is both simple and economical, but will need to have a slope on the dig pit conditions, that is not too d

The hole excavated for building foundation folk recipe excavates the construction craft has two kinds generally: Puts the slope to excavate (excavates without supports and protections) and excavates under the supports and protections system protection (has supports and protections to excavate).The f

Construction technology of Foundation pit excavation of earthwork in general there are two kinds: excavation of slope (without supporting excavation) and supporting system under the protection of excavation (excavation of support). Former simple and economic, subject to the conditions of slope excav

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