FIELD: construction.
SUBSTANCE: place of maximum foundation settlement is pre-determined. In this place to the foundation surface at the height 50-60 cm from the base of foundation or above the first foundation ledge three resistance strain gages are sticked and their ohmic resistance R0 is measured. The resistance strain gages are isolated from environment, then above the resistance strain gages a bin is arranged, which is blown and dried, and again the resistance of the resistance strain gages R1 is measured. Then, into the bin a flat chamber designed as a circle segment is placed which is pre-greased with calibration epoxy, and the chamber is injected by oil up to the pressure, at which the ohmic resistance of the resistance strain gages will return from R1 to R0. Ground pressure of the basement q under the foundation base is determined by the oil pressure in the chamber by the formula. Also the pressure is monitored by values of resistance of the resistance strain gages R1 and R0 by the formula. After pressure measurement in the foundation the chamber remains in the bin for the further pressure monitoring in the base and foundation.
EFFECT: decrease of tension concentration in foundation, increase of residual bearing capacity of the foundation.
3 dwg
