La Revista Annals d’Urologia és una publicació de la Societat Catalana d'Urologia que publica articles en català, castellà i en anglès que tinguin interès per a qualsevol especialista d'Urologia i altres professionals sanitaris.
A new study from the Centre for Policy Studies that conters previous claims that a large amount of methane leaks during shale drilling and production. This study says that methane leakage from shale production is seriously over-estimated.
Sensitive case of dynamic compaction for an electric sub-station in Lavatrie,...MauriceGarzon
In 1993, Hydro-Quebec requested the stabilisation of a 4.5 to 8 m thick, very loose to compact, sand formation resting over a sensitive silt and clay substratum, for the construction of the Lavatrie electrical sub-station. Dynamic compaction was requested to significantly increase the ground bearing capacity for the various structures and reduce the void ratio of the sand and its susceptibility to liquefaction under earthquake. Disturbance of the underlying sensitive clay and silt was prohibited. This paper presents the means employed by the contractor in order to define the thickness of the sand formation across the entire area and to calibrate the dynamic compaction energies needed to achieve the minimum goals specified. The test results and the performance achieved are presented and discussed.
La Revista Annals d’Urologia és una publicació de la Societat Catalana d'Urologia que publica articles en català, castellà i en anglès que tinguin interès per a qualsevol especialista d'Urologia i altres professionals sanitaris.
A new study from the Centre for Policy Studies that conters previous claims that a large amount of methane leaks during shale drilling and production. This study says that methane leakage from shale production is seriously over-estimated.
Sensitive case of dynamic compaction for an electric sub-station in Lavatrie,...MauriceGarzon
In 1993, Hydro-Quebec requested the stabilisation of a 4.5 to 8 m thick, very loose to compact, sand formation resting over a sensitive silt and clay substratum, for the construction of the Lavatrie electrical sub-station. Dynamic compaction was requested to significantly increase the ground bearing capacity for the various structures and reduce the void ratio of the sand and its susceptibility to liquefaction under earthquake. Disturbance of the underlying sensitive clay and silt was prohibited. This paper presents the means employed by the contractor in order to define the thickness of the sand formation across the entire area and to calibrate the dynamic compaction energies needed to achieve the minimum goals specified. The test results and the performance achieved are presented and discussed.
