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Two theoretical models very simple in calculation of active earth pressure of prism of three-dimensional rupture mobilised behind pile or screen in translation, were proposed. Improvements were done in order to pass from one to another, by the introduction of frustum of cone, which permits to obtain forms of prism of rupture more near to the reality. Basing on Kinematics Theorem of Drucker and Prager of limit analysis theory, there models give, in this way, two boundary-stones or superiors limits of this active earth pressure according to real value of this last. This is effectively well verified on experimental trials realized.

In this paper, I compare Theodore Schatzki’s practice theory, the existential phenomenology of Martin Heidegger upon whom Schatzki drew in its formation, and my own theory of institutional logics which I have sought to develop as a religious sociology of institution. I examine how Schatzki and I both differently locate our thinking at the level of practice. In this essay I also explore the possibility of appropriating Heidegger’s religious ontology of worldhood, which Schatzki rejects, in that project. My institutional logical position is an atheological religious one, poly-onto-teleological. Institutional logics are grounded in ultimate goods which are praiseworthy “objects” of striving and practice, signifieds to which elements of an institutional logic have a non-arbitrary relation, sources of and references for practical norms about how one should have, make, do or be that good, and a basis of knowing the world of practice as ordered around such goods. Institutional logics are constellations co-constituted by substances, not fields animated by values, interests or powers.

Because we are speaking against “values,” people are horrified at a philosophy that ostensibly dares to despise humanity’s best qualities. For what is more “logical” than that a thinking that denies values must necessarily pronounce everything valueless? Martin Heidegger, “Letter on Humanism” (2008a, p. 249).

This paper aims to provide an initial determination of the date of construction, locations and a typology of design of the pill‐boxes of the Gin Drinker's Line constructed by the colonial Hong Kong Government.

Post‐war aerial photos taken by the Royal Air Force and R.C. Huntings were examined and site visits made to locate and measure the pill‐boxes. Relevant archive materials were consulted to help interpret findings.

A total of 76 pill‐boxes, most in ruins due to post‐war destruction for obtaining their steel bars, were mapped on a 1:25,000 scale to give a good idea of the nature of the Gin Drinker's Line. The study finds that, of these, 50 have survived. The pill‐boxes predated those built in the UK to anticipate of German landing.

The paper demonstrates how aerial photos can be used for historical research and conservation planning. Though the locations of the pill‐boxes identified are subject to detailed site surveying, the basic pattern of pill‐box distribution has been identified.

This is the first attempt to map the Gin Drinker's Line and classify its pill‐boxes. The findings are useful references for the actual conservation of colonial heritage in Hong Kong as part of China, as well as for further inquiry into the military history of the Second World War.