integrally stiffened structure

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Isogrid — An isogrid is a structure which has a sheet of material (usually metal) with integral metal stiffeners in a triangular pattern on one side. Isogrids are fabricated by machining material away from a thick sheet or plate of metal, leaving a… … Wikipedia
building construction — Techniques and industry involved in the assembly and erection of structures. Early humans built primarily for shelter, using simple methods. Building materials came from the land, and fabrication was dictated by the limits of the materials and… … Universalium
ZIONISM — This article is arranged according to the following outline: the word and its meaning forerunners ḤIBBAT ZION ROOTS OF ḤIBBAT ZION background to the emergence of the movement the beginnings of the movement PINSKER S AUTOEMANCIPATION settlement… … Encyclopedia of Judaism

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