Styrofoam Board
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Field Test of a Foamed Polystyrene Board Expedient Road
Foamed polystyrene in board stock form was tested as an expedient surface insulation with XM-18 airfield landing mats as a trafficking surface. The insulation was placed on a frozen subgrade in two layers, making a total thickness of four in. The test section was constructed in May 1971 near Fairbanks, Alaska, at the USA CRREL Farmers Loop Road Facility. The section was trafficked with a load cart which applied a total wheel load of 26.2 kips on a C-130 main landing gear wheel having a tire inflation pressure of 80 psi. Four hundred passes of the load cart were made on the test section; the final level surveys showed a minimum of settlement and structural distress to the insulation boards. The maximum depth of thaw beneath the insulation did not exceed 20 in. during each of the summers of 1971 and 1972. This method of expedient road construction would provide satisfactory service throughout a summer thaw season and probably longer without deleterious effects on the subgrade and the adjacent environment.
Architectural Models
Architects' models serve as bridge between an idea and its realization. Models are one of the three means by which an architect invents and develops his design: sketch–model–computer model. No other representational form is as effective in enabling the viewer to perceive the spaces, shapes, surfaces and textures created by the architect's design — it is therefore a prerequisite in the design process. Architectural Models provides clear and comprehensible instruction explaining how design ideas can be skillfully translated into models. Some 200 black and white illustrations and, new to this edition, more than 40 extraordinary, full color photographs, provide a comprehensive visual explication of the text. In this completely revised edition, the authors convey practical basics and offer a wealth of innovative and valuable suggestions for students of architecture or graphic arts, as well as for experienced architectural model makers.
101 Projects for Your Model Railroad
-From Robert Schleicher, 2nd recipient of the Layout Design Award for Excellence.