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Across 5. weight distribution throughout a structure; loads caused by wind, earthquakes, and gravity, for example, affect how weight is distributed throughout a structure 7. make sure whether the ground can support the weight of the structure 8. an engineer who designs and operates systems to provide safe drinking water and to prevent and control pollution in water, in the air, and on the land 12. the outermost end supports on a bridge, which carry the load from the deck 13. oversee the actual building of the structure 19. design and analyze water treatment facilities 20. any action that tends to maintain or alter the position of a structure 22. has a deck that can be raised and lowered; 24. a curved roof enclosing a circular space; a three-dimensional arch

Down 1. characteristic of a structure that collapses or deforms under a realistic load 2. design dams and structures to control the flow of water 3. assess the impact of a proposed project on the environment 4. an engineer who plans, designs, and supervises the construction of facilities essential to modern life; public works such as dams and bridges 6. a dome composed of short, straight pieces joined to form triangles; invented by Buckminster Fuller 9. a dome composed of a series of arches, joined together with a series of horizontal rings called parallels 10. an engineer who evaluates and stabilizes foundations for buildings, roads, and other structures 11. are involved with the design and analysis of roads and highways, traffic control signals, railways, airports 13. a projecting structure supported only at one end, like a shelf bracket or a diving board 14. has a deck that rotates around a center point; 15. design such things as sports stadiums, buildings, bridges, towers, and dams 16. a bridge in which the deck moves to clear a navigation channel; 17. deck is raised with counterweights like a drawbridge 18. is raised vertically like a massive elevator 21. a rigid frame composed of short, straight pieces joined to form a series of triangles or other stable shapes 23. supported roadway on a bridge