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Across 3. a curved roof enclosing a circular space; a three-dimensional arch 8. assess the impact of a proposed project on the environment 9. weight distribution throughout a structure; loads caused by wind, earthquakes, and gravity, for example, affect how weight is distributed throughout a structure 10. • the outermost end supports on a bridge, which carry the load from the deck 13. an engineer who plans, designs, and supervises the construction of facilities essential to modern life; public works such as dams and bridges 15. supported roadway on a bridge 16. a rigid frame composed of short, straight pieces joined to form a series of triangles or other stable shapes 17. characteristic of a structure that collapses or deforms under a realistic load 19. are involved with the design and analysis of roads and highways, traffic control signals, railways, airports 21. an engineer who evaluates and stabilizes foundations for buildings, roads, and other structures 22. 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 23. make sure whether the ground can support the weight of the structure 24. a bridge in which the deck moves to clear a navigation channel; 25. design dams and structures to control the flow of water

Down 1. deck is raised with counterweights like a drawbridge 2. oversee the actual building of the structure 4. a projecting structure supported only at one end, like a shelf bracket or a diving board 5. a dome composed of a series of arches, joined together with a series of horizontal rings called parallels 6. design and analyze water treatment facilities 7. a dome composed of short, straight pieces joined to form triangles; invented by Buckminster Fuller 11. design such things as sports stadiums, buildings, bridges, towers, and dams 12. has a deck that rotates around a center point; 14. has a deck that can be raised and lowered; 18. any action that tends to maintain or alter the position of a structure 20. is raised vertically like a massive elevator