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Thermal insulation

Which of the following types of thermal insulation can be blown into wall or ceiling cavities with least difficulty, but contains no adhesive properties? I. Cellulose II. Rock wool III. Vermiculite IV. Mineral wool V. Straw VI. Polyicynene Answer I, II and III are loose-fill types of insulation that can be blown. IV comes in batts, V can come in boards or bales, VI is a spray-foam that adheres to the cavity. ARE 4.0 exam prep: BS
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Efficient columns

The radius of gyration in the Y-Y axis would be equal to that in the X-X axis in an ideally efficient column. Which of the following sections are most appropriate for both heavy loads and for which many beam connections will be necessary? A. pipe column B. square tube column C. wide-flange column D. C-shape channel E. WT shapes Answer C. wide-flange column. Pipe & square tube columns are more ideal shapes, but are appropriate for light to moderate loads. The radius of gyration of wide-flange shapes can be nearly or close to equal. ARE 4.0 exam prep: SS
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