42 fire doors have wood, hardboard, or plastic laminate faces bonded to solid wo

Question

42 fire doors have wood, hardboard, or plastic laminate faces bonded to solid wood core or a wood particleboard core. a. Hollow metal b. Metal clad The design of metal window units must provide for thermal parts a. sealants b. dividers c. Wood core d. Sheet metal 43. 1between touching interior and exterior c. plies d. breaks Fenestration refers to the design of a. WindowVS b. arches Wood windows provide better a. securitv b. insulation Metal windows used in residential construction are most often a. steel b. titanium 44. and other exterior openings of a building c. vaults d. porches 45. than metal and plastic windows c. fire resistance d. moisture resistance 46. c. aluminum d. nickel

Explanation / Answer

42. Wood core fire door.

43.Option d is correct. Thermal break A thermal break or thermal barrier is an element of low thermal conductivity placed in an assembly to reduce or prevent the flow of thermal energy between conductive materials.

44.Option a is correct. Fenestration includes windows, doors, louvres, vents, wall panels, skylights, storefronts, curtain walls, and slope glazed systems

45.Option b is correct. Wood has good natural insulation properties

46.Option c is correct. Multi-panel door systems are often made with aluminum frames to facilitate indoor/outdoor living.

47.Option a is correct.

48. Option c is correct.

1. R value of a window is inverse of U value., Hence our answer will be (1/0.33)= 3.03, Answer is 3.03

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