The beam is constructed from two boards fastened together at the top and bottom with three rows of nails spaced every 4 in. a compound beam is formed by two stacked boards of width 9 inches and thickness 3 inches. the boards are joined by rows of nails at intervals of 4 inches, and v is downward through the thicknesses. each nail can support a 560-lb shear force

What precautions should you take to prevent injuries when dealing with heavy loads?

The higher the astm grain-size number, the coarser the grain is. a)-true b)-false

Consider a large isothermal enclosure that is maintained at a uniform temperature of 2000 k. calculate the emissive power of the radiation that emerges from a small aperture on the enclosure surface. what is the wavelength ? , below which 10% of the emission is concentrated? what is the wavelength ? 2 above which 10% of the emission is concentrated? determine the wavelength at which maximum spectral emissive power occurs. what is the irradiation incident on a small object placed inside the enclosure?