An attic truss is a steeply angled truss that carves out living space between its two top chords. It is commonly used for gable-roof homes with attic living spaces. Why would gables often be used for an attic truss? Using gables allows for the use of a bottom chord.
Gables help make the construction less expensive.
The roof peak would be too steep without gables.
The living space would be extremely narrow without gables.

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?