Describe the relationship between $Cp$ and $L\frac{e}{d}$ in column design. $($For example: higher le$/$d results in higher Cp$)(2$ points$)$

The diaphragm shear capacity depends on the way it is constructed, sheathing, nail size, nail spacing and etc. Which of these is intended for a desired failure mode. $(2$ points$)$

Describe the primary function of a collector? $(2$ points$)$

Describe when the use of an unblocked diaphragms is not permitted $(2$ point$).$

Explain the impact of aspect ratio on the shear wall capacity. $(2$ points$)$