A client would like to build a temporary clinical facility that serves no post disaster function in Nausori $($cyclone region c$).$ The clinic constructed using a portal frame system. The portal frames are spaced at approximately $7\mathrm{.}5$ meters, span approximately $15$ meters and the depth of structure is $90$ meters. You are tasked with determining the wind load that is expected to be experienced on the wall and roof of the portal frame under limit state conditions for wind in the direction of $90$ into the building. It is assumed that the building is effectively sealed and has no opening windows and that the structure is situated in terrain category three conditions with a shielding parameter of $1\mathrm{.}2,$ hill shape multiplier is also to be taken as $1.$ The knee height of the structure is $5\mathrm{.}5$ meters and roof pitch is $10$ degrees.

a$)$ The Design wind speed.

b$)$ The resultant Wall Pressure coefficients.

c$)$ The resultant Roof Pressure Coefficients.

d$)$ The Design Wind loading to be experienced on the portal frame in the form of uniform distributed load.

Note: Make assumptions where necessary.