Question

Internal pressure coefficient in a building is positive if acting from ________ and external pressure coefficient in a building is positive if acting from ___________

(a) outside to inside, inside to outside

(b) inside to outside, outside to inside

(c) outside to inside, outside to inside

(d) inside to outside, inside to outside

This question was addressed to me in an online quiz.

I'm obligated to ask this question of Determination of Earthquake Loads topic in portion Structural Analysis, Loading and Load Combinations of Design of Steel Structures

Answer 1

The correct answer is (b) inside to outside, outside to inside

To elaborate: Internal pressure coefficient in a building is positive if acting from inside to outside and external pressure coefficient in a building is positive if acting from outside to inside. The pressure depends on degree of permeability of cladding and direction of wind.