Final answer:
To increase the pitch of the roof, it needs to rise at a steeper angle, for example, rising more than 6 feet for every 20 feet of horizontal distance.
Step-by-step explanation:
In order to increase the pitch of the roof, the roof needs to rise at a steeper angle. Currently, the roof has a pitch of 30%, which means it rises 6 feet for every 20 feet of horizontal distance. To increase the pitch, the roof needs to rise more than 6 feet for every 20 feet. For example, if the roof were to rise 10 feet for every 20 feet of horizontal distance, the pitch would increase.
An increased pitch typically means a steeper slope and can provide benefits such as better drainage and improved aesthetics. However, it's important to consult with a professional to determine the appropriate pitch for the specific roof.