Making of 1hr and 2hr firing wall: This is one of the most popular questions. Basically, building codes typically require that the structure is wall roof floor, the roof is fire-resistant.
The standards set forth by the International Building Code (IBC). fire resistant Wallis designed for a definite time period. According to 'Commercial drafting and detailing book', a one of our fire rated wall consists 2 x 4 studs spaced 16 inches from the centre of one stud to the centre of the next.