What is your rise in inches?
What is your target slope? 1:18 (3.2° gentle slope) 1:15 (3.8° gentle slope) 1:12 (4.8° gentle slope) 1:9 (6.3° moderate slope) 1:6 (9.5° dynamic slope)
MOST COMMON. ADA & most municipal code recommended slope for public access & walking elderly. Manual wheelchair friendly.