The pitch of the stair should not exceeds and should not less than
A. 40 and 25 degree
B. 55 and 60 degree
C. 90 and 95 degree
D. 100 and 110 degree
Answer:A
The pitch of the stair should not exceeds and should not less than
A. 40 and 25 degree B. 55 and 60 degree C. 90 and 95 degree D. 100 and 110 degree