Question

for what vertical lines are in SFD​

Answer 1

Step-by-step explanation:

for the shear force diagram we usually face 3 kinds of lines , vertical , horizontal and inclined lines .

for vertical lines : these lines give indication that in this part of the structure there is a concentrated load in this point and this load change the shear effect totally on this point .

horizontal lines : these lines give indication that there is no change in the shear force on this element so the shear force value is constant in this portion .

inclined lines : these lines give indication that there is continuous change in the shear force value in the portion of the element and usually comes from distributed load .

that’s it , i hope that was helpful .