To draw the Shear Diagram
- VA = -1000 lb
- VB = VA + Area in load diagram
VB = -1000 + 0 = -1000 lb
VB2 = VB + 500 = -1000 + 500
VB2 = -500 lb
- VC = VB2 + Area in load diagram
VC = -500 + 0 = -500 lb
- VD = VC + Area in load diagram
VD = -500 - 400(4) = -2100 lb
To draw the Moment Diagram
- MA = 0
- MB = MA + Area in shear diagram
MB = 0 - 1000(2) = -2000 lb·ft
- MC = MB + Area in shear diagram
MC = -2000 - 500(2) = -3000 lb·ft
- MD = MC + Area in shear diagram
MD = -3000 - ½ (500 + 2100)(4)
MD = -8200 lb·ft