the portal frame shown in the back is subjected to a dead lo

the portal frame shown in the back is subjected to a dead load DL a live load LL and a wind load D use the formulations geometric parameters and load values to:, the portal frame is shown in the first image.

STATICALLY INDETERMINATE RECTANGULAR FRAMES ctions of the reaction forces are shown in the figures of the configurations. The TABLE 13-2 signs of moments are shown in the moment diagrams. A bending moment is indicated as positive when it causes tension on the inner side of the member and compression on the outer side. Opposing moments are negative. The formulas in the table give the magnitudes of the forces and moments. Definitions e=h/L _1h (horizontal beam)/1u (vertical members) Configuration Moment Diagram Important Values RB = P 3Pa L-a 3pa L -a L -a DKC MK = 2. A ssumplions - Jead and Live Load are applied as paint lad t a n ads are he beam (a at mid span of 2. Parameter: or_re : 2 e = 0.5 DL: 20 kip / LL = 12 kip , W (wind) ; 1.0 kp

Solution

1. Reaction and moment values

a. first frame

RA =RB = 16

HA = HB = 24L/10h

MC = MD = 24L/10

MK = 56L/10

a. Second frame

RA = RB = h/L

HA = HB = 0.5

MC = MD = 0.5h

a. Maximum required allowable strength at point C = (1.2 x 20 + 12) = 36 (as per LRFD method)

b. Minimum required allowable strength at C = (20 + 12) = 32

c. required design strength = 1