X-Braced Bent Analysis for Lateral Loads (1 Story Buildings)

For 1-Story Bent
Assuming Fully Braced, Tension-Only System

Forces and Reactions:

 ft    Brace L1 =

Member Force Sign Convention:
+ = Compression
- = Tension
Vertical Reaction Sign Convention:
Upward = Compression
Downward = Tension (Uplift)

Input Data for Drift Analysis:

Member Data
Designation Length Area
  (ft.) (in.^2)
Left Col. LC1
Right Col. RC1
Beam HB1
Brace DB1
Mod. of Elasticity, E =  ksi

LC = Left Column Segment
RC = Right Column Segment
HB = Horizontal Beam
DB = Diagonal Brace

Note: Column segments, beams,and braces are numbered from bottom to top, same as stories.


Note: Results are for joints at left side of bent, with all members (segments) assumed pinned at both ends.

Drift Analysis
Story Total Drift Drift Ratio
Number Δt (in.) (Total)
Story 1
Check of Base Reactions:
VL =   k VL = P1+P(bot)
RR = -RL =   k RR = -RL = (P1*Ht)/L
Shape Size Area (in.^2)
W Shape
C Shape
WT Shape
Rect. HSS
Round HSS


Disclaimer: This calculator is not intended to be used for the design of actual structures, but only for schematic (preliminary) understanding of structural design principals. For the design of an actual structure, a competent professional should be consulted.

‘Calculations courtesy of Alex Tomanovich, PE ’