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T.1 Description of the tutorial problem

The structure for this project is a single bay, single story steel portal frame that will be analyzed and designed.

Portal Frame model

Table 1. Basic Data for the Structure
Attribute Data

Member properties

Members 1 & 3 : W12X35

Member 2 : W14X34

Material Constants

Modulus of Elasticity : 29,000 ksi

Poisson's Ratio : 0.30

Member Offsets

6.0 inches along global X for member 2 at both ends

Supports

Node 1 : Fixed

Node 4 : Pinned

Loads

Load case 1 : Dead + Live

Beam 2 : 2.5 kips/ft downward along global Y

Load case 2 : Wind From Left

10 kips point force at Node 2

Load case 3 : 75 Percent of (DL+LL+WL)

Load Combination - L1 X 0.75 + L2 X 0.75

Analysis Type

Linear Elastic (PERFORM)

Steel Design

Consider load cases 1 and 3 only.

Parameters: Unsupported length of compression flange for bending : 10 ft for members 2 and 3, 15 ft for member 1.

Steel Yield Stress : 50 ksi

Perform member selection for members 2 and 3