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ARCH5023/ARCH4333 - ARCHITECTURAL STRUCTURES I

][ STEEL STRUCTURES ][
THE UNIVERSITY OF OKLAHOMA - COLLEGE OF ARCHITECTURE
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STEEL COLUMN

APPLICATIONS

Vertical Support Member:
===================
			End Supports
			Mid-Span Supports
			Interior Column
			Exterior Corner Column
			Special Columns in Building Core
			Columns as part of a Moment Frame									(braced frame)

Type:
====
		Truss-Type
		I shape
		O
		[]
		[
		built-up
		composition (steel & concrete)
		straight
		tapered

Preliminary Design:
==============
		Determine Column Grid:
				4' increments are the module of
				    most building materials
				based on
				a.) function of building
				b.) structural system
				2' for residential
				6'
				8'
				20'
				24' 
				36'
				48'
		Grid Type:
				Center to Center 
				--|-------------|-------
				Face to Face
				-| |-----------| |-----

STEEL COLUMNS SUMMARY

1. Column:	
=========
		Def. compression member

1.1 Column Shapes
==============
		round pipe O
				nominal dimension
		round & rectangular tube O []
				exact outside dimension
		"I-Beams"
				W-shapes
				M-shapes
		Built-up members
				plate welded on
				I + C + [] combinations

1.2 Slenderness & End Conditions
=========================
		PA 314 	Fig. 10.2
		K = 0.5 - 2    	theoretical
		K = 0.65 - 2.10	recommended design value



1.3 Allowable loads for columns
========================
		computation of allowable axial 
		compression load
		Table 10.1 PA 316
		Allowable Unit Stresses for Columns of A36 Steel 


1.3.a Design with tabular data
=====================
			I-shaped
		Table 10.2 PA 321 & 322 

			pipe columns
		Table 10.4 PA 321 & 322 

			tubular columns
		Table 10.5 PA 325 

			double-angle compression member
		properties only!
		Table 4.3 PA 175 

			I-shaped
		Table 10.2 PA 321 & 322 



			pipe columns
		Table 10.4 PA 321 & 322 



			tubular columns
		Table 10.5 PA 325 


			double-angle compression member
		properties only!
		Table 4.3 PA 175 



1.4 Columns with bending
====================
			moment-resistive connection
			eccentricity
			horizontal loads
				wind
				earthquake
				vehicles
			calculation P'= equivalent axial load

1.5 Joint for steel columns
===================
			attachment device = 		T
			side connection = 		I-
			moment connection = welded 	L
			column base plate  = 		I
			calculation: 
				area of base plate				A
				length & width				N x B
				thickness				t
				edge distances				m & n