Office Conventional Steel Brochure - 4

Loading Summary

Criteria are based on the 2012 International Building Code (IBC) and a project location of Minneapolis, Minn.
Gravity Loading
Live Loads
Office
Roof Deck
Roof Snow
Dead Loads
Typical Floor

65 psf (including 15 psf partition loading)
100 psf
50 psf

46 psf (3 in. metal deck with
3¼ in. LW Concrete)
Roof
4 psf (3 in. metal deck)
Superimposed Dead Loads
Office
10 psf (CMEP, etc.)
Occupied Roof
45 psf (CMEP, pavers, roofing, etc.)
Unoccupied Roof
20 psf (CMEP, roofing, etc.)
Cladding
Brick Façade
770 plf
Wind Loading
Basic Wind Speed 115 mph
Exposure Category C
Drift Limit
H/500

Seismic Loading
Seismic Design Category
Seismic Importance Factor
Spectral Response Acceleration,
Short Period, Ss
Spectral Response Acceleration,
One Second Period, S1
Site Class
Building Period Coefficient, CT
Response Modification Factor, R
System Overstrength Factor, Ω0
Deflection Amplication Factor, Cd
Allowable Story Drift Coefficient
Lateral Force Resisting System
Steel Systems Not Specifically
Detailed For Seismic Resistance
Risk Category

A
1.00
0.048 g
0.027 g
D
0.02
3.00
3.00
3.00
0.02

Steel Quantity Takeoff
Suspended Steel Floor Areas

Estimated Steel Quantities
Gravity Columns
W14s
Gravity Beams
Wide Flange

Lateral Frames

Beams
Columns
Braces (HSS)
Steel not indicated in sketches (5%)

Total Area
Typical Floor
Roof

192,730 ft2
155,340 ft2
37,390 ft2

63 tons
0.65 psf
109 pieces
535 tons
5.55 psf
695 pieces
10,722 studs
354 Beams cambered between 0.75 and 2.00 inches
38 tons
0.39 psf
43 pieces
44 tons
0.46 psf
66 pieces
13 tons
0.13 psf
26 pieces
35 tons
0.36 psf
728 tons
7.55 psf
939 pieces

Notes
1. The quantities are based on centerline dimensions.
2. Steel not indicated in sketches accounts for framing not included in the estimate such as framing for openings
or various members eliminated for simplification. It does not include connection material, slab edge material or
façade attachments.
Material Specification
1. Wide flange shapes are ASTM A992
2. Rectangular HSS sections are ASTM A500 Gr. C.

AISC Office: Conventional Steel Framing

Office Conventional Steel Brochure

Table of Contents for the Digital Edition of Office Conventional Steel Brochure