STRUCTURAL AFFILIATES INTERNATIONAL(www.saii.com)

•SAI NOTE CARD 1/20/00 8:58 AM Page 1

A =Wt3.4

Ix ≈d2Wt

20

rx ≈ 45% d

ry ≈ 26% b

STRUCTURAL AFFILIATES INTERNATIONAL

STRUCTURAL STEEL

COLUMNS BEAMS

W 8x10W 10x22W 12x14W 12x16W 12x19W 12x22W 12x26W 12x30W 14x22W 14x26W 14x30W 14x34W 16x26W 16x31W 16x40W 18x35W 18x40W 18x50W 18x55W 21x44W 21x50W 21x68W 21x62W 24x55W 24x62W 24x68W 24x76W 24x84W 27x84W 30x90W 30x99

W 30x108W 30x116W 33x118W 33x130W 33x141W 33x201W 33x221W 36x135W 36x150W 36x160W 36x170W 36x182W 36x194W 36x210W 36x230W 36x245W 36x260W 36x280W 36x300

SECTION PROPERTIES

Beam Wt ≈5Md

Beam Wt ≈3.5M

d

Truss Wt ≈6Md

Truss Wt ≈4.5M

d

Wt ≈ 70% for Composite

100% Studs ≈ 1.1 Wt

100% Studs ≈ 1.25 Wt

TONNAGE

SERVICEABILITY

W8 W10 W12 W1424

6.5” 2831354048 33 40 4358 39 45 48

8” 67 45 50 5349 53 6154 58 6860 7468 827788

10010” 112

6572798796

106120136

12” 152170190210230252279305

13” 3369099

109120132

15” 145159176193211233257283311342

16” 370

Pa ≈ A (22 – 0.10 KL)r

Pa ≈ A (30 – 0.15 KL)r

psf ≈Stories

+ 73

Roof Bm d ≈ 0.5L

Floor Bm d ≈ 0.6L

Composite Bm d ≈ 0.55L

COLUMNS

NOTE: Typical Fy = 36 ksiIndicates Fy = 50 ksi

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BEAMS

•SAI NOTE CARD 1/20/00 8:58 AM Page 2