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38
<br />Type of Stress Typc of Memtrer or Compunrnt SP� Allowablr StreSs, Table 3.3.L.J
<br />No. ksi
<br />Allowable Stresses for
<br />r�Nslor�, ;�r��i. ? � BUILDIIi1G and Similar
<br />1n � tens�on member
<br />nct seciiun 19 il�
<br />- Type Structures
<br />Rettangular tuhes, strucwral
<br />sha�+esbcntuhoutstrongaxis -� [}-� �� 2 �`� �a� f06�—T6� --T651, —T6510,
<br />-r�Ns�orv iN —�'6511
<br />BEAMS, Round or o��al tutns �
<br />extreme fibcr. � -� Z4 13Sv
<br />n�t �����on Extrusions, Sheet and
<br />Rectangular bars. �latcs. I � H
<br />shapes bent about weak axis [� �g ���, P1ate, Standard Strueturat
<br />Shapes, Rolled Rod and Bar
<br />On rivets and bofis 5 lq �gn Drawn Tube, Pipe
<br />fiEAR1NC;
<br />, On flat surface� .:nd pins 6 ''3 12�' " - . " , _
<br />Alloweble SUess,' Allowable Stress, ksi Allowable titress.
<br />Slendernesc Slenderness
<br />ksi. Limlt. S; Stendernewti Limit. S, ksi
<br />Slenderness == S, Detween S, and ti., Slenderness ?$,
<br />COMPRESSIUN � �
<br />IN COLUMNS, ly �--9.5 20.2-0.126L ��=G6 41.�
<br />i111 cotumns � + r (L.;'r)t
<br />axial, gross %
<br />section i2!� -�- 1_y� I- e5�� �'�,�
<br />* (1 /r)=
<br />-; b �- � b b �� 1.970
<br />Outstanding � � b��� g �`� 1- 5.2 23.1-0.79! �- 12 (bJr1�
<br />P,angcs and Iegv �
<br />]2'i, _ _ _ ]ZCu d = ]3i+� 1,970
<br />c:c>ME�KrssjoN __ (b1�j=
<br />F'lat plalcs with �-i r
<br />IN COMPC3NENl�S C �� ��= lb 23.1-0.25h 6= 3� 49Q
<br />Fc»h ed�es � 9 + t r (h�r!
<br />OF C(7Ll.�i�9NS, �
<br />gross Supporicd -i 6 1- 12,�� --- 12� b= ai� _a90
<br />r. ibI r}
<br />secL•nn
<br />Curved plates � R k �.2�
<br />R R R � y — 16 22.2-(l.l� 1� —= 141
<br />supponed on both �}�� 1� r �— r —__.�_.`__ 2
<br />� � � r (Rrr)(t +vRJr�3S}
<br />edges, walls of �J
<br />round or oval tubes � l2U R== 9(►� 13.5-0.50, �R ��� ___._ 3,2(xi _
<br />t r L t (7ilt)fl +~o Rit�35)'
<br />' Single web beams �'� �-b �-r K7.0(X>
<br />2 I - - 23 23.9-0.124- - = ?9
<br />bent about strnng -�- F- � j ��� 4 /u l4r,lru)Y
<br />�ixis �� � L ll'� - - - 12C` I Lo _ � 87,OIH1
<br />r l�al t 6 ��
<br />Rp Rp Rn � S K�, _ 2iS 39.3-2./ �Rn �%�� -�,1 Same �s Specifica-
<br />kound c�r a� el tuhes __ r �' � � r tion No. 10
<br />C;()MF'KE:SSION -1- 12 � _
<br />IN BE.AMS, R', N, He �ame us S 8c,�-
<br />� 14�' i= S1� 23.9-l.39v� l �= 137 �n No 10 �
<br />cxtreme `
<br />d!Ln d Le d'I_e 11,400
<br />fit�er.�ross i.-.�;— 28 -- .--_
<br />seclion
<br />Solid rectangular ' 13 �v d= l3 40.5-0.93i` d ��j �= 29 1dj!)z(L�Id)
<br />hCFi(175 - �d .
<br />I-1_ I6c d�'L,o_ .� d�I_, d, lLe 11,40(1
<br />tl' d�?H= 4t1.5.0.9�� d t V d-� (JI!)`(LoIQ)
<br />2 I �—�5- = 146 23.9-0:24 �l_eS� �o-S� ` 17(Xl 24,000
<br />Rectangulartuhcs �4 �u y /L. /„ (!•r1',Il�)
<br />�nd box seciions —�
<br />I:aS� 24,0�
<br />12G --- ll� =�AWO
<br />1 v (L•b.5 � !I ul
<br />COMPRFSSfON b� '�` -I h�b b b h 1g2
<br />Uulstaoding b_„ ' � � -= b.8 27.3-0,93- -� -- ]0
<br />IN C(JMPONENTS � ����i l�f � r�� r � � (h(t)
<br />OF BLAMS, ��+ngcs b J ISl
<br />l2`=' 12� = 15 �
<br />(componens t � thjt)
<br />�indcr uniform F lat plates with � b�---j b f- � 1 b= 22 27.;_p.?96 b� 33 S8(1
<br />compression), I both edges T � 16 �_- � � (h/t}
<br />gross sectiun �upponed 1 12�� b_ �� SSb
<br />y2� -
<br />t ht
<br />F� at p ates with _�
<br />comprrssionedge �g �=8.9 40.5-].41h h= 19 �hJ�'
<br />COMPRESSION �� � b �'� r r �
<br />IN COMPO1�EhTS free, tension �
<br />edge supported ���' b= 17r 40.5-I 41b b= 19 q'�
<br />OF Bk:AMS, t t t b!17
<br />(componem Flat plates wuh �. h h h I,S20
<br />28 - 4b 40.5_0.27� � = ;5 �h�ri
<br />under bending both edges �h ��` ag
<br />in own �;upported ' � 16�-' ---- I6� h= 45v �''�
<br />planc). t (l+/tl
<br />Flat plates wrth O 4d,
<br />gross 1 h=!07 40.5-0.117h h- 173 3,5(10
<br />section
<br />horirontal stifTener. ��T1d, 19 ZR r r r (l,i�l
<br />hoth eJges •
<br />suppnried 16C - - - 16G � = 219�i' ��
<br />ht
<br />12 �= 36 IS.[r.0.(�?-h �r = h5 39,W(I
<br />Unstfffcned T [��� 20 r r t (h;r}�
<br />SHEAR flat wcbs � 5 { ��
<br />] N W F.BS. 1 �—,�J � 7.5�� --- 7.5�' h_ �� 39,OOq
<br />! ` f,hl! �
<br />gross -�a � -+
<br />section Stiffened flal webs � ����°� �y �� � 12 ��- � �� ��
<br />}a.
<br />(i� 53,440
<br />op=o, i+D.7�o,/oz) 7.5�� ___ 75� =gq�
<br />'WHI7E BARS apply to nonwelded members �+nd tn welded members at locations farther than f.0 io. Trom a we1d. SHADED BARS I apply within 1,0 in. of a weld.
<br />___�__..J
<br />� For all thicknesscs with fillcr ailoys 5 356 or 5556. With filler alloys 4p43 or 5554, values apply to �� For all thicknesses with filler alloys 5356 or 5 556; for metai
<br />metal 3!A in. pr less in thickness; for greater thicknesses multiply aUowablc stresses by 0.8. 3/s in. �r less io thicicness with filler alloys 4043 or S5S4.
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