207 — 
vary f r " tvmeiers intermediate vibration rod pins, when such are used, will 
c °Uüecti 1Xl ^ ^ or rods to 2 3 ノ ’for W rods. When bolts are used for this 
ar e 心 泊 巧 ’ ^ Qlv diameter« may vary from H f, to2 r， . The sizes of all other bolts 
6 veu m Chapter VI. 
y always placing the heavier rods next the strut, the diameter of the smaller 
employed in determining the size of pin. This table is uot to be used 
e pms passing tlirougli the end lower lateral struts, because the moments tliereon 
take S 仙 accouu t 0 f the smaller lever arms. For such pins the diameters can be 
rom ihe following table, iron pins being here applicable. 
— ■ — 
SIZE OF ROD OR BAR 
DIAMETER OF 
IRON PIN 
Round 
Square 
r 
IF 
ir 
r 
ilT 
i+r 
jr 
2 f, 
ir 
3i" 
. ボ 
ir 
3t" 
冷 
Hr 
3i" 
2*" 
パ 
W f 
括 " 
2 占 " 
3l 〃 
2|' ノ 
ず 
sr 
ijii • 
e 81ze8 of portal pins can be taken from the following table. 
SIZE OF PORTAL RODS OR BARS 
Round 
Square 
DIAMETER OF 
IRON PIN 
" // ひ « // // " " // 〃 « // ;. // " 
35 § Ja ia 55 3X- 18 « // 18 Is 3S 1 Ä- 5.8 ax- 35 
2 2 2 2 2 2 2 3 3 3 3 3 3 3 3 3 «.5 
1 W Ä r Ä 7 rs r ÄÄr J_' ls r s r as , A r 
11111111111111222 
r 7W r A ru r urM» * p Ä r Ä ^8 
31111 J1IIIOWOÄ2220ÄO» 
