THE EQUILIBRIUM OF THE CIRCULAR-ARC BOW-GIRDER. 399 
U 
LIER 
HTN 
LITTLE LE ETN 
HELE 
Poa 
eS SSS ee 
\ 
eS S55 8 
AN 
YY V 
WALI 
LTT 
CETTE EL 
= 
Sl 
Bes 
eee) 
Reza 
ieee 
eee 
ced 
[pacer 
Ere 
aa 
aa) 
Sea 
Pp Pst} — 
bh, 
a 
= ww eS 
asa) 
Sam 
Sass 
ES 
ae 
Saar 
es 
eames 
ae 
eee 
Saas 
aaa 
Sa) 
Sea 
Baa 
ass 
=a 
=a 
= 
Ss 
iN 
aS 
aaa} 
=a 
[ese 
aoe | 
Bea 
[=o 
= ee aI 
{+—\f—-—_ +72 
Ss 
slg SS 
eee ee eae YN = 
S| = =D == “Go 
S| == ss as =a 
7] —_ en Gases 
=a eS Bea 
3 B= sae] 
GC) Sees a=ea 
> =a Sees ae ae 
mo a a aes SSaaeea we) 
é =) Ss ee a a 
5 PS a ar a a ed 
8 2S a re ey 
a= = 
ie 
ee ea 
at ee & || 
aaa ae 
i ee Sal 
eles 
aed ea 
el 
[o} Moree 
9 [= SS 
Eade oo | 
a 
eed 
ic cee coe el 
es a a ae 
ee Sees 
ez ee eo 
a es ae ea ea 
(0) /o° 2o- 30° 40° 50° 6o 79° 80° 90° 
— Valico R a 
Fic. 5.—Values of Ra, Ma, and Ta, for a bow-girder built in at both ends, subtending an angle 180° — 2¢, 
and with a single load W distant a° from the end A. 
TRANS, ROY. SOC, EDIN., VOL. XLVIII. PART II. (NO. 20), 60 
Ra 
Ww 
Scale for values of 
