GLOSSARY OF TERMS. 
^djmtabie Member.. 一 A member of a bridge the lcu^tii of which can be increased or di- 
^Hedatwill. 
Adze. — x tool for cutting timber. ( Plate XII., Fig. 8.) 
Anchor Plate or Anchor Piece. 一 A bent plate for holding* down the expanding pedestal ； 
Ute II, Fig. 12 . 
An Sie iron. — Iron rolled into the shape show n in section on Plate II., Fig. 3. 
— The intersetition of a brace with a chord or flange ； called also a panel point. 
a , of Synunetry. 一 A line dividing ail area into two parts equal and similar to each other, 
simUarly disposed to the line. 
Bap . — A piece of iron flat or square iu section. 
0f — Slope, or iucliuation, to tliQ vertical j usually measured by tbo tangent of the angle, 
60 man y inches to the foot. 
® 技 tt©r Bruce. 一 The inclined end post of a bridge. (Plate 1.) 
Beam . — A member intended to resist bending. 
Hanger. 一 A rod oi* square bar supporting a floor beam from a chord pin. (Plate I* 
M P] ate II., Fig . 10<) 
a? • Bea， ^* ,lan * er w «t*. 一 Nut 4 « on the ends of beam hangers, serving to press the floor beam 
^st the feot of the posts or against the chord heads. (Plate II., Fig. 10.) 
»»•Uiuiger Plate. — A plate placed beneath tlic end of a floor beam for the beam-hanger 
10 .) 
Bea 
t0 rest against. (Plate II., Fig* 
Bean 
Bear,n S-Pi>«#u re . — The pressure on a bearin«：. 
Bed »,1 
^ late * 一 A plate to distribute pressure upon masonry. (Plate IX, Fig. 11.) 
pj. en «tngof 0)nentt 一 The moment of a force or forces which bend or tend to bend a 
B «Hcling, StreM 
一 The stress produced in a piece by bending. 
«nt. — x frame of timber or iron, usually the former, as a bent of false-work. 
Ä - Au eye on the end of a bar, the plane of which makes an angle with the 
CUon of the length of the bar. (Plate II, Fig. 11.) 
— The slope on the end of a piece. 
0 ther ° f Ä,aterlttl * — A. list of various portions of material giving dimensions and weights, or 
quantitative measurements. 
边 ult. i — A system of one or more pulleys or sheaves, so arranged in a frame or shell as to 
2 ^ ^ P 0wer 0 f the rope passing around them, or to change its direction. (Plate XII. 
fioara 
1Q ch ÄIoa *«re. 一 The measure of timber, the unit being a piece one foot square and one 
b. m C • Timber is sold at so much per thousand feet board measure, usually written, per M. 
Öolt. ■ 
00 on 
' An iron rod with a square head at one end, and a thread and nut at the other. 
am * 'The English name for chord, 
ce. 一 Generally a strut， but sometimes the term is applied to a tie. 
(Plain = cket .〜 A knee or knee brace to connect a post or barter brace to an overhead strut 
1 - 0r P1 ate II., Fig. 11.) 
Pig s ^ Cln K Frame. - 
g * 1( 5 and 14.) 
Äuw J Öeam * ~~ A. beam uiade up of plates and angles riveted together. (Plato IT., Fig. 10.) 
c H« ， unei, 一 An assemblage of plate and angles in the form of a channel. {Plato 
- A frame to brace or stiffen parallel stringers or girders. (Plate I [り 
