— 249 — 
S ^ipi»ing-Biii. 一 A list of portions of a bridge, arranged in a manner to facilitate counting 
checking when the material is received after shipment. 
Stio e . — Another term for pedestal, q. v. 
Shoe Pi n Supporting Piece. — Iatermodiate bearing for a shoo pin. (Plate II., Fig. 12.) 
s，4 °° p iate. — 1'ho plute on the under side of the shoe, resting on the rollers, bed-plate, or 
Masonry. (Plate n., Fig. 12.) 
Side Bracing, 一 A. bracing for pony trusses to attueli the panels of the top chord to the floor 
eanis Prolonged, in order to fix the panel points of the ^op cliord. (Plate IX” Fig3. 16 and 17.) 
. s *ngie intersection. — The style of truss in which the diagonals do not cross the posts. It 
13 Resented in skeleton on Plate XIII. 
Sk «leton Drawing. — A drawing which shows only the centre lines of members, such as a 
agram of stresses. (Plate XIII.) 
of BrWge •一 A bridge in which the horizontal lines joining corresponding panel points 
e opposite trusses are oblique to the planes of the trusses. 
Sle <lg©. 一 A heavy hammer, or mallet. (Plate XII., Fig. 6.) 
Sl«eve iVut, — An elongated nut， the cöro at one end having a right-hand thread, and that at tlie 
er a left-hand thread. Its office is to lengthen or shorten a tension member. (Plate II., Fig. G. 
Slln S. — A loop of rope, very useful in erection for making h, hasty attachment. 
l °pe, — Inclination to a horizontal plane. 
Its ^ U，UcU Bloc k. — A block with ono side capable of being opened for the insertion of the rope. 
°^fice is to change the direction of tHe rope, (Plate XII., Pig. 3.) 
pan. — The length of a bridge from centre to centre of end pins or bearings. 
S pikes. 一 Large nails for timber work. 
Splay «~~~To spread at one end the two main portions of a member. 
Spllce . — A joint connected by means of plates. 
s PUci? Piute. — A connecting plate at a joint. (Plate IX., Fig. 7 .〉 
®P»eaa, The distance apart laterally. 
^th, 
a §Sere^ Uivet*. — Rivets are said to be staggered when each rivet of one row is opposite 
middle of the space between two rivets of the next row. 
^ 一 Dead load, q. v. 
9y Pl * 飞 te. — a plate always used at the end of a system of lacing or latticing. (Plate II” 
9 a nd 11.) 
St 
S UiTe 
ll * ,l S~AiisIe. 一 An angle iron used to stiffen the web of a beam. (Plate II.» Fig. 10.) 
s *iff euer . 〜 A piece of iron used to stiffen the web of a beam ： it may be of angle or tee 
1 ご . ( p late H., Fig. 10.) 
办物 〜 The extension or compression of a piece of material which is or lias been under 
Str 
' The internal resisting force of a piece of material which is strained. 
^ n * er, ~~ A. beam to support the track and its load between panel points. (Plate I and 
■ e • ，扔 g. 10.) 
Stii User Bvaci »»s Frame*, 一 See bracing frames, 
the - llWger Sl *Pi>oa t ov siu»if. — A shelf of bent plate or angle iron rivetted to a floor beam for • 
私 ア 0 的 of helping to support a track stringer. 
s . 〜 入 member which resists compression. 
rea^jj I>Uucliiu S* — The launching of rivot holes which have to be afterwards enlarged by 
— Bracing transverse to the planes of the trusses. Its objects are to resist 
r*. め Ure ’ and to prevent undue vibration from passing loads. (Plate I.) 
Te, 
文 e: 
of Data * — A list of the known circumstances that affect the designing of a structure. 
^ 人 screw for cutting a thread in a nut. 
r T il0il * "— A. piece of rolled iron of the section shown on Plate II., Fig. 4. 
° w * — & stress tending to elongate a body. 
