PRESENTED BY . >&Mo. isfo FRANKLIN INSTITUTE LIBRARY PHILADELPHIA C!aM.j?.&24„3 Book,f.M.S23 Accession..3.Z2..2. .. REFERENCE CLASS, subject to the fol/owfng regulations 7°™ UUI '’" K “‘ g “ ,Tne -rcoro hnnii. 0 mbrary Committee may , ’ ana it one or more books, belonging to a set or sets be Inst i|,'„ borrower shall replace them or make full restitution. ’ ’ ° sion L—Any sremovin S fro'" the Hall, without permis- ?„Jw? p ,nbeS -’. t Bny Wl ,lews P n Per or other property ReSgRoom. 08 ’ Sha " e " titled *° tha Privileges or idi^or'neeh^ttl }° Ue - ° f se , cond class stoek ’ shall xs«!”i4,;s° f —«%. *■? t«wt GEO. S. MORISON, Chief Engineer.. 184 LaSalle Street, Chicago. S O '93 THE NEBRASKA CITY BRIDGE. A REPORT To CHARLES E. PERKINS, President Chicago, Burlington & Quincy Railroad Company, BY GEORGE S. MORISON, Chief Engineer of the Nebraska City Bridge. subjects. I. Preliminary Narrative. II. General Description... III. Substructure. IV. Superstructure. V. Approaches. VI. Protection Work. VII. Cost.. Page 3 9 10 10 11 APPENDICES. A. List of Engineers, Employees and Contractors. B. Charter and Contract with War Department.. C. Specifications for Masonry. D. Record of Sinking Caissons. E. Time, Cost, etc., of Foundations. F. Specifications for Superstructure. G. Tests of Full Sized Eye Bars. 14 16 17 20 23 25 LIST OF PLATES. 8 . 9. 10 . 11. 12 . 13. 14 . 15. 16. 17. 18. 19. 20. General Map. General Elevation, Plan, Profile and Alignment. Piers I and IV. Piers II and III. Diagram showing Rate of Progress in Sinkiug Caissons. Record of Water Stage. 400 ft. Through Span. General Elevation and Plan. “ “ Panel Point Lo. (i “ “ 1 and 2. « “ “ 3 and 4. « “ “ 5 and 6. 6.7 32.16 12 .1 8 .80 .91 11.7 30 28 Started sand pumps at 9:15 a.m. M 7 18) , 3.8U 2.40 24 4 2! 1 20 57 27.36 8 2 .13 118.67 1.53 . 25 u , A , , . <* 4.50 120 I 33.75 .. »« A , , 5 32 w .96 2 7.60 1 3.30 24 •1 80 -- 430 4.7 22.56 1 8 9 104.83 .23 . 28 is 1 6 1 I 3.23 | * 4.50 « »Z 3.25 4 8 6 W ■ 7.60 ■ :: » * » 19.68 » .09 „ E .02 ' 2) ' 4 3o" 25 » ’ “ > • « «■» 3.25 * : • • :I ■ 7-60 1 1 2.40 A 1 -20 2.40 24 4 •4.20 6.0 28.80 12 09 10 .39 .13 ZZ 3.26 3 20 1 00 1 3.23 254 : 2 4..K “ >2.50 3.85 » .» 1 .48 7.80 ; , „. « » » It :::: . 3.5 J 09 19 ■; 8 .13 92.81 224 lg ■ ; ■ 3.23 2 00 ■ 3.25 » : » ; z s 7.00 j 8.80 A L20 . 2.40 “ 24 ... . 6. 12 09 1 .05 2 .13 63.25 ,1 •' 18.9 ••■■■. » * ■ 8.22 2 8.25 ' •« 7 -Z 1 3.80 24 80 21 4.a • 3 - 15.84 8 W .... '04 2 .13 54.48 .60 . 23 26 1 1 ■ 5U 7-60 1L30 24 80 24 4.2( . 3. 15.8 8 09 52.81 .01 28 ■ ; ; » 8 ; 2 -I j *■“ 1 2^40 24 80 24 4.2C 09 .13 56.81 * - 80 • 3.23 3 *■ 65.25 8:25 00 1 .48 7.60 1 8.30 1 2.40 1 2.40 ■M 80 J 4 24 09 148.49 4.53 15 .g 38 25 31 1 1 3.22 00 . 0 di . 9 JG 24 80 24 4.21 31.6- 12 14 2 .13 ,71.54 4.2-2 “ 39 20 fob. i 1 1 3.40 5-1 , .. ,n 1 -» JG | no 4_o, 12 13 158.61 5.57 “ 188 41 21 ' 1 “ 1 3D ' IBS iz J I z , 7.60 , 3.30 A 1.00 1 2.40 24 24 4.21 30.7 09 2 .18 ,61.20 4.25 12.2 40 25 ■ ; » ; 4 1 * 2 5. 240 ,'Z 2 4 * 8 .39 .96 3 1 s'so 1 ir> ! 240 21 80 24 ■1.2 25 « 8 .18 “ - - » « 6 '< » 1 3.45 4 1 1 2 111.25 ■» 5 15 8 52 52 02 .. ' .48 * 7.00 7.60 * E : it : “ 80 21 4.2t 4.21 ... 6C 3. g *■« 'Z 240 Stopped sand pumps at 1 p.m. 10 I 00 J 3.45 4 1 1 2 112.50 2 It 4 92 8 " * j « » I 4.21 4.21 128 123 5. 4. 11.8 8 09 8 .30 ae'31 '31 Rock. . 11 1 1 8.45 4 1 "1 8 09 191.50 .31 “ . 18 1 1 3 1 uu „ nm 9-> z .48 3 7.60 1 ' 380 21 80 24 4.21 124 8. 15.8 1 8 09 L .13 199.37 .39 . 28 ---- l 1 34^ 4 1 » 5.0 258 'ZZ 8.25 * 09 92 10 12 < « .48 ; 3 30 * 80 24 4 19.21 ! 8 » . 88 18 1 „ 4 1 „ 2 234 97 50 , 1.75 4 92 g 62 j . 1 3.60 1 8 3C 24 24 17.7 8 09 . 18889 .09 — .9 — » 75 ; 3 24 ; 09 9 70 .03 .90 ' 3.60 1 s*, H 88 4.21 ... K " ® . « Commenced sealing at 10:15 a.m. 1 00 00 • 3.45 2 » • 5.0 219 91.25 , 2 1 « 8 ■ .05 ‘ , 21 ' 8 80 " “ 18.7 .00 . 20 Stopped air pumps at 9:45 p.m. 8258.00 *148.45 *40 * *203.8 *2898.29 1- * *16.79 * .10 *-'• 8320.60 *141,90 *206.40 *,80.« *218. *897.08 j 37 1 *2.25 | *1.95 !f6ltt0.50 | 22 APPENDIX E.— Continued. TIME, COST AND MATERIALS USED IN FOUNDATIONS. PIER III. 23 GENERAL DESCRIPTION. The superstructure will consist of two through spans and one deck span. Each through span will be 400 feet long between centers of end pins, divided into fifteen panels of 20 feet eight inches each. The trusses will be 50 feet deep, and placed 22 feet apart between centers. Each span will weigh approximately 1 100 000 pounds. The deck span will be 325 feet long between centers of end pins, and divided into thirteen panels of 25 feet each, the trusses being 37 feet deep and placed 20 feet apart between centers. PLANS. Full detail plans, showing all dimensions, will be furnished by the Engineer. The work shall be built iu all respects according to these plans. The contractor, however, will be expected to verify the correctness of the plans, and will be re¬ quired to make any changes in the work which are necessitated by errors in these plans, without extra charge, where such errors could be discovered by an inspection of the plans. MATERIAL. All parts, except nuts, swivels, wall pedestal plates and ornamental work, will be of steel. The nuts and swivels may be of wrought iron ; the pedestal plates and ornamental work of cast iron. The web plates of the East Approach Span may be of wrought iron. All materials shall be sub ject to inspection at all times dnring their manufacture, and the Engineer and his inspectors shall be allowed free access to any of the works in which any portion of the material is made. Timely notice shall be given to the Engineer, so that inspectors may be on hand. Steel. Steel may be made by the open hearth or by the Bessemer process, but no steel shall be made at works which have not been in successful operation for at least one year. Steel made by the Clapp-Griffiths process will not be accepted. All melts shall be made from uniform stock low in phosphorus, and the manufacturer shall furnish satisfactory evidence to the Engineer that this class of material is being employed, it being understood that the finished product is to be one in which the phosphorus does not average more than of one per cent, and never exceeds -fa of one per cent. A sample bar f inch in diameter shall be rolled from every melt, the method of obtaining the piece from which this sample bar is rolled shall be the same for all samples, and the amount of work on this sample bar shall be as nearly as APPENDIX F. SPECIFICATIONS FOE SUPEKSTBUOTURE. practicable the same as on the finished product. The laboratory tests shall be made on this sample bar in its natural state without annealing. The laboratory tests of steel made on the sample bar shall show an elastic limit of not less than 40 000 pounds per square inch ; an ultimate strength of not less than 67 000 pounds nor more than 75 000 pounds per square inch; an elongation of at least 20 per cent, in a length of eight inches ; and a reduction of at least 42 per cent, at the point of fracture; this elongation and reduction being the minimum and not the average requirements. In a bending test the sample bar shall bend 180 degrees and close back against itself without showing crack or flaw on the outside of the curve. Steel having an ultimate strength of 60 000 pounds per square inch will be accepted for rivets. Should the contractor desire to use British steel, the quenching and bending tests specified in the Hawksbury Bridge specifications will be required, and the elastic limit requirement may be waved. Every piece of steel shall be stamped with a number identifying the melt, and a statement of the results of the laboratory tests of each melt shall be furnished by the contractor, certified by some person acceptable to the Engineer, and accom¬ panied by the tested specimens. Tests shall also be made from time to time on sam¬ ples cut from finished plates, shapes and bars, which shall show results substantially conforming to those shown by the sample tests of the same melts. All sheared edges or punched holes in steel work shall be subsequently planed or drilled out, so that none of the rough surface is ever left upon the work . u Steel for pins shall be sound and entirely free from piping. Wrought Iron. Small samples, having a minimum length of eight inches, shall show an elastic limit of at least 24 000 pounds, an ultimate strength of at least 47 000 pounds per square inch, an elongation of at least ten per cent, and a reduction of 15 per cent at the point of fracture. Cast Iron. Cast iron shall be the best quality of tough, grey iron. RIVETED WORK. All plates, angles and channels shall be carefully straightened before they are laid out; the rivet holes shall be carefully spaced in truly straight lines; the rivet heads shall be of hemispherical pattern, and the work shall be finished in a neat and workmanlike manner. Surfaces in contact shall be painted before they are put together. The dimensions given for rivets on the plans are the diameters of the rivets before driving. Power riveters shall bd direct acting machines, capable of exerting a yielding pressure, and holding on to the rivet when the upsetting is completed. The several parts of each member shall be assembled, and the holes shall be drilled, the sharp edge of the drilled hole shall be trimmed so as to make a slight fillet under the rivet head, and the pieces shall be riveted together without talcing apart. Should the contractor desire the parts may be punched with a punch at least inch smaller than the diameter of the rivet as given on the plans, working in a die only ^ inch larger than the rivet; the several parts of the member shall then be assembled and the holes reamed so that at least -fa inch of metal is taken out all around, and the sharp edge of the reamed hole shall be trimmed and the pieces riveted together as above. All rivets shall be steel; the rivet holes shall be of such size that the rivet will fill the hole before driving, and, whenever possible, the rivets shall be driven by power. All bearing surfaces shall be truly faced. The chord pieces shall be fitted together in the shop, in lengths of at least five panels, and marked. When so fitted there shall be no perceptible wind in the length laid out. The pin holes shall be bored truly, so as to be at exact distances, parallel with one another, and at right angles to the axis of the member. The holes for the rivets connecting the floor-beams with the posts and bolsters and the stringers with the floor-beams, and, in general, the holes for all rivets which must be driven after erection, shall be accurately drilled to an iron templet. The holes for rivets connecting the floor-beams with the posts shall be one inch in diameter, and the rivets of corresponding diameter. The pin holes in the vertical posts shall be truly parallel with one another and at right angles to the axis of the posts. The posts shall be straight and free from wind. FORGED WORK. The heads of eye-bars shall be formed by upsetting and forging into shape by such process as may be accepted by the Engineer. No welds will be allowed. After the working is completed, the bars shall be annealed by heating them to a uniform dark red heat throughout their entire length, and allowing them to cool slowly. The form of the heads of steel eye-bars may be modified to suit the process in use at the contractor’s works, but the form of the head adopted must be such as to meet the requirements of the tests of full-sized hars. The heads and the enlarged ends for screws in laterals, suspenders and counters, shall be formed by upsetting by a process acceptable to the Engineer. TESTS OF FULL-SIZED STEEL BARS. Ten full-sized eye-bars of sections and lengths, used in the actual work, shall be selected from bars made for the bridge, by the inspector for testing. Each of these full-sized bars shall be strained till an elongation of ten per cent, is obtained, and, if possible, broken. If broken, the fracture shall occur in the body of the bar, and shall show a uniform aud ductile quality of material. 24 APPENDIX F—Continued The contractor will be required to furnish facilities for testing full-sized bars, within a reasonable distance of his works. Should the contractor be unable to fur¬ nish such facilities, he shall be required to furnish bars at 20 per cent, larger sec¬ tions than those called for, without charge for the increased weight. The full-sized bars shall be selected from time to time as the work proceeds, the ast bar not to be selected till all the eye-bars are manufactured. The tests shall be made from time to time as the bars are selected. When three bars have been tested, the bars manufactured up to the time of the selection of these three test bars shall be accepted or rejected on the results of such tests, and the same shall be done ao-ain when three more bars are tested. In these tests, the failure of one bar to develop a stretch of eight per cent., or of the lot to develop an average of ten per cent, before breaking, shall be sufficient reason for rejecting the lot from which these bars are taken. A failure to break in the body of the bar shall not be suffi¬ cient ground for condemnation if it does not occur in more than one-third of the bars tested; but the above requirements as to elongation shall apply to the bars so breaking in the head, as well as to the others. The Engineer shall, however, exam¬ ine carefully into the cause of breakage of any bar which does not meet the require¬ ments, and, if the defect is explained, may order additional tests, and make the acceptance dependent on further results. MACHINE WORK. The bearing surfaces in the top chord shall be truly faced. The ends of the stringers and of the floor-beams shall be squared in a facer. All surfaces, so desig¬ nated on the plans, shall be planed. All sheared and punched edges shall be planed or bored out. All pins shall be accurately turned to a gauge, and shall be of full size through¬ out. Pins more than four inches in diameter shall be drilled through the axis. Pin-holes shall be bored to fit the pins, with a play not exceeding ^ of an inch. These clauses apply to all lateral connections as well as to those of the main trusses. Pins shall be supplied with pilot nuts, for use during erection, four of each size of pin. All screws shall have a truncated V thread, United States standard sizes. MISCELLANEOUS. All workmanship and material, whether particularly specified or not, must be of the best kind now in use in first-class bridge work. Flaws, ragged edges, surface imperfections or irregular shapes will be sufficient ground for rejection. Rough and irregularly finished work will not be accepted. Machine finished surfaces shall be coated with white lead and tallow before shipment. All other parts shall be given a coat of hot boiled linseed oil. TERMS. Monthly estimates will be made at the end of each month for the work done during that month. In these monthly estimates the material delivered at the con¬ tractor’s shop, but not manufactured, shall be estimated at 50 per cent, of the con¬ tract price for finished material in Chicago, and manufactured material at 75 per cent, of the contract price for finished material in Chicago. Payments will be made on or about the 15th day of the following month, according to these estimates, deducting from the amount of the same ten per cent, as security, to be held until the completion of the entire contract. No material will be paid for which does not form a part of the permanent structure. All expenses of testing shall be borne by the contractor. TIME. The trusses of the first through span shall be completed and shipped by January 1st, 1888 ; those of the second through span by January 20th, 1888, and the whole work by February 10th, 1S88. The railroad company may exact a penalty, not exceeding $150 per day, for failure to complete the work at these specified times. July 16th, 1887. 25 APPENDIX G. TESTS OE STEEL EYE-BARS. TESTS ON PULL SIZED EYE-BARS. Dimensions, Inches. Results or Mechanical Tests. Original. Nominal. Actual. Reduction Limit. Place Width. Inches. Thickness. Length C to C. Length. Width. Thickness. Width Thickness. Inches. Per Cent. inch. inch. Fracture. Original. 6 1 320.03 276 0.11 1.01 5.01 0.70 43.1 32.15 11.6 48920 74050 Body. .750 5 If 438.78 396 5.08 1.26 3.80 0.89 47.2 48.70 12.3 37290 60550 *< 5 li 438.63 396 5.08 1.26 3.92 0.92 43.6 39.60 10.0 38560 62140 ■< ' li 319.98 276 7.09 1.73 5.47 1.31 41.6 36.80 13.3 40760 06820 « 745 7 2i 320.00 288 7.11 2.11 6.76 2.01 9.4 31.20 10.8 40384 67171 " .748 7 2 i 320.00 288 7.13 2.13 5.03 1.58 41.5 38.75 13.4 41824 70627 .758 7 If 319.98 288 7.10 1.72 5.45 1.16 48.2 45.20 15.7 37585 65650 <• .761 4 f 439.23 372 4.03 0.73 3.92 0.72 4.1 17.80 4.8 41620 56190 « .754 4 f 439.88 373 4.02 0.76 3.95 0.74 4.3 7.70 2.1 39454 46141 75S 4 f 370.43 336 4.00 0.75 3.10 0.50 48.3 27.10 8.1 42830 63910 “ .755 4 1 439.33 372 4.03 0.74 3.86 0.71 8.1 33.60 9.0 41065 62966 „ .754 4 f 327.99 312 3.76 0.71 3.07 0.46 47.2 .05 0.0 50450 71800 « .754 6 1 320.08 288 6.11 1.00 29.40 10.3 49404 74440 Eye 7 If 300.08 264 7.10 1.73 4.80 2.2 34215 40300 «■ .747 7 If 259.43 228 7.02 1.71 5.33 1.05 53.4 24.60 10.8 38240 58980 Body. .747 4 f 387.99 372 3.96 0.77 3.00 0.52 47.9 55.70 15.0 40120 66200 „ 4 f 387.99 372 3.96 0.76 3.08 0.55 43.5 54.60 14.6 42010 67760 « 7 If 300.08 264 7.09 1.71 5.90 2.2 38705 47120 Eye. .752 7 2 300.03 264 7.11 2.00 6.95 1.88 8.1 11.20 4.3 33133 44900 Head. .750 4 f 437.53 372 4.02 0.75 3.02 0.44 56.0 23.40 6.3 42550 60110 Body. .760 4 f 372 4.02 0.75 3.07 0.50 49.3 43.60 11.7 42550 64830 „ .780 7 If 299.88 264 7.04 1.75 5.32 1.11 52.1 40.20 15.2 42550 71850 « 7 If 299.58 264 7.02 1.75 5.18 1.08 54.5 37.80 14.8 39695 62120 « .750 5 1 373.48 336 5.01 0.98 3.83 0.66 48.5 52.90 15.7 34480 58155 “ .740 2 300.08 204 7.01 2.01 5.12 1.22 55.8 39.10 14.8 32570 56890 “ .737 TESTS ON SAMPLE BARS FROM S, Elastic Limit. Lbs. per sq. 42810 42560 29.50 30.00 41000 41120 41440 41880 41880 29.50 29.50 27.3 28.75 25.5 28.5 24.5 41440 41440 41070 41070 41530 41230 42560 42090 43370 70360 67190 69140 69140 67910 68990 '67980 Per Cent Phosphorus. 23114 6119 6122 6122 0119 6119 Not found. 18118 18118 Not found. 23113 18101 25299 Counter. Broke in clamp marks m Counter. Broke in damp marks near screw. Retest of above after reupsetting, reannealing and removing clamp marks. Counter. Broke in grip marks near head. Retest of above after reheading, but not reannealing. Broke between grip Foreign substance in eye. [marks and eye. Retest of above, reheaded and reanncaled. Broke in flaw. / On these tests first set of eye bars made for deck span w j - rejected. Counter. Broke in short end. Long end of previous test. Abutment OB PlEH IV- Plan. Pljitft 3. C. B. & Q. R.R. PlEH I. End Elevation. Side Elevation. Plate 4. Pier HI. Pier II. C. B. <§•" Q. R. R. Plan. Side Elevation. End Elevation. 5 call: End Elevation. Side Elevation. !M_L '? 7 "? J °FbbL Pliltr 5. C. B. & Q. R. R. Diagram showing Hate ofFhdehess in Sinking Caissons Plate 6. C.B. & Q. R.R RECORD OF WATER CTAEE □ F 1 THE MISSOURI RIVER at Nebhasra City, Neb. ill JANUARY FEBRUARY MARCH APRIL j MAY JUNE JULY AUGUST SEPTEMBER OCTOBER NOVEMBER DECEMBER s a 18 S3 oc 6 13 SO 3 a 13 20 3? 3 10 17 3« 1 a IS 33 29 S 12 19 56 3 10 17 24 3 7 >4 21 28 4 11 18 25 3 18 23 3C 6 13 30 37 4 11 18 36 t— CO j J"X /A Vv a/ t* V a 16 33 M 8 13 SO 3’ 6 13 30 27 3 10 17 24 1 8 IS '22 29 6 12 19 26 3 10 17 24 3 7 14 31 26 4 II 18 26 fl 16 23 30 8 13 20 27 4 11 18 36 r.io -A 0 800 I h _- 7 1 B .5 22 29 S 12 19 28 4 .1 .8 25 1 8 IS 22 29 8 13 20 27 10 17 24 J 8 13 22 29 5 12 19 28 9 16 23 - 14 21 28 4 II IS 25 9 16 28 3C 8 13 20 27 8 10 17 24 3 10 17 24 3 7 14 91 on 12 on ,A 03 V on 4 „ ,n on 1 n ,, oo o „ ,3 OD n. 9 in ,7 04 IS 90 498 A- '■\r :!Dc 7 \ A J !P JANUARY FEBRUARY MARCH APRIL MAY JUNE JULY AUGUST SEPTEMBER OCTOBER NOVEMBER DECEMBER i Plate 7 C.B. &.Q.R. R. THROUGH SPAN-40 0 r - T 0 I - N D.TO C.END PIN3 ■22-0’ Plate 8 C. END PINS 4 Pin J Metres. : cccccuoocc.c o o o.c qSqqo loeececeeo s: c a c c Panel Points Plan. EXPANSION END FIXED END 'Timber rWSb Plate 30‘*§ 4Angles5sx5*i6 2 Angles 3 *3*'l' 1 Web Plate 504 2 Angles4* 6 * f |6'Pins Section AB Side Elevation at PiehUI Side Elevation at West Abutment. M- J “o^cPoPPo opo'-o O'-o IcJl-oPcPr 1 ° OOP o^-^d. o . 1 |o -0 d ;v 6 oP-AO o jo J J-.:kO»OlsQ*.Q P;^ My.~o o o o-o 6 /_ C.B. &Q.R.R. Plate 9 Metre THROUGH SPAN 400 FT O in C.tqHENU pins. 3 Pin 1 Bod 2"| Dia i 'o/6. i Plate 6 Pin Point 1 'Panel, Point 2 ICoverPlate 8* f-“ 4Angles 3£*5 » $ lWebplate 30 x I ;i °gli°°i 2Anx}le5 5-5*£ Jj.flgQQOQGOOQOQO yyviArtsZsi't' I RodZiDia. 2 Bars 4 ■ | o o o a | o 6 o, o'"d.a o do a too” ■OiAAiO .o'N-a'o, o ' q . d; 6 0 “ O, Q O OQ o o O ' |0 ~ o 4-o o AWIAl o o o o o| O 0 o p o 0 o o o o o A fep-iZ/A \o O '0/0^ X o o[ o o. Q„Q ^0^0^0 J lo„Q Plate 10. THROUGH SPAN, 4DO rT O 1 -" Utq G. END PINS Pin i-i-bj'-J ■ -of- ‘3 Pin 1 Bod, If Dia. 1 Bod 2fBio..' 11 Plate P/2Ak1I es Panel Point 3 6 Panel Point 4 lWetplatc 53" f lWeliplate 53*1 2Angles3'3* I o o oooo o c IRodSi'Dia. I Rod2j'di I Rodgli ROB EOT * V»ELCKE o o o o GO 5»3Hi o O O 0 L.Arq>5-3\ o o ■it 0-. o o 0.0 I I Plate 11. THHDUGH SPAN 40QT T □“ C.tdD.END PINS. f I 6 Pin lRod2i'dia. 3 Pin ' 1— 12 Panel, Point 5 _ Plate ia C. B. & Q. R R. Panel, Point 7. 3 Pin a-- ia’ —4—ia" —■! 3 Pin 1 Cover Bale 8" x i lWebplatE S3* l" 4 Angles 3 * 5*%' 2 Angles 5 x 5E , f 6 Pin /Scale: feet -O 1 Plate 15* I* 5»5fc ; i' _ o o o o o o o o o Assumed hands IJ.Lj. 3ZDD lbs-prfJ.DfDiidqE- LD. anna . JJJ.L. 30UD ■ * ■ - C.B. 6-Q.R. R. THROUGH SPAN 40U T G™ C.td C.END PINS. Bdttdm Lateral System Plato 14 C.B. &Q.R.R. DECK SPAN 325 ft O in C.toC END PINS. --25-036' -- — -.—25- OS — ICoverFIare 27>i'l 2Web Plates 18%^ 4Angles 4“ 4"• i ( 2Flafs 5-|" J ELEVATION PLAN Scale: -25-0ffi - lCoverPlrte 27 2Web Plates 18' V Plate 15. Plan FIXED END Side Elevation 3 2 5 0 Deck ^pan Panel Point L,. ROLLING END Plate So’VjjT 2-Angles 4T'4" \ IGoverplale 27” i' 2Web.plales 18”*-jP 4Angle s 4"’ 4”' j 2Flats 5”* §-” lFjod ll'sa. IRod lf-sq. Scales: ICoverplale 2 . 7 "*? 2Webplales 18"*? 4Angles4" x 4~* r 2Flals 5"* | IRod l§sq. I<- IRod l£sq. lPlate 57”* l|' Elevation Plate IK DECK SPAN -32 5 - T O 1 - C.'TO C. END 12'4’piale 4Angles3§*5. IWehplale30 * 4 Angles 3|'5 TWeBplale 30 1 4Angles3|*5 1 lWeBplale 39"’ 4Angles3|" 5”i6 lWehplale 30" f" 4Angles3| , '5 '| lWeBplale39‘f 3" Pin !§ DiamT]od P iajn.Pod flLaieralPlate Lattice 2a - 22Plate „ EAngles 4 ’ 4 '^ Lattice ?f Lattice ?; 2 V/cbpIates.12 ■ a Lattice 2 = Beales Lattice ?g> 2-7 Channels ' 351 bpld. 2-7Channels 35lbs.pYct L-sq^od /Lattice ,Lattice o o'ctlo/^ o 0 0 0 0 0 0 o O- 90 © tfiN 6 Pin 0 9 d ,0000 0) 0 0000000 O 0 O 0 O 0 , s O 0 O 0 ■s;? ‘4t 0 O 0 O 0 isl SS O 0 0 O Q Q. 0 g 0 0 4-Angles 32“ 5 *%- lWebplale 39" f* 4Artgles 3|' 5 lWeftplale 30 *f- 4Angles3|*5”il lWebplale 30”“|- 3~Pin Is Jia^od. ralPlale 2-7’Channels 351bspYd Lattice 2g*|‘' 2-7 Channels 351bs.p.Yd Plate 17. If’sqTioa C.B.&-Q.R.R. DECK SPAN 325 pt CT D. TO C.END PINS 4Angles3g“5*|- lWeiplale 3 9~ ■§" 6 Pin Scales: lsgl^od Plate!#. DECK SPAN TO SEND PINS 4 Angle a 3g x 5” lWebplate 30* '4Angles 3|* 5” ® lWebplate 30” f” 4Angles3|*5” lWebplate 39” f 4Angles3|'ir lWebplate 39” laDia.llod te-f-Plaie lE'f’Plale . -J Lateral Plale ^llPin i f-LaleralPlale ^UMpin 2-7"Channels 351bspYd j2-7’"Oiaimels 351bsjT3 Scales: Lattice 2^'I Lattice ?£»-§'’ 2 _ 7 Channels 351bspYcL 2 _ 7''Channels 351bs.p.Ya ii i fTh Lathee A “ o o 5 o o o Ouo“ ■£:<$■ Q o o' o^o ~o ~o''o~o~o''o~o o o o o o o o o o o o o o o| I o o o:'o _ 0' o O ©No 6 o o ooooooo oo 4>in ooooooo oo o o o o o olofio a 9 % °„° J.°, 0 . 0 . 0 „° o o o O O. O O; 0 0 O O; 0 G o o o o 0 O .O.,: o! 0 O O 0 o o o o o o o o o o o o wfe o 0 r 4 ^ o o o £ g %l o o o £ <; 0 o w C\J cu cu o o o q o o o o ooooooo Pk 1 CL « f &J nP £ fu 1r;= fc oogo poo ! o oooooood IIl 1900030 0 0 • o o o o I o © §!| Sljo SUNN loeRH* r = oi 1 4Angles 31* 5”s lWebplate 3 0*f MSW 4Angles 3|” 5”N j°| ° lWebplate 3O’* s jo|o Err°°i : i^b^4»°°i o ooooooo 3 0 0 0 0 0 0; o o o o o o IMnlft HI. C. B. &■ Q. R.R. DECK SPAN-325 F -O'- C.TO C.END PINS Strain Sheet u u u 3 u. u 5 u. u Top Lateral System Bottom Lateral System Plate 20. C.B. a-O.R.R. Floor — L j