eri Sd me 4s ee 4 DESIGN OF A COAL STORAGE PLANT, ee OM Old Meet Thesis for the Degras of 8. §. 1 a eats to ey a Mais i9ti ( Rag t Ce THE STS LESIGN OF A CCAL STORAGE PLANT Me A. Ce P Wi PLAT ~ Oi SC BOe eure MICEL GAN STATE COLLEGE ~ RY - R. S. RUSSELL and GUY H. SHITH wart. re eS 191i ‘ghit.wmic Design of a Coal Storage Plant. at uichigan Agrichltural College Power House. -oCo- The present system of hand ling and storing coal at the .college power house has been unsatisfactory from a numoer of different standnoints, in both method and cost. The recent coal strike also denonstrated that the storasze capacity was wholly inadequate and the colleze came very near a coal famine because of its limited facilities. It is the purpose of this thesaés to recormcnd several important changes in the system of handling coal and to submit herewith a design of a suitable coal conveying and storage plant. Under the pgwesent system the coal is brought in in ordinary railroad cars and must be shoveled into the stor- age house by hand requiring the services of two or three men. (See Fig. 1.) The building is of such a shape that it is also necessary for men to work ineide the building in order to distribute the coal around tke storage house. (See Fig. 2.9 After the coal is stored only avout one-half of one percent of it can be removed without re-shoveling; all the rest must be shoveled or scraped fron the far ends of the building up to the spout in the elevator shaft. The present building is estimated, by the Engineer in charze, to hold 2,000 tons when fillec tc the roof. From the dimensions of the buildinz, however, this estimate seems oO a littic large as the cuvic contents of the vuildins only warrant a capacity of 1390 tons when completely filleca. This capacity probaosly never could ove reached vecause of the construction of the building and the labor necessary to fill it. In order to have anyyhere near a eufficient surpnly of coal on hand, it has oeen customary to pile coal alcnz the side of the tracxs opposite the storaze house. The coal thus exposed to tke action of the air anu water detcricrates rapidly and must % rerkanuled in wazons to set it to the poiler room. Fig. 3 shows a small vart of cone of the niles of coal along the railrcaau tracxs. This vile forrerly extended up to the enu of the tracks as fron tho view shown in Fig. 1. The stains cf the piles are also plainly discernivle where the coal was piled up against the ends of the pouilding (see Figs. 1 4), so that it would arpear thet as much, if not more,ccal was piled outside than was stored inside of the building. These methods necessitate entirely too much hanclgns and it is estimated that tre cost of rehanulinz is from 10 to 12 cents ror tem, which is without taking into account © the loss sustained throuch deterioration. The average }4 O coal consumption at the present time is avout 80 tons per day, with a minixnum of tons and g@ raxirn.um of 35 tons. This makes an annual consumntion of 7,300 tons at an added expense of fror. $720.99 to £876.00 per year for rehandlinz! r, The system of loading the smail industrial cars which carry anu auunn the coal into the ounxers in the nower hceuse s ulgo very vau as the slope of the coal chute is not d }-- sufficient to load the coal inte the cars excent oy shovel- ing. x e Taking all these points into con@ideration wo have designed our storazse heuse so that no shoveling will %e necessary, ull of the cecal eins loagen and unloaded ny Fis. & shows a transverse section of the rropcsed plans. The coal is durned from the rail roau car into the honpers "a" and is fed onto the line of »ucket cconvevers "pb" which travel ina treucsh in the flcor +o the end of the bduilaing where it is elevateu anu uistrisuted into the hoppers “c - c" on either side of the train shea. Coal is then taxen es needea fron the storage oins thru sates which allew the coal to run inte the small industrial cars directly belcvy. These cars are then run onto the elevatcer and raised as at resent. In the nroposed rlans, the ouiluinz is to vw 149 ft. by 3D £t., inside measurement, with a reivsht of 27 ft. from the sround. Tre flcor is 9 ft. vcelow the srounc Ca total inside hkeiszht, to neax of roof, cf o1 ft. Sin. Fig. shows a lonzitudinel secticn taken thru five different placés . “ection A-R shows the conveyer trceugh ani cencrete casing at the end of the cuiluing. This trousi is to be ueen cnough to allow the convevers to travel scslow the flcor line so as not to interfere with the industrial car traeckxs fron the elevater. The secticn is tezen theu the center of the casing which is hed oelew the storuse Looners ta allow for accessivility in case cf a doreak don. Section R-C is taken thru the storaze heonrers on the left of the truin shed (Fig. 1). There are eight of these } hoppers, the seax vetween each bein; surncrted oy.a stee box-beam restinz on reinforced concrete cclumns. C-L is a section thru the center cf the elevator shaft and motor room, the bottor. of the storage honper forrning the roof of tke latter. The main parts of the elevator shaft and surrounding foundations wilt: not oe chanzed except to accomodate the nev parts vein: put in. D-E is a section taken thru the train shed just inside the north wall. tt shows the I-oearns supnortinz the rail- road tracks over the horners into which the coal is first dumyve i. There are seven such hovpors the lensth of the ouilding, each havins an individual "feed-:r" nich suonlies the coal to the conveyers. “ection 5-F shows the stcraze hovrers on the risht hand t, 5) of which there are eicht side cf the train shed (Fig Situated the same as those on the left han. side in section The foundations of the nuildinz are to ve of concrete as is also the floor. The walls aovove zrouni ave to oe of red brick to match the pover house . The honners, doth the v track hopners und the storaze hovtpers, are to de of reinforce & & concrete with the sur columns of the same naterial. a ~ 4 , Yvyor “why ome re -~ f-, a oe aw Ve Va AD. Vo wa ot ©) ~: of stsel ansle irons placed »ack ~ to nack anu the roof coviri to be o 3 srépared céuar shingles ‘y — q e The cupcla is to be reofed with the sane material as the storaz3s house recf and sided with covrusated shevwt iron, naint- ed. The train sheu is tc ve of concrete with a reinforced concrete reof, sale ag the construction for the horper »ottorms. Fiz. 7 shows a plan cf the floscr with founaations for + 2 e 7 e e whe walls » colwnns and train shsu. The incustcial car unde~ the honne~ spouts fror the stora 53 ft. wide and 7 ft. hich are cut thru the truin shea found- e hLovcpers. Cn ae of the pote the west end an @ ft. Goov way is maue to the outs ovuildins to ullowv fo~ the emtrance of rachinery, etc. Fig. &6 is a section taxen thru H-O in riz. o und shows +he nosition of the stor: KS ESTIMATED COSTS. (TL temized ) CONC2UTL. Floors. 4" thick, 149'<39! d 20390 sq. ft. at 7¢ 7196.90 Foundations. Perimeter of the ouilding 450'. Yo. sq. ft. in vertical secticn 10' hish, 15.7 8615 cu. ft. © 354d - $3980.99 Train shed. 265' high, 149' long 1.5' thick 19500 cu. ft. © 354 -. 3670.90 Conveyer casinzs. so! hizh, 1' thick, 19' perimete 1,090 cu. ft. @ 25¢ - - 359.00 $7,900.09 RETNPORCED CCNCRiTL. Columns. Heisht 12', section 1.5'xl.5', no. 14. 378 cu. ft. @ 50¢ - - 189.99 r Hopper bottoms. 6" thick. North side. 2430 cu. ft. @ 35d - - 850.60 South side. Track honvers. 1488 cu. ft. @ 354 - - - 520.860 $1,932.00 PRICK "ORK, Walls, etc. 37' high, 1.5' thick, Perimeter 405', section 40.5 3q. £t. 16443 cu. ft. with 831 oricxs ner cu. ft. 345.3 Yoricks @ “123 ner -~ - 4143.80 and 146 The ricf is to oe 35' ¥ ! G 3} Nu 2 ‘ , Mer “ ~ + 11089 sq. ft. 9 75.99 per CG - ¢ 551.05 —! b T-beams. 6" for 2. ®. track surnorts 24" for transverse surrorts. 6" = 149' lonz, 157 nor ft. ~ , oft o 15! " go! " tt : At 35¢ nor lo. - 4 905.90 Rox-beans. 17' lonz. 7 vear.s BOF nor ft. 12' lonz. 7 beans 20% ner ft. Total of 40307 ™ 354 per 1d. 1423.0 Angle irons, in roof trussss. Lower chords 13.5= x 63! 2 unper " 12.4°% « 35.5! > a = 2 voraces o.c? x 8.5! 2 " O.oe xX 13! rach truss to cest 7157.30 lo trusses © (157.50 - - - - - 8090.00 Siding fer cuncla. (corruated sheet iron} 7!' hish, 143' leng, f no Ar 2002 sq. ft. © 43.00 ver C - - 69.99 23 ~vindows, 3'x 5! . 294 sq- ft. © 74d ner sq. ft7. yy 39.08 Rrnliore, S Feeders ~ $40.99 ner TURNSTA RLS. 2 Turn-tables © $25.00 rg ‘3 QO TNLUST2TAL TRACK. 145' track lot per ft. 17404 © $.915 *3305.99 AN 6% wude ORS 249.00 CA An Vue ew - 26.90 “CTD VBR The convever ayvstem DSTIaATS OF TOTAL COST. Concrete - - - - - - - = - - $7996.99 " reinforced - - - - - 1938.09 Rrick work - - - - ---- - 4146.00 Pcofing - -------+-- 550.00 Steel (including cunola side) 3605.99 alass - ----+-+e-+-+-+e-- 21.99 Feeadirge -----f---- + 240.90 Turn-tabpleg ----+-+-+--- 00.99 Tnuustrial tracts ----- - 20.99 Conveyers - - - - - - =- - = (5990.05 22567.70 inginccring expenses 107. 2200.00 Grand total 73 1555.00