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The Pennsylvania railroad shops at West Philadelphia
PennsJvania Railroad Shops.
113
For the consumption of one pound of anthracite 195"45 cubic feet of air is taken to be required. To conclude. The stops to be taken are: Determine the fuel required to be burnt in toto per second, next determine the area of air interstice in the grate bars. From these we find first v and then v = Next by substitution find h = Whence
1 X (
2g
V
. a c
v-=-
v
)2
.~557i xh
V
a X'005571"
•
h li . . . . . . . 0"230~:" a V
Lastly, the area of the stack is _~ ~--- 112993 ' arising from the same considerations that produce equation 3.
THE PENNSYLVANIARAILROADSHOPS AT WEST PHILADELPHIA, BY JOSEPH M. WILSON, C. E. [P. A. :Engineer, Construction Department, Pennsylvania Railroad.] (Continued from page 41.)
Store House.--Plate I gives the location of the store house, it being marked 5. It is intended for the reception of all articles which it is necessary to keep in stock for use in the shops. Plate X shows the plan of the first floor, a cross section, and a portion of the side elevation of the building. It will be noticed that the back portion of the house is used for the storage of wrought iron in bars and sheet iron, and has no cellar. The large doors to this apartment are hung on weights, and open by sliding upwards. The front on the first floor is the store room proper, and contains an office for the storekeeper, and a counter, the sides and centre of the room being conveniently fitted up with the necessary shelving, drawers, nail boxes, &c. Underneath this portion is a good cellar, having outside and inside entrances, and is used for storage of heavy articles. There is a second floor extending over the whole building, communicating by a stairway with the first floor, and having also a hatchway for rifting goods, in the floor directly over the first-story entrance. VOL, LXII.--THIRD S:ERIES.--~O. 2,--AUGUST, 1871.
15
114
Civil and Mechanical Fngineering .
The building is of brick, with substantial stone foundations, and covers an area of 3085 square feet, the details of construction being on the Plate. The floors are supported through the centre of the building by a row of cast iron columns, with wrought iron I beams extending from the columns to the side walls. The cellar columns are 8 inches at the smallest outside diameter, and of 1-inch metal. The first-floor columns are 6 inches at the smallest diameter, and also of 4-inch metal . The I beams are arranged in pairs, two beams at each position . They are 9 inches deep, weighing 70 pounds per yard, and are connected on top by a plate of boiler iron J-inch by 8 inches section . The floor joist are 3 by 12 inches section, placed one foot apart, centre to centre ; the flooring on the first story being 2-inch yellow Carolina pine, and on the second story 2-inch white pine The second floor is not lighted by windows, but by a skylight, extending along the ridge of the roof, and shown on the Plate, formed of $-inch rolled glass . Along the sides of the skylight ventilation is secured by long narrow valves, which may be opened and shut at pleasure by cords attached. The roof has a one-quarter piteh, and is hipped at the ends. The principals are placed fifteen feet apart, centre to centre, the form of truss and sizes of parts being given on the Plate . The covering is of slate, laid upon close sheeting boards and tarred felt, with galvanized nails, and the cornice to the building is of galvanized iron. The main store room is warmed by steam coils from a boiler used in beating the oil house adjoining . (To be continued .)
The North Pole Expedition .-By the time this notice appears the exploring expedition under the command of Capt. C. F. Hall will have departed upon its perilous voyage. The scientific department is under the direction of Dr. Emil Bessels, and is furnished with detailed series of suggestions as to its operations from the National Academy of Sciences . It is to be hoped that the expedition may be successful enough to warrant an extension, or at least a continuance of the liberal policy of the government in the cause of scientific inquiry . Spectrum of. Uranus .-Dr . Wm . Huggins has given to the Royal Society an account, illustrated by an engraving, of some spectroscopic observations upon the planet Uranus, from which it appears that its spectrum differs in a remarkable degree from that of the other planets .
113
For the consumption of one pound of anthracite 195"45 cubic feet of air is taken to be required. To conclude. The stops to be taken are: Determine the fuel required to be burnt in toto per second, next determine the area of air interstice in the grate bars. From these we find first v and then v = Next by substitution find h = Whence
1 X (
2g
V
. a c
v-=-
v
)2
.~557i xh
V
a X'005571"
•
h li . . . . . . . 0"230~:" a V
Lastly, the area of the stack is _~ ~--- 112993 ' arising from the same considerations that produce equation 3.
THE PENNSYLVANIARAILROADSHOPS AT WEST PHILADELPHIA, BY JOSEPH M. WILSON, C. E. [P. A. :Engineer, Construction Department, Pennsylvania Railroad.] (Continued from page 41.)
Store House.--Plate I gives the location of the store house, it being marked 5. It is intended for the reception of all articles which it is necessary to keep in stock for use in the shops. Plate X shows the plan of the first floor, a cross section, and a portion of the side elevation of the building. It will be noticed that the back portion of the house is used for the storage of wrought iron in bars and sheet iron, and has no cellar. The large doors to this apartment are hung on weights, and open by sliding upwards. The front on the first floor is the store room proper, and contains an office for the storekeeper, and a counter, the sides and centre of the room being conveniently fitted up with the necessary shelving, drawers, nail boxes, &c. Underneath this portion is a good cellar, having outside and inside entrances, and is used for storage of heavy articles. There is a second floor extending over the whole building, communicating by a stairway with the first floor, and having also a hatchway for rifting goods, in the floor directly over the first-story entrance. VOL, LXII.--THIRD S:ERIES.--~O. 2,--AUGUST, 1871.
15
114
Civil and Mechanical Fngineering .
The building is of brick, with substantial stone foundations, and covers an area of 3085 square feet, the details of construction being on the Plate. The floors are supported through the centre of the building by a row of cast iron columns, with wrought iron I beams extending from the columns to the side walls. The cellar columns are 8 inches at the smallest outside diameter, and of 1-inch metal. The first-floor columns are 6 inches at the smallest diameter, and also of 4-inch metal . The I beams are arranged in pairs, two beams at each position . They are 9 inches deep, weighing 70 pounds per yard, and are connected on top by a plate of boiler iron J-inch by 8 inches section . The floor joist are 3 by 12 inches section, placed one foot apart, centre to centre ; the flooring on the first story being 2-inch yellow Carolina pine, and on the second story 2-inch white pine The second floor is not lighted by windows, but by a skylight, extending along the ridge of the roof, and shown on the Plate, formed of $-inch rolled glass . Along the sides of the skylight ventilation is secured by long narrow valves, which may be opened and shut at pleasure by cords attached. The roof has a one-quarter piteh, and is hipped at the ends. The principals are placed fifteen feet apart, centre to centre, the form of truss and sizes of parts being given on the Plate . The covering is of slate, laid upon close sheeting boards and tarred felt, with galvanized nails, and the cornice to the building is of galvanized iron. The main store room is warmed by steam coils from a boiler used in beating the oil house adjoining . (To be continued .)
The North Pole Expedition .-By the time this notice appears the exploring expedition under the command of Capt. C. F. Hall will have departed upon its perilous voyage. The scientific department is under the direction of Dr. Emil Bessels, and is furnished with detailed series of suggestions as to its operations from the National Academy of Sciences . It is to be hoped that the expedition may be successful enough to warrant an extension, or at least a continuance of the liberal policy of the government in the cause of scientific inquiry . Spectrum of. Uranus .-Dr . Wm . Huggins has given to the Royal Society an account, illustrated by an engraving, of some spectroscopic observations upon the planet Uranus, from which it appears that its spectrum differs in a remarkable degree from that of the other planets .