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mechanics,” who do their work in blind obedience to overseeing authority and the tick of the watch of the “speed boss.” He believes that whatsoever tends to lower the initiative of the workman and retards his independence of thought along the lines of his work tends to lower his efficiency and consequently his value as a factor in the manufacturing problem.

With this view of the subject this Second Edition is confidently submitted to the manufacturer and his co-workers.

OSCAR E. PERRIGO, M. E.
July, 1917.

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Front Elevation of Shops for a Model Plant

General Plan of the Works

3. Plan of the Second Floor of Front Building

4.

Cross Section through Machine Shop

5. Cross Section through Foundry, Cupola Platform, etc.

6. Section through Cupola Platform at Right Angles to Fig. 5

7.

Cross Section through Forge Shop

8. Cross Section through Power House

9. Cross Section through Store House, Carpenter Shop, Tracks, etc.

Cross Section through Carpenter Shop

11. Slow-burning Construction, of Brick and Wood

Cast Iron Wall Plates

13. Cast Iron Pintles for Supporting Posts

14. Slow-burning Construction, of Wood only

15. One-story Machine Shop, of Brick and Wood

16. Longitudinal Section of Saw-tooth Roof Girders, of Steel Construction

17. Transverse Section of Saw-tooth Roof Girders, of Steel Construction

18. Longitudinal Section of Saw-tooth Roof Girders, of Wood Construction

19. Transverse Section of Saw-tooth Roof Girders, of Wood Construction

20. Perspective View of Machine Shop with Saw-tooth Roof

21. Vertical Section of Chimney and Foundation

Elevation of the Completed Chimney

23. Horizontal Section of Chimney, Octagonal Form

2.6. Horizontal Section of Chimney, Square Form

25. Horizontal Section showing Number of Bricks in the Square Form

26. Horizontal Section showing Number of Bricks in the Octagonal Form

27. Timber Support for Foundation Wall

28. Piling and Timber Support for Foundation Wall

29. Piling and Stone Support for Foundation Wall

30. Timber and Concrete Support for Foundation Wall

31. Benching out Ground for Foundations

32.

Battered Foundation Wall

33. Straight Foundation Wall

34. End Elevation of Engine Foundation

35. Partial Side Elevation of Engine Foundation

36. Special Pier for Machine Testing Foundation

37. Drop Hammer Foundation.

38. Cross Section of Steam Hammer Foundation

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39. Longitudinal Section of Steam Hammer Foundation

40. Vertical Section Earth and Concrete Floor

41. Vertical Section Stone and Concrete Floor

42. Flagstone Floor

43. Brick Paving

44. Simple Steel I-beam Support

45. Floor Supported by Built-up Steel Beam

46. Floor with Wooden Beams

47. A Plank properly cut from the Log

48. A Plank improperly cut from the Log

49. The Wrong Way to cut up a Log

50. The Right Way to cut up a Log

51. Quartering the Log

52. Floor Supported Entirely by Steel Beams

53. A Floor as Originally Laid

54. The Floor as Warped out of Shape

55. Heating Pipe Elbows

56. Heating Pipe Y

57. Heating Pipe Reducer

58. Branch from Main Heating Pipe

59. Plan of Heating System for Machine Shop

60. Cross Section through Machine Shop

61. Cross Section through Foundry, Cupola Platform, etc.

62. Plan of Heating System for Foundry

63. Plan of Heating System for Office Building, First Floor

64. Plan of Heating System for Office Building, Second Floor

65. Longitudinal Section through Office Building

66. Lighting Diagram, Low Windows

67. Lighting Diagram, High Windows

68. Lighting Diagram, Section through Machine Shop

69. Lighting Diagram, Cross Section through Saw-tooth Construction of Roof

70. Outside Elevation of Benedict's Shop Windows

71. Outside Elevation, of upper portion

72. Horizontal Section of Window Jamb, Sash, Glass, etc.

73. Inside Elevation showing inside Finish

74. Vertical Cross Section

75. Longitudinal Section of Boiler Setting

76. Vertical Half Cross Section and Elevation of Boiler Setting

77. Horizontal Section of Boiler Setting

78. General Plan of Power Plant

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