Power plant:

Talks and exercises: A general examination of the power plant; names, cost, use, and care of tools and equipment.

Types of steam boilers: Boiler and furnace fittings, valves (safety, globe, gate, check).

Gauges (steam, water).

Water column.

Drums (steam, mud).

Man and hand hole plates.

Whistle.

Injector and inspirator.

Grates, bridge walls, furnace, doors, damper regulators.

Boiler setting: Foundation, construction of walls, ash pit, back filling, supporting the boiler, fire-brick linings, doors, and fronts.

Boiler management: Examination; great importance of keeping the proper amount of water in the boiler at all times.

Starting the fires; necessity of slow firing of a cold boiler; light and heavy firing, and necessity for each.

Cutting into service; changing. from one boiler to another under pressure.

Trying safety appliances under steam pressure to be sure that they are in proper working order.

Preparing fires for cleaning; cleaning fires; rapid cleaning and its importance; maintaining pressure.

Priming, foaming, causes and remedies; blowing down a boiler at regular intervals and necessity thereof.

Shutting down for the night; banking the fires; precautions to be taken before leaving the boiler room at night.

Inspection for corrosion and incrustation of boilers and tubes: cleaning boilers and tubes; boiler compounds and their use. Inspection of brickwork in furnace and back connection. Importance of keeping grate bars in good condition, and ash pits clean.

Overheating, causes, effects, remedies; importance of keeping fire

sheet clean.

General repairs on boiler.

Injectors, care and management.

Horsepower of boilers and methods of determining.

Breechings, dampers, and stack connection.

Mechanical stokers.

Fuel: Coal, wood, oil. gas.

Power plant-Continued.

Pumps: Different types, high and low service; methods of packing; steam and water valves; steam and electric driven service pumps; location of boiler feed pumps and temperature of water to be pumped; feed-water heaters, open and closed types.

SECOND YEAR.

(Forty weeks. Instruction, 14 hours per week; application, 201 hours per week.)

Steam engine:

Types; construction and working principles; starting and stopping; precautions to be taken in each case.

Lubrication; quantity and quality of lubricant to be used on different bearings.

Bearings and their adjustments.

Valves, how to set slide and Corliss; lap and lead, and its effect on the engine.

Cut-off, its meaning and purpose.

Back pressure, its advantages and disadvantages.

Piston clearance, its necessity and how to determine.

Horsepower, indicated, friction, net; how to figure after assuming M. E. P. (mean effective pressure).

The governor, fly-ball, centrifugal and inertia; their duties and working principles.

Gas engines:

Types; automobile, motorcycle, marine, stationary.

General principles: Difference between the two and four cycle engine.

Compression and its importance.

Carburetor, magneto, spark coil, spark plug, and connection. Cooling systems, thermostatic, forced circulation and air; necessity for proper cooling.

Valves, push rods, and their adjustments; timing gears and importance of correct timing.

Carbon deposits and its effect on the engine.

Proper lubrication and its problems.

Electric wiring:

Making different kinds of joints and splices.

Removing insulation from wires.

Making, soldering, and taping joints.

Battery connection.

Wiring for door bells, annunciators, alarms.

House wiring, open, concealed, metal conduit work.

Location of switches, cut-outs, etc.

Study underwriters' rules.

THIRD YEAR.

(Forty weeks.-Instruction, 14 hours per week; application, 22 hours per week.)

Plumbing and heating-Talks and exercises:

Names, cost, uses, and care of tools, equipment, and material. Laying sewer pipe; cementing connections, pitch, size, and capacity; sewer branches; manholes, traps.

Cast-iron soil pipe; where and how used, sizes and weights, cutting; calking joints.

Calking and testing cellar drains and soil stacks.

Back venting; why traps are back vented and how constructed; soil and waste venting. Distinction between soil and waste for drainage.

Pitch and sizes of waste pipe; waste vents.

Preparing soldering irons; soldering-iron practice; making solder; composition; proportions for wiping solder; melting points and result of overheating.

Preparing pipe for wiping; cutting and making wiping cloths;
wiping joints of various sizes, shapes, and in various positions.
(Wiping joints is optional; may be given if time permits.)
Roughing in and setting fixtures, including connecting of stoves,
heaters, boilers, sinks, tubs, lavatories, and closets, using nickel-
plated and wrought-iron pipe; gas fittings.

Testing drainage systems with water, air, smoke, and chemicals.
Steam, hot-water, and hot-air heating. Piping buildings for

various systems of heating, such as steam, one-pipe; steam,
two-pipe; hot water, direct-indirect, high and low pressure;
hot air.

Setting and connecting radiators, making and placing coils.

FOURTH YEAR.

(Forty weeks.--Instruction, 14 hours per week; application, 223 hours per week.)

Dynamos and motors:

Types; difference between direct current and alternating current, installation.

Location and foundation requirements.

Starting and stopping appliances.

Brushes, their purpose and care.

Commutator, care, treatment for high and low bars, how to remedy; preventing shorts between bars.

Armature, its purpose and construction, heating, shorting, testing, and repairing. Field coils, series, shunt, and compound, testing for shorts and grounds; how to repair.

Reversing a motor; necessity and how accomplished.

Switchboards:

Location, care, and management; instruments mounted on board.
Care and management of circuit breakers.

Ground detectors, voltmeter and ammeters and other instru- ·
ments.

Define volt, ampere, ohm, Ohm's law, phase, cycle, and other electrical terms.

Reading of electric meters.

Refrigeration:

In schools where there are refrigerating plants students should be given instruction with reference to their installation and operation.

General review of work of previous years.

Exercises in the interpretation of plans and specifications and in making estimates of material and labor for different kinds of work, including the power plant, plumbing, heating, electric wiring.

Give special attention to the use of catalogues, tradesmen's handbooks, and trade journals.

Continue practice in repair and more difficult construction work. Require students to plan and execute work acting as advanced fore

men.

MASONRY, INCLUDING CEMENT, BRICK, STONE, PLASTERING.

FIRST YEAR.

(Forty weeks.-Instruction, 11 hours per week; application, 20 hours per week.)

Talks to students on the different features of the trade which they must master to become efficient mechanics.

Names, classification, and cost at current prices of tools and other equipment with instructions as to their use and care.

Trowels, chisels, hods, hammers, plumb rule, straightedge, pointing rule, line and pins, 2-foot rule, level, try-square, bevel, pickax, screens, shovels, scutch, sledges, beading tools, jointers, groovers, edgers, tampers, gutter tools, rollers, plasterer's hawks, darbies, floats, concrete mixer, rock crusher, pipe mold.

Teachers should give thorough instruction not only on the points above mentioned, but also on such additional subjects as may be essential to an intelligent and comprehensive understanding of the subject. Materials:

Different grades, their use and cost.

Lime, brick, tile, stone, cement, sand, gravel, plaster, hair, lath, lumber for forms and scaffolds, iron for reinforcing concrete. 15537-15-18

Talks and exercises:

Building foundations

Determining depth and width, considering character of building, climatic, and soil conditions.

Excavating to exact measurements; squaring and leveling trenches; bracing banks to prevent caving.

Making of forms; construction of footings.

Proportioning for concrete; mixing and placing concrete; wet and dry mixture; protection of concrete after placing; removing of forms.

Wall construction—

Concrete, brick, stone.

Concrete Blocks, reinforced.

Stone: Rubble, coursed rubble, ashlar, coursed ashlar.
Brick: Common, pressed.

Bonding: Why necessary, various kinds.

Mortar

Materials: Lime, sand, cement; slaking and running off lime.

Mixing mortar for brick and stone work; adding cement to lime mortar; tempering mortar.

Spreading mortar for stone or brick walls; size of joints, pointing.

SECOND YEAR.

(Forty weeks.-Instruction, 13 hours per week; application, 201 hours per week.) Concrete:

Continue practice in concrete construction in building footings, walls, piers, steps, sidewalks, floors, curbings, gutters, copings, arches, cisterns, silos, posts, slabs, girders, columns, blocks, pipe.

Effects of weather; freezing, expansion, etc.

Strength of arches and walls.

Methods and materials for reinforced concrete construction.
Road building.

Stonework:

Continue practice in stonework; laying out and cutting stone
for caps, sills, corners, jambs, steps, piers, arches, copings.
Laying and bonding stone footings, piers, various kinds of
walls, curbs.

Backing up stone facing with brick, concrete, or stone.
Openings for windows and doors.