SPECIAL ANNOUNCEMENT

MONDAY, FEBRUARY 21 Morning Session

THOMAS H. McDONALD,

Director U. S. Bureau of Public Roads will give the keynote address on

"OUR RELATION TO THE STATE."

THURSDAY, FEBRUARY 24

Gymnasium Annex

7:30 P.M. Entertainment and Smoker.

Athletic Exhibition.

Program in charge of Student Chap­ter American Association of Engi­neers.

FRIDAY, FEBRUARY 25

University Auditorium

7:30P.M. City Planning

Illustrated address on this important and interesting topic by

L. D. TILTON Personal representative of Harland Bartholomew,

City Plan Engineer, St. Louis, Mo.

ERRATA The date at the top of Page 17 should read Fri­day, February 25; Afternoon Session, 2:00 P. M.

FOREWORD

PURPOSE. The Short Course in Highway Engineering for the year 1921 has been planned to fill a long felt need for a meeting in which the detailed and specific problems of the design, construction and maintenance of roads and bridges encountered by the county superintendents of highways, state and municipal engineers, contractors and material producers of the state could be discussed and in a large measure solved. To this end the authorities of the University of Illinois and the State of Illinois Department of Public Works and Buildings, Division of Highways have formulated the following program which, it is believed, will be of mutual interest to the county superintendents of highways, the engi­neers and inspectors of the State Division of Highways, contractors and their spuerintendents, material producers, municipal engineers and others engaged in work relating to roads, bridges, and pavements in the State.

INVITATIONS. In order that the people of the State might secure the maximum benefit from this meeting the Division of Highways has arranged for its entire corps of engineers and inspectors to attend the entire session.

The County Superintendent of Highways of the respective counties are extended a special invitation to attend and participate in the discussions. It is felt that the problems which are of extreme interest to the engineers of the Division of Highways are of equal importance to the county super­intendents. In order, however, that discussion may be had of problems peculiar to the county superintendent two even­ings have been reserved for this purpose, the program to be in charge of the Superintendents themselves.

Contractors and Material Producers and members of their organizations are both cordially invited and urged to be present as it is believed a mutual understanding of the problems will make for better cooperation and better work. Represen­tatives of machinery companies are likewise invited but no exhibits of machinery will be made.

A concurrent program for city engineers and municipal officers has been arranged, in accordance with previous practice. The work in this division will be directed by the Department of Municipal and Sanitary Engineering. The program is so arranged that those attending these sections can also be present at a large part of the general program. The detailed program for these sections follows the general program

SPEAKERS. The discussion of the various topics listed in the program will be led by engineers of the Division of High­ways, and by members of the University faculty. Dis­cussion will be welcome from all in attendance, but of necessity must relate only to the topics under consideration and only constructive criticism will be received.

Special attention is called to the meeting Friday evening on City Planning. Owing to the fact that it was impossible for him to be present personally, Mr. Harland Bartholomew has· sent his assistant, Mr. L. D. Tilton, of his organi­zation in his place. Mr. Tilton is thoroughly competent to discuss the subject and all are urged to be present at this presentation of one the most important subjects of universal interest today.

The meeting on Monday morning is of especial impor­tance and the speakers are men of exceptional ability. Every­one should be present when the program begins.

PROMPTNESS. Owing to the large amount of work to be covered it is imperative that the time schedule be rigidly adhered to. All in attendance are therefore urged to be in their seats promptly at the opening of each period and co­operate in every way in carrying out the program, so as to be of maximum service to all and therefore a complete success.

In order to relieve the monotony of long meetings the morning and afternoon sessions will be divided into three fifty minute periods each with 10 minute recesses between them, concurrent with the University classes. The beginning and end of periods will be announced by bell and all are requested to govern themselves accordingly.

MEETING PLACE. Owing to the congested condition of all University Buildings, all sessions, unless otherwise noted, will be held in the Assemblv Room of the new Social Center Building of the Wesley Foundation, one block east and across the street from the Engineering Building.

Acknowledgement and appreciation is here made of the courtesy and cooperation of the Wesley Foundation of the Methodist Church for the use of this fine new building, through its director, Rev. James C. Baker.

REGISTRATION. All who attend are requested to register. Preliminary registration will take place in Room 201, Engineer­ing Building, and later at the same place, and at the meeting room.

SHORT COURSE STAFF

C. C. WILEY Ass 't. Prof. of Highway Engineering, Chairman.

University of Illinois

C. R. RICHARDs, Dean of the College of Engineering IRA 0. BAKER Professor of Civil Engineering M. L. ENGER Professor of Hydraulics and Mechanics. H. E. BABBITI Ass't. Professor of Municipal and Sanitary

Engineering. J. E. SMITH Ass't. Professor of Civil Engineering. A. R. KNIGHT Associate in Electrical Engineering. E. E. BAUER Instructor in Highway Engineering.

State Division of Highways

S. E. BRADT State Superintendent of Highways. CLIFFORD OLDER Chief Highway Engineer. FRANK T. SHEETS Engineer of Design. B. H. PIEPMEIER Engineer of Construction. FR.ED TARRANT Engineer of Maintenance. H. F. CLEMMER Engineer of Tests. G. F. BuRCH Bridge Engineer. E. M. FLEMING Acting Road Engineer. D. H. CoRNELL Superintendent of Machinery. J. M. McCoY Chief Clerk. G. N. LAMB District Engineer. H. E. SuRMAN District Engineer. M. J. FLEMING Acting District Engineer. A. H. HuNTER District Engineer. F. c. FEUTZ " " KENNETH EvANS c. M. HATHAWAY c. M. SLAYMAKER LLoYD ScHwARTz

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GENERAL PROGRAM MONDAY, FEBRUARY 21, 1921

Registration, 8:00 A. M. Morning Session, 9:00 A. M.

C. C. Wiley, Asst. Professor of Highway Engineering Presiding.

I. GENERAL TOPICS.

A. Address of Welcome._ The Relation of the College of Engineering to Highway Activities. C. R. RicHARDs, M. E., Dr. Eng., Dean of the College

of Engineering. B. Response.

CoL. CHARLES R. MILLER, Director of Public Works and Buildings of Illinois.

C. Our Relation to the State. Speaker to be announced.

D. The Purpose of this Meeting. CLIFFORD OLDER, Chief Highway Engineer of Illinois.

E. Pending and Proposed State and Federal Highway Legis­lation. S. E. BRADT, Superintendent of Highways of Illinois.

F. Illinois' Road Construction Program for 1921. CLIFFORD OLDER, Chief Highway Enginur.

G. Helpful Hints on the Engineering of English. Letters, Reports, Papers, Speeches. I. 0. BAKER, C.E., Dr. Eng., Acting Head of the Civil Engineering Department.

MONDAY, FEBRUARY 21, 1921 Afternoon Session, 2:00P.M.

II. ROAD AND BRIDGE DESIGN. The Various Activi-ties of the Bureau of Design, State Division of Highways

Frank T. Sheets. Engineer of Design, will preside and also act a.s leader of discussion on all topics under this hea.din~r. a.nd will render all decisions relo[arding the polioy of tbe division of High· ways relating to these topics. He will be assisted by the Road Engineer, Bridge Engineer. District Engineers. a.nd other engi­neers of the Division of Highways, and by members of the Uni­versity Faculty. A. The Work and Aims of the Bureau of Design. B. Surveys.

1. Selection of general location. 2. Specific location problems.

a. Selection of points of intersection of tangents. b. Avoidance of short tangents with small deflection

angles. c. Avoidance of "broken back" curves. d. Investigation of possibilities of overhead crossings

or subways at railroads. e. Crossing overflow bottoms. f. Topographic surveys in rough country.

3. Hints concerning road surveys. a. Organization of parties; single; double. b. Housing and feeding a party. c. Referencing points of intersection. d. Establishing bench marks. e. Care in cross sectioning. f. Plus stations. g. Allowable error in levels. lz. Things to avoid in handling transit and level. i. Reading the rod. j. Care of instruments and tapes. k. Check levels. /. Property lines and owners,-cies to section corners m. Grade crossings-angle-number of tracks.

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n. High water data. o. Stream bed profiles-meander of streams. p. Measurement of bridges on road. q. Measurement of bridges on stream in other

locations. r. City limits. s. Levels on intersecting roads and streets and at

ends of survey. I. Survey notes.

1. Accuracy. 2. Neatness. 3. Clearness. 4. Completeness.

u. Special notes for use in making plans. 1. Indication of probable fills and cuts. 2. Indication where cuts cannot be made. 3. Provisions for special drainage features. 4. Direction of flow and outlet for ditches and

drains. 5. Location of entrance culverts. 6. Location and extent of possible water sup-

plies. 7. Sidings and unloading points. 8. Local materials. 9. Possible externals for curves.

10. Data regarding right of way needed. v. Running curves in the field.

C. Road Plans. 1. Fitting the ground. 2. Need for being specific. 3. Omissions from contracts. 4. Length and layout of sections. 5. Importance of plans.

MONDAY, FEBRUARY 21, 1921

Evening Session, 7;30 P.M.

Room 221 Engineering Building Program in charge of County Supt's. of Highways.

TUESDAY, FEBRUARY 22, 1921

Morning Session, 9:00 A.M.

II. ROAD AND BRIDGE DESIGN-Continued.

6. Details concerning plans. a. Indicating balance points. b. New scales. c. Width of roadway and graded way. d. Drainage to be shown clearly. e. Treatment of grade crossings. f. Elimination of short tangents. g. "Broken back" curves. h. Curve practice.

1 . Showing curve data. 2. Length of curves. 3. Widening of curves. 4. Superelevation of curves. 5. Method of attaining superelevation. 6. Staking out curves. 7 . Reverse curves and tangents between

i. Showing of section lines. j. Computed bearings. k. Spoil banks and borrow pits. I. Drainage of borrow pits. m. Property owners. n. Bench marks. o. Establishing grades. p. Maximum per cent grade.

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q. Curb sections and outlets. r. Guard fence. J. Vertical curves. I. Ground line elevation figures.

D. Bridge Surveys and Reports. 1. Necessity for more thorough investigations before

preparation of plans. 2. Points to be given special consideration.

a. Size and character of drainage area. b. Efficiency of other bridges up and down stream c. Course of stream above and below bridge site. d. Slope of fall of stream bed. e. Alignment. f. Location. g. Foundations.

1. Character of excavation. 2. Foundation material. 3 . Need for piles. 4. Methods of testing for foundations

h. Water stages. 1. Low. 2. Ordinary. 3. High. 4. Overflow on road.

i. Materials. 1. Quality. 2. Source. 3. Price. 4. Haul.

j. Labor. 1. Local or imported. 2. Price.

3. Road profiles to be furnished. 4. Disposal of old bridge. 5. Common mistakes in inspection reports.

E. Bridge Plans. 1. Design of slabs. 2. Design of girders. 3 . Deck vs. thru girders. 4. Loadings for concrete and steel bridges. 5 . Length of wings. 6. Culvert headwalls. 7. Bridge floors-concrete-wood block- bituminous. 8. Drainage ditch bridges. 9. Shop inspection of steel structures.

a. Bad rivets. b. Sizes of members. c. Poor workmanship. d. Painting.

10. Hydraulics of streams and determination of waterway required.

11. Roadways. 12. Use of piles. 13. Selection of type and span length for ultimate eco-

nomy. a. Cheap materials vs. more expensive. b. Expediency vs. permanency. c. Span vs. height.

14. Common mistakes in using State standards,

TUESDAY, FEBRUARY 22, 1921

Afternoon Session, 2:00P.M.

ll. ROAD AND BRIDGE DESIGN-Continued

F. Estimates. 1. Road.

a. Labor prices for 1921 in various sections of State. b. Material prices. c. Labor efficiency for 1921.

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d. Cost of water supply. e. Cost of forms. j. Hauling, unloading, and other costs. g. Overhead charges. h. Present estimating forms. i. Need for reliable cost data.

2. Bridge. a. Methods of estimating.

1. Materials (Cost f. o. b. plus haul). cement stone sand gravel lumber steel

2. Labor items. building forms. mixing and placing concrete. bending and placing steel. excavation. cofferdams. removal of old bridge. driving piles.

b. Application of cost data. 1. Materials prevailing prices. 2. Labor reduction of cost data to man-hour

basis to allow for changing labor scale. Man-hour costs for various classes of work.

c. Derivation of estimating prices on particular materials and operations.

1. Reinforcing steel. base price. extra costs. cutting to length. freight. hauling. bending and placing. profit.

2. Structural Steel. base price. fabrication. freight. erection paint hauling. profit.

3. Cement. Difference in prices for State, county, town­

ship and municipal work. 4. Removal of old bridge.

wood. 1-beam spans. steel trusses. concrete or masonry.

5. Excavation. for culverts. dry. wet. channel changes. rock.

6. Piles. cost of timber. treatment. driving.

7. Creosoted lumber. 8. Bridge floors.

concrete. wood block bf tuminous surface.

9. Cleaning and painting old steel bridges

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10. 11. 12. 13.

G. Lettings.

Rockers. N arne Plates. Brick rail. Profit-what it covers.

1 . Preliminary work. 2. Proposals. 3. Special provisions. 4. Blue printing. 5. Notices.

H. Right of Way. 1. General policy. 2. Right of way plats.

a. Size. b. Data which must be shown.

3. Right of way descriptions. a. Methods of writing.

4. Options. a. Purpose. b. Limitations of.

S. Dedications. a. Necessary details regarding signatures. b. Recording of.

6. Borrow pit agreements. 7. Condemnation Suits.

a. Reports to Attorney General. b. Testimony.

I. Bates Experimental Road. 1. Purpose. 2. General description.

a. Location. b. General types. c, Variations in general types how selected.

3. Detailed description of sections included in general types.

a. Number of sections. b. Length. c. Cross section .•

4. Construction. a. Date of beginning. b. Equipment.

1. Unloading. 2. Hauling. 3. Storage. 4. Pumping. 5. Mixing.

c. Materials required. d. Construction features.

1. Preparation of subgradc. 2. Curbs. 3. Wire Mesh 4. Bar reinforcing . .S. Dividing planes. 6. Construction ioints. 7. Calcium chlortde. 8. Cemite cement. 9. Monolithic brick.

10. Bituminous filled brick. 11 . Macadam. 12. Concrete-base and surface.

e. Control of construction. 1. Measurements to subgrade and finished surface. 2. Control of cement. 3. Slump.

f. Work accomplished in 1920. 1 . Concrete. 2. Brick.

a. Monolithic and semi-monolithic. b. Bituminous filled.

3. Asphalt. 7

5. Methods of testing. a. Subgrade.

1. Penetration machine. 2. Impact marhine. 3. Moisture samples. 4. Pressure cells. 5. Subgrade readings thru test plngs.

a. Description of plugl'. b. Concretl!.

1. Cylinders. 2. Slabs.

c. Levels on finished pavement. d. Truck testing.

1. Methods. 6. Date of completion.

TUESDAY. FEBRUARY 22, 1921

Evening Session, 7:30P.M.

Room 221 Engineering Building

Program in charge of County Supt's. of H ighways

WEDNESDAY. FEBRUARY 23. 1921 Morning Session, 9:00 A.M.

m. ROAD AND BRIDGE CONSTRUCTION. The Activi­ties of the Bureau of Construction, Division of Highways

B. H. Piepmeier. Engineer of Construction, will preside and also act a.s leader of discussion on all topics under this heading, and will render all dicisions regarding the policy of the Dhi sion of Highways relating to these topics. He will be assis t ed by the District Engineers and other engineers of the Division of High· ways, by members of the University l<.,aculty and others. A. The Work and Aims of the Bureau of Construction. B. Statistics.

1. Progress made by State showing miles completed to date.

Brick, bituminous, concrete, stone and gravel, earth.

3. Miles built by Illinois contractors in 1919 1920 _ __ _

2. Miles built by other states in 1920~------4. Largest milage built by individual contractor ___ _ 5. Largest day's records by individual contractors __ _ 6. Largest week's records by individual contractors__ 7. Largest month's records by individual contractors. 8. Maximum theoretical output of different sized mixers. 9. Average daily output of mixers in 1920 where material

was shoveled from subgrad"'---- - - --­Total miles built by this method in 1920.

10. Average daily output of mixers when industrial equip-ment was use..._ _ _ _ _ ____ _

Total miles built by this method in 1920 11. Average daily output of mixers when batch boxes on

trucks were useu.-_____ ___ _ Total miles built by this method in 1920.

12. Average daily output of mixers when mixed concrete was hauled from central plan'-=---- ---­

Total miles built by this method in 1920. C. Duties of Inspectors.

1. Detail inspection of work. a. Sizing up the job. !J. l,ocating headquarters. c. Examination of plans.

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d. Settling of doubtful points. t. Checking B.M., P.I. and other details. j. Checking new and old right of way lines. g. Moving of poles. h. Instructing superintendent and foreman for con-

tractor regarding plans and specifications. i. .<\dditional bench marks. i. Preservin~ corner stones. lc. Preliminary grade stakes. /. Final grade and form stakes. m. Use of eye in checking grade and alignment.

2. Detailed reports. a. Daily postal card reports. b. Weekly reports.

3. Records. a. Permanent note book record.

1. progress made. 2. cars received 3. machinery received. 4. force account work.

b. Report to District Engineer on driving of piles. c. Report to District Engineer on tile drains, etc.

4. Police powers. fl. The law-publicity. b. Arrests.

5. Detours. a. Publicity regarding. b. Establishing and marking detours. c. Checking detour routes weekly. d. Seeking of public cooperation.

6. Barricades. a. Securing erection of, by con tractor. b. Methods of building barricades. c. White-washing barricades.

D. Water Supply. 1. Pipe Line.

a. Size of pipe line for different mixers. b. Expansion joints in pipe line. c. Connections in pipeline. d. Advantages of laying pipe line where it can be

covered. 2. Pump.

a. Size of pump for different sized mixers. b. Advantages of gas and steam pumps.

3. Water supply. a. Amount of water needed for mile of road. b. Necessity of clean water.

E. Subgrade. 1. Exposing of corner stones, etc. 2. Reasons for building subgrade wider than pavement. 3. Reasons for draining subgrade during construction. 4. Advantages of subgrade machines (ready-made)

(home-made) 5. Scarifiers.

a. Advantages of scarifiers attached to rollers. b. Advantages of heavy scarifiers to be pulled by

tractors. c. Advantages of light scarifiers that will stay in

ground on account of their type of construction rather than weight.

d. Most suitable power for scarifiers. 6. Purpose of oiling subgrade.

a. Width of subgrade that should be oiled. b. Benefits of an oiled subgrade. c.. Cost of oiling subgrade.

7. Advantages and disadvantages of hauling over sub­grade.

8. Advantages and disadvantages of dumping material on su bgrade.

9. Purpose of wetting subgrade before placing concrete.

9

10. Advantages of true and uniformly compacted sub. grade.

11. Advantages of rolling in porous material such as stone, cinders, gravel.

12. Tiling. a. Position of single line tile. b. Position of double line of tile. c. Size of various tile, depth, etc.

F. Roller. 1. Size of roller.

a. Advantages of 10 foot 3 wheeled type; purpose and places where it can be best used.

b. Advantages of the tandem roller; purpose and places where it can be best used.

c. Weight of various types of rollers for subgrade for macadam and gravel road construction.

d. Type of rollers or tractors suited for rolling fills. e. Advantages and disadvantages of tractors pulling

horse rollers. f. Advantages of rolling full width of road. g. Purpose of rolling one foot outside of side forms

in pavement construction. G. Forms for Pavement.

1. Advanta!<es and disadvantages of steel forms. 2. When do~steel forms become unsatisfactory for use. 3. When are forms lined up vertically and horizontally. 4. How to determine when forms settle under finishing

machine. 5. Weight of steel forms suitable for use in connection

with tamping and finishing machines. 6. Use of standard steel shapes for forms. 7. Use of wood side forms. 8. Most suitable forms for various degrees of curves. 9. Advantages of oiling side forms.

a. Cost of oiling side forms. b. Frequency of oiling side forms.

H. Mixing. 1. The chief pu::pose of a concrete mixer. 2. The advantage& of a uniform one inch slump concrete. 3. The advantages of mixing one minute for all types

of mixers. 4. The advantages of requiring a mechanical timing

device for all mixers. 5. The advantages of and purpose of a uniform mix in

all concrete. I. Charging the Mixer.

1. Advantages and disadvantages of charging skip with wheel barrows.

2. How to determine when wheelbarrows have proper load.

3. How to determine when proper number of wheel­barrow loads have been placed in skip.

4. Advantages and disadvantages of conveyor machines on subgrade.

5. Advantages and disadvantages of charging skip by batch boxes on trucks.

a. Advantages of side dump truck bodies. b. Advantages of rear end dump bodies on trucks.

6. Advantages and disadvantages of charging mixer by use of derricks attached to skip.

a. By use of derricks attached to independent power on mixer.

b. Advantages and disadvantages of derricks.

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WEDNESDAY, FEBRUARY 23, 1921

Afternoon Session, 2:00P.M.

m. ROAD AND BRIDGE CONSTRUCTION-Cont'd.

J. Central Mixing Plants. 1. Advantages and disadvantages of central mixing

plants. a. The maximum time that mixed concrete may be

held before incorporated in the pavement. b. Maximum distance mixed concrete may be hauled

by truck. c. Advantages and disadvantages of hauling mixed

concrete by industrial road. 2. Size of mixers suitable for central plants. 3. Advantages of uniform mix at central plants. 4. Type of dump body best suited for hauling mixed

concrete. 5. When is mixed concrete unsatisfactory for use in the

pavement. 6. Retempering of mixed concrete on the job. 7. Extra work required to finish concrete delivered by

trucks. 8. Advantages of field central mixing plants.

K. Finishing. 1. Amount of tamping ordinarily required to finish

pavement. 2. Method of tamping and finishing around curves and

around steep grades. 3. Purpose and use of finishing machines.

a. Check crown on finishing machine templet. b. Causes for break-down in finishing machines. c. Chief causes of uneven surface in pavement result­

ing from use of finishing machine: d. Final tamping and belting with finishing machine. e. Check final alignment and grade of side forms

before final finishing with machine. j. Care of finishing belt on machine. g. Importance of keeping top of forms and wheels

clean when finishing. h. Adjustment of tamper on machine to secure

uniformity. 4. Necessity of hand roller and belts on the job.

a. Size and weight of hand roller. b. Size, weight, and length of belts. c. Advantages of use of 'hand roller and belt on

super-elevated curves. 5. Purpose of edging pavement. 6. Purpose of edging construction joints. 7. Advantages of use of ten foot straight edge. 8. When to check for high and low spots in finished

surface. 9. When to check for high and low construction joints.

10. When and how to remove high spots in surface of pavement.

L. Construction Joints. 1. How to construct a satisfactory construction joint.

a. Vertical and horizontal alignment of joint. b. Edging of joint. c. Checking joint for high or low position.

2. Protection of edges of pavement adjacent to con­struction joints.

3. Filling of construction joints with bituminous material. 4. When and how noon-day construction joints should

be mq.de. M. Curing.

1. Purpose of keeping pavement moist for two weeks according to specification.

2 Advantages of curing pavements with earth and water. 11

3. Time pavement should be covered with earth and water.

4. Advantages of curing pavement with straw and water. a. Depth of straw on pavement.

5. Advantages of protecting and curing edges of pave­ment.

6. Advantages of curing pavement by ponding method. 7. Cost of curing pavement by different methods indi­

cated above. 8. Amount of water required for curing purposes. 9. Advantages and disadvantages of curing with spray-

ing method. 10. When should pavement be covered with canvas. 11. When should canvas be kept moist. 12. Advantages of covering pavement with canvas cover­

ing frames. 13. Methods of protecting surface from frost and freezing. 14. The use of bituminous blanket in curing concrete.

a. Cost of curing by use of asphalt. b. When should asphalt blanket be applied.

15 . Advantages and dis advantages of curing pavement by the use of calcium chloride.

a. Cost of curing with calcium chloride. b. Amount of calcium chloride used per square yard. c. Time of applying calcium chloride. d. Effect of calcium chloride incorporated in mix.

N. Monolithic Brick Pavements. 1. Base.

a. Consistency of base. b. Tamping base. c. Finishing base. d. Mortar bed.

2. Brick. a. Laying brick-wetting. b. Rolling brick. c. Culling brick.

3 . Grouting brick. a. Proportions for grout. b. Consistency of grout. c. Applying grout.

4. Curing. 0. Bituminous Filled Brick Pavements.

1. Base. a. Consistency of base. b. Tam ping base. c. Finishing base.

2. Cushion. 3. Brick.

a. Laying brick. b. Rolling. c. Culling.

4. Applying bituminous filler. P. Bituminous Concrete Pavement.

1. Base. a. Consistency of mix. b. Proportions of mix. c. Tamping and finishing. d. Curing.

2. Binder course. a. Proportions of. b. Temperature of. c. Control tests. d. Application. e. Rolling.

3. Top Course. a. Proportions of. b. Temperature of. c. Control test. d. Spreading. e. Rolling.

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WEDNESDAY, FEBRUARY 23 1921

Evening Session 7;30 P, P. Room 221 Engineering Hall

Meeting of Engineers and Inspectors of the Division of Highways.

THURSDAY, FEBRUARY 24, 1921

Morning Session, 9:00 A. M.

Q. Gravel Roads. 1. Advantages of feather edge construction. 2. Advantages of trench construction. 3. Per cent of clay binder desirable for gravel road

construction. 4. Desirable crown for different widths of gravel roads. 5. Rolling of gravel roads during construction. 6. Grading of gravel roads during construction.

R. Macadam Roads. 1. · Standard methods of construction of macadam roads 2. Advantages of bituminous filled macadam roads. 3. Type of rollers suited for macadam road construction.

S. Earth Roads. 1. Suitable crown .and width for earth road construction. 2. Advantages and disadvantages of different machines

used for earth work. 3. Advantages and disadvantages of oiled earth road

construction. T. Shoulders and Side Ditches.

1. When are shoulders completed a. Slope of shoulders. b. Alignment of outer edge of shoulders. c. Time and purpose of seeding shoulders.

2. Side ditches. a. Purpose of side ditches. b. Standards cross sections of side ditches. c. Back slope on side ditches.

3. When should hand work be required on back slope of side ditches.

4. Advantages of finishing side ditches before construct­ing entrance and intersecting road culverts.

5. Places where vertical drains should be established in side ditches.

U. Cement Sacks. 1. Cement records. 2. Check number of cement sacks used daily. 3. See that cement sacks are properly cleaned.

V. Payment Estimates. 1. Record of estimates allowed. 2. Allowing of extras-statement of work done. 3. Force account statement. 4. Semi-final estimates.

a. Release from contractor's bondsmen. b. Affidavit from contractor concerning bills.

5. Promptness. W. Acceptance of Work.

1. When is a road or bridge ready for acceptance. 2. Acceptance of portions of contract sections. 3. Acceptance of certified check in lieu of unfinished

work. X. Bridge Construction.

1. Staking out lines and elevations. 2. Cribbing and cofferdams.

a. Strength. b. Size. c. Length of sheeting. d. Types.

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e. Single sheeting. f. Puddle wall. g. Wakefield. h. Steel.

3. Drainage of excavation. a. Provision for a sump. b. Tile or box drains to sump (in gravel and sand). c. Seal coat under water.

4. Piling. a. Treated or untreated. b. Length. c. Spacing and arrangement. d. Penetration. e. Cut-off elevation. f. Driving-drop-steam-jet. g. Concrete-piles or pillars.

5. Materials for concrete. a. Protect from floods. b. Storage.

6. Reinforcing steel. a. Bending. b. Cleaning. c. Placing-chairs or concrete-blocks-spacers­

wires. d. Rust removal.

7. Forms. a. Matched and surfaced lumber. b. Studding. c. Bracing forms. d. Wires and spreaders. e. Molding for corners and edges. f. Alignment.

8. Falsework. a. Mud-sills. b. Concrete footings. c. Piles. d. Bracing. e. Camber. f. Provisions for settlement.

1. wedges. 2. jacks. 3. excess camber.

9. Placing concrete. a. Mixing.

1. proportions. 2. time. 3. water. 4. consistency.

b. Placing. 1. horizontallayers. 2. spading. 3 . surrounding reinforcing steel. 4 . retempering. 5. alignment of forms. 6. finish on top surfaces-floor slabs, walls, etc. 7. tops of wing walls.

10. Construction joints. a. Location and direction. b. Lai tance-mud seams. c. Preparation of joints before resuming work.

1 . roughing up. 2 . grooves. 3 . one-man stone. 4. steel protruding.

11. Curing. a . Protection from evaporation. b. Straw, earth, ponding.

12. Freezing weather. a. Heating materials.

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b. Protection in forms. c . Detection of frozen concrete.

13. Removal of falsework. a. Time. b. Patching.

THURSDAY, FEBRUARY 24, 1921

Aft~rnoon Session, 2:00P.M.

IV. ROAD AND BRIDGE MAINTENANCE. The Vari­ious Activities of The Bureau of Maintenance, Division of Highways

Fred Tarrant, Engineer of Maintenance, will preside and also act as leader of discussion on all topics under this headina-. and will render all dlcisions regarding the policy of the Division of Hia-h ways relating to these topics. He will be assisted by the District Engineers and other engineers of the Division of High­ways. by members of the University Faculty, County Superin­tendents of High ways, and others.

A. Administration and Accounting. 1. Svstem of records of costs. a: Importance of records.

b. Necessity of accurate information from field men. 2. Payments for maintenance labor and materials.

a. By vouchers. b. By checks on banks.

1. Results of this method. 2. Suggested improvements. 3. Overdrafts. 4. Information to be shown @In receipt attached

to checks. c. Instructions concerning bills and receipts.

3. I)istribution of charges. a . General maintenance .. b. District charges. c. Labor. d . Equipment. e. Gas and oil.

4. Combination of sections. 5. Trucks.

a. Assignment of numbers. b. Operating expense. c. Emergency repairs and expense.

6. Maintenance cost data. a. Pavements by types. b. Shoulders and ditches. c. Bridges and culverts.

B. Maintenance of Brick and Concrete Pavement. 1. Joints and cracks.

a. Cleaning. b. Filling. c. Covering.

2. Material. a. Asphalt.

1. Heating. 2. Penetration.

b. Tar. 1. Heating.

C. Maintenance of W. B. Macadam and Gravel. 1. Repair of small holes. 2. Materials required. 3. Application of new material. 4. Surface treatment with oil. 5. Use of drag for maintaining gravel roads.

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Entertainment in charge of the student chapter of the American Association of Engineers.

Smokes Talks Music Athletic stunts Basket Ball

FRIDAY, FEBRUARY 25, 1921

Morning Session, 9 :00 A.M

IV. ROAD AND BRIDGE MAINTENANCE-Continued.

D. Maintenance of Bituminous Surfaces. 1. Patching. 2. Surface treatment. 3. Materials. 4. Equipment.

E. Maintenance of Shoulders and Ditches. 1. Metal.

a. Material required. b. Application of new material.

2. Earth shoulders and ditches. a. Use of drag, grades, slips. b. Ruts. c. Seeding. d . Adding sand or cinders.

F. Maintenance of Earth and Oiled Earth Roads. 1. Methods.

a. Equipment. b. Tile drainage. c . Conditions suitable for application of oil

G. Maintenance of Bridges and Culverts. 1. Steel.

a. Cleaning. b. Painting. c . Adjusting members. d. Repair of floors.

1 . Concrete. 2. Bituminous surfaces. 3. Wood.

2. Concrete. a. Care of cracks and joints. b. Floor surface. c. Wings and abutments.

1. Backfill. 2. Drainage.

H. General Maintenance Problems. 1. Special maintenance. 2. Guard fences. 3. Milk stands. 4. Mail boxes. 5. Signs. 6. Additional entrance culverts. 7. Additional cross road culverts. 8. Permits to corporations or individuals. 9. Obstruction of drainage in front of residences.

10. Injuries to employees. 11. D anger signals. 12. R. R. crossings.

I. Maintenance of County Road Systems. 1 . Organiz:~ tion. 2. Patrol sections. 3. Equipment for patrolmen. 4. Large grading equipment.

a. Graders. b. Tractors.

5. Reports and records.

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SATURDAY, FEBRUARY~, 1~1

Morning Session, 9:00 A.M.

V. ROAD AND BIUDGE MATERIALS-The activities of the Bureau of Tests, DiTision of Highways. H. F. Clemmer. En1rineer of Tests. will preside and a.leo act as a leader of discussion of all topios under this hea.din~t. and will ren· der all decisions regardin~ the policy of the Division of High­wars relating to these topics. He wlll be assisted by the District Engineers and other engineers of the Division of Highways, and by members of the University Faculty.

A. Cement. 1. Tests of cement.

a. Sampling. b. Soundness test. c. Fineness test. d. Strength test.

2. Interpretation of results of tests. B. Aggregates.

1. Sampling of aggregates. a. At the pit. b. At the screening and washing plant. '. At the stock pile. d. At the quarry.

2. Grading of aggregates,-importance of gradation. C. Coarse Aggregates.

1. Quality. a. Stone. b. Gravel.

2. Tests and interpretation of results. a. Mechanical analysis. b. Wear test. c. Effect of impuriries.

3. Discussion and comparison of specifications of coarse aggregates for:

a. Base courses. b. Gravel pavement. c. Broken stone pavement. d. Bituminous macadam pavement. e. Bituminous concrete pavement f. Portland cement concrete pavement. g. Brick work.

· D. Fine Aggregates. 1. Quality of fine aggregate. 2. Tests and .interpretacion of results.

a. Mechanical analysis. b. Colorimetric and silt test. c. Strength test.

SATURDAY, FEBRUARY 26, 1921

Morning Session, 9:00A.M.

IV. ROAD AND BRIDGE MATERIALS- Continued

E. Proportioning of Concrete Materials. 1 . The theory of the strength of concrete. 2. Effect of mixing water 3. Use of pit run gravel.

F. Steel. 1. Tests of steel and interpretation of results .

a. Test specimens. b. Bend test. c. Tension test. d. Hardness test.

•

2. Reasons for the specifications of Division @f Highways

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G.

H.

I.

J.

Bituminous Materials. 1. Discussion and interpretation of specifications and

tests for: a. Oils for earth roads (Spec. El, E2, and E3). b. Bituminous materials for surface application on

gravel and macadam roads (Spec. Sl, S2, S3, ST.l, and ST.2).

c. Binders for bituminous macadam construction (Spec. Ml, M2, M3, and MT).

d. Bituminous cements for bituminous concrete con­struction (Spec. Cl, C2, C3, and CT).

e. Bituminous materials for cracks and joints (Spec. TXC and AXC).

f. Bituminous materials for bridge floors and ex-pansion devices.

2. Samplin2 of bituminous materials. Lumber 1. Discussion of Specifications for:

a . Wood block and lumber for bridge floors. b. Piling and structural timber for bridges.

2. Discussion of specifications for creosoting. a. Plant inspection. b. Field inspection. c. Analysis of preservative oil. d. Analysis of creosoted wood.

Paints. 1. Discussion and interpretation of tests and specifi-

cations for paint. a. Red lead paint for steel bridges. b. Sublimed blue lead paint for steel bridges. c . Sublimed white lead paint for steel bridges. d. White lead paint for wood.

Brick. 1 . Methods of sampling. 2. Discussion and interpretation of specifications and

tests for: a. Paving brick. b. Facing brick for hand rails.

SATURDAY, FEBRUARY 26, 1921

Afternoon Session, 2:00P.M.

VI. ROAD MACHINERY D. H. Cornell. Superintendent of Machinery, will preside and also act as leader of discusions of all topics under this heading and wil11·ender all decisions regarding the policy of the Division of High ways relating to these topics.

A. Trucks. 1. Care of trucks. 2 . Repairs. 3. Overloading. 4. Lubrication.

B. Passenger Cars. 1. Selection of proper type for various assignments. 2. Maintenance. 3. Repairs. 4. Unserviceable cars.

C. Tires. 1 . Care of tires. 2 . Mileage reports.

D. Miscellaneous Machinery.

VII. TOPICS OF GENERAL INTEREST. 3:00P.M.

A. Miscellaneous Topics suggested by discussion. B. Original Topics not included in discussion. C. Question and answers.

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MUNICIPAL PROGRAM

SEWERAGE AND SEWAGE DISPOSAL February 24, 1921 9:00 a.m. Professor H. E. BABBITT Separate, combined and storm water systems of sewerage. Quantity of sewage-storm flow, sanitary sewage. Hydraulics of sewers. Engineering work on design. Design of sewering. Appurtenances and details. Methods of sewage disposal available for the smaller cities.

WATER WORKS AND WATER PURIFICATION February 24, 1921 2:00 p.m. Professor M. L. ENGER

Sources of supply. Quantity of water required. Distribution system. Reservoirs and elevated tanks. Pumps and other mechanical equipment. Quality of water. Purification and sterilization. Financial.

SPECIAL ASSESSMENT FOR LOCAL IMPROVEMENTS

February 25, 1921 9:00a.m. Professor A. N. TALBOT

Underlying principles of the special assessment method of raising funds. Comparison with principles governing other methods of taxation. What constitutes a local improvement? Nature of benefits. Basis of assessment and methods of distributing the tax in special cases. How the benefit may be established. Benefit to public and determination of amount to be paid from city treasury.

MAINTENANCE OF CITY PAVEMENTS.

February 25, 1921 10:00 a.m. Mr. F. C. LoHMAN City Engineer, Champaign, III.

Financing maintenance. Equipment and organization. Causes making maintenance necessary. Character of repairs. Methods of repairing. Records.

BOULEVARD LIGHTING SYSTEMS February 25, 1921 2:00 p.m. Size and spacing of units. Standards and fixtures. Cables and systems of installation. Regulators-types and characteristics.

Mr. A. R. KNIGHT

Note: An opportunity will be given to discuss particular problems confronting city engineers.

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