Sayfadaki görseller
PDF
ePub

factured by the Municipal Engineering and Contracting Company, and very generously sold by them for an amount much lower than the market price.

Five hollow concrete block machines manufactured and very kindly loaned by the American Hydraulic Stone Company, Denver, Colo.; the Miracle Pressed Stone Company, Minneapolis, Minn.; the P. B. Miles Manufacturing Company, Jackson, Mich.; the Dykema Company, Grand Rapids, Mich.; and the Century Machine Company, Jackson, Mich. These machines, representing different types, were selected by a committee of the Concrete Block Machine Manufacturers' Association.

Six steel molds, with 90 extra interchangeable bottoms for 8 by 11 inches by 13foot beams, also adjustable for 6-, 8-, and 10-foot beams.

Seventy-two cast-iron molds for cylindrical test pieces 8 inches in diameter and 16 inches long, 12 of which were furnished by the Reclamation Service.

Twenty-four cast-iron molds for 6-inch cubes, 12 of which were also furnished by the Reclamation Service.

Sixty-three single brass molds for transverse specimens of cement 1 by 1 inch in cross section and 13 inches long; 10 of these molds were furnished by the Reclamation Service.

Eighteen 3-gang and 18 5-gang standard brass briquet molds. Eight of the 3-gang and 10 of the 5-gang molds were furnished by the Reclamation Service.

Twenty 3-gang 2-inch cube molds of brass. Fourteen of the 2-inch cube molds were furnished by the Reclamation Service.

Four cubic-foot measures.

One hundred and eighty cement storage cans of galvanized iron, 24 inches in diameter and 29 inches high.

Three hundred tin storage cans, 63 inches in diameter, 63 inches high, with a 4-inch diameter screw top.

One complete accelerated-test apparatus for cement, including a copper tank, metalframe support, and constant-level bottle.

One 5-gallon still.

One water bath of heavy copper.

One 4-inch diameter electrical hot plate.

One 12-inch diameter electrical hot plate.

One 10-horsepower American standard feed-water heater.

Two soapstone moist closets, 433 by 24 by 18 inches.

Nine soapstone tanks, 7 feet long and 30 inches wide, eight of which are 6 inches and one 30 inches deep, inside measure. These tanks are arranged in tiers of three each, on steel frames, and piped for running water. Two tiers were manufactured by Stambach & Love, Philadelphia, and one by Cahill, Swift & Co., St. Louis. Two standard mixing tables with glass tops.

Two sets standard brass sieves 8 inches in diameter, having 10, 20, 30, 40, 50, 80, 100, and 200 meshes per linear inch.

Two automatic sifting machines, one belt driven and the other motor driven, manufactured by Howard & Morse, Brooklyn, N. Y.

Three analytical balances.

Five Troemner scales, two No. 7, two No. 293, and two No. 80; the No. 7 scale being furnished by the Reclamation Service.

Five movable platform scales.

Three hand trucks.

One steel carriage for raising and moving concrete beams. This consists of an 8-inch channel, supported by steel legs 15 feet long, the bottom flange of which serves as a track for two 1-ton trolleys with roller bearings, bearing differential hoists.

One air compressor with a complete outfit of air tampers and tools, generously loaned by the Ingersoll-Rand Drill Company, New York.

One complete outfit for preparing cubes of stone, consisting of a gang saw, band saw, slicing machine, and polishing table.

Four compressometers.

Two extensometers.

Four beam deformeters.

Four slip of rod apparatus.

Three Thatcher computing machines.

Two Draper recording thermometers.

One Bristol recording thermometer.

One muffle furnace.

Two gas furnaces.

One gas generator for chemical laboratory.

One Buffalo portable forge.

Two lever jacks.

One Lodge & Shipley machine lathe.

One 70-horsepower horizontal tubular boiler.

One 74-horsepower Habercorn slide-valve engine.

One Worthington fire pump.

One Westinghouse dynamo.

In addition to the above equipment all the divisions of the laboratories have a complete equipment of smaller apparatus, and facilities for making the tests covered by the investigations.

ACKNOWLEDGMENT OF DONATIONS.

The extent and importance of the investigations of structural materials being conducted by the United States Geological Survey are such that in order to procure the needed information in a reasonable time, it is necessary to make the available appropriations cover as much work as possible. These appropriations are relatively small in comparison with the amount of work to be done, and it is extremely desirable that all persons interested in this work should accord it their hearty support as far as possible. The results of these investigations will be of great value not only to the Government, but to the public at large, especially engineers, architects, contractors, manufacturers, and all others who manufacture or use structural materials. The help which has been received up to the present time has made it possible to devote to the investigations a large amount of money that otherwise would have been spent in defraying transportation charges for materials and men, and for purchasing the materials with which to conduct the investigations. In most cases it has been simply necessary to make known the needs of these laboratories for materials or transportation; in a few cases material has been especially solicited, and in almost every case the reply has been a generous compliance with the request.

Railroads have aided in the work by transporting the materials and the employees of the laboratories free of charge. Special acknowledgments are made to those lines and to certain Portland cement manufacturers, collectively and individually; also to the Municipal Engineering and Contracting Company, the Hydrex Felt Engineering Company, the Concrete Block Machine Manufacturers'

Association, the Underwriters' Laboratories of Chicago, the Illinois Steel Company, the Carnegie Steel Company, and the Ingersoll-Rand Drill Company.

Acknowledgment is due the Union Sand and Material Company, of St. Louis, Mo., for donations of material as well as for courtesies extended and for service in delivering material by teams for use in these laboratories.

The tests that are being made require large quantities of cement, sand, gravel, stone, and steel, and up to the present time these have been contributed generously and promptly upon request. For donations of Portland cement acknowledgments are made to the following companies:

Alpha Portland Cement Co., Easton, Pa.
American Cement Co., Egypt, Pa.
Atlas Portland Cement Co., Hannibal,
Mo.

Peerless Portland Cement Co., Union
City, Mich.

Penn Allen Portland Cement Co., Bath,
Pa.

Bonneville Portland Cement Co., Sieg- Pennsylvania Cement Co., Bath, Pa.
fried, Pa.
Phoenix Cement Co., Nazareth, Pa.
Chicago Portland Cement Co., Oglesby, Sandusky Portland Cement Co., Syra-
Ill.

cuse, Ind.

Coplay Cement Manufacturing Co., Cop- St. Louis Portland Cement Co., St. Louis, lay, Pa.

Mo.

Dexter Portland Cement Co., Nazareth, Universal Portland Cement Co., Chicago, Pa.

[blocks in formation]

Ill.

Virginia Portland Cement Co., Fordwick,
Va.

Vulcanite Portland Cement Co., Vulcan-
ite, N. J.

Western Portland Cement Co., Yankton,

S. Dak.

Whitehall Portland Cement Co., Cementon, Pa.

Wolverine Portland Cement Co., Coldwater, Mich.

For contributions of steel bars acknowledgments are made to the Illinois Steel Company and to the Carnegie Steel Company. For donations of sand, gravel, and crushed stone in carload lots acknowledgments are made to the following:

Carmichael, Wm. R., Williamsport, Ind.
Casper-Stolle Construction Co., East St.
Louis, Ill.

Chicago Crushed Stone Co., Chicago, Ill.
East St. Louis Stone Co., East St. Louis,
Ill.

Fruin-Bambrick Construction Co., St.
Louis, Mo.

Grafton Quarry Co., Grafton, Ill.

McLaughlin-Mateer Co., Kankakee, Ill.
Ozark Red Granite Co., St. Louis, Mo.
Reliance Quarry Co., Alton, Ill.
Rickey, C. A., Louisville, Nebr.
Schneider Granite Co., St. Louis, Mo.
Union Sand and Material Co., St. Louis,
Mo.

United Railways of St. Louis.

For courtesies extended and facilities afforded in investigating the various deposits of sand, stone, and gravel, forming a part of the field work of these laboratories, acknowledgments are made to the following:

American Sand and Gravel Co., Chicago, Lauer, Jacob, St. Paul, Minn.

Ill.

American Smelting and Refining Co.,

Omaha, Nebr.

Andrew & Hoertz, Louisville, Ky. Atwood-Davis Sand Co., Beloit, Wis. Bambrick-Bates Construction Co., St. Louis, Mo.

Beloit Concrete Stone Co., Beloit, Wis.
Biesanz Stone Co., Minnesota City, Minn.
Big Rock Stone and Construction Co.,
Little Rock, Ark.

Buckeye Dredging Co., Columbus, Ohio.
Bull Frog Mining Co., Joplin, Mo.
Carey Construction Co., Cleveland, Ohio.
Casparis Stone Co., Columbus, Ohio.
Chicago, Milwaukee and St. Paul Rail-
road.

Chilton, Chas., Ottumwa, Iowa.
City of Madison, Madison, Wis.
Cleveland Builders Supply Co., Cleve-
land, Ohio.

Clifton Sand and Gravel Co., Vicksburg,
Miss.

Cobb, H. H. & L. D., Fort Worth, Tex.
Coughlan, T. R., Mankato, Minn.
Darragh Bros., Marble Falls, Tex.
Eagle Point Lime Works, Dubuque, Iowa.
Fleming & Co., Cincinnati, Ohio.
Glencoe Lime and Cement Co., St. Louis,
Mo.

Granby Zinc and Mining Co., Joplin, Mo.
Greene, J. A., Stone City, Iowa.
Greenleaf Stone Co., Greenleaf, Wis.
Hillsboro Stone Co., Hillsboro, Ohio.
Horton Stone and Milling Co., Spring-
field, Mo.

Houston and Texas Central Railroad, Houston, Tex.

Hydraulic Pressed Brick Co., St. Louis, Mo.

Jahuke Navigation Co., New Orleans, La. Jarrett Construction Co., Sibley, La. Kelley Sand and Fuel Co., Burlington, Iowa.

Laclede Fire Brick Co., St. Louis, Mo. La Crosse Stone Co., La Crosse, Wis. Lake Shore Stone Co., Milwaukee, Wis.

Lauterdale, J. W., Millican, Tex.

Le Claire Stone Co., Bettendorf, Iowa. | Little, C. H., & Co., Detroit, Mich. Louisiana Railway and Navigation Co., Colfax, La.

Loveland Stone and Gravel Co., Loveland, Ohio.

McTernan & Halpin Construction Co., Kansas City, Mo.

Merchants Ice and Coal Co., St. Louis, Mo.

Miami Sand and Gravel Co., Loveland, Ohio.

Mineral Supply Co., Minneapolis, Minn. Missouri Pacific Railway, Little Rock, Ark.

Mitchell Fire Clay Co., St. Louis, Mo.
Missouri, Kansas and Texas Railway,
Osage, Okla.

Moores, Cooney Co., Cincinnati, Ohio.
Moorman, E. S., Baton Rouge, La.
Mound City Gravel Co., St. Louis, Mo.
New Union Sand Co., St. Louis, Mo.
Norton, C. E., Ottumwa, Iowa.
Ohio and Michigan Gravel and Sand Co.,
Toledo, Ohio.

Ohio River Sand Co., Louisville, Ky.
Ousley, Dr. J. D., Denison, Tex.
Perkinson Bros., St. Louis, Mo.
Rucker Stone Co., Greenfield, Ohio.
St. Joseph Lead Co., Hoffman, Mo.
St. Joseph Street Construction Co., St.
Joseph, Mo.

Samuels & Holmes, Kansas City, Mo.
Scullin-Gallagher Iron and Steel Co.,
St. Louis, Mo.

Sheehan, J. P., Austin, Tex. Shreveport Sand and Concrete Co., Shreveport, La.

Sibley Quarry Co., Sibley, Mich. Southern Ilydraulic Stone Co., Galveston, Tex.

Stewart-Peck Sand Co., Kansas City, Mo. Storey Bros., Milwaukee, Wis.

Toledo Stone and Glass Sand Co., Toledo, Ohio.

Ware, R. J., & Sons, Cincinnati, Ohio.

PROGRAMME FOR INVESTIGATION OF CONCRETE AND REINFORCED CONCRETE.

ORIGIN OF THE PLAN.

In October, 1904, the joint committee, in session at the Louisiana Purchase Exposition, St. Louis, Mo., adopted a programme of the tests necessary to procure the information desired in the preparation of a report on concrete and reinforced concrete, together with suggestions for putting the same into effect. The plan proposed that the subcommittee on tests should arrange for the cooperation of the joint committee with those schools of technology having adequate facilities for making the tests desired, and also arrange to supervise these tests so as to insure the proper accuracy and correlation of work. Materials of uniform and satisfactory quality were to be furnished to the different institutions, and methods of testing were to be outlined so as to standardize them as far as practicable. The inspection of the preparation of the test pieces and testing of the same by an experienced assistant was to be maintained, in order that the sources of error arising from the investigation of closely related problems at scattered laboratories might be reduced to a minimum. Funds to defray the cost of the material and the expense of efficient inspection were to be raised by a subcommittee on ways and means.

In response to an invitation issued by the subcommittee on tests in behalf of the joint committee, the following technical institutions expressed a willingness to cooperate in the work: Case School of Applied Science, Columbia University, Cornell University, Harvard University, Massachusetts Institute of Technology, Ohio State University, Purdue University, State University of Iowa, University of Illinois, University of Minnesota, University of Pennsylvania, and University of Wisconsin. The investigations assigned by the subcommittee on tests were conducted at these institutions during the same college year (1904-5) by advanced students or members of the instruction staff. Since arrangements for investigative work by students in nearly all such institutions necessitate the completion of any series of tests by at least the last of May of each year, the time available proved insufficient for making needed arrangements and providing materials sufficiently in advance to permit the completion of the requisite tests. This rendered impossible the thorough organization that was desired in the first year's work.

DETAILS OF THE PLAN.

I. EXAMINATION AND CLASSIFICATION OF CONSTITUENT MATERIALS.

A. Examination of deposit.—Sands, gravels, stones, gravel and stone screenings (4-inch screen), slags, cinders, etc., are to be collected by a special representative of the testing laboratory sent out for that purpose. The deposit from which the samples are collected is to be examined to determine the extent and natur of the material.

« ÖncekiDevam »