SPRING PAINTING
’07 Edition
A seasonable circular on the vital subject of paint. Different forms of metal and wood construction are attractively illustrated, and there’s just enough “talk.” Write for free copy B—14.
JOSEPH DIXON CRUCIBLE CO., Jersey City, U. S. A.
ESTABLISH ED 1844
PEERLESS
Mortar Colors
BLACK • RED • BROWN • BUFF
NEW COLORS: Moss Green, Royal Purple, French Gray, PompeianBuff, Colonial Drab
They are the original colors manufactured, and are the brightest and most durable
Samuel H. French & Co.
PHILADELPHIA
MINERAL WOOL
FIRE, SOUND and VERMIN PROOF SAMPLES AND CIRCULARS FREE
INSULATOR U. S. MINERAL WOOL CO.,
143 Liberty St. NEW YORK
J. S. THORN CO.
Architectural Sheet Metal Works
Manufacturers and Erectors of Ventilating Skylights, Fire proof Window Frames and Sash, and Opening Fixtures to operate Ventilating Sashes
Nos. 1223-33 Callowhill Street PHILADELPHIA, PA.
the doomed. The German poet Muller celebrates the legend in verse.—London Globe.
Practical Hints to Quarrymen.—The only slate region which has been geologically mapped is the western Vermont and eastern New York slate belt. Maps of quarries in this region are included in Bulletin No. 275 of the United States Geological Survey, which is a recent report by Mr. T. Nelson Dale on the slate deposits and slate industry of the United States. These quarry maps are designed to be of practical utility. The coloring shows where the Cambrian green and purple and the Ordovician red slates may be looked for or not looked for. The course of bedding and cleavage has been shown at several quarries by special symbols. The scale of the maps is sufficiently large to admit the entry of many more quarries and symbols. By using a small geological compass to determine the strike of any bed of good slate at any of the located quarries, and transferring it to the quarry maps by means of a protractor, the probable direction of the recurrence of the bed can be ascertained, and so with joints, hogbacks, or dikes. Such a compass should be provided with sights, spirit levels and movable ring to set off magnetic variation, and have a clinometer attachment to indicate angle or dip. Quarrymen are very skilled in detecting the presence of good slate from the peculiar appearance of the weathered edge surface. That skill appears to have been their only guide in prospecting in this region. Mr. Dale suggests that it would be well if it were reenforced by the use of a certain method in exploration, which he outlines. This bulletin, which should be of practical value to every quarryman in the country, is published for general distribution. It may be obtained, free of charge, by anyone who makes application for it.—Journal of the Franklin Institute.
Comparative Strength of Green Tamarack and Green Norway Pine.—A series
of tests to determine the relative strength of green tamarack and green Norway pine timber has recently been made by the Forest Service of the United States Department of Agriculture at the timber-testing laboratory at Purdue University, Lafayette, Indiana. The material was furnished by the Kettle River Quarries Company, of Minneapolis, and nearly all of it grew in St. Louis County, Minnesota. The strength values obtained apply only approximately to timber of the same species grown elsewhere.
Bending tests were made upon beams with a span of thirteen feet six inches, and ranging from four by ten to six by twelve inches in cross-sections. From these tests, showing the strength and stiffness of sound green tamarack and Norway pine in struc
tural sizes, the results were as follows:
Lb.g. Per
Strength. Sq. In. Modulus of rupture:
Tamarack ..................................................... 4,600 Norway pine ............................................... 4,000
Stiffness.
Modulus of electricity:
Tamarack ....................................................1,240,000 Norway pine ................................................1,189,000
Green tamarack thus appears to be uniformly stronger and stiffer than green Norway pine. When oven-dry, tamarack weighs twenty-nine pounds per cubic foot, and Norway pine about twenty-four pounds per cubic foot.
Tamarack is usually of slower growth than the pine. Bending tests on small clear pieces indicate that strength decreases in tamarack when the rate of growth is faster than an inch in eight years, and in Norway pine when the growth is faster than an inch in ten years. Comparative tests on the seasoned timber of the two species will be made later.
A Piping Controversy.—A controversy has arisen in New York between the plumbers and steam-fitters as to the class in which the installation of vacuum-cleaning system piping in buildings belongs. The plumbers lay claim to this work for the reason that connection is made from these systems to the sewers, while the steam-fitters maintain that the system is analogous to compressed-air piping systems, and properly belongs to them.—Exchange.
BUILDING NEWS.
(The editors greatly desire to receive information front the smaller and outlying towns as well as from the larger cities.)
Aberdeen, S. D.—It is stated that an offer has been made to the Commercial Club to erect a hotel at a cost of about $150,000.
STANLEY’S
BALL
BEARING HINGES
In WROUGHT BRONZE and STEEL
NEVER WEAR DOWN. NEVER CREAK. NEVER REQUIRE OILING.
The improved washer protects the balls against moisture and dust.
For Sale by Leading Hardware Dealers.
Attractive Literature for the asking.
THE STANLEY WORKS
NEW BRITAIN, CONN. NEW YORK CHICAGO
’07 Edition
A seasonable circular on the vital subject of paint. Different forms of metal and wood construction are attractively illustrated, and there’s just enough “talk.” Write for free copy B—14.
JOSEPH DIXON CRUCIBLE CO., Jersey City, U. S. A.
ESTABLISH ED 1844
PEERLESS
Mortar Colors
BLACK • RED • BROWN • BUFF
NEW COLORS: Moss Green, Royal Purple, French Gray, PompeianBuff, Colonial Drab
They are the original colors manufactured, and are the brightest and most durable
Samuel H. French & Co.
PHILADELPHIA
MINERAL WOOL
FIRE, SOUND and VERMIN PROOF SAMPLES AND CIRCULARS FREE
INSULATOR U. S. MINERAL WOOL CO.,
143 Liberty St. NEW YORK
J. S. THORN CO.
Architectural Sheet Metal Works
Manufacturers and Erectors of Ventilating Skylights, Fire proof Window Frames and Sash, and Opening Fixtures to operate Ventilating Sashes
Nos. 1223-33 Callowhill Street PHILADELPHIA, PA.
the doomed. The German poet Muller celebrates the legend in verse.—London Globe.
Practical Hints to Quarrymen.—The only slate region which has been geologically mapped is the western Vermont and eastern New York slate belt. Maps of quarries in this region are included in Bulletin No. 275 of the United States Geological Survey, which is a recent report by Mr. T. Nelson Dale on the slate deposits and slate industry of the United States. These quarry maps are designed to be of practical utility. The coloring shows where the Cambrian green and purple and the Ordovician red slates may be looked for or not looked for. The course of bedding and cleavage has been shown at several quarries by special symbols. The scale of the maps is sufficiently large to admit the entry of many more quarries and symbols. By using a small geological compass to determine the strike of any bed of good slate at any of the located quarries, and transferring it to the quarry maps by means of a protractor, the probable direction of the recurrence of the bed can be ascertained, and so with joints, hogbacks, or dikes. Such a compass should be provided with sights, spirit levels and movable ring to set off magnetic variation, and have a clinometer attachment to indicate angle or dip. Quarrymen are very skilled in detecting the presence of good slate from the peculiar appearance of the weathered edge surface. That skill appears to have been their only guide in prospecting in this region. Mr. Dale suggests that it would be well if it were reenforced by the use of a certain method in exploration, which he outlines. This bulletin, which should be of practical value to every quarryman in the country, is published for general distribution. It may be obtained, free of charge, by anyone who makes application for it.—Journal of the Franklin Institute.
Comparative Strength of Green Tamarack and Green Norway Pine.—A series
of tests to determine the relative strength of green tamarack and green Norway pine timber has recently been made by the Forest Service of the United States Department of Agriculture at the timber-testing laboratory at Purdue University, Lafayette, Indiana. The material was furnished by the Kettle River Quarries Company, of Minneapolis, and nearly all of it grew in St. Louis County, Minnesota. The strength values obtained apply only approximately to timber of the same species grown elsewhere.
Bending tests were made upon beams with a span of thirteen feet six inches, and ranging from four by ten to six by twelve inches in cross-sections. From these tests, showing the strength and stiffness of sound green tamarack and Norway pine in struc
tural sizes, the results were as follows:
Lb.g. Per
Strength. Sq. In. Modulus of rupture:
Tamarack ..................................................... 4,600 Norway pine ............................................... 4,000
Stiffness.
Modulus of electricity:
Tamarack ....................................................1,240,000 Norway pine ................................................1,189,000
Green tamarack thus appears to be uniformly stronger and stiffer than green Norway pine. When oven-dry, tamarack weighs twenty-nine pounds per cubic foot, and Norway pine about twenty-four pounds per cubic foot.
Tamarack is usually of slower growth than the pine. Bending tests on small clear pieces indicate that strength decreases in tamarack when the rate of growth is faster than an inch in eight years, and in Norway pine when the growth is faster than an inch in ten years. Comparative tests on the seasoned timber of the two species will be made later.
A Piping Controversy.—A controversy has arisen in New York between the plumbers and steam-fitters as to the class in which the installation of vacuum-cleaning system piping in buildings belongs. The plumbers lay claim to this work for the reason that connection is made from these systems to the sewers, while the steam-fitters maintain that the system is analogous to compressed-air piping systems, and properly belongs to them.—Exchange.
BUILDING NEWS.
(The editors greatly desire to receive information front the smaller and outlying towns as well as from the larger cities.)
Aberdeen, S. D.—It is stated that an offer has been made to the Commercial Club to erect a hotel at a cost of about $150,000.
STANLEY’S
BALL
BEARING HINGES
In WROUGHT BRONZE and STEEL
NEVER WEAR DOWN. NEVER CREAK. NEVER REQUIRE OILING.
The improved washer protects the balls against moisture and dust.
For Sale by Leading Hardware Dealers.
Attractive Literature for the asking.
THE STANLEY WORKS
NEW BRITAIN, CONN. NEW YORK CHICAGO