Modern tunnel practice - 6 Angebote vergleichen

Von Händler/Antiquariat, BuySomeBooks [52360437], Las Vegas, NV, U.S.A.
This item is printed on demand. Paperback. 80 pages. Dimensions: 9.5in. x 7.4in. x 0.2in.This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1911 Excerpt: . . . high, is driven and timbered, and over the caps are inserted four sheetsteel poling-boards. Ahead of A and below it, is driven a second heading B, 8x6 feet; this latter heading serves for the removal of the soil. From heading A a drift is carried right and left toward the haunches, steel poling-boards being inserted and braced by radial struts from the core below. On each haunch and at the same time the drifts D are driven and roofed in a similar manner, working toward the springing lines. When drifts C and D meet an annular space is dug out, 30 inches deep, or the width of the poling-boards; in this space the concrete arch is built on centers in 30-inch sections. The steel poling-boards referred to are made of No. 12 plate, 2 feet by 2 feet 6 inches in plan, and on each of the four sides is riveted a 2 x 2 x;-inch angle, each drilled for four bolt-holes, used in connecting the plates. In operation, four crown-plates F1g. 84. --East Boston Tunnel; Atlantic Avenue Station: Method of Building Roof-arch. are inserted endwise at the top of heading A and bolted together and to the rear plates. The lateral enlargement, 5 feet high and 30 inches wide, is roofed in a similar way for every 2 feet gained. Normally, the advance heading is kept about 10 feet in advance of the arch ring. All the material from the headings A and B and the lateral drifts C is removed on muck cars running in the heading B; the spoil from the drifts D is passed down to cars in the bottom side drifts. The arch-ring centers were built in 30-inch sections, and the lagging is left off the ribs at the crown. A special floor is con structed for the concrete cars, as the arch work progresses, and at the level of the top deck of the shield through which the cars must pass on their way through . . . This item ships from La Vergne,TN.

Lieferung aus: Vereinigte Staaten von Amerika, Usually ships in 1-2 business days.
Von Händler/Antiquariat, super_star_seller.
This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1911 Excerpt: ...high, is driven and timbered, and over the caps are inserted four sheetsteel poling-boards. Ahead of A and below it, is driven a second heading B, 8x6 feet; this latter heading serves for the removal of the soil. From heading A a drift is carried right and left toward the haunches, steel poling-boards being inserted and braced by radial struts from the core below. On each haunch and at the same time the drifts D are driven and roofed in a similar manner, working toward the springing lines. When drifts C and D meet an annular space is dug out, 30 inches deep, or the width of the poling-boards; in this space the concrete arch is built on centers in 30-inch sections. The steel poling-boards referred to are made of No. 12 plate, 2 feet by 2 feet 6 inches in plan, and on each of the four sides is riveted a 2 x 2 x;£-inch angle, each drilled for four bolt-holes, used in connecting the plates. In operation, four crown-plates F1g. 84.--East Boston Tunnel; Atlantic Avenue Station: Method of Building Roof-arch. are inserted endwise at the top of heading A and bolted together and to the rear plates. The lateral enlargement, 5 feet high and 30 inches wide, is roofed in a similar way for every 2 feet gained. Normally, the advance heading is kept about 10 feet in advance of the arch ring. All the material from the headings A and B and the lateral drifts C is removed on muck cars running in the heading B; the spoil from the drifts D is passed down to cars in the bottom side drifts. The arch-ring centers were built in 30-inch sections, and the lagging is left off the ribs at the crown. A special floor is con structed for the concrete cars, as the arch work progresses, and at the level of the top deck of the shield through which the cars must pass on their way through ... Paperback, Label: RareBooksClub.com, RareBooksClub.com, Product group: Book, Published: 2012-05-09, Studio: RareBooksClub.com.

Lieferung aus: Vereinigte Staaten von Amerika, Usually ships in 1-2 business days, Real shipping costs can differ.
Von Händler/Antiquariat, BooKnackrh.
This is a reproduction of a book published before 1923. This book may have occasional imperfections such as missing or blurred pages, poor pictures, errant marks, etc. that were either part of the original artifact, or were introduced by the scanning process. We believe this work is culturally important, and despite the imperfections, have elected to bring it back into print as part of our continuing commitment to the preservation of printed works worldwide. We appreciate your understanding of the imperfections in the preservation process, and hope you enjoy this valuable book. ++++ The below data was compiled from various identification fields in the bibliographic record of this title. This data is provided as an additional tool in helping to ensure edition identification: ++++ Modern Tunnel Practice David McNeely Stauffer The Engineering News Pub. Co., 1911 Tunneling, Paperback, Label: Nabu Press, Nabu Press, Product group: Book, Published: 2011-07-16, Studio: Nabu Press.

Lieferung aus: Vereinigte Staaten von Amerika, Usually ships in 1-2 business days, Real shipping costs can differ.
Von Händler/Antiquariat, super_star_seller.
This is a reproduction of a book published before 1923. This book may have occasional imperfections such as missing or blurred pages, poor pictures, errant marks, etc. that were either part of the original artifact, or were introduced by the scanning process. We believe this work is culturally important, and despite the imperfections, have elected to bring it back into print as part of our continuing commitment to the preservation of printed works worldwide. We appreciate your understanding of the imperfections in the preservation process, and hope you enjoy this valuable book. ++++ The below data was compiled from various identification fields in the bibliographic record of this title. This data is provided as an additional tool in helping to ensure edition identification: ++++ Modern Tunnel Practice David McNeely Stauffer The Engineering News Pub. Co., 1911 Tunneling, Paperback, Label: Nabu Press, Nabu Press, Product group: Book, Published: 2011-07-16, Studio: Nabu Press.

Lieferung aus: Kanada, In Stock, plus shipping.
David Mcneely Stauffer, Books, History, Modern Tunnel Practice, This is a reproduction of a book published before 1923. This book may have occasional imperfectionssuch as missing or blurred pages, poor pictures, errant marks, etc. that were either part of the original artifact, or were introduced by the scanning process. We believe this work is culturally important, and despite the imperfections, have elected to bring it back into print as part of our continuing commitment to the preservation of printed worksworldwide. We appreciate your understanding of the imperfections in the preservation process, and hope you enjoy this valuable book.++++The below data was compiled from various identification fields in the bibliographic record of this title. This data is provided as an additional tool in helping to ensure edition identification: ++++ Modern Tunnel Practice David McNeely Stauffer The Engineering News Pub. Co., 1911 Tunneling.

Lieferung aus: Kanada, In Stock, plus shipping.
David Mcneely Stauffer, Books, Modern tunnel practice, Modern tunnel practice.