9781332068821 - the Six-chord Spiral (classic Reprint) by John Rittenhouse Stephens (3 results)
- Softcover
Seller: PBShop.store US, Wood Dale, IL, U.S.A.PBShop.store US
Contact seller5-star sellerCondition: New
£ 21.58
Free ShippingShips within U.S.A.Quantity: 15 available
PAP. Condition: New. New Book. Shipped from UK. Established seller since 2000.
- Softcover
Seller: PBShop.store UK, Fairford, GLOS, United KingdomPBShop.store UK
Contact seller5-star sellerCondition: New
£ 20.77
£ 3.29 shippingShips from United Kingdom to U.S.A.Quantity: 15 available
PAP. Condition: New. New Book. Shipped from UK. Established seller since 2000.
More images- Softcover
- Print on Demand
Seller: Forgotten Books, London, United KingdomForgotten Books
Contact seller5-star sellerCondition: New
£ 13.67
Free ShippingShips from United Kingdom to U.S.A.Quantity: Over 20 available
Paperback. Condition: New. Print on Demand. This book provides an ordinary multiform compound curve of equal-length arcs, their degrees of curvature increasing in the order of natural numbers, arranged so that the seventh arc always coincides with the main circular curve. It presents several valuable features, including flexibil…ity, reduced reliance on tables, adaptability to curves of fixed offset or length, and intermediate transit points that can be set at any plus, saving time and trouble in spiraling old tracks. The book is easily grasped, memorized, and applied by transitmen with no previous knowledge of spirals, and the mathematical treatment is elementary throughout. On location, it is often not even necessary to run in the six-chord; a terminal curve of half the degree of the main curve and giving the same length as the spiral line can be substituted instead. This book is invaluable for any surveyor or engineer working on railroad design and maintenance. It is a comprehensive guide to the theory and practice of spiraling curves, and will be a valuable addition to any professional's library. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item.
