1000 resultados para Clarke County (Va.)
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Mode of access: Internet.
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In pamphlet box with 19 additional folded maps.
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Preface signed C. J. (i. e. Cornelia Janney)
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Mode of access: Internet.
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Mode of access: Internet.
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Parallel texts in Latin and English.
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Includes reproduction of t.-p. of original edition, Buffaloe Creek, Brooke County, Va., 1823.
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Also covers Arlington and Loudoun counties.
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Shows the parcel bounded by Bull Run Creek to the south, Cub Run to the west, and Little Rocky Run to the east in Fairfax County, Virginia and names of landowners.
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Efforts to eliminate rutting on the Interstate system have resulted in 3/4 in. aggregate mixes, with 75 blow Marshall, 85% crushed aggregate mix designs. On a few of these projects paved in 1988-1989, water has appeared on the surfaces. Some conclusions have been reached by visual on-sight investigations that the water is coming from surface water, rain and melting snow gaining entry into the surface asphalt mixture, then coming back out in selected areas. Cores were taken from several Interstate projects and tested for permeability to investigate the surface water theory that supposedly happens with only the 3/4 in. mixtures. All cores were of asphalt overlays over portland cement concrete, except for the Clarke County project which is full depth AC. The testing consisted of densities, permeabilities, voids by high pressure airmeter (HPAM), extraction, gradations, AC content, and film thicknesses. Resilient modulus, indirect tensile and retained strengths after freeze/thaw were also done. All of the test results are about as expected. Permeabilities, the main reason for testing, ranged from 0.00 to 2.67 ft per day and averages less than 1/2 ft per day if the following two tests are disregarded. One test on each binder course came out to 15.24 ft/day, and a surface course at 13.78 ft/day but these are not out of supposedly problem projects.
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The 1982 cost of a two-inch asphaltic concrete overlay, with fabric, was an average of 85% of the cost of a three-inch overlay (see attached calculations). A structural number can be assigned to the extra inch of overlay, whereas it is doubtful that any number can be assigned to the fabric. The observations made on the projects in this report leave little reason to be optimistic on the use of fabrics under asphalt overlays. This is especially true of the Floyd, Dallas and Clarke county projects. A great amount of fabric is being used nationwide for this purpose, probably more from sales promotion than from actual documented performance. Full scale field testing is continuing each time a project is let utilizing fabric reinforcement under asphaltic concrete overlays. It has already become apparent that the use of fabrics in AC overlays is not always cost effective.
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Grant of 38 acres of land in Culpeper County, Virginia, by Thomas, lord Fairfax, baron Cameron, "proprietor of the northern neck of Virginia," to Philip Pendleton. Issued in Frederick County, Virginia.
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"Printed as part of the Report of the Virginia State Library for the year ending September 30, 1918."--t.p.
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A collection of miscellaneous pamphlets on religion.
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Mode of access: Internet.