Third Floor, Fourth Floor, Stoughton, 1874

Floor plan of renovations for the third and fourth floors of Stoughton Hall, as drawn by William Rotch Ware in 1874. Includes dimensions for student chambers, H.P. Club Rooms, hallways, and coal furnaces.

Mr. [Levi] Colburn's estimate, 14 April 1813

In this letter from Levi Colburn to Loammi Baldwin, Colburn details the cost estimates in dollars for the roof, floors, windows, and labor of University Hall.

Misr. [Josiah] Moore, [John] Walton's & al's estimate, [ca. 1813]

Moore and Walton's projected cost for finishing University Hall is $5,386.61. This includes finishing the roof, laying the floors, and installing the gutters and windows.

Agreement between John Lowell and John Walton, Thomas Mason, Joseph Holmes, and Samuel Mason to finish the basement of University Hall, 7 June 1814

This contract includes stipulations for finishing the two kitchens, windows, and floors in University Hall by the first of August 1815.

Holocene flood frequency across the Central Alps

The frequency of large-scale heavy precipitation events in the European Alps is expected to undergo substantial changes with current climate change. Hence, knowledge about the past natural variability of floods caused by heavy precipitation constitutes important input for climate projections. We present a comprehensive Holocene (10,000 years) reconstruction of the flood frequency in the Central European Alps combining 15 lacustrine sediment records. These records provide an extensive catalog of flood deposits, which were generated by flood-induced underflows delivering terrestrial material to the lake floors. The multi-archive approach allows suppressing local weather patterns, such as thunderstorms, from the obtained climate signal. We reconstructed mainly late spring to fall events since ice cover and precipitation in form of snow in winter at high-altitude study sites do inhibit the generation of flood layers. We found that flood frequency was higher during cool periods, coinciding with lows in solar activity. In addition, flood occurrence shows periodicities that are also observed in reconstructions of solar activity from 14C and 10Be records (2500-3000, 900-1200, as well as of about 710, 500, 350, 208 (Suess cycle), 150, 104 and 87 (Gleissberg cycle) years). As atmospheric mechanism, we propose an expansion/shrinking of the Hadley cell with increasing/decreasing air temperature, causing dry/wet conditions in Central Europe during phases of high/low solar activity. Furthermore, differences between the flood patterns from the Northern Alps and the Southern Alps indicate changes in North Atlantic circulation. Enhanced flood occurrence in the South compared to the North suggests a pronounced southward position of the Westerlies and/or blocking over the northern North Atlantic, hence resembling a negative NAO state (most distinct from 4.2 to 2.4 kyr BP and during the Little Ice Age). South-Alpine flood activity therefore provides a qualitative record of variations in a paleo-NAO pattern during the Holocene. Additionally, increased South Alpine flood activity contrasts to low precipitation in tropical Central America (Cariaco Basin) on the Holocene and centennial time scale. This observation is consistent with a Holocene southward migration of the Atlantic circulation system, and hence of the ITCZ, driven by decreasing summer insolation in the Northern hemisphere, as well as with shorter-term fluctuations probably driven by solar activity.

Causes and measurements of walkway slipperiness, present status and future needs.

Mode of access: Internet.

Dell' origine e de' progressi dell' Instituto delle scienze di Bologna : e di tutte le accademie ad esso unite, con la descrizione delle più notabili cose, che ad uso del mondo letterario nello stesso Instituto si conservano : operetta in grazia degli eruditi /

Signatures: A-G⁸ H⁴.

A new and fashionable mosaic puzzle : forming a variety of elegant devices adapted for tesselated pavements &c. &c. &c. /

Title page includes illustration of a pavement under a columned archway; all other ill. are squares with individual black & white geometric designs, except for leaf [9] which contains squares without designs but with guidelines drawn in them.

Invitation to contractors and forms of contract, bond andcontractor's proposal for construction of a part of the ... Rapid transit railroad ... Form finaly adopted by the Commission ...

Some numbers have special subtitles, as follows: no. 5, sect. 8/11, "proposal for installation of cable feed pipes..." no. 16/18/36/37 [combined] "proposal for construction of signal towers..." no. 18 (180th street and 239th street yards)" proposal for furnishing and erecting structural steel for inspection sheds..." no. 19/22, sect. 2. "proposal for erection of structural steel..." no. 49, sect. 1/2, "proposal for construction of concrete track floors and platforms ..." no. 49, sect. 3, "proposal for the supply of structural steel ..."

Duas palavras sobre pavimentos /

Mode of access: Internet.

An experimental study of a quarter-scale reinforced concrete flat slab floor /

Mode of access: Internet.

Recherches astronomiques de l'Observatoire d'Utrecht.

Ceased with volume 18:2. Superseded by the Bullletin of the Astronomical Institutes of the Netherlands, Supplement series.

Concrete floor slabs on grade subjected to heavy loads.

Includes appendices.

Raised floor systems /

"September 1981."

Concrete floor slabs on grade subjected to heavy loads.

"August 1987."