Armourstone revetments : will standard design criteria prevent failure? /

Bank stabilization structures are used to prevent the loss of valuable land within the urban environment and the decision for the type of structure used depends on the properties of the stream. In the urban areas of Southern Ontario there is a preference for the use of armourstone blocks as bank stabilization. The armourstone revetment is a free standing stone structure with large blocks of stone layered vertically and offset from one another. During fieldwork at Forty Mile Creek in Grimsby, Ontario armourstone failure was identified by the removal of two stones within one column from the wall. Since the footer stones were still in place, toe scour was eliminated as a cause of failure. Through theoretical, field, and experimental work the process of suction has been identified as a mode of failure for the armourstone wall and the process of suction works similarly to quarrying large blocks of rock off bedrock streambeds. The theory of lateral suction has previously not been taken into consideration for the design of these walls. The physical and hydraulic evidence found in the field and studied during experimental work indicate that the armourstone wall is vulnerable to the process of suction. The forces exerted by the flow and the resistance of the block determine the stability of the armourstone block within the wall. The design of the armourstone wall, high surface velocities, and short pulses of faster flowing water within the profile could contribute to armourstone failure by providing the forces needed for suction to occur, therefore adjustments to the design of the wall should be made in order to limit the effect.

The condition of Niagara Falls, and the measures needed to preserve them : eight letters published in the New York Evening post, the New York tribune, and the Boston daily advertiser, during the summer of 1882 /

Appendix: Extracts from Harper's weekly, New York herald, New York tribune and the Nation.

Letters from the Secretary of War to the Committee of Ways and Means, in relation to the number of Militia called into the public service in 1813, to a provision for paying the bounties and premiums to soldiers lately authorized, and to the strength of the army.--

At head of title: [78].

Amacy Matthews Letters, 1918

The correspondence is dated October 19, 1918 and December 17, 1918. Amacy Matthews was the treasurer for the Township of Crowland. The correspondence is from J.W. [John Wells] Marshall, the county school inspector and relates to payments to be made to each teacher listed in the correspondence. Each letter includes the signature of the teacher acknowledging receipt of the funds. Teachers listed are Orlin McKenney, Edward Farr, Leonard Matthews, Charles Terreberry, Hiram Pratt, William VanAlstine, Grant Jenkinson and Harry Terreberry.

Dr. A. Leon Hatzan letters,1926, 1932-1940, n.d.

Alexander Leon Hatzan (1864-1941), a native of Belgium, was a self-described medical doctor, missionary, academic and some time herbalist. In 1918 he moved to Niagara Falls, first living on Clifton Avenue (now Zimmerman Ave.), later moving to the River Road home he shared with his wife Ada Beatrice Rolston (1882-1975). He was the author of three books and at least four known music scores. He was heavily involved in the promotion of his books and his music. The correspondence is chiefly in reply to gifts of books and/or music sent by Hatzan to the recipients or in reply to requests for speaking engagements. Hatzan died on October 7, 1941 while visiting Vancouver, BC.

Letters to Secretary General Drummond from Thomas Scott, July 1814

Thomas Scott (1746-1824) was a politician and judge originally from Scotland. He came to Canada in 1800 after accepting the appointment of Attorney General of Upper Canada, and in 1806 was promoted to Chief Justice of Upper Canada. The declaration of war in 1812 brought into question the loyalty of the colony’s population, who were largely born in America. As concerns over allegiance intensified, the government sought out traitors in an attempt to make an example of them and deter others. The subsequent trials of citizens accused of treason resulted in 15 convictions, including Jacob Overholser. These trials were intended to assert the authority of the state, but also to demonstrate clemency. Only 8 of the convicts were executed, with the rest being banished from the colony. Scott supported these measures, although they were largely initiated by Attorney General John Beverly Robinson. Thomas Scott retired in 1816 and died in 1824.

St. Catharines Standard fonds, 1970, 1974, 1988-1991, n.d.

The St. Catharines Standard started publication in 1891 under W.B. Burgoyne. It was subsequently purchased by Southam Newspapers, then Canwest Global Communications. Osprey Media took over the publication until June 1, 2007 when Quebecor acquired the company. The St. Catharines Standard celebrated its centennial in 1991 with mobile displays, a centennial logo and slogan, a Christmas card, an advertising campaign, a video and a centennial theme to regular promotions. As part of the activities, the Standard commissioned Brock University to produce a history of St. Catharines. This book entitled St. Catharines Canada’s Canal City is a popular book rather than an academic text. The authors have woven together stories of the past and present to showcase the character and personality of St. Catharines. The book is full of maps and photographs, many of which had not been seen in print before this time.

Letters to the Honourable John H. Dunn, 1837-1838

The recipient of the letters is John Henry Dunn who was born on St. Helena (a British territory island of volcanic origin located in the South Atlantic Ocean) in 1792 to John Charles Dunn and Elizabeth Bazette. He was married to Charlotte Roberts on May 4th, 1820 and they had 6 sons and 2 daughters. He came to Canada in 1820 in which year he became the Receiver General for Canada. He held this position until 1841.Charlotte died in 1835. In 1822 he was named to the Province’s Legislative Council. He was president of the Welland Canal Company from 1825-1833. In 1836 he was named to the executive council of Upper Canada but resigned 3 weeks later with fellow counselors when lieutenant governor Sir Francis Bond refused the advice of the council. Dunn was made the Receiver General for the newly formed Province of Canada in 1841, and was elected to represent Toronto in the legislative assembly that year. He married his second wife on March 9th, 1842. Her name was Sophie-Louise Juchereau Duchsnay. They had a son and a daughter. In 1843 he resigned, and was not re-elected in 1844. He returned to England with his family and died in London on April 21, 1854. Dunn was a supporter of the Welland Canal, St. Lawrence Canals and other public improvements. Between the passage of the Canada Trade Act and the Act of the Union he had tried to insure that projects received funding despite financial constraints. He claimed that he has saved Upper Canada from bankruptcy. His son, Alexander Roberts Dunn received the Victoria Cross for his role in the Charge of the Light Brigade at Balaclava. Dunn Street in Niagara Falls is named after John Henry Dunn. The town and township of Dunnville were also named for him. Sources: http://biographi.ca/009004-119.01-e.php?id_nbr=3889 http://www.niagarafrontier.com/cityfalls.html

Sawney's Letters, or Cariboo Rhymes 1864 to 1868

Poetry of James Anderson during his time in the Cariboo of British Columbia. He left Scotland for British Columbia during the gold rush.

Letters - Correspondence with John Diefenbaker, 1968

There is a telegram from John Diefenbaker congratulating Sean O'Sullivan on his recent election win as President of the Hamilton Young Progressive Conservatives. O'Sullivan was in Grade 11 at the time. The second correspondence is a reply from Sean O'Sullivan with appreciation to Diefenbaker for all his "encouragement and inspiration". The correspondence took place 19 March 1968 and 20 March 1968.

Article - St. Catharines Standard post race, 7 July 1952

A photograph and brief comment about the race results for Dorothy Rungeling. She is photographed next to George Belfry of Thompson Products (sponsor), Alice Little (co-pilot) and radio broadcaster Rex Stimers.

Letters of Administration - Estate of Isabel Woodruff

Letters of Administration dated March 29, 1902 in the estate of Isabel Woodruff instrument no. 2344. This is accompanied by a letter stating the validity of these papers (2 copies of the letter of validity), April 16, 1902.