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O-1952-429
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O-1952-429
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Last modified
11/2/2016 3:38:19 PM
Creation date
10/23/2006 5:09:53 PM
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Legislative Records
Legislative Type
Ordinance
Date
9/9/1952
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<br />4 <br /> <br />. <br /> <br />. <br /> <br />S3 <br /> <br />L1!l <br /> <br />~ <br /> <br />Numbers in parenthesis <br />details of protection refer to <br />tables, after the notes. <br /> <br />U.L. refers to <br /> <br />Underwriters' <br /> <br />Laboratories, Inc. <br /> <br />(103) <br />No. T-304, <br /> <br />given in the tables under details of construction or <br />references to sources of data listed at the end of the <br /> <br />Letters appearing in the <br />given at the end of the tables. <br /> <br />.' <br /> <br />. <br /> <br />(102) <br />No. T -346, <br /> <br />Report of Raymond E. Davis, Consulting Engineer, <br />March 22, 1955 (unpublished). <br /> <br />Ohio State University Engineering Experiment <br />February 4, 1955 (unpublished). <br /> <br />Ohio State University Engineering Experiment <br />December 29, 1954 (unpublished). <br /> <br />Station <br /> <br />Project <br /> <br />Station <br /> <br />Project <br /> <br />Explanatory Notes and References <br />tables as refer <br /> <br />superscripts <br /> <br />to explanatory notes <br /> <br />Thickness of plaster is measured from the face of the plaster base, except <br />that with metal lath it is measured from the back of the lath unless otherwise <br />stated., The usual 1/16 in. white or finish coat of plaster may be included in the <br />required plaster thickness. <br /> <br />Ceilings of plaster on metal lath, unless otherwise <br />ratings, may be in contact, furred, or suspended. <br /> <br />specified <br /> <br />in <br /> <br />individual <br /> <br />Plaster of gypsum and sand may be richer in <br />for a given rating unless otherwise indicated. <br /> <br />Plasters with vermiculite or perlite aggregate <br />specified for a given rating. <br /> <br />must <br /> <br />be of <br /> <br />the proportions <br /> <br />as <br /> <br />(95) "Fire Tests of Steel Columns Protected with Siliceous Aggregate <br />Concrete," National Bureau of Standards Report BMS 124, 1951. <br /> <br />(96) Underwriters' Laboratories, Inc. Standard for Concrete Masonry Units. <br />Subject 618, 1953. <br /> <br />(97) Ohio State University Engineering Experiment Station Project No. <br />T-1l8, Reports No. 48 and 48-A, May, 1951 (unpublished). <br /> <br />(98) Ohio State University Engineering Experiment Station Project No. <br />T-l64, August, 1950 (unpublished). Test results in brief form published in <br />Bulletin of the Board of Standards and Appeals of the City of New York, <br />December 19, 1950. <br /> <br />(100) Ohio State University Engineering Experiment Station <br />No. T -316, October 25, 1954 (unpublished). <br /> <br />(101) <br />California, <br /> <br />University of <br /> <br />Project <br /> <br />Plaster <br />for a given <br /> <br />unless <br /> <br />of cement and sand may be richer <br />rating unless otherwise indicated. <br /> <br />gypsum <br /> <br />cement <br /> <br />content than <br /> <br />content <br /> <br />than <br /> <br />specified <br /> <br />specified <br /> <br />(93) "Fire Tests of Brick <br />BMS 143, November 30, 1954. <br /> <br />(94) Based on test data <br />testing laboratory. <br /> <br />(88) Based on test <br />testing laboratory. <br /> <br />(89) Ohio State University Engineering <br />T-99, March, 1952 (unpublished). <br /> <br />(90) Based on test data obtained from <br />testing laboratory. <br /> <br />(91) "SCR Brick Wall Fire Resistance Test" by Ohio State University <br />Engineering Experiment Station, Research Report No.2. Structural Clay Prod- <br />ucts Research Foundation, Sept. 22, 1952. <br /> <br />"Fire Tests of Steel Columns Encased With Gypsum Lath <br />National Bureau of Standards Report BMS 135, 1953. <br /> <br />Walls," National Bureau of Standards <br /> <br />Plaster mixes are designated as follows: "1 :2, 1:3 gypsum and sand plaster" <br />which indicates two coats of plaster, the first or scratch coat made of 1 part <br />gypsum to 2 parts sand, and the second or brown coat of 1 part gypsum to 3 parts <br />sand. <br /> <br />Plaster <br /> <br />proportions <br /> <br />are by <br /> <br />weight <br /> <br />otherwise <br />ill <br /> <br />indicated. <br /> <br />(92) <br />Plaster," <br /> <br />obtained <br /> <br />from <br /> <br />unpublished <br /> <br />report <br /> <br />of <br /> <br />recognized <br /> <br />Report <br /> <br />and <br /> <br />Plaster <br /> <br />Ceiling constructions described under Floor and Ceiling Constructions cannot <br />be used interchangeably with other floor constructions to obtain the fire resistance <br />rating of the floor and ceiling construction from which the ceiling construction <br />was taken. <br /> <br />~ <br /> <br />unpublished <br /> <br />report <br /> <br />of <br /> <br />recognized <br /> <br />,. <br /> <br />'~ <br /> <br />.; <br /> <br />Experiment <br /> <br />Station <br /> <br />Project <br /> <br />No. <br /> <br />Ceiling Constructions <br /> <br />FIREIISTANCE <br /> <br />RATINGS <br /> <br />e <br /> <br />e <br /> <br />data <br /> <br />FIRE RESISTANCE <br /> <br />obtained <br /> <br />from <br /> <br />unpublished <br /> <br />. <br /> <br />RATINGS <br /> <br />report <br /> <br />of <br /> <br />recognized <br />
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