| Show ISSUES BULLETIN ON BRICK ORICk State School of Mines Tests Utah Products and Publishes Results R suIts Tests on Brick the first of or a series o or of bulletins that are being published by bythe b bythe the state school of mines came out yes yesterday yesterday yesterday The bulletin shows the results of or a series serles of or tests on Utah bricks and an anthe the data given is valuable to the builder This bulletin will be followed by b others The first ones will have to do with the building materials manufactured in Utah The experiments were performed in the mechanical laboratory at the university by E H professor In me mc mechanical mechanical engineering and F C French assistant professor In civil engineering They were assisted by Kenneth Williams instructor in chemistry and Joseph C CHunter CHunter CHunter Hunter and O 0 A Peterson two seniors in the civil engineering course Many interesting determinations were made Ten bricks were selected at ran random random random dom from a lot of or fifty that were sent by each manufacturer in the state The crushing tests were made on the half bricks and it was determined that the average Utah wire cut brick supported pounds to the square inch the mot mottled mottled mottled red pressed brick pounds and the pressed brick pounds In summing up the report on the tests of or Utah bricks the report says It Is well known that Utah contains a great deal of ot good building brick clay day I and paving brick clay da and the manufacturers I can and do furnish an nn excellent I product but a careful examination of these results and a comparison with other results ought to inspire a still closer doser scrutiny scrutiny scrutiny tiny of methods of or manufacture and burn burning burnIng burning ing so that a still better product will willbe willbe be offered The Thel traverse strength is one of ot the best physical tests for brick as the brick breaks due to tension and the comparative comparative tive loads or tensile stresses show the I comparative toughness of ot the brick In Inmany Inmany t I many places as in the high chimneys the crushing strength Is one of or the main de determining determining tests A wide variation Is seen In the crushing tensile and shearing strengths of the various brick the wire cut brick being always stronger than the pressed brick The crushing strength of good brick should not be below I pounds per square Inch for tor ordinary work and should not be below pounds per square Inch for heavy structures The tensile strength of good brick tested as beams should not be below SOO to 1000 pounds per square Inch As a rule the pressed brick were the most porous but they the were not necessarily necessarIly necessarily the weakest in resisting the ac action action action tion of or the frost The wire cut brick have a L more e structure and split Ung king occurs along these fibers The amount of water absorbed by b brick is isen isan isen en an important consideration in its dura durability durability billt |
