Identifier: designofuniversi00hass (find matches)
Title: Design of a university armory
Year: 1910 (1910s)
Authors: Hassenstein, Carl Frederic Porterfield, Arthur Tucker
Subjects: Armories Theses
Publisher:
Contributing Library: University of Illinois Urbana-Champaign
Digitizing Sponsor: University of Illinois Urbana-Champaign

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eep purlins being required. The deep purlins are of a depth equal to distance betweenthe upper and lower chords and are composed of angles forming ——--= a Warren truss. The small purlins are composed of anglesforming a double intersecting Warren truss. The tie rodsholding the legs in place will be placed in the floor and willconsist of 3 - 4 x i eye-bars* The eye-bars will be madeof convenient length held together by pins. Owing to theamount of metal necessary and the ease of making connectionat the end, the eye-bar was considered as the most economicalform of tie. No steel wind bracing was considered necessary in theplane of the roof* The rigidity of the roof slab being sufficientto transmit all the stress to the adjoining walls. - Steel Specifications - Unit Stresses:Shear,Tension,Compression,Combined,Least l/r, Minimum thickness metal,Minimum angle For tension angles only one legunless both legs are fastened. 30000#16000#16000 - 70 x l/rP/A + Mc/I120 i inch,considered effective
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j, (15 Mem. Stress Mem. Streas Approz Max length Stress a-1 _ 2500 a1 >-l« + 6000 3-5 t 6000 a-2 t- 3400 a i-31 f 5500 3»-0 + 5500 a-4 + 43500 a1 >-4» + 66000 3»-0 + 66000 a-fi + 97000 a1 -6» +137000 3»-0 +137000 a-8 a -8« +188000 13»-0 +188000 b-13 + 60000 b1 -13« + 81000 lO-O + 81000 0-14 + 57000 c -14 ■ + 80500 10»-0n + 80500 d-16 + 57300 d »-16« + 69000 9»-0» + 59000 e-18 + 13500 e1 »-18» + 38000 8,-0,» + 38000 f-30 - 5500 f« -30* + 3000 6»-0* - 5500 g-32 - 30500 g -33 ■ - 19300 6«-0 - 30500 h-24 - 39000 h« >-34» - 34300 e-o - 34300 j-36 - 39500 4 1 —36 1 - 58500 6-0 - 38500 k-28 - 33500 k« -38« - 37500 6»-0 - 37500 m-30 - 30000 m -301 - 31500 4»-0 - 31500 m-31 - 33000 m -311 - 35000 f+l £ mm m - 35000 Y-l -143000 Y1 >-l« -168500 -168500 Y-3 -183000 Y« -3» -318000 -318000 Y-6 -333000 Y1 i-5» -379000 5»-0» -379000 Y-7 -383000 Y1 »-7» -340000 3»-0 -340000 Y-9 Y »-9» -131000 13»-6* -131000 Y-13 -163000 Y1 -13 • -300000 7,-8 -

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