Wall Forms - Concrete Construction - Laboratory 7 | BCM 38000, Lab Reports of Civil Engineering

Download Wall Forms - Concrete Construction - Laboratory 7 | BCM 38000 and more Lab Reports Civil Engineering in PDF only on Docsity! BCM 380 S0 Spring 2007 Lab #7 Wall forms avav GIVISION Lecture division 2 Show all calculations. State and explain all assumptions. List all tables and charts that are used 1, A wall will be constructed using form panels described below. The wall dimensions are 90 feet long, 18 inches thick and 16 feet high. The concrete will be placed with a pump having a capacity of 34 CY/hour. If the concrete is mixed with a retarded and has a temperature of 84 degrees F when it is pumped into the form what is the maximum pressure in the form at any time during the pour? Where in the form does this maximum pressure occur? Draw and fully label the envelope of maximum pressure for the wall form. 2. The forms to be used for constructing the wall are built as gang panels that are 16 feet long and 16 feet high. Each panel has 1-1/8” BB Plyform Structural I sheathing that is oriented with its long panel dimension vertical. The sheathing is backed by 2x4 studs spaced at 12 inches on centers. Horizontal double wales constructed of 2x8 lumber are spaced four feet apart with the top and bottom wales located 6 inches from the top and bottom of the form panels. Wall ties are spaced every four feet along the wales with the first ties on each panel located two feet from the panel edge. What is the span of the plywood sheathing? What maximum pressure is applied to the plywood sheathing? What is the allowable safe capacity for this sheathing if the deflection is limited to L/270? Is the plywood sheathing adequate for this use? 3. Draw a free body diagram of a typical stud showing the load on the stud and its supports. The loading diagram for the stud will have the same shape as the envelope of maximum pressure. 4. What type of loading is applied to the wales in this wall form? 5. What length of stud does a typical wale support? Assuming that the pressure in the form is a constant maximum value from top to bottom of the form (i.e. does not decrease as you showed in #1) find load that a stud applies to a typical wale. 6. Draw a free body diagram of a typical wale showing the loads and the support reactions. 7. Find the magnitude of the equivalent distributed load for a typical wale. Would this be a good approximation of the loading on the wale? Fully explain your answer. 8. What is the tributary area for a typical wall tie? (hint: define the tributary area by going half way to the next tie in all directions.) What is the maximum load in any of the ties in the wall form? uy yu! 380Lab7 Spring 2007[1]  al gat =d kat Ol paz <( He Lolth hh) <4 a ch = mem ba, jparreddng puis 46 ~abva i Py Sent Wyk orp. quod 2 40 spvo) pryeet venue? sé wh ih St ag zea) 28d tealLas 2 CD = 0 qi Thole e AGL (4 rao4) 389 sean Poy] t?ZLoLs “MY Lo tl ~ Ginrerys poowlid a (z base? Aeiswayo yowroy aucge — 484 201 HE . = 1S S11 - os! ; dog my vory SVL] * Troi LA UUol & OT ~(rsAKP4 OSI) TPO =d nd #9 2Lol) ( @ayeeet + sm, vost)ul rare ae (ope + aire, 1281) poe ’ = J Sey = sei] Foe 2 RC ey {0 PP ae 7a “°7