12-42 The simply supported beam is built up from three boards by nailing them together as shown. The wood has an alkıwable shear stress of Ta = 15 MP, and an allowable bending stress of a= 9 MPa The nails are spaced at s= 75 mm, and cach has a shear strength of 15 kN Determine the maximum alkowable force Pthat can be applied to the beam. 100 mim 25 mm 25 mm- 200 mm mim
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- The nails are on both sides of the beam and each can resist a shear of 3 KN. In addition to the distríbuted loading, determine the maximum load P that can be applied to the end of the beam. The nails are spaced 200 mm apart and the allowable shear stress for the wood is Tallow4MPa. 3.Om 300m 30m 300mat BommDetermine the minimum dimension a to the nearestmm of the beam's cross section to safely support the load.The wood has an allowable normal stress of u(allow) = 10 MPaand an allowable shear stress of T(allow) = 1 MPa.Determine the maximu m allowable lo ad P that 1-90. can be safely supported by the frame if t= 30 m m an d 90 mm. The wood has a normal fa ilure stress of b = MPa, and a she ar failure stress o f Tfall Ofail 4 2 10.5 MP a. Use a factor of safety again st failure of 2. 75 mm 75 mm B 30
- The beam is constructed from three boards. (Figure 1) The allowable shear stress for the wood is τallow=465 psiτallow=465 psi. Each nail can resist a shear force of 395 lblb. -Determine the maximum loads P that it can support. -What is the maximum allowable spacing ss of the nails used to hold the top flange to the web? (Consider only regions AC and BD.) -What is the maximum allowable spacing ss of the nails used to hold the bottom flange to the web? (Consider only regions AC and BD.)Determine the minimum dimension a to the nearest mm of the beam's cross section safely support the load.The wood has an allowable normal stress of 10 MPa and an allowable shear stress of 1 MPa.Shear stress #1- Two blocksy wood, 6Omm nidi ard 30mm thdk, are glued fogether. Det. The maximum value P f the Tengite sfreek 7 The urod is limited f 24° with the hoirontal. to 6mpa ard the shearing stress on The glued joint and the sheanng sfres parallie to the Cimited to 6mpa. The mafies an angle is 4 m Pa. rglued, joint Gomm 600 720mm
- The Composite section &hown, is subjectuol to a sagging bevn diny mom ent of Loo KNom, Determine the maximum tensite oind Compressive Dlress in each material. Es / Et = 20 Tio 220 ns: (Ieg.)tim = i, 665.2 xlo mm 1. >Hm S.SIMPA, (6c)Hirm. = 4.4M Pn, (ot)st.=134.1Mpa,ldc)st,=16596 M pa. 6kel I20 %3D %3D rio| 130Answer the following for the section at Point D Only Calculate the distributed load "w" that: Will cause the section crack Will cause the reinforcement to yield. Material Properties: F'c = 5000 psi Fy = 60000 psi Es = 29000000 psi Ln = 27 ft L wl₂² 16 wl,² 14 CD L wl,2 vl₁² 10 11 win² 16 h: 28 in A=4 in² b=14 in n d: 25 inSubject: Steel design- Bolted Steel Connection *Use NSCP 2015 formula/guide to solve this problem *Use Handwritten A plate having a width of 400 and a thickness of 20mm is to be connected to two plates with thickness of 12mm by four rivets. The allowable shear stress for the rivets is 150 MPa and for bearing is 1.35 Fy. If the yield strength and the ultimate strength is 248 MPa and 400 MPa respectively. Determine the Following: a.) Required diameter of rivets w/o exceeding the aloowable stress in the shear. b.) Required diameter of rivets w/o exceeding the allowable stress in bearing. c.) Required diameter of rivets w/o exceeding the allowable stress in tension.
- Determine the minimum dimension b to the nearest mm of the beam’s cross section to safely support the load. The wood has an allowable normal stress of 12 MPa and an allowable shear stress of 1.5 MPaProblem 4: Find the design moment strength for the following section: f'c = 7000 psi Es = 29,000 ksi 39" 3" kik 15" ● ● ● o, stress 3" || c. Mn = 5" 30" 5" 4 # 8 bars a. Draw the stress-strain curves for the reinforcing steel. b. Label A's = (2) #8 bars, Grade 40 A,= (4) #8 bars, Grade 60 Strain 1. the yield point(s) (including the stress, strain), 2. where is the linear-elastic region. Label with words. 3. slope of the linear-elastic region. Indicate the magnitude, with units. k-ft Stress €, strainDetermine the shear Load that act on the fillet weld that joining two plates together if the working stress is 11300 Ib/in? Throat