(50 Points) You talk with the owner and he likes the idea of using two large...

 

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(50 Points) You talk with the owner and he likes the idea of using two large glulam beams as shown to carry the joist loads. Design the glulam beams using stress class 20F- 1.5E glulam material (see Table 5A in the wood supplement handout) and assume 5'-1/8" wide by 25'-1/2" deep glulam beam. Check bending and shear stresses, do not check deflection. If this beam does not work, what are your options to make it work without changing the stress class? Select one of these options and try to make it work. If your second attempt still fails, show your work and move on to Problem 3 after you price your more expensive answer. Pricing for glulam is about $4 per inch of depth per linear foot. For example: For a 25.5" deep beam, price will be $4*25.5" per linear foot $102/linear foot of beam length. Price out your final answer for use in the last problem. USE WITH TABLE 4A ADJUSTMENT FACTORS Design values in pounds per square inch (psi) Compression Compression parallel to grain Tension Shear Grading Rules Species and commercial Size parallel to grain perpendicular to grain Specific parallel Bending to grain grade classification Modulus of Elasticity Gravity Agency Fo F. Fas Fa E Emin DOUGLAS FIR-LARCH Select Structural No. 1& Btr No. 1 No. 2 No. 3 Stud Construction Standard 1,500 1,000 180 625 1,700 1,000,000 000.000 1,200 800 180 625 1,650 1,800.,000 000.000 2" & wider 1,000 875 180 625 1,600 1,700,000 020.000 675 180 625 1,350 1,600,000 1,400,000 580,000 510,000 WCLIB 528 325 180 625 775 0.00 WWPA 1,400,000 1,500,000 2" & wider 700 460 180 625 860 610.000 550,000 510,000 1.000 180 025 1,650 1.400 1.400.000 1,300,000 2-4 wide 575 375 180 625 Ubity 276 175 180 625 470 O00 HEM-FIR 1,600 1,350 Select Structural No. 1& Btr No. 1 No. 2 No. 3 Stud Construotion Standard Usity 1,400 1,100 025 150 406 1,600,000 1,600,000 580,000 725 150 406 550,000 2 & wider 075 825 150 405 1,250 1,300 1,500,000 1,300,000 560,000 850 525 150 405 470,000 WCLUB 1,200.000 1,200.000 1.300,000 440.000 440.000 500 300 150 405 725 0.43 WWPA 2 & wider 876 400 150 405 800 075 B00 150 405 1,550 470,000 -4" wide 560 225 150 405 1.300 440,000 1,200,000 1,100,000 250 150 150 405 850 400.000 (50 Points) You talk with the owner and he likes the idea of using two large glulam beams as shown to carry the joist loads. Design the glulam beams using stress class 20F- 1.5E glulam material (see Table 5A in the wood supplement handout) and assume 5'-1/8" wide by 25'-1/2" deep glulam beam. Check bending and shear stresses, do not check deflection. If this beam does not work, what are your options to make it work without changing the stress class? Select one of these options and try to make it work. If your second attempt still fails, show your work and move on to Problem 3 after you price your more expensive answer. Pricing for glulam is about $4 per inch of depth per linear foot. For example: For a 25.5" deep beam, price will be $4*25.5" per linear foot $102/linear foot of beam length. Price out your final answer for use in the last problem. USE WITH TABLE 4A ADJUSTMENT FACTORS Design values in pounds per square inch (psi) Compression Compression parallel to grain Tension Shear Grading Rules Species and commercial Size parallel to grain perpendicular to grain Specific parallel Bending to grain grade classification Modulus of Elasticity Gravity Agency Fo F. Fas Fa E Emin DOUGLAS FIR-LARCH Select Structural No. 1& Btr No. 1 No. 2 No. 3 Stud Construction Standard 1,500 1,000 180 625 1,700 1,000,000 000.000 1,200 800 180 625 1,650 1,800.,000 000.000 2" & wider 1,000 875 180 625 1,600 1,700,000 020.000 675 180 625 1,350 1,600,000 1,400,000 580,000 510,000 WCLIB 528 325 180 625 775 0.00 WWPA 1,400,000 1,500,000 2" & wider 700 460 180 625 860 610.000 550,000 510,000 1.000 180 025 1,650 1.400 1.400.000 1,300,000 2-4 wide 575 375 180 625 Ubity 276 175 180 625 470 O00 HEM-FIR 1,600 1,350 Select Structural No. 1& Btr No. 1 No. 2 No. 3 Stud Construotion Standard Usity 1,400 1,100 025 150 406 1,600,000 1,600,000 580,000 725 150 406 550,000 2 & wider 075 825 150 405 1,250 1,300 1,500,000 1,300,000 560,000 850 525 150 405 470,000 WCLUB 1,200.000 1,200.000 1.300,000 440.000 440.000 500 300 150 405 725 0.43 WWPA 2 & wider 876 400 150 405 800 075 B00 150 405 1,550 470,000 -4" wide 560 225 150 405 1.300 440,000 1,200,000 1,100,000 250 150 150 405 850 400.000

Answer rating: 100% (QA)

Design of Ghulam Beam Length of the beam 30 feet Joist Spacing 16 inch There will be point Load acting on the joist at every 16 spacing but since the loads are acting so close on the beam it is assume... View the full answer