State whether or not your beam selection passes the deflection checks.

 

LEADER: _____________________________________Grade_________ QP_________STUDENT NO________

 

Responsibility________________________________________________________________________

 

NAME: _______________________________________Grade_________ QP_________STUDENT NO________

 

Responsibility________________________________________________________________________

 

NAME: _______________________________________Grade_________ QP_________STUDENT NO________

 

Responsibility________________________________________________________________________

 

NAME: _______________________________________Grade_________ QP_________STUDENT NO________

 

Responsibility________________________________________________________________________

 

 

General Instructions

• Use this sheet as a cover and submit work on a separate sheet apart from your ASD term project. Neatness, orderliness, and professionalism will be part of your grade.
• Briefly describe each Team Member’s primary responsibility on this cover sheet. The entire team has responsibility for understanding the entire submission.

 

For Your Selected Beam using LRFD

 

Determine Loads

1. State the uniformly distributed dead (service) load (w_D) (NO CHANGE FROM ASD)
2. State the uniformly distributed live (service) load (w_L) (NO CHANGE FROM ASD)
3. State the uniformly distributed total (service) load (w_T) (NO CHANGE FROM ASD)
4. Determine the factored LRFD uniform (factored) load (w_u) by applying the following LRFD controlling load combination to w_D and w_L: [1.2 D + 1.6 L]
5. Determine the Reactions (R_u), Maximum Shear (V_u – required shear strength), and Maximum Moment ( M_u – required flexural strength)

 

 

Design the Beam

6. Calculate the LRFD required section modulus, Z_x
7. Select the beam from AISC Table 3-2 (W Shapes – Selection by Z_x) and complete the typical chart.

 

Shape	Available Section Modulus (Zx)	Required Section Modulus (Zx)		Available Flexural Strength (ΦbMpx)	Required Flexural Strength (Mu)

 

8. Check for shear and complete the typical chart.

 

Shape	Available Shear Strength (ΦvVnx)	Required Shear Strength (Vu)

 

 

9. Check for a) live load and b) total load deflection and complete the typical charts. Since deflection checks are performed with the service loads (w_D, w_L w_T), NOT THE FACTORED LOAD (w_u), the deflection formulae are the same for ASD and LRFD.

 

Shape	Live Load Maximum Deflection (dL)	Live Load Allowable Deflection ( ΔL)

 

 

 

 

 

 

 

Shape	Total Load Maximum Deflection (dT)	Total Load Allowable Deflection ( ΔT)

 

 

 

 

 

 

 

10. State whether or not your beam selection passes the deflection checks.

 

11. Compare your beam selection result with ASD.