Determine the factored LRFD uniform (factored) load (wu) by applying the following LRFD controlling load combination to wD and wL: [1.2 D +

Responsibility________________________________________________________________________

NAME: _______________________________________Grade_________ QP_________STUDENT NO________

Responsibility________________________________________________________________________

NAME: _______________________________________Grade_________ QP_________STUDENT NO________

Responsibility________________________________________________________________________

NAME: _______________________________________Grade_________ QP_________STUDENT NO________

Responsibility________________________________________________________________________

General Instructions
o 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.
o 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 (wD) (NO CHANGE FROM ASD)
2. State the uniformly distributed live (service) load (wL) (NO CHANGE FROM ASD)
3. State the uniformly distributed total (service) load (wT) (NO CHANGE FROM ASD)
4. Determine the factored LRFD uniform (factored) load (wu) by applying the following LRFD controlling load combination to wD and wL: [1.2 D + 1.6 L]
5. Determine the Reactions (Ru), Maximum Shear (Vu – required shear strength), and Maximum Moment ( Mu – required flexural strength)

Design the Beam
6. Calculate the LRFD required section modulus, Zx
7. Select the beam from AISC Table 3-2 (W Shapes – Selection by Zx) 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 (wD, wL wT), NOT THE FACTORED LOAD (wu), the deflection formulae are the same for ASD and LRFD.

Shape Live Load
Maximum Deflection
(L) Live Load
Allowable Deflection
( ΔL)

Shape Total Load
Maximum Deflection
(T) 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.