REINFORCED CONCRETE DESIGN MIDTERMS QUESTIONS WITH 100% CORRECT ANSWERS

Analysis of SRB:


Step 4:


Formula for nominal flexure strength Mn?


Give this one a try later!


Mn = As fy [d - (a/2)]

, Note:
If SDNY, use fs.




Analysis of T-Beams


Step 5:


Stress Check; If still SDNY after changing assumptions, use Yarignon's Theorem.


A_T * ȳ = summation(An Yn)


Formula for Aconc and Z?


Give this one a try later!


Aconc * ȳ = Af(tf / 2) + Ab(a_c / 2)

Z=d-ȳ




Design of SRB:


Step 1:


Solve for ρmin and ρmax.


2015 formulae?


Give this one a try later!


ρmin = 1.4 / fy = [(0.25)(√f'c)] / fy

ρact = As / bd

, ρmax = 0.85(β1)(f'c / fy)(3/7)




Analysis of T-Beams


Step 1:


Finding bf.


For interior:


Give this one a try later!


Use the least of the following:


bf = bw + 16t
bf = bw + (s1/2) + (s2/2)
bf = bw + (ln/4)




Analysis of T-Beams


Step 6:


Solve for the maximum moment Mu.


Formula for Mu?


Give this one a try later!


Mu = As fy Z