{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Lab4sol

# Lab4sol - ,BERKELEY ,(SEMM Instructor:KhalidM.Mosalam...

This preview shows pages 1–3. Sign up to view the full content.

UNIVERSITY OF CALIFORNIA, BERKELEY Instructor: Khalid M. Mosalam Department of Civil and Environmental Engineering CE123: Design of RC Structures Structural Engineering, Mechanics and Material (SEMM) Spring Semester, 2009 CEE 123 Laboratory Project No. 4 (Solution) Problem 1.3 Given: A s = 8*1.27 = 10.12in 2 (Table A.1) A c = (12*12)-10.12 = 474in 2 f y = 60,000psi f c = 4000psi n = E s /E c = 8 ε c = ε s f c (psi) from Fig. 1.16 P c (Kips) f s (psi) from Fig. 1.16 P s (Kips) P Total (Kips) P c /P Total (%) P s /P Total (%) 0 0 0 0 0 0 85.00% 15.00% 0.0005 1600 758.4 15000 151.8 910.2 83.32% 16.68% 0.001 2600 1232.4 30000 303.6 1536 80.23% 19.77% 0.0015 3100 1469.4 45000 455.4 1924.8 76.34% 23.66% 0.002 3300 1564.2 57000 576.84 2141.04 73.06% 26.94% 0.0025 3400 1611.6 60000 607.2 2218.8 72.63% 27.37% 0.003 3400 1611.6 60000 607.2 2218.8 72.63% 27.37% 72.63% 72.63% 73.06% 76.34% 80.23% 83.32% 85.00% 0.00% 25.00% 50.00% 75.00% 100.00% 0 0.0005 0.001 0.0015 0.002 0.0025 0.003 Strain Steel Contribution Concrete Contribution

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
UNIVERSITY OF CALIFORNIA, BERKELEY Instructor: Khalid M. Mosalam Department of Civil and Environmental Engineering CE123: Design of RC Structures Structural Engineering, Mechanics and Material (SEMM) Spring Semester, 2009 Problem 3.4 Given: A s = 3*1.27 = 3.81in 2 (Table A.1) f y = 60,000psi f c = 4000psi b=12in d=21in h=24in n = E s /E c = 8 a) I g = bh 3 /12 = 12(24) 3 /12 = 13,800in 4 f r = 7.5 f c = 474psi M cr = (f r *I
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### Page1 / 5

Lab4sol - ,BERKELEY ,(SEMM Instructor:KhalidM.Mosalam...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online