3. The 500-kg uniform beam is subjected to the three external loads shown. Compute the reactions at the support point O. The x-y plane is vertical. 0 A 11.4 KN 1.2 m-+ 1.8 m 15 kN-m B . 1.8 m 30° 3 kN

6. What are the four components of the corrosion process? Are all four of these components typically present in a reinforced concrete structure? explain why corrosion does not always occur in reinforced concrete. explain which components are missing and why. If so, If not,

Discuss the pros and cons of JRCP versus CRCP.

Us Standard Sieve No. Sieve Opening (mm) Weight Retained (g) % Retained on Sieve % Passing Sieve 4 4.75 12.7 6.2 93.8 10 2 24.8 12.1 81.7 20 0.85 21.5  10.48  71.24 40 0.425 38.8  18.92  52.33 60 0.25 23.8  11.60  40.73 100 0.15 19.5  9.51  31.23 200 0.074 46.7  22.76  7.463 Minus 200   17.3  8.44  0 Total   205.1     for D10 and D60 calculate the k value utalizing Hazen's approxoimation. c=100