CIV100H1 Lecture Notes - Lecture 29: Kwin, Pennsylvania Route 18, Neutral Axis
Document Summary
Civ100 lecture 29- examples on stress blocks. Stress = f/a = 1800n / (30mm * 10mm) = 6mpa. Compression and tension are equal opposites and the sum of compression and tension equal to zero. Moment is equal to either cd (distance between two forces) or td. C1 = 60mpa * 80 mm * 100mm = 480kn. C2 (triangle section = [(60mpa * 80 mm)/2] * 100 mm = 240kn. C = 480 kn + 240kn = 720 kn (magnitude) To use this method, you need to find out the distance between both couples: to look for distance between c2 and t2, c2 acts 2/3 from a distance, o. M = 480kn * 0. 24m + 240kn * 0. 1067m = 140. 8knm. What is p: point load beam at the top, sum moments about q and set to 0. Mq + 6kn/m ( 1. 1m)( 0. 55m) (8 + p/3 ) ( 3. 1m) = 0. 1408 = 21. 17 + 1. 0333p p = 115. 8kn.
