May I ask if the answer for this problem is q =11.44? It think the answer key is wrong of otherwise, kindly explain it to me please. Based on my undrstanding the distance should be (10-7.56) +0.120 but the book says its 2.04, how did it got the 2.04? Thank you A, 12(1) 12Ay 12(1) 12FirstA A, A+AyA12 12+6A 30Surfacthe generag peOWhenSolution:n 13.5AreaAy A+Ag2 +Asys30y 12(0.5)+y-5.7 in.4.470.6412(7) + 6(13.5)2.56Q=A;Y1 +A2Y2Q=6(1)(7.8) + 7.3(1)(3.65)Q=73.4 in10.12y=7.56250 Problem:A.Two 10 in.-15.3 channels are welded togetheras shown. Find the moment of area of theupper channel about the horizontal centroidalaxis x of the entire section.A1=D4.47A2 = 4.47A 8.94Y2 =10.120%3D2.68Ay DA,Y1 + A2Y28.94ỹ = 4.47(5) + 4.47(10.12)y = 7.56Q= AyQ=4.47(2.04)Q = 9.12 in2

You are correct as per the diagram and calculations shown

May I ask if the answer for this problem is q =11.44? It think the answer key is wrong of otherwise, kindly explain it to me please. Based on my undrstanding the distance should be (10-7.56) +0.120 but the book says its 2.04, how did it got the 2.04? Thank you

May I ask if the answer for this problem is q =11.44? It think the answer key is wrong of otherwise, kindly explain it to me please. Based on my undrstanding the distance should be (10-7.56) +0.120 but the book says its 2.04, how did it got the 2.04? Thank you

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Concept explainers

State Plane Coordinate Systems

The state plane coordinate system (SPCS or SPS) is a collection of 124 coordinate systems or geographic zones prepared for particular regions of the U.S. Every state consists of one or more than one state plane zone, the boundaries of which generally follow the county lines. Inside the U.S., there are 110 zones in total, 10 more zones in Alaska, 5 in Hawaii, and 1 for Puerto Rico and US Virgin islands. The system is extensively used for geospatial and geographic data assembling by the state and local governments.

Question

A, 12(1) 12
Ay 12(1) 12
First
A A, A+Ay
A12 12+6
A 30
Surfac
the genera
g pe
OWhen
Solution:
n 13.5
Area
Ay A+Ag2 +Asys
30y 12(0.5)+
y-5.7 in.
4.47
0.64
12(7) + 6(13.5)
2.56
Q=A;Y1 +A2Y2
Q=6(1)(7.8) + 7.3(1)(3.65)
Q=73.4 in
10.12
y=7.56
250 Problem:
A.
Two 10 in.-15.3 channels are welded together
as shown. Find the moment of area of the
upper channel about the horizontal centroidal
axis x of the entire section.
A1=D4.47
A2 = 4.47
A 8.94
Y2 =10.120
%3D
2.68
Ay DA,Y1 + A2Y2
8.94ỹ = 4.47(5) + 4.47(10.12)
y = 7.56
Q= Ay
Q=4.47(2.04)
Q = 9.12 in2

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