Using the design chart below. Estimate the SN if W18=10x10^6, R=90%, So=0.35, Mr-10000Psi, APSI=3.Use the chart below.TLOverallstandarddeviation, S.TLDesign serviceability loss, APSI|50105.099.940200.21099|1.00.40.50.60.6 E0.50.11.5'0.052.02.53.060509 87 65 4 3 2Example:6.5 5.5 4.5 3.5 2.51.5W18 = 5 x 106R = 95%S, = 0.35MR = 5000 lb/in?APSI = 1.9Design structural number, SN%3D%3DSolution: SN = 5.0Reliability, R (%)Estimated total 18-kip-equivalentsingle-axle load applications, W8 (millions)Effective roadbed soilresilient modulus, M2 (kips/in?)- 1.0- What is the estimated SN of thedata given? (1 Decimal point) *Your answer

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Engineering

Civil Engineering

What is the estimated SN of the data given? (1 Decimal point) Your answer

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

Introduction to Engineering Design

Students are often confused with engineering and design. The term engineering design has two words with different meanings, engineering, and design. The term engineering implies applications of laws and principles of science to design and analyze physical structures and components. In civil engineering, students apply the concept of physics and chemistry to design and build structures and buildings. In engineering disciplines, the term design means determining the dimensions, loads, and associated influences on the component due to the applied loads such as stresses and deformations. The estimation of such parameters is crucial to make the component or structure foolproof.

Question

Using the design chart below. Estimate the SN if W18=10x10^6, R=90%, So=0.35, Mr-
10000Psi, APSI=3.
Use the chart below.
TL
Overall
standard
deviation, S.
TL
Design serviceability loss, APSI
|50
10
5.0
99.9
40
20
0.2
10
99
|1.0
0.4
0.5
0.6
0.6 E
0.5
0.1
1.5
'0.05
2.0
2.5
3.0
60
50
9 87 65 4 3 2
Example:
6.5 5.5 4.5 3.5 2.5
1.5
W18 = 5 x 106
R = 95%
S, = 0.35
MR = 5000 lb/in?
APSI = 1.9
Design structural number, SN
%3D
%3D
Solution: SN = 5.0
Reliability, R (%)
Estimated total 18-kip-equivalent
single-axle load applications, W8 (millions)
Effective roadbed soil
resilient modulus, M2 (kips/in?)
- 1.0-

What is the estimated SN of the
data given? (1 Decimal point) *
Your answer

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