UrbanPro
true

Learn ETABS from the Best Tutors

  • Affordable fees
  • 1-1 or Group class
  • Flexible Timings
  • Verified Tutors

Search in

Stiffness Modification In Analysis

Premjit Vasudevan
29/05/2017 0 0

Stiffness modification: Significance In IS 456,as per Cl.22.3 gross sectional properties are allowed to be used (if consistently used for all members) for force calculations. For deflections, 22.3.2 allows only the usage of cracked mom of inertia. What's wrong if we use uncracked mom of inertia? Concrete has inherent property of cracking what ever we do. So if we dont capture this, we are making the supports more stiff than real, which means support moments are more which means the span moments and deflections are lesser in the model than real. To take care of this, in tall buildings, generally cracked mom of inertia is recommended for both force calculations and deflection checks. However, it is not easy to formulate this for all members as crack widths varies. So, ACI makes it more generic based on what is seen actually and uses a flat value.

0 Dislike
Follow 0

Please Enter a comment

Submit

Other Lessons for You

Introduction To Electric Drives
Drives are employed for systems that require motion control e.g. transportationsystem, fans, robots, pumps, machine tools, etc. Prime movers are required in drive systems toprovide the sources: diesel...

Types of forces and moments of force
A free body diagram is a diagram showing all the forces and moments of forces acting on an object. We distinguish between two types of objects: 1. Particles that have no spatial extent and thus have no...

Armature Core
It houses the armature conductors or coils and causes them to rotateand hence cut the magnetic flux of the field magnets. In addition to this, its mostimportant function is to provide a path of very low...

How To Prepare For Viva Voce Of Lab Experiments/Project Presentations?
Instruction to B.Tech/M.Tech/B.Pharm/M.Pharm/M.Sc/B.Sc/MBBS/BDS/MDS/LLB/LLM students on Lab/Project Viva voce: No tension, only attention. Prepare for viva as if the examiner is an expert in your project/lab...

Digital Multimeter
• DMM is a measuring instrument • An ammeter measures current • A voltmeter measures the potential difference (voltage) between two points • An ohmmeter measures resistance •...

Looking for ETABS Training?

Learn from Best Tutors on UrbanPro.

Are you a Tutor or Training Institute?

Join UrbanPro Today to find students near you
X

Looking for ETABS Classes?

The best tutors for ETABS Classes are on UrbanPro

  • Select the best Tutor
  • Book & Attend a Free Demo
  • Pay and start Learning

Learn ETABS with the Best Tutors

The best Tutors for ETABS Classes are on UrbanPro

This website uses cookies

We use cookies to improve user experience. Choose what cookies you allow us to use. You can read more about our Cookie Policy in our Privacy Policy

Accept All
Decline All

UrbanPro.com is India's largest network of most trusted tutors and institutes. Over 55 lakh students rely on UrbanPro.com, to fulfill their learning requirements across 1,000+ categories. Using UrbanPro.com, parents, and students can compare multiple Tutors and Institutes and choose the one that best suits their requirements. More than 7.5 lakh verified Tutors and Institutes are helping millions of students every day and growing their tutoring business on UrbanPro.com. Whether you are looking for a tutor to learn mathematics, a German language trainer to brush up your German language skills or an institute to upgrade your IT skills, we have got the best selection of Tutors and Training Institutes for you. Read more