×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Are you an
Engineering professional?
Join Eng-Tips Forums!
• Talk With Other Members
• Be Notified Of Responses
• Keyword Search
Favorite Forums
• Automated Signatures
• Best Of All, It's Free!

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

#### Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

# How to modelate SOIL with springs?

## How to modelate SOIL with springs?

(OP)
Which parameters of the soil I must to know to modelate it with springs in the ETABS?
Could you explain me?

### RE: How to modelate SOIL with springs?

Sepultura

Soil springs - Structure directly on soil: Then, Subgrade modulus of soil.

-Murali

### RE: How to modelate SOIL with springs?

It's same as when you calculate a beam on elastical supports, you represent soil by coefficient of reaction.
Soil - loose     k=0.1-0.5 kg/cm3
- medium dense k=0.5-5
- dense        k=5-10
- compact      k=10-20
- hard         k=20-100
you select joints at base then assign->point spring->kx ,ky,kz...etc.
You must add your fondations as a shell model (slab) the joint correspond to shell mesh.
i hope this help.

### RE: How to modelate SOIL with springs?

(OP)
Is there any relation between coefficient of reaction (kg/cm3) of the soil and resistance soil support (kg/cm2)?

### RE: How to modelate SOIL with springs?

Yes there is a relation between coeficient of reaction and resistance of soil p=-k*y
where y is the displacement
p is the pression on the soil
k is the coefficient of reaction.

#### Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

#### Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

#### Resources

Low-Volume Rapid Injection Molding With 3D Printed Molds
Learn methods and guidelines for using stereolithography (SLA) 3D printed molds in the injection molding process to lower costs and lead time. Discover how this hybrid manufacturing process enables on-demand mold fabrication to quickly produce small batches of thermoplastic parts. Download Now
Examine how the principles of DfAM upend many of the long-standing rules around manufacturability - allowing engineers and designers to place a partâ€™s function at the center of their design considerations. Download Now
Taking Control of Engineering Documents
This ebook covers tips for creating and managing workflows, security best practices and protection of intellectual property, Cloud vs. on-premise software solutions, CAD file management, compliance, and more. Download Now

Close Box

# Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

• Talk To Other Members
• Notification Of Responses To Questions
• Favorite Forums One Click Access
• Keyword Search Of All Posts, And More...

Register now while it's still free!