Member
Posts: 5
Registered: ‎06-26-2013
Message 1 of 6 (183 Views)

# Corridor Volume Concepts

183 Views, 5 Replies
09-19-2013 05:45 AM

I am new to C3D corridors and need some help with a functionality concept.

I have a simple alignment (10 elements, 5 curves), an existing surface model from survey data, a proposed profile with 5 elements, 2 vertical curves, and a basic assembly (BasicLane and BasicSideSlopeCutDitch both sides).

Is there a way to produce average end area volumes from this WITHOUT creating a surface model from the corridor model?  I can open the Corridor Section Editor and view my cross sections, so it seems that all the necessary information is present to do this.  What am I missing on this?

*Expert Elite*
Posts: 1,367
Registered: ‎09-15-2010
Message 2 of 6 (181 Views)

# Re: Corridor Volume Concepts

09-19-2013 05:56 AM in reply to: mabbas

The surfaces are required for corridor volume calculations.

Start by reading the help for Calculating Earthwork Volumes from Corridor Models.

Jay

C3D 2012 SP3 & C3D 2014 SP1
Win 7 Professional 64 Bit
Member
Posts: 5
Registered: ‎06-26-2013
Message 3 of 6 (172 Views)

# Re: Corridor Volume Concepts

09-19-2013 06:35 AM in reply to: Jay_B

I am stunned that C3D cannot do this without a corridor surface model.  Then does it really provide true average end area volumes?  Does it use the corridor surface model to prepare average end areas or does it use the cross section geometry?

*Expert Elite*
Posts: 1,367
Registered: ‎09-15-2010
Message 4 of 6 (164 Views)

# Re: Corridor Volume Concepts

09-19-2013 07:08 AM in reply to: mabbas

mabbas wrote:

Then does it really provide true average end area volumes?

AFAIK Yes, it uses the average end area method where the Datum surface is compared to the EG surface to obtain cut / fill excavation quantities based on your corridor frequency interval and companion sample lines at the desired interval based on the corridor from daylight left to daylight right.

There's another option I'm aware of, creating a Tin Volume Surface surface which will compare 2 surfaces.

Jay

C3D 2012 SP3 & C3D 2014 SP1
Win 7 Professional 64 Bit
Member
Posts: 5
Registered: ‎06-26-2013
Message 5 of 6 (155 Views)

# Re: Corridor Volume Concepts

09-19-2013 07:34 AM in reply to: Jay_B

Thanks, this is what I needed.

I follow the reasoning on the end areas.  Since the corridor TIN is created from the defined intervals, it wouild stand to reason that the triangle vertices would correspond to the geometry at the given intervals.  I will confirm this for my own piece of mind.

Valued Mentor
Posts: 850
Registered: ‎01-07-2011
Message 6 of 6 (108 Views)

# Re: Corridor Volume Concepts

09-19-2013 02:40 PM in reply to: mabbas

Then does it really provide true average end area volumes?

When you compute the materials for a sample line group, you can use three different volume calculation methods: Average End Area, Prismoidal, or Composite.

Ernst Engineering
Fred Ernst, PE
C3D 2013 SP2, C3D 2014 Hot Fix 1
W7x64; i7 8gb; Radeon HD 5700
www.ernstengineering.com

Recently Solved