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   Hi,
I'm a mechanical engineer and i work in construction area. Currently i'm working in a dam (barrage) in portugal, and i can't do measure of massproperties (volume) of an block (concrete).

I need to calculate all the volume of concrete that i need to do that block. 

What i do is, copy the bonderies of the dam and paste on side of the real draw (you can see in drawing). Because the growing of the dam is not equal (the width and lenght is not the same in every block) i need to use the loft to calculate the volume. But first i need to erase all the surfaces that growing on his sides. I erase all surfaces and calculate the gross volume, and then, separatly i add all the exterior surfaces.

But, i think that i'm doing something that is not right because i do the EXPLODE the polylines, and then SKRETCH to  intercept the two sides. I think that when i do the skretch to unite the polylines is not follow the path, and with the loft can see that the grid is not the same (please check).

There must be another way to unit the two polylines to follow the path. I tried to get the angle of the arc of the side the dam, and made a new arc, instead put together two polilynes. But i cant get the radius.

I Attached the file, but have more than 500kb.  Coud you help me? I really need help to make the measuring. Please

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joao56777 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 27.Nov.2014 Location: Portugal Using: Autocad2010 Status: Offline Points: 13	Topic: loft and polyline Posted: 27.Nov.2014 at 20:02
	Hi, I'm a mechanical engineer and i work in construction area. Currently i'm working in a dam (barrage) in portugal, and i can't do measure of massproperties (volume) of an block (concrete). I need to calculate all the volume of concrete that i need to do that block. What i do is, copy the bonderies of the dam and paste on side of the real draw (you can see in drawing). Because the growing of the dam is not equal (the width and lenght is not the same in every block) i need to use the loft to calculate the volume. But first i need to erase all the surfaces that growing on his sides. I erase all surfaces and calculate the gross volume, and then, separatly i add all the exterior surfaces. But, i think that i'm doing something that is not right because i do the EXPLODE the polylines, and then SKRETCH to intercept the two sides. I think that when i do the skretch to unite the polylines is not follow the path, and with the loft can see that the grid is not the same (please check). There must be another way to unit the two polylines to follow the path. I tried to get the angle of the arc of the side the dam, and made a new arc, instead put together two polilynes. But i cant get the radius. I Attached the file, but have more than 500kb. Coud you help me? I really need help to make the measuring. Please

John Connor Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 01.Feb.2011 Location: United States Using: AutoCAD 2018 Status: Offline Points: 7175	Posted: 28.Nov.2014 at 00:33
	Upload the drawing to the CAD Blocks area and let us know the name and where you put it exactly.
	"Humans have a strength that cannot be measured. This is John Connor. If you are reading this, you are the resistance." <<AutoCAD 2015>>

joao56777 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 27.Nov.2014 Location: Portugal Using: Autocad2010 Status: Offline Points: 13	Posted: 28.Nov.2014 at 00:52
	uploads/518478/Bloco_E2-E3_36_120-00_-_36_betonagembloco.dwg4.dwg I used the command PURGE, and the drawing pass to 250 kb (1Mb)

philippe JOSEPH Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 14.Mar.2011 Location: France Using: AutoCAD Mechanical 2017 Status: Offline Points: 1493	Posted: 28.Nov.2014 at 07:52
	Hello JoĂŁo bomdia, for the polylines I recommand to EXTEND and not STRECH them because you will change the polyline. For AutoCAD 3D you can use commands to generate curves with facets between 2 curves located in 3D and then use these surfaces with facets to generate solids. Surfaces and solids shouldn't be a problem on dams because the concrete that you will bulit will be like this I think. Ask for these commands if necessary. Eventually if you use AutoCAD with a portuguese release take a look at the dictionnary to tranlate the commands in different languages.

joao56777 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 27.Nov.2014 Location: Portugal Using: Autocad2010 Status: Offline Points: 13	Posted: 28.Nov.2014 at 12:32
	HELLO philippe JOSEPH First of all thanks for your's quick answer. I try to do the EXTEND and i got the polylines intercept. But when i JOIN the polylines, i think i have problems, because they don't close all polylines. Mainly in the low bonderie. Did i made something wrong? I dont know any command to generate curves in autocad 3D, and i only work in English autocad .

joao56777 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 27.Nov.2014 Location: Portugal Using: Autocad2010 Status: Offline Points: 13	Posted: 28.Nov.2014 at 13:01
	HELLO philippe JOSEPH I do the EXTEND (Edge) and then JOIN and when i made the LOFT do not generate a solid but only 4 surfaces

philippe JOSEPH Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 14.Mar.2011 Location: France Using: AutoCAD Mechanical 2017 Status: Offline Points: 1493	Posted: 28.Nov.2014 at 14:11
	Hello again JoĂŁo, I have open your 3D file. I supose that you want to work with the 2 polylines in the middle "Linha Corte" and "Betao PU303" and I supose that you want to joint them with a 3D solid likr the 3DSOLID layer: "Linha Corte" on the right. I supose also that the assembly of surfaces and polylines on the left is the result that you want to know the volume. The 2 polylines in the middle are at elevation "0" and "1.5" exactly so I would do a big solid height 1.5 and add or remove material to have the final result. In any case do a copy at an exact distance for each 3D modification so that you can go back or modify safely. Eventually see my file "3D SOLID 01.dwg that you can find in the CAD/BIM Blocks directory here in the site, launch a search with the file name complete or partial name. To create 3D surfaces between 2 curves located in 3D try : EDGESURF or RULESURF for example. Please let us know if this helped or not. Also to know : if you LOFT closed surfaces modified with the command REGION you will get solids and not surfaces. Edited by philippe JOSEPH - 28.Nov.2014 at 18:30

joao56777 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 27.Nov.2014 Location: Portugal Using: Autocad2010 Status: Offline Points: 13	Posted: 28.Nov.2014 at 19:21
	Thanks to reply my answers, This is so simple idea that i didn't remember. I try to do the way that you advice me, with the 1,5 rectangle, but i cant do it, because i cant transform the block (between the betao p303 e linha de corte layers) in a solid. If was simple with no solid out of bounderies of block like the others in the dam, is easy... but since this its all like this difficult way. I think i'm getting wrong in any point...

philippe JOSEPH Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 14.Mar.2011 Location: France Using: AutoCAD Mechanical 2017 Status: Offline Points: 1493	Posted: 01.Dec.2014 at 09:04
	Bomdia JoĂŁo, I did a 3D work based on your file, see the steps that I take from 1 to 18. The result is on step 5. I had to do 5 files to upload them, rebuilt it by inserting xxxxx-2 to xxxxx-5 in xxxxxxx-1.dwg tell me if this helped or not. uploads/175428/bloco5-1.dwg uploads/175428/bloco5-2.dwg uploads/175428/bloco5-3.dwg uploads/175428/bloco5-4.dwg uploads/175428/bloco5-5.dwg

John Connor Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 01.Feb.2011 Location: United States Using: AutoCAD 2018 Status: Offline Points: 7175	Posted: 01.Dec.2014 at 20:12
	joao: Do you understand what Philippe did or not?
	"Humans have a strength that cannot be measured. This is John Connor. If you are reading this, you are the resistance." <<AutoCAD 2015>>

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