Piled Raft FootingBlind

in 3D Rendering Services held by MDK
Contest Ended, Winner(s) have been selected.
Description:
I need a single 3D or 2D rendering of a "piled-raft" foundation footing. I describe how to make it in a series of 10 steps (below) but reader will benefit if they can see it visually somehow. The illustration should be in black and white only, Gray shading is permissible. Standard architectural fill patterns for concrete, foam, soils etc. are OK. The final figure is expected to be published in a cabin-building book, with due credit to illustrator.

The construction description is below. Any questions, please ask for clarification if something is unclear!

Below are construction details for a piled-raft footing that may be suitable in locations where hand-digging holes to the frost line is made difficult by rocks, roots, or dense, compacted till. The pad footing is linked to driven pin pilings that extend downward to high weight-bearing soil. The friction with the pin pilings adds settling resistance to the pad. The footing form itself is built of XPS foam, which remains an integral part of the footing insulating against cold penetration from above.

Materials per footing:
XPS foam insulation (blue or pink) 1 sheet 2’x 8’ x 2”
Crack-resistant fiber-reinforced concrete mix (1 80# bag)
½” x 12” concrete anchor bolt
5/8” x 20’ rebar (number depends on driven depth)
Construction adhesive (1 tube)
Ground-marking paint (1 spray can)

Directions:
1) Excavate a square hole 3’x 3’ and ~12” deep. Pile excavated soil on a tarp for later use as backfill. Leave the bottom of this excavation level and soil on bottom undisturbed (important!).

2) Cut four pieces of XPS foam 2’x2’ in size. On 3, find the center, and cut a circular hole with 9” radius (18” diameter) using jig saw or drywall saw. Bond these together with foam-compatible adhesive along the circular cut edge. On the fourth piece of foam, find the center and cut a circular hole with 4” radius (8” diameter). Bond this piece to top of the other three.

3) Lay the XPS form flat on bottom of excavation exactly where the footing/pier will be. Reach inside and spray paint the ground within the form. Then remove the XPS foam form and set aside.

4) Within the painted circle, drive an 8’ length of rebar into the ground as far as it will go, or until just 8” protrudes, whichever comes first. For ease, drive this with a hand-held fence post driver and finish with hand sledge. Cut off protruding rebar 8” above ground (a Milwaukee 12V cordless subcompact bandsaw is an excellent tool for this).

5) Continue in this fashion until you have driven 6 rebar pins, well-spaced, into the footing area, but none closer than 2” to the painted outline of the footing.

6) Using a rebar bender tool, bend the protruding length of each piece of rebar to a ~ 90-degree angle, 3 or 4 inches above the ground. Keep all bends within the footing outline. These bends will lock the rebar into the concrete raft when the footing is poured.

7) Place the previously constructed XPS form on the painted ground surface, enclosing all of the driven pin piles. Mix fiber-reinforced concrete to specifications. Weight form down with cinderblock or large stones and pour mix until it is flush with top of the form.

8) In the center of the 8” diameter hole, insert 12” anchor bolt, pushing through the wet concrete until it hits the ground, leaving 4” exposed. Ensure it’s centered and plumb. Cover exposed concrete with plastic and let the footing cure 72 hours.

9). Cover the form with dirt excavated originally. Grade to drain away from the top of the footing. Seed, and cover with straw until vegetation is established. (Omit this step from drawing....).

10) An 10" diameter round wooden pier will be set on top of this footing. The protruding bolt in the footing will insert in a hole drilled in bottom center of the pier.
Wants:
How well does the illustration help convey the build? It should be as simple as possible to convey the idea to a novice builder. It should show the finished footing in the ground. Cut-away rendering fine. 2D or 3D fine-- whatever communicates most clearly. Final print should be digitally conveyed in high-res (300 dpi) or higher, preferably TIFF format. (sorry, I'm not CAD conversant)
Don't Wants:
color.
Ask for Sample:
not necesssary
Additional Information
Designers,
The piled raft footing project will end soon and within the next 4 days we will decide the winning entry. The 6 designers that entered all submitted technically accurate drawings/plans and were willing to make changes along the way. Your work is excellent, and all are deservedly nominated.

Selection of the winning entry will be made by the book's authors, editor, and book designer based on (1) How well the rendering communicates the details of the footing construction, (2) how visually appealing it is, and (3) how well it fits in with the interior book design and other illustrations.

These are subjective calls, and making these decisions will be difficult. Thank you for your patience as we select the winning entry, and again, for your impressive work.
MDK

Entries

1st Winner
#25 Piled Raft Footing - Final 3 Rev 2 by Burhanuddinn
Apr 20, 2021 4:43
#15 PILE RAFT FOOTING VERSION 4_BOLD CALLOUTS by ayna
In this Version I darkened the call-louts as you requested.
more
Apr 17, 2021 11:37
#26 Piled Raft Footing v1 by Burhanuddinn
Apr 25, 2021 12:33
#24 Piled Raft Footing - Final 3 Rev 1 by Burhanuddinn
Declined
Apr 19, 2021 21:06
#23 Piled Raft Footing #2 by Design And More
Hi,
Here the revision of my submission.
You'll find attached visuals
- Color rendering
- Black and white rendering
- Black and white rendering with post effect on background
Hope you'll like ;).
more
Apr 19, 2021 10:32
#22 Piled Raft Footing - Final 3 Rev by Burhanuddinn
Declined
Apr 19, 2021 10:07
#20 Piled Raft Footing - Final 2a by Burhanuddinn
Another options with small note
more
Apr 18, 2021 19:56
#19 Piled Raft Footing - Final 2 by Burhanuddinn
Piled Raft Footing 1.jpg = Standard
Piled Raft Footing 2.jpg = With Bedrock 1
Piled Raft Footing 3.jpg = With Bedrock 2
Piled Raft Footing 4.jpg = With Bedrock 1 and XPS foam Cut-Section
more
Apr 18, 2021 8:40
#18 PILE RAFT FOOTING VERSION 5_updated titles by ayna
Apr 18, 2021 0:51
#17 Piled-Raft Footing Illustration RichardS by richards
Please find attached my monochrome illustration of the piled-raft footing plus the accompanying files used to generate it.
Regards,
Richard
more
Apr 17, 2021 23:32
#1 PILE RAFTING FOUNDATION PLAN by ayna
Please let me know what you think of my design.
more
Apr 15, 2021 4:30
#14 Piled Raft Footing - Final by Burhanuddinn
Declined
Please let me know if you have any corrections or additions. Thanks
more
Apr 16, 2021 13:29
#13 Piled Raft Footing by Hamed1
Hi,
This is final render... Let me Know if you want me to add any thing...
Regards
more
Apr 16, 2021 10:55
#12 PILED RAFT FOOTING by abhib
Hi
I am attaching drawings revised as per your suggestion .
Thanks
more
Apr 16, 2021 5:52
#11 PILE RAFT FOOTING VERSION 03 by ayna
This is my Version 03 of the Project.
more
Apr 16, 2021 1:49
#10 PILE RAFTING FOUNDATION FOOTING VERSION 2 by ayna
Apr 16, 2021 0:05
#9 Piled Raft Footing Visual by Design And More
Hi,
Here the Black and white HD renderings of the project.
Hope you gonna like it !
more
Apr 15, 2021 22:15
#8 MODIFIED PILED RAFT FOOTING by abhib
Hi
I am attaching revised design . Please convey your comments .
Thanks
Abhi
more
Apr 15, 2021 21:54
#7 Piled Raft Footing visual by Design And More
Hi,
Here the HD renderings of the project.
Hope you gonna like it !
more
Apr 15, 2021 21:50
#6 Piled Raft Footing - Step 1 by Burhanuddinn
Hi, This my illustration progress for direction Step 1.
Am i right on the track? Thanks in advance.
more
Apr 15, 2021 19:49
#5 Piled Raft Footing by Hamed1
Hi,
Modified according to your requests... I only dimension changed parameters for now
more
Apr 15, 2021 17:44
#4 PILED RAFT FOOTING by abhib
Hi
This is my design. Waiting for your updates to develop further.
Thanks
Abhi
more
Apr 15, 2021 17:18
#3 Piled Raft Footing by Hamed1
Hi ,
Sorry the last submission was not completely uploaded...
more
Apr 15, 2021 11:06
#2 Piled Raft Footing by Hamed1
Hi,
this is my concept... I wrote dimensions on image I know dimensions are not neat. I just want to know if it's right according to your explanations or not ??....please send me feedback for going further...
Regards.
more
Apr 15, 2021 11:00

Discussion

MDK

Buyer

Sat, 24 Apr 2021 03:13:53 +0000
Designers,
Thank you for your excellent submissions in this contest. We were amazed at the skill and realism shown. Some entries, especially those with call-outs and dimensions were most useful as building guides. Others that showed realistic imaging, and were artistically beautiful. In the end, our final selection of winner was influenced by its similarity with other illustrations in the book.
Thank you again for your hard work and obvious talent. I will be coming back to this group form more work in the future!
MDK

MDK

Buyer

Tue, 20 Apr 2021 21:53:59 +0000
Designers,
The piled raft footing project will end soon and within the next 4 days we will decide the winning entry. The 6 designers that entered all submitted technically accurate drawings/plans and were willing to make changes along the way. Your work is excellent, and all are deservedly nominated.

Selection of the winning entry will be made by the book's authors, editor, and book designer based on (1) How well the rendering communicates the details of the footing construction, (2) how visually appealing it is, and (3) how well it fits in with the interior book design and other illustrations.

These are subjective calls, and making these decisions will be difficult. Thank you for your patience as we select the winning entry, and again, for your impressive work.
MDK

MDK

Buyer

Thu, 15 Apr 2021 04:57:55 +0000
Rishabhj
I wish I could provide a sketch but I am a terribe artist, and I see very little on the internet that looks quite like this. If you google search images for pad-pile foundation, you'll get an idea of the principle behind it. These footing are typically associated with skyscrapers. I am simply scaling it way down and using it for a very stable footing in a wilderness setting. The idea is that the pier sits on a small concrete p[ad, and the pad is supported in part by 6 pin piles (rebar) that extend through the soil to dense, weight bearing soil. If you can drive piles to this layer, rather than dig down to it, it save great amount of time and labor. The fact that the frm surrounding the concrete pad s foam keeps the frost from penetrating below the pad and lifting it. I don't know if that helps you visualize or not.

MDK

Buyer

Thu, 15 Apr 2021 04:46:14 +0000
Your design # 1 is nice, but I see from it that my description was a bit unclear.

The bend in rebar should be 3 or 4 inches above the bottom of the 3x3 excavation-- not the finished grade.

Thus, the rebar bends are encased WITHIN the main mass of the concrete footing.

You might also identify a layer of soil at the bottom where rebar ends that looks a little different, or is labeled high density, or high weight bearing. The idea is to drive the rebar down to this dense soil layer layer where it cannot be driven further. This is why this footing design is able to support quite heavy loads without difficult digging to depth.

Thanks for your efforts and questions! Please follow up if my comments are not clear.
MDK
Wed, 14 Apr 2021 16:22:51 +0000
Can you plz explain points 7-10 again?
Wed, 14 Apr 2021 15:13:27 +0000
It would be great if you could attach a sketch for better illustration.

Design And More

Designer

Wed, 14 Apr 2021 07:55:09 +0000
Nice project! The power of 3D renders to communicate technical informations is impressive. Let's draw!

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