This past Thursday we attempted our second try at pouring our concrete canoe. The first one was a fair practice run, but ended up in casting failure. When we removed the male plug from the 2 day strong concrete, we found the concrete had made it's way past the polyurethane coats. It bonded with the plaster and took up some of the fiberglass cloth that held the original balsa wood backbone of the mold together. Having planned to make more than 1 boat, we quickly made the executive decision of laying an extremely smooth membrane in the female, and wrapping the male with a lightweight plastic. The membrane had worked for teams in the past using a hand placing method, and the lightweight plastic had worked in our male mold test earlier in the year. It was no easy task laying the membrane in, we began to feel like rubber tailors. However, the possibility of an extremely smooth boat right out of the mold outweighs the risk of seems. For those who want to know more about the membrane laying process, leave a comment. I will not give away too many secrets unless I know you're playing for Drexel.
After upgrading our molds, we mixed up our proven best concrete mix and went at it again.
Here's the female mold, black with the membrane, some steel mesh (magically) suspended on the sides, plywood rib cage, and 4 alignment poles.
Here's the wrap of the male mold looking quite nice, notice the folds strictly at the end.
Here's an example of the alignment pole, the pole itself for X & Y control, the wood block there for Z control.
Here's the steel mesh we used as our primary reinforcement. Last year's epic cracking led to our creative ways of smuggling reinforcement.
Here's Mo alongside all our buckets set up for half cubic foot mixes.
The male mold eagerly waits alongside the old champs,
Pat working the drill while Chris steadies the bucket and Marie adds our cementitious material blend.
Coming along nicely.
Myself working the drill with Alisha adding silica fume, Mo handling the water, and Megan learning the way.
I used to have nice boots.
In go some fibers...
After we made enough, we poured em all in and spread it out.
In comes the male mold...
Onto the poles...
Adding the weight to the push in the male,
The steel plates are around 80lbs, the buckets 40-70lbs.
The front tip,
The back tip,
Pour complete!
We'll be taking out the male plug Saturday at Noon. It will surely be an exciting afternoon.
Greg
Saturday, March 21, 2009
Monday, March 2, 2009
Week 9: Finishing Job Assignments
While we didn't meet our Week 8 goal of casting, we accomplished some very necessary corrections to the casting system. Over the next couple days we'll have some quick catch up work shooting for the new goal of Tuesday Night's Pour & Pizza.
As we've approached the final stretch of construction, I've gotten a pretty good sense of whose been working with what. I'm going to assign some of you that are regulars jobs that need to be completed throughout the next month. Those of you that are not named directly on to a specific task, need to be aware of which ones will require more hands or minds to complete, ie. the mold alignment and rebar installation. I feel as though having random appearances with often little jobs leads to idle hands. This specialization will steady your hands with specific fields and train you to step up and lead it next year. Without further ado,
Mold Alignment Goal: Finished by Monday evening
Ed edwin.s.williams@gmail.com
Greg gs592@drexel.edu
Nick nicholassimmons27@gmail.com
Mo mm4522@drexel.edu
Ali M. email missing, Mo Pass word on
Chris R. dieselprep@gmail.com
Hands will be needed Monday/Tuesday
Reinforcement Installation Goal: Finished by Tuesday afternoon, Arrangement recommendations after first pour
Pat P jjp462@drexel.edu
Alan alan.c.fody@drexel.edu
Ali R. arehemtulla@gmail.com
Alisha alisha.strayer@gmail.com
Dave F. dmf482@drexel.edu
Hands will be needed Monday/Tuesday
Tshirts Goal: Ordered by Friday
Marie mbl33@drexel.edu
Pat P jjp462@drexel.edu
Any others with interest or experience, email them.
Structural Research & Concrete Testing Goal: Something report worthy by Wednesday
Mo mm4522@drexel.edu
Alan alan.c.fody@drexel.edu
Alisha alisha.strayer@gmail.com
Any others interested, email Mo/Alan
Mix Decision and Testing Goal: Best mix selection, adaptions. Material Inventory.
Pat P jjp462@drexel.edu
Alan alan.c.fody@drexel.edu
Ange amc325@drexel.edu
Another underclassmen participant recommended.
Hours & Dollars Accounting Goal: Something report worthy by Wednesday
Pat P jjp462@drexel.edu
Aga ays28@drexel.edu
Marie mbl33@drexel.edu
Ali R arehemtulla@gmail.com
Others good with quick math, join in.
Design Report
Pat P. jjp462@drexel.edu
Greg gs592@drexel.edu
Alan alan.c.fody@drexel.edu
Ali R. arehemtulla@gmail.com
Nick (HISTORIAN!!!1!eleven!!) nicholassimmons27@gmail.com
Alisha alisha.strayer@gmail.com
Marie mbl33@drexel.edu
Anyone good with words/creativity jump in asap.
There are many names on the email list, that are not found on this list. You are all welcome to join in on a task, ask those involved.
Everyone on the list is encouraged to work out times with each other to meet deadlines. The construction jobs atop the list are obviously a must over the next 2 days. I will be in the lab for nearly all the next 48 hours.
This is a living system, if you're schedule doesn't line up, ask someone to switch jobs with you. However, underclassmen can only switch with underclassmen and seniors can only switch with seniors. Knowledge must be passed on. If you need advice on a task, ask anyone involved and if you're in something deep, ask a professor or alumni.
As we've approached the final stretch of construction, I've gotten a pretty good sense of whose been working with what. I'm going to assign some of you that are regulars jobs that need to be completed throughout the next month. Those of you that are not named directly on to a specific task, need to be aware of which ones will require more hands or minds to complete, ie. the mold alignment and rebar installation. I feel as though having random appearances with often little jobs leads to idle hands. This specialization will steady your hands with specific fields and train you to step up and lead it next year. Without further ado,
Mold Alignment Goal: Finished by Monday evening
Ed edwin.s.williams@gmail.com
Greg gs592@drexel.edu
Nick nicholassimmons27@gmail.com
Mo mm4522@drexel.edu
Ali M. email missing, Mo Pass word on
Chris R. dieselprep@gmail.com
Hands will be needed Monday/Tuesday
Reinforcement Installation Goal: Finished by Tuesday afternoon, Arrangement recommendations after first pour
Pat P jjp462@drexel.edu
Alan alan.c.fody@drexel.edu
Ali R. arehemtulla@gmail.com
Alisha alisha.strayer@gmail.com
Dave F. dmf482@drexel.edu
Hands will be needed Monday/Tuesday
Tshirts Goal: Ordered by Friday
Marie mbl33@drexel.edu
Pat P jjp462@drexel.edu
Any others with interest or experience, email them.
Structural Research & Concrete Testing Goal: Something report worthy by Wednesday
Mo mm4522@drexel.edu
Alan alan.c.fody@drexel.edu
Alisha alisha.strayer@gmail.com
Any others interested, email Mo/Alan
Mix Decision and Testing Goal: Best mix selection, adaptions. Material Inventory.
Pat P jjp462@drexel.edu
Alan alan.c.fody@drexel.edu
Ange amc325@drexel.edu
Another underclassmen participant recommended.
Hours & Dollars Accounting Goal: Something report worthy by Wednesday
Pat P jjp462@drexel.edu
Aga ays28@drexel.edu
Marie mbl33@drexel.edu
Ali R arehemtulla@gmail.com
Others good with quick math, join in.
Design Report
Pat P. jjp462@drexel.edu
Greg gs592@drexel.edu
Alan alan.c.fody@drexel.edu
Ali R. arehemtulla@gmail.com
Nick (HISTORIAN!!!1!eleven!!) nicholassimmons27@gmail.com
Alisha alisha.strayer@gmail.com
Marie mbl33@drexel.edu
Anyone good with words/creativity jump in asap.
There are many names on the email list, that are not found on this list. You are all welcome to join in on a task, ask those involved.
Everyone on the list is encouraged to work out times with each other to meet deadlines. The construction jobs atop the list are obviously a must over the next 2 days. I will be in the lab for nearly all the next 48 hours.
This is a living system, if you're schedule doesn't line up, ask someone to switch jobs with you. However, underclassmen can only switch with underclassmen and seniors can only switch with seniors. Knowledge must be passed on. If you need advice on a task, ask anyone involved and if you're in something deep, ask a professor or alumni.
Update Through Week 8 in Picture Form
Here's a pile of photos from having the lab camera cleared out. The dates are still about a month behind, not from on however, thanks Nick.
Here's a few from the smale scale pour we did on the 8' section we built a while pack with an old foam female.
Cutting the reinforcement,
Pressing the male into the female,
160lbs of calm compression,
Nearly a finished system,
Here's our recent most glorious spread test,
34" of consistent self consolidating concrete baby.
Stronggggg light cylinders,
Power tools and pool noodles,
The Mars Volta stopped by the lab to help out with the ends of the mold,
Do this for 4 hours and you realize you better get a sweet boat out of it.
Good crowd Saturday,
Thats all for now, more to come as we go.
Greg
Here's a few from the smale scale pour we did on the 8' section we built a while pack with an old foam female.
Cutting the reinforcement,
Pressing the male into the female,
160lbs of calm compression,
Nearly a finished system,
Here's our recent most glorious spread test,
34" of consistent self consolidating concrete baby.
Stronggggg light cylinders,
Power tools and pool noodles,
The Mars Volta stopped by the lab to help out with the ends of the mold,
Do this for 4 hours and you realize you better get a sweet boat out of it.
Good crowd Saturday,
Thats all for now, more to come as we go.
Greg
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