Building Technology II ARCH2331, F2022

Some Students have talked to me about the possibility of participating in the Solar Decathlon Design Challenge. It may be possible to utilize much of the work for the BT2 classes for the foundation of this competition.  The deadline for the application is this Thursday October 20^th. If you are interested in being part of the team and pursuing this competition join either (or both) of these two Zoom sessions. If you are still interested and cannot join either of the zoom sections send us an email. If there is enough stuff team energy members and enthusiasm we will proceed.

Following is a link to the Department of Energy website about this event:
https://www.solardecathlon.gov/event/challenges-design.html

meeting times:
Friday 10-16-2020 @ 3pm
AND/OR
Sunday 10-18-2020 @ 11am

Meeting Link
https://us02web.zoom.us/j/88569756792
Meeting ID: 885 6975 6792

Student question:

“…. my structural grid is printing as solid lines instead of the grid line type, I did everything I could to change it but I just can’t seem to fix it, the model space is fine, it’s just the paper space that’s messed up.”

Solution:

There are several ways to adjust line properties, so they print dots and/or dashes.

Here are 3 ways that I think are most useful.

you can type the command  “PSLTSCALE” to turn off and on the scaling line command. When on the line should scale to the Scale you’re using in that particular viewport.

MSLTSCALE To adjust line scales in model space

PSLTSCALE To adjust line scales in paper space

https://knowledge.autodesk.com/support/autocad/learn-explore/caas/sfdcarticles/sfdcarticles/Linetype-Scale-MSLTSCALE-and-PSLTSCALE.html

or

You can right click a line and go to its properties and change its “Linetype scale”.

https://knowledge.autodesk.com/support/autocad/learn-explore/caas/CloudHelp/cloudhelp/2021/ENU/AutoCAD-Core/files/GUID-20B4D4B3-1220-426A-847B-5BBE36EC6FDF-htm.html

• AutoCAD Workshops Topic: NYCCT – ACAD Workshop – Zoom Meeting Time: This is a recurring meeting Tuesdays 12-2p (weekly U.O.N)
• register on nycctfab.com/#!register/cn58
• Join Zoom Meeting https://zoom.us/j/97560806286?pwd=WDVtZXpMcXZTaXlVVmhlNVByVjQ4dz09
• Meeting ID: 975 6080 6286
• Passcode: 380462

Welcome to the Fall 2020 semester and Building Technology 2 course

City Tech’s first-ever almost completely online semester!

On this website you will find the syllabus, software used, textbooks, schedule, lecture notes, assignments,  support information and more.

For your first interview assignment you can find the link here:

https://forms.gle/Ppfxu42jraSm5kgw6

Your logo design needs to be ready for next class.

Question:
I’m having trouble with scaling my wall section details. I figured out the multiple viewports part but for example, The cantilever is perfect at 1:16, too big at 1:10, and too small at 1:20. The window Details is Perfect at 1:20, but 1:16 also works.

Response:
It is a good idea to keep your scales constant if you are able to line the might neatly in the detail sheet. Break the cantilever into two separate details one showing how it works where it intersects the wall below and one where it shows how the cantilever wraps around its protruding corner. For your details 1:10 (1 1/2″=1′-0″) is the least details you should scale use. I recommended to the class that they use 1:5 (3″= 1′-0″). 1:16 (3/4″=1′-0″ it is used in Imperial scale system) is not used in the profession and can cause problems in real projects 1:20 is sometimes used but that is not detailed enough of the scale to convey all the information you need in your details.

Common Drawing Scales equivalent:
“Soft” (rough) scale conversion

Question:
I had a question about the thickness of the batt insulation in the roof. You asked us to make it thicker than our deepest joist, in my case 220. However, I am not sure what can hold it. For example, the image I attached shows that the joist is flush with the slant of the roof, if I give ore space for insulation what can I add so there wouldn’t be a gap above the joist? Double studs (47×75)? If so, how far should I space them from the joist?

Response:
See the attached sketch in particular the parts labeled A, B, C, and D.
Because roofs tend to be the surfaces you lose most of your conditioned air it is the area that should have the most insulation if possible. The overall insulation area should be equal or greater (B>A) to achieve this you can put your roof furring strips (D) at a distance from your rafter. To support your roof furring strips you can use 18mm OSB or plywood (C) to connect them to your rafters.

Question: I was trying to calculate the beam to use in my building. Can you check the attachment to see if it’s correct?
Answer: Yes, that works with the table Architect Studio Companion

Question: I also need help with finding the width of the beam.
Answer: A beam with is from 2 to 7 times smaller than its depth depending on the beam length. In your example dividing the death by three would equal roughly 5.25” would be a good estimation.

Question: Is it okay if my exterior walls for the Cooper Residency are 13” thick and the interior ones 6”?

Response: Yes, 13” is a good estimation of what a high performance wall might equal. Interior walls are typical typically just under 5” (4-3/4”) so that is a good number to work with.