just a model of proposed construction systems for a previous architecture project.
I think it's 1/4" = 1'-0" but I can't remember. If you're trying to make models yourself here's some tips:
#1 basic info here:
http://www.cardfaq.org/faq/tips.html#s3 #2 basic gluing info here:
http://www.thistothat.com/ #3 if it is within your skills, it helps to create a drawing scaled to the size you want to build your model to first (It saves a lot of time when it comes to cutting chipboard or plastic) AutoCAD is great, but a hard lined drawing will do.
#4 USE TWEEZERS! You can find some nice tweezers at local craft stores. Get ones with bent tips and straight tips. Also some like to use syringes for injecting glue, but they always clog up on me. (Plus there's usually cute crafting girls that work at Hobby Lobby/Jo-Ann Fabric et al)
#5 Spread glue on a spare piece of cardboard or paper and apply with toothpicks (again its cleaner that way)
#6 if you cant see it and its structurally important use cryanoaculate (superglue, zap-a-gap, flash glue etc) If you need it to set fast use kicker (clear spray on glue accelerant - may end up causing cancer...) also you can "kick" superglue by placing it on an opposing surface with white glue and joining.
#7 use #11 x-acto blades or finer, replace blades frequently (buying a self-sharpening/healing cutting mat helps)
#8 find a store that sells plastics in sheets... they usually have cool scrap that they sell cheaply. Also, some hobby stores have overpriced styrene eyebeams, brick walls etc..
enjoy!