

It was a big deal to me 20 years ago and even though we don’t draw by hand anymore, it’s still a big deal to me.Įver since I left the last big firm I worked for (RTKL 97-98), every office I have worked for, I’ve changed the graphic standards in that office. It was art to me … I thought these drawings were beautiful and I didn’t want other people working on my sheets, adding their sloppy pencil work to the magic I had created. You could look at the hand drawn construction drawings and frequently tell who had drawn what sheets and what details. I consciously endeavored to add profile lines, hatching, foreground and background indicators in place. I used 3 or 4 different lead holders with leads of varying degrees of hard/soft to them.

Residential blueprint standard notes how to#
This was where I really learned how to draw but before you old folks say “that’s right!” and you younger folks look at this as old-timers syndrome, I’m not saying that we drew better, I’m just saying it was different. Some of the larger production commercial firms had the resources to buy “CAD Stations” and dedicate substantial office space to server rooms complete with NASA-looking tape storage systems, but most firms were still drawing things by hand. When I graduated from architecture school in 199, computers were not that prevalent. For the purposes of today’s article, I am going to assume that all architectural drawings are correct and serve their purpose of conveying intent, scope, and quantity.īut that’s not really the entire story, is it? I didn’t say the contentof their drawings – and this isn’t just semantics – it speaks to the culture of the firm. For this circuit you will need to buy one four-way switch and two three-way switches.ĭouble Pole Switch: Typically used to switch outlets and appliances on 240 volt circuits.How an architect draws is a reflection of many things – you can frequently tell the priorities of a firm just by looking at the qualityof their drawings. If you had three entrances to a room, you may want a light switch at each entrance. The term 3-way actually describes the inner workings of the physical switch which is different from a standard toggle switch.Ĥ-Way Switch: As above with the three-way switch but here three switches will control typically a light or group of lights. You'll need to use 3-way switches at both living room entrances for this electrical circuit to work. For instance you may have two entrances to your living room and a switch at both entrances to turn the living room lights on. Often used for lamps.ģ-Way Switch: A bit confusing but this means there are two switches in the home to control the same item (typically a light or group of lights). Switched Duplex Plug Outlet: This outlet can be turned on and off with a switch. This decreases the likelihood of having two appliances which are plugged into the same outlet trip the circuit breaker. The two sockets of the duplex outlet are on separate circuit breakers at the electrical panel. Split Duplex Plug Outlet: Typically used in kitchens or anywhere the loads on a given outlet will be high. Notes:ĭuplex Plug Outlet: A standard plug outlet with two sockets for plugs. Note: Explanations for common household electrical items such as three-way switches and switched duplex plug outlets are below the figure. The most commonly used electrical blueprint symbols including plug outlets, switches, lights and other special symbols such as door bells and smoke detectors are shown in the figure below. Below is a figure showing the most often used residential electrical blueprint symbols.įor other residential symbols, see our Blueprint Symbols page.
