SketchUp for Construction Documentation: Details in SketchUp

I'm going to talk about detailing here and the model that we're looking at is a large home up here in Tahoe that I'm using it as an example it's actually fully constructed at this point but I will show you the process of detailing how I organize my details in Sketchup what I do with them to get them to layout which is definitely a new process that I've been doing which has worked out really well and sped up even further what I've been doing in the past to organize large groups of details in a complete set of construction documents I typically do between six and ten sheets of details with twelve details per sheet per home as these are very custom homes as you can see with a lot of detail in the flashing systems the framing systems as well as connections of different types of materials so in the example I'm going to use this house actually has a pretty unique roof deck let me adjust the shadows so it shows a little better here where it is set within a roofing area that is surrounding below as you can see a covered deck area the upper deck is actually sitting on top of living areas so this is a waterproof deck so I'm going to make sure and detail it in a way where any rainfall that's coming through into this deck area does not leak down into the living area here so I have to find a way to evacuate the water if you look in here the way I'm evacuating the water is taking it under this deck rail underneath this roofing area here and into a gutter system tipping it up so you can see it right here to a downspout so that any water that gets into this deck area will actually find its way to a gutter outside the living area down into a downspout which is then set into a drain that is underneath the patio area here so I use my Sketchup model in a lot of ways after I've gotten it to this point of detail to determine which details I need to add press on a given house so a lot of times I'll actually just take a cursory review of the entire project get myself a detail list and start looking at my detail library for any details that I potentially can reuse or modify or details that I need to create from scratch this is an area where it's a kind of a different detail so it's one I had to create from scratch so next I'll show you the detail that I created and I'll describe how it is organized that detail I'll go out to the working model so you can see is a good represent good representation of all the details that I do and they are basically small vignettes I often get the question all your details contained within your model I say no because I have to put so much much higher level of detail that to try and contain this within a given model would make the model too cumbersome to actually use and edit so all of my details are done is small little vignettes and with time you start to figure out how far you need to go in order to describe these details so the best advice I can have and drawing of in yet or a detail like this obviously you have to have some understanding of construction techniques it's not just something you can go out and do you really need to get out in the field or read lots of manuals we used to use graphic standards as one of the industry standards to see how things are detailed and waterproof very important aspect of architectural design because this is typically where most claims actually come about is with inaccurate detailing or detailing that results in water damage and water damages usually exists anyplace where you are trying to let water shed away from the building whether it's flashing or a gutter or some other type of element so what I start with is I start drawing basically a frame and you can see here that I've got the model organized into different groups and these groups are set on different layers and the layering system for a detail is quite different than what you would do for a floor plan because I really don't turn off and on any of the layers drawing these as an extrusion so it shows exactly how I can see every component of a detail I do have some layering systems that I've arranged here just to describe things like a frame or for roofing or for metalwork things like that they're selected several at once and that helps keep the model organized so if you have to go in and edit something or change geometry it's always easy when you don't have to affect other geometry about it just like you would do with any type of model same thing here as you model everything on zero and then set it in a group or component and label that group onto a layer so here you can see I've created the base frame right here these frame members here represent the deck framing which is over living space which is why you see actually insulation systems here as well as drywall to the underside I'm not really describing this side of the assembly so I don't worry too much about the detail in that area where I I'm going to be doing a lot of detail I want to make sure that's covered for my scene that'll eventually save so the way this system works is it's fairly simple it is actually a plywood deck there are two sub layers of a modified bitumen roofing system with a cap sheet and then a flashing sheet that goes over an integrated metal flashing piece that wraps around a gutter and where we are we have really high snow loads and a lot of ice damage so we tend to spec fairly beefy gutters these are custom gutters that are usually 14 gauge you can see with a spacer and bolt so that they stay together we still put a screen in it to protect it from any leaves that's actually a fire requirement where we are as well the little red items here that you see inside those actually represent heat tape because we get a lot of ice and freezing and we want to make sure this gutter always flows so it has a lot of heat tape that's tied to an electrical cord that actually allows that water to flow even if it's freezing out because this is an outdoor environment indoor environment and covered patio environment here so I'm not going to show how you draw these elements but I think it should be pretty obvious citing you know you find citing profile you like you draw the profile push pull apply the materials lap them create a group and then I can offset the groups to reflect siding on a given house in this case it's a one by eight lap siding there's a piece of trim here and these are all drawn to scale into a size and that's probably just looking at it a two by eight piece of cedar trim on top of the deck since we want this to flow we actually have sleepers so that the decks sloped the sleepers can be either laid flat because it is a pretty shallow pitch at quarter and twelve or they can actually rip the sleepers so that it is dead flat since all the water flows to either side of the sleepers the sleepers do float on top of the modified bitumen and then the decking in this case which is just simple two by six red wood decking is then fastened down through not through but into the sleepers themselves you don't want to have the flashing or the deck screws or deck nails penetrate through the bitumen roofing you want to keep that assembly nice and watertight the insulation I'm showing it's a little different what we do around here these types of areas are definitely prone to condensation so this insulation is actually representing a closed cell foam insulation that's sprayed tight to the deck with an hour nineteen batt insulation below so you get a total combination of roughly are forty insulation but because of this working like a vapor barrier the insulation here we don't get any condensation built up and then this is just showing the drywall to the underside of the stud framing the framing here below is representing the two by six studs the plate doesn't really happen to matter I just had it in another model we won't even be showing that this shows the exterior sheathing and the air infiltration barrier the framing for the railing itself you can see is raised there's a post that will come down through to support it mid span but for the most part it's actually just a floating railing it for one section also carries the framing members just for a short section of the roofline and so here it's just a simple stud frame wrapped in plywood both sides completely wrapped around in all sides with a something like who Thane or any type of bituminous self adhered flashing system and then over that we trim it out so we have a nice sloped top cap a piece of trim siding to the inside a base piece of trim a trim to the underside and then what is blocking but we use a nice cedar piece between the rafters that are framing out the covered patio which are in this case six by twelves at 16 inches on center here you can see the Simpson hanger which I just get that right off of 3d warehouse again any model you download off 3d warehouse just make sure you analyze that model before you load it into your file so you can control the layers and how its grouped or composed of components the assembly for the roof that is leading up to that railing is a corrugated metal and it's on an exposed open roof so what we have is two by six T&G decking we have on top of that apply wood sheathing on top of that we have because of the pitch two layers of a ice and water shield like WR grace ice and water shield it's called and then we have ice pectus but in addition to that 30 pound building roofing paper and then you have the corrugated metal roofing on top where it hits the wall it describes the flashing so there is a roof to wall flashing piece again on its own component that is then flashed against the wall with another piece of self adhering to - flashing so that any water that comes down through here leads its way out onto the roof and off the home mounted - that is actually a decorative hot rolled steel handrail matching the original model comprised of these 2x2 vertical posts with a kind of a u-channel attachment with square head screws again a secondary taller sloped rail and slope the top rail for any rain it doesn't come back into the space it slopes out that rail then is set at the code requirement of 42 inches above the deck this little vignette over here actually represents what happens along the side of the deck as that deck returns against the roofing and has many of the similar components I just described except the roof tool off lashings in a parallel condition so any water coming in this direction goes on to the roofing and out and again we completely wrap these in ice and water shield mainly for our area you probably don't have to do that everywhere I'm not so concerned about the backside of this side detail because it is similar to what is happening on the backside of this detail so after you've modeled your detail you then look at how you want to arrange your views and so a lot of times I will zoom in and I know I'm going to want to capture this detail here where you can see the gutter you can see all the little components and pieces that lead up to this splashing information which is the most important part so then I'll play around with my shadows and adjust them to my liking I will play around with my fog and what's nice with fog is the fog actually takes away the effect that this is a floating vignette and does make it look like it's more a piece of a larger element so as you bring that fog in you can see it just kind of vignettes off into space which has a nice look to it and then the second toggle allows you to get more clarity up front so I'm not going to save the scenes I already have some pre saved but I will show you this is the one I saved it gutter at deck fairly close to where I had it one thing to also consider is as you organize your details and this is going to be referenced into layout is what are the bounds or boundary of the detail box that it's being loaded into so you try to Center these as best you can the information you want to show if it's off to the side you'll end up doing readjustment next one is the backside of the gutter so it's showing the trim I'll describe what this trim is how it relates to this showing the insulation showing this this view of the gutter just gives the contractor much more of you than just one side view then the next one's the back side of the rail so here I'll be describing what's going on with this piece of wood the size the dimension the cut what this piece of trim is what that is next I'll do the front side because this is showing a lot of information on the flashing over the roof and then the last part view is the side rail and this will show specifically what's happening with the side flashing which is a roof to wall in a parallel condition and how it relates to the top cap so this one vignette in this case actually produces five separate details

Channel: SketchUp

Views: 195,012

Rating: 4.9104714 out of 5

Keywords: SketchUp, 3D modeling

Id: iTKmwiTEdQ8

Length: 14min 27sec (867 seconds)

Published: Wed Jul 08 2015