How To Make Stairs In Sketchup

As a carpenter, one of the hardest things to plan is the stairs. Hard math, figuring out the rise and running of each step, and calculating the tread thickness, pitch and finish floor height are all opportunities for mistakes. In this tutorial, you’ll learn how to use SketchUp to plan the deck stairs. Watch the video or continue below.

Stair design pitfalls

Contents

The hardest part about building stairs is knowing how to map out the ropes. The braces are the structural members of the stairs to which the steps and steps are fastened. To build the rope posts, you need to cut out the grooves for the steps and steps, usually from 2×12 pressure-treated lumber.To find out the size of the grooves, you can refer to the ideal building codes and measurements. However, the most common mistake when cutting steel wire is incorrectly calculating the thickness of the steps, steps or the thickness of the finished floor. In the end, you want each ladder to be the same size; From the ground, all the way up to the top of the deck. For this to happen, you need to take into account the thickness of the different materials that you will be installing on the braces. So the tricky part is that the sizes you need to use to cut the lanyard have to do with finishing materials will be installed on top of the chain, not the threaders themselves. So this means you need to be intentional calculate and subtract thickness of the finishing material to reach the chain size.

These are the most common pitfalls when laying strings: (Personal experience)

Total gain is incorrect – The total increase is total vertical distance from the bottom landing to the top of the finished deck at the top of the stairs. A lot of times when you’re planning your sequence, you already have a deck frame ready, but you may not have the deck installed. When measuring the total gain, you need to make sure that you have included the thickness of the flooring material in your measurement. (For interior stairs, you also need to take into account the thickness of the finished floor at the top and bottom of the stairs.)
Forget about the protrusion – If you are going to overhang an overhang in front of a ladder or rope puller, you need to include that overhang in your calculations so that the overhangs are placed in appropriately.
No lifter at the top step – If you are installing risers on stringers, most of the times you don’t need to install a riser in the top step because the rim joist acts as the top riser. If that is the case, the top step running on the stringer should be one thickness shorter than the riser.
Height of the bottom step – The height of the bottom overhang must be shorter than all the rest because the rest represents the top surface/finish surface of the tread. After the steps are installed on the slings, the height range of the ladder should be the same for each step, including the ground/landing step up to the first step. This will only happen if the string is shorter for the first step.

Easy sequence planning

SketchUp makes character sequence planning foolproof. Instead of doing a bunch of mental math, you can create some very simple reference geometries that can be easily scaled to the finished size of the stairs. This will allow you to work backwards until you reach the final wire size. International building codes require a maximum lift height of 7 3/4″ and a minimum tread depth of 10″ for each step. The actual height of the ladder will be determined by the total height of the stairs, divided by the total number of steps. The tread depth offers more flexibility, assuming you don’t have limited space in front of the stairs. When starting to lay out the stairs, you can start with the ideal tread depth or you can adjust the depth of the stairs after you have calculated your step height. Here are some rules of thumb for getting an ideal set of slopes and spikes.

To create a reference geometry for the stairs, follow these steps:

Before you start modeling the stairs, you should have a surface that represents the ground, as well as a geometry that represents the top surface of the deck.

To start creating the reference geometry for this step, draw a rectangle using RectangleTool R. (You can press the left or right arrow key to lock the axis if needed). Type 7 3/4 ″, 10 ″ ENTER to set the size. 7 3/4 is the maximum step height and 10 is the minimum allowable tread depth of the International Building Code, so we’ll use that as a starting point, knowing we can Scale up as needed.

Double click on the face of the rectangle to select, then press G to create the composition. Name the component “Step”.

With the Step component selected, activate MoveTool M. Click the bottom corner of the step to start moving, press Ctrl/Option to switch to “copy” mode, then click the opposite corner of the first step to place a copy. Enter the number of copies you need to make it fit over the top of the deck, plus the letter X, then press ENTER. For example, type 5x ENTER. (If you don’t get it right on the first try, just enter a different time interval and SketchUp will update the number of copies. You can also delete extra copies if you want to do that.) Make sure to do that. that you include the crossing step with the top of the deck, although you won’t include that step in the sequencer, you still need to calculate that step interval for reference.

With Option tool, hold down Ctrl/Option to add each step element to your selection. Right click > Create a group. This will make it easy to manipulate the steps like an assembly.

Finally, use RatioTool S to scale the group of steps down until you reach the top of the finished floor.

Use MoveTool M to align the top corner of the top step with the top front edge of the plank.

Build the stairs in reverse

Now that you know the boundaries of where you need the finishing material, you can start building the stairs in reverse, until you get to where you need the column. You should separate the guide lines into their own group before starting to model within the component. You will probably need to create a unique component or two once you have everything in place, but you can keep everything as the same component definition for now.TIP: To make it easier to distinguish reference geometries, you may want to apply semi-transparent material to the faces of the rectangles and assign them to a layer with dashed style.

Treads

Start by modeling one of the spike boards. You can have a single 2x per track, or you can have several boards that make up each track. Inside the step component, draw a table on the front edge of the step with RectangleR Tool, then extrude it with Push / PullTool P. Stick to the dashed lines for reference. Click three times board, Right click > Create group. Remember, you don’t want to stretch beyond the dashed lines, so extrude downwards to get the thickness of the board. Alternatively, you can decide to use replacement components, but I chose to use groups here as some of these tire boards will need to be customized. It’s up to you if you want to use components and Create uniqueness as needed. MoveM tool with Ctrl/Option modifier to make several copies of the board to stretch the full depth of the tread.One of the tables will be longer than necessary. Don’t worry about that right now. We will go back and modify it once the windows are in place.

Risk

Read more: How to disable triggers in oracle RectangleR and tools Push / PullTool P, snap to the dashed lines and use the spike board as reference. MoveM Tool to move the ladder back 1/2″. To create overhangs on the sides of the stairs, use Push / PullTool P to shrink 1/2 slant grooves on each side.If you’ve done everything correctly so far, the top step should intersect perfectly with the top of the deck and the front of the rim brace. If so, you can go ahead and remove that top step component now, as the deck itself will act as the top step.To fix the back spikes extending too deep through the stairs, use Push / PullTool P to adjust its size. (Note: You may need to make the upper step component unique, as the board is in front of the rim brace and not under the lift bar as in the other steps.)You’ll also notice in the image above, that I’ve moved the spike boards and adjusted them so that I don’t have a single, small board behind each track. Instead, the front and back are shredded equally.

Stringers

Now that the ladders and ladders are in place, firmly placed on the dashed reference line, we can start modeling the sets of strings. The string set will be created by tracing the edges where the tracks and grooves attach to the stringer.

Draw a rectangle using RectangleTool R. Enter 11 1/4 ″, 6 ′ ENTER. (The length doesn’t matter too much because we’ll be “slicing” it to size once in place.) Draw a rectangle along the axes. Don’t try to draw it at an angle. We want to make it a component while being aligned to the axes, then we will rotate it and position it in place, that way the component axes will align with the geometry inside the component .

Use Push / PullP tool to extrude the string 1 1/2 ″.

Triple-click with Option tools > press G to Create Component.

Move and rotate the component into position so that it is aligned with the top front edge of the deck.

Activated TurnWith the Q tool, click and drag from the front edge of the deck, and drag the mouse along the front edge to align the spin axis with it. Click on the edge of the string set to start the swing, then snap onto one of the front edge points of one of the tracks. Use MoveTool M to move the string to its final position.

Double click the Stringer element with Option tool, then use RowL tool to track around ladders and ladders. Use Push / PullP tool to remove parts of the board.

You now have a perfect set of strings! Copy it anytime you need. I find this to be the best way to plan and execute string literals, as it eliminates a lot of opportunities for human error. I hope you enjoyed this guide! Let me know now in the comments section below if you have any questions. Read more: how to use incense to clean crystals

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