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Tip 2294: Draw Stairs in Plan View
Tip# 2294 By Kent Cooper On 01-Jun-2008
Rated By 2 users Downloaded : 6072
Categories : LISP Code Modules, Misc. User Tools, Linear Objects
Software type : AutoCAD 2008
Rename File To : Tip 2294: Stairs.lsp
STAIRS.LSP: Draws a detail for stairs based on your input parameters.

Draw Stairs in Plan View draws a detail for stairs based on your input parameters. Architects will find this function to be quite handy when laying out stairs in a floor plan. It supports IBC and ABA standards through a series of default values and can be used for residential and commercial work. Load the LISP code and type StairPlan. A series of prompts will appear that let you define exactly what kind of stairs you want drawn. Harry says this very robust program is simple to use, if you know what you are designing.



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User comments
Comment by Krushert,Ted
Posted on 2008-08-06 18:25:40
Excellent routine and nicely documented. I will make use of this on my next project. Thanks. One thing I would like to point out code wise (if case this is not known to some) is that Life Safety 101 2003 Section and Section A. has required clearance between wall surface and "Inside" face of handrail be 2 1/4" clear. Very subtle change that our ADA AHJ did not know. Mr Cooper has made this easier on modify the handrails to compliance by making them plines.
Comment by Cooper,Kent
Posted on 2009-03-11 13:57:29
I would point out that it also does STAIR SECTIONS (it contains TWO commands, StairPlan and StairSec). Both ask for floor-to-floor height, what code criteria apply (e.g. tread & riser limits are different for dwelling units than for public places), offers appropriate defaults (which can be overridden -- e.g. you can force a longer tread than code minimum) for maximum riser, tread, stair width, and (in section only) railing height. Calculates actual number of steps required and actual riser height to make floor-to-floor distance. Options for one- or two- run stairs in both plan and section; in two-run, offers default half-and-half (or nearly) split of number of steps in each run, but user can specify; asks whether to align or offset nosings at landing; in plan also asks for overall stairwell width. In section, offers options for straight risers as in steel/concrete stairs, or projecting bullnose nosings as in wood stairs, and user can specify amount of cant/projection. Options in both plan and section for direction for stair to run; for two-run, in plan, which direction to turn at landing, and in section, whether to cut lower or upper run.
Comment by Anonymous
Posted on 2010-03-23 12:38:26
since i work for a handrailing company, i might point this out...that ADA code stated that clearance between inside of handrail & wall to be 1-1/2", as opposed to the IBC 1-1/2" minimum dim...so it all depends on your region which dim to use...weve noticed lately that all Texas jobs require the 1-1/2" dim but we typ used the 2-1/4" dim so we are having to modify some of our components...