CAD floor plan modeling
Open your materials, follow the steps, then turn in your work.
Model an ER floor plan using CAD or modeling tools that satisfies your criteria and constraints.
1. Open your materials
Use the materials named in the first step below. Open lesson resources.
2. Start the work
Sketch a rough floor plan placing triage, treatment, and flow paths.
Show all 5 required steps
- Sketch a rough floor plan placing triage, treatment, and flow paths.
- Set the scale: in the approved tool, or on a paper grid with a ruler.
- Model rooms, corridors, and the patient-flow path.
- Check that the layout meets your stated constraints.
- Save and submit the floor-plan model.
Lost your place? Lost your place? If your rough sketch from step 1 places triage, treatment, and a flow path, you are ready for the CAD tool. Open it, set the scale (step 2), then model rooms and the patient-flow path (step 3). Do not submit until step 4, where you check the layout against your brief's constraints.
Check your work before submitting
- Your model places stations along a logical patient-flow path.
- Your layout satisfies your stated constraints.
Before lab work: read the safety rules
- Drawing tools only today, digital or paper; no physical construction materials.
- If you work digitally, save your work to the school-approved cloud location, not only to local device storage.
- If you work digitally, do not install unapproved software; use only school-authorized CAD tools.
- If you work digitally, protect the integrity of your design file: do not share edit access with students outside your team.
3. Turn in your work
DueCheck Schoology- Hand in
- CAD or scale floor-plan model with labeled triage zone, treatment areas, corridors, and patient-flow path, verified against design brief constraints.
How to submit and name your file
Use the submission route shown on today's page.
In Schoology, open your course and the assignment for this lesson. Attach your file, select Submit, and check that it appears in the submission.
PDF upload helpYou get two school days for every day you were absent, so this deadline moves with you.
Find this lesson's Schoology assignments
These are existing assignments for your section. Follow the directions in the assignment you are working on; this list does not add new work. Check Schoology for each deadline.
Link will not open? Open Schoology, choose your course and section, and find the title shown above.
How this lesson connects
Route and waits (Feb 8) → a scaled floor plan with the path drawn → each constraint measured on the model. Set the scale first; measure the model, not the impression.
Need help? Warm-up, timing, and directions▸
💡 Big idea: A scaled model makes abstract design decisions testable, because you cannot measure clearances, check flow, or catch a corridor that is too narrow on a you have not actually drawn to scale.
- 0-10Set the scale in the approved tool or on the paper grid; review criteria before drawing
- 10-30Sketch rough on paper using your pre-lab sketch from the design-brief day as a starting point
- 30-60Model to scale, in the tool or on the grid: place , treatment areas, corridors, and patient-flow path
- 60-70Constraint check: verify each constraint in the brief is satisfied by the current layout
- 70-77Save or scan the floor-plan model as one PDF and submit it
- 77-80Exit note: one constraint you compromised on, if any, and how you handled it
- • Today is a hands-on build session: you will model your ER using a CAD or drawing tool.
- • Bring your -- every placement decision you make today must trace back to a criterion or constraint.
- • The goal is a to-scale model that a stranger could walk through and understand.
- • Hands-on build days are lab-SOP days: work methodically, save your file often, and document changes as you go.
- • How to use a CAD or modeling tool to create a scaled that communicates design intent.
- • How to verify that a layout satisfies the criteria and constraints in your .
- • How patient-flow logic should govern the physical arrangement of rooms and corridors.
PLTW connection and today's work
Open Problem 1 in your myPLTW course shell and locate the floor-plan modeling or prototype activity to review the tool guidance and submission format.
Today's stopping point: The design brief is done; by end of today your CAD or scale floor-plan model with labeled patient-flow path should be submitted.
PLTW activity titles identify the course connection. If your account will not open, use the posted materials for today and tell Mr. Mendoza. Do not mark an online activity complete unless you completed it.
Course connection
- Activity 1.1.2 Research and Documentation
Use the turn-in directions at the top of this page. Do not create a second submission unless your teacher asks for one.
Show another explanation or a smaller first step
Need help? Choose a starting point
Finish the assigned lab safely before starting extra practice.
Lesson resources: reading, slides, and vocabulary▸
The deck carries the prior idea forward, lets you inspect an analogy, maps the rule to biology, and ends with the same evidence decision and exit ticket used on this page.
Generated from this lesson's canonical data with a red-team citation check.
Every design decision in a healthcare space carries an ethical dimension, because choosing more of one human good (like privacy) forces less of another (like visibility), so engineers must make the tradeoff explicit and defend it.
A scaled model makes abstract design decisions testable, because you cannot measure clearances, check flow, or catch a corridor that is too narrow on a you have not actually drawn to scale.
Driving question: Can your ER layout actually move a patient from ambulance bay to to a treatment room without crossing a clean corridor with a contaminated one, and does it still fit inside the square footage your brief allows?
What you already know: You already drew the F0 route and measured waits on February 8. Today the measurement is a distance on your own drawing, made real by the scale you state.
New idea: A scaled model makes abstract design decisions testable, because you cannot measure clearances, check flow, or catch a corridor that is too narrow on a you have not actually drawn to scale.
Visual or model: F1. F1 is the scale rule as a text model, not a floor plan. There is no dimensioned reference drawing in this practice; the model you measure is your own, at the scale you state. What to notice: Set the scale first. A measurement on the model is only as real as the scale it uses.
- Open your and list its criteria and constraints with their values.
- Set the scale on the grid or in the tool and write it on the drawing.
- Place the zone, treatment areas and corridors, then trace the patient-flow path from entrance to exit.
- Measure each corridor and room at the scale and mark each constraint met or compromised; make one PDF and submit it to the February 18 assignment.
Real biomedical example: A scaled plan lets a reviewer who has not seen the room check a corridor width from the drawing alone; an unscaled sketch cannot answer that question. Source: Engineering Laboratory.
What the evidence supports: Your brief, your scaled model and the scale rule support the one product: a scaled floor-plan model with its constraint check, submitted as one PDF to the February 18 Schoology assignment.
What it cannot prove: A scaled classroom model cannot show real staffing, surge behavior, or code compliance.
- • Scale: The fixed ratio between a distance on the drawing and the real distance it stands for. Stated once, used everywhere.
- • Criterion: Something the design must do well, such as a short path from to treatment.
- • Constraint: A limit the design must stay inside, such as the square footage or a corridor width in your brief.
- • zone: Where a patient is first sorted by urgency. It sits on the path, near the entrance.
- • Corridor clearance: The usable width of a corridor, measured on the model at your scale.
- • Patient-flow path: The route one patient travels from the entrance through and treatment to the exit.
- • Compromise: A constraint you could not fully meet at scale, recorded with the measurement and what you changed. Recording it does not waive it; the layout needs revision or a teacher decision.
Use it now: Worked sample, not your brief: on a grid where one square is 5 feet, a corridor drawn 2 squares wide stands for 2 squares times 5 feet = 10 feet. Against a sample 12-foot corridor minimum, 10 feet is 2 feet short, so that sample constraint is not met. Now do the same for a room three squares by four squares, and write the conversion before you draw.
Go further, optional: The NIST Engineering Laboratory page adds context on measurement standards. Your brief and your model supply everything the product needs.
Your own : the criteria your layout must meet and the constraints it must stay inside, with their values. Obtain or confirm the assigned brief from your teacher before final modeling; this page does not restate its numbers.
Limit: A criterion or constraint you did not write into the brief is not one you can check. The brief's values are the only ones the model is measured against.
Your with its scale stated: zone, treatment areas, corridors, patient-flow path. With the scale written, a drawn distance becomes a real one you can compare with a constraint.
Limit: An unscaled drawing shows shape, not size, and cannot answer a size question. Measure only at the stated scale.
The 30-inch stretcher and 44-inch corridor minimum in today's self-check are supplied classroom constraints for this model, not a cited code. No staffing, surge or hospital data is supplied.
Limit: Measure your model at your stated scale. A classroom model cannot show real staffing, surge, or code compliance; the stretcher and corridor numbers are supplied classroom constraints, not a code.
BI-FLOORPLAN-D · Simulated classroom evidence scenario
Your role: floor-plan designer checking a scaled model against a design brief
Decision: A teammate says the layout looks balanced and wants to submit, but your brief's square-footage limit and corridor width are unmeasured. Decide what the model must show first.
- • Arrange the rooms so the layout looks balanced and neat on the page, then label them and move on.
- • Stop before finalizing until you draw to scale and measure every corridor, even the ones your brief sets no limit on.
- • Place rooms along the path a patient actually travels, then check the scaled drawing against your square-footage constraint.
Response: One scaled floor-plan model, a CAD export or a clear scan of the scaled paper drawing, with the scale stated, the zones and path labeled and each brief constraint checked, submitted as one PDF to the February 18 Schoology assignment. The choice discussion is preparation, not another submission.
Claim ceiling: Measure your model at your stated scale. A classroom model cannot show real staffing, surge, or code compliance; the stretcher and corridor numbers are supplied classroom constraints, not a code.
Reason for review: A classroom asks for a simplified emergency-department layout that a patient can walk through; the team must show the path and check it against the brief's stated constraints before submitting.
Context: A composite classroom scenario, not a real hospital. The assigned and its values come from your teacher; confirm them before final modeling.
- • The team sketches , treatment areas and a flow path on paper, then sets a scale in the tool or on a grid.
- • The team measures the corridors and rooms on the scaled model and compares each with a constraint in the brief.
- • A sketch without a scale shows where rooms sit, not how wide a corridor is.
- • Once the scale is stated, one drawn distance stands for one real distance and can be compared with a constraint.
- • A constraint that cannot be met at scale is recorded as a compromise, with what changed, and flagged for revision or a teacher decision.
Measurements: None are supplied here. Every measurement comes from the student's own model at the stated scale; the stretcher and corridor numbers in the self-check are supplied classroom constraints, not a code.
Figure finding: The model shows zones, corridors and one patient-flow path; the constraint check shows which limits the layout meets.
Uncertainty: Real staffing, surge behavior and code compliance are outside this model; the brief's values are the only ones checked.
- • Stations sit along a logical patient-flow path from entrance to exit.
- • The layout satisfies each constraint written in your .
- • The scale is stated on the model and every reported measurement uses it.
- • Your brief's square-footage limit and corridor width, as written in it.
- • The supplied classroom minimum of 44 inches of corridor clearance for a 30-inch stretcher, a classroom constraint for this model rather than a cited code.
- • The approved CAD or floor-plan tool, or a scaled paper grid where one square is a stated number of feet.
- • A measured clearance over a layout that looks balanced
- • A short path over a symmetrical plan
- • A named compromise over an unchecked constraint
Test evidence: A measurement on your model at the stated scale, written beside the constraint it answers, with met or compromised.
- Sketch the rough plan with , treatment areas and the flow path.
- Set the scale on the grid or in the tool and write it on the drawing.
- Model rooms, corridors and the path to scale.
- Measure each corridor and room and compare with each constraint in the brief.
- Record each compromise, if any, with what changed, then make one PDF and submit it to the February 18 assignment.
- Scale, stated once on the model
- Labeled zones: , treatment areas, corridors
- Patient-flow path traced without crossing
- Constraint check with a measurement beside each constraint
- Compromises named with what changed
Students often think Students think a is basically decorating: put the rooms wherever they look balanced and neat on the page.. The trap: The trap is arranging rooms for visual symmetry instead of for the path people travel. A layout that looks tidy can force a patient's stretcher to back-track or cross a contaminated corridor. Patient-flow logic, not neatness, must govern where rooms and corridors go, because the plan exists to move sick people safely, not to look balanced.
ER floor-plan model report (classroom sample; the sample constraints are not your assigned brief)
Scale: 1 square = 5 feet on the grid.
Layout: triage inside the entrance; four treatment bays along one corridor with the nurse station across from them; the patient-flow path runs entrance, triage, bay, discharge in one direction without crossing.
Measured check against the sample constraints:
- Main corridor at least 12 feet wide: drawn 3 squares = 3 x 5 = 15 feet. Met.
- Footprint within 60 by 40 feet: drawn 11 by 8 squares = 55 by 40 feet. Met.
- Entrance to first bay under 50 feet: drawn 12 squares = 60 feet. Not met; recorded for revision, not waived.
Not shown by this model: staffing, budget, code compliance or throughput; none is measured here.
This model shows the level of evidence and organization needed to complete: A scaled CAD or drawn floor plan that places triage, treatment, corridors, and the patient-flow path, verified against the design-brief constraints.
- State the question and method.
- Present the observations and data with units.
- Explain the result, limitations, and next investigation.
Keep the structure. Replace the question, facts, measurements, and evidence. Then recheck units, vocabulary, and whether the conclusion goes beyond the evidence.
Also due today: Upload one PDF, a CAD export or the scanned paper drawing placed in a Google Doc, to the Feb 18 Schoology assignment (Wk5 Lab report: CAD floor plan modeling), due February 18 at 11:59 PM.
- CER:
- Claim, Evidence, Reasoning: make a claim, back it with evidence, explain your reasoning.
- SOP:
- Standard Operating Procedure, the exact steps to follow (especially in a lab).
- Tracker:
- Your PLTW progress log where you record completed evidence.
- myPLTW:
- The PLTW course site where you do the online activities. Find it in Clever with your Microsoft sign-in, right next to Schoology.
Practice: try a question, then check your answer▸
Claim ceiling for this check: Measure your model at your stated scale. A classroom model cannot show real staffing, surge, or code compliance; the stretcher and corridor numbers are supplied classroom constraints, not a code.
Your CAD plan is drawn but you never set the scale. A corridor measures 2 inches on screen. Can you tell whether a 30-inch-wide stretcher clears the 44-inch fire-code minimum? Explain.
Write an answer and pick a confidence to unlock the key.
Missed class or ready for more?▸
My assigned design brief is confirmed with my teacher and open, and I can point to each constraint. My scale is written on the drawing or set in the tool. Digital: my file saves to the school-approved location. Paper: I have a ruler, grid and pencil, and a way to scan the finished drawing into one PDF.
Finish the checklist before you handle any material.
- • Drawing tools only today, digital or paper; no physical construction materials.
- • If you work digitally, save your work to the school-approved cloud location, not only to local device storage.
- • If you work digitally, do not install unapproved software; use only school-authorized CAD tools.
- • If you work digitally, protect the integrity of your design file: do not share edit access with students outside your team.
- 1Sketch a rough floor plan placing triage, treatment, and flow paths.
- 2Set the scale: in the approved tool, or on a paper grid with a ruler.
- 3Model rooms, corridors, and the patient-flow path.
- 4Check that the layout meets your stated constraints.
- 5Save and submit the floor-plan model.
| Constraint, copied from your brief | Measurement on your model at the stated scale | Met or compromised | What you changed, if compromised | Where it is on the drawing |
|---|---|---|---|---|
Which constraint in your brief will be hardest to meet at scale, and why?
Which one was hardest, what did you measure, and which constraint, if any, did you compromise? If all were met, say what the measurement showed.
What today's skills lead to. These are real health-science careers this course builds toward. Tap one to see, on the US Department of Labor's O*NET site, what the job actually involves, what it pays, and how fast it is growing.
Build the individually as a paper or digital drawing to scale: place , treatment areas, and the patient-flow path, and label how it meets your constraints.
NIST Engineering LaboratoryUse the submission route shown on today's page.
Class still runs. Complete the online activity above (it's self-guided). Need the concept taught without a teacher? Use this authoritative explainer:
Patient-flow practice from February 8: the route your plan followsHow I will check this work
- Your model places stations along a logical patient-flow path.
- Your layout satisfies your stated constraints.
Measure your model at your stated scale. A classroom model cannot show real staffing, surge, or code compliance; the stretcher and corridor numbers are supplied classroom constraints, not a code. Use the Schoology assignment linked above to submit it.
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