🚧 Under construction — VoTechWorks is being built. A free tech program — complimentary, as our commitment to get America working.
voTechWorksGrade 13 · a vocational technology learning center, by urbanicity
newSchoolWorks.com › VoTechWorks › Agriculture, Environment & Public Service › Agriculture / Horticulture / Landscaping › Capstone Project: Integrated Landscape & Horticulture Build › Lesson 2
AGR-HORT49-09 · Lesson 2 · 40 clock hours · lab

Design Development and Documentation Package

Objective. Students produce a complete, professional documentation package—scaled planting and irrigation plan, plant schedule, materials quantity take-off, cost estimate, and seasonal maintenance calendar—that could be submitted to a client or used as a NALP portfolio artifact.

⚠ Pending professional review

This lesson, its worked examples and its practice questions has not yet been verified by a licensed professional in the field or by a certification or approval body. It is a study draft and may contain errors. Do not use it as instructions for work on a job site or on live equipment. Always follow your instructor, your supervising professional, and current official references and regulations.

VoTechWorks program approval and accreditation are still in progress. Credentials are issued only by the certifying bodies named in each program, after their own exams.

Why a Documentation Package Matters

A professional documentation package is the paper trail that connects your design intent to the finished landscape. It protects you legally, gives installers clear instructions, lets clients understand what they are buying, and—critically for your credential path—serves as a portfolio artifact that NALP Landscape Industry Certified evaluators expect to see. A sloppy package costs money through mis-ordered materials, missed irrigation zones, and client disputes. A clean package builds trust and business.

The Scaled Planting Plan

The foundation of the package is a scaled planting plan drawn at a minimum scale of 1 inch = 10 feet (or a larger scale such as 1 inch = 5 feet for small residential sites). The plan must show:

Every plant on the schedule must satisfy the site-analysis constraints you documented in Lesson 1: sun/shade exposure, soil drainage class, USDA hardiness zone, and any applicable water-use budget. Cross-check each selection before you finalize the plan. A plant that fails one constraint can fail the entire installation.

Safety note: When working at a drafting table or extended computer session, position your monitor at eye level and take short breaks to prevent eye strain and repetitive-stress injury. If you use a plotter or large-format printer, keep fingers clear of feed rollers and follow the manufacturer's lock-out procedure before clearing a paper jam.

The Irrigation Overlay

The irrigation layout is drawn on a separate, transparent overlay or second plan sheet at the same scale, so it can be read independently or placed over the planting plan. Mark:

Zone logic is not arbitrary. Each zone must contain only one precipitation-rate category—you cannot mix rotary heads (which apply water slowly) with fixed-spray heads (which apply water quickly) in the same zone. Mixing types creates over- or under-watered areas and is a common exam topic for both the NALP credential and state pesticide applicator contexts where irrigation overlaps with chemical application timing.

For each zone, calculate the total irrigated area in square feet and document your chosen head or emitter type by citing the manufacturer's specification sheet (model number, precipitation rate in inches per hour, and throw radius or drip flow rate in gallons per hour). Record all choices in a brief written equipment-selection justification.

Safety note: Irrigation work near electrical conduit or buried utilities requires a utility-locate call (811 in the US) before any trenching. Document the locate clearance date in your package.

Materials Quantity Take-Off

A take-off is a systematic count and measurement of every material needed to build the project. Build your spreadsheet in these columns: Item | Unit | Quantity | Unit Cost | Extended Cost.

Plants: Total each species from your plant schedule.

Mulch: Measure each bed area in square feet. Multiply area (sq ft) × depth (ft) ÷ 27 to convert cubic feet to cubic yards. A standard residential mulch depth is 3 inches (0.25 ft).

Edging: Measure bed perimeter linear footage from the plan.

Irrigation components: Count heads, emitters, valves, and pipe linear feet by zone.

Hardscape: Count or measure any flagstone, gravel, or pavers in the appropriate unit (square feet, tons, or pieces).

Apply current regional supplier prices to each line item to produce a line-item cost estimate. Then calculate a simple gross margin: Gross Margin (%) = (Selling Price − Material Cost) ÷ Selling Price × 100. Typical landscape gross margins vary widely by market; use the figures provided in your regional extension cost-of-production guide rather than inventing a number.

Math accuracy requirement: All calculations must be within 10% of the instructor key to pass the rubric. Show your work in clearly labeled cells so errors can be traced and corrected.

Seasonal Maintenance Calendar

The final document is a calendar that tells the client—and the crew—what tasks occur in each season: fertilization windows, pruning timing by species, irrigation startup and winterization dates, mulch refresh schedule, and any integrated pest management (IPM) scouting intervals. Tie fertilization and pesticide application notes to your state pesticide applicator license requirements: remind the client that any restricted-use pesticide application must be performed by or under the direct supervision of a licensed applicator.

Assembling the Package

Organize the final package as: (1) Cover sheet with project name, address, date, and your name; (2) Planting plan with plant schedule; (3) Irrigation overlay with equipment-selection justification; (4) Materials take-off and cost estimate spreadsheet; (5) Seasonal maintenance calendar. Keep a digital backup. This package is your capstone evidence for the NALP portfolio review.

Key terms10

Scaled planA drawing in which a stated ratio (e.g., 1 inch = 10 feet) relates distances on paper to actual distances on the ground; all measurements must be consistent with that ratio throughout the drawing.
Plant scheduleA table attached to a planting plan that lists, for each plant symbol, the botanical name (genus, species, cultivar), common name, installation size, on-center spacing, and total quantity required.
Precipitation rateThe depth of water, expressed in inches per hour, that an irrigation head or emitter applies to a given area; heads in the same zone must share the same precipitation-rate category to irrigate evenly.
Materials quantity take-offA systematic spreadsheet listing every material—plants, mulch, edging, irrigation parts, hardscape—with its unit, calculated quantity, unit cost, and extended cost, used to produce a line-item cost estimate.
Cubic yard conversionThe process of converting a volume measured in square feet and inches of depth to cubic yards by multiplying area (sq ft) × depth (ft) and dividing by 27, since one cubic yard equals 27 cubic feet.
Gross marginA profitability measure calculated as (Selling Price − Material Cost) ÷ Selling Price × 100, expressed as a percentage; it represents the share of revenue remaining after material costs are recovered.
Irrigation zoneA section of an irrigation system controlled by a single valve; all heads or emitters in one zone must have matched precipitation rates and serve areas with similar water requirements.
Point of connection (POC)The location where the irrigation system taps into the water supply, typically after the water meter and backflow preventer; it must be marked on the irrigation plan.
Integrated pest management (IPM) scoutingScheduled, systematic inspection of a landscape for pest and disease signs, used to make evidence-based treatment decisions rather than applying pesticides on a fixed calendar regardless of pest pressure.
Portfolio artifactA completed, professional work sample—such as a documentation package—submitted to a credentialing body as evidence of competency; NALP Landscape Industry Certified candidates are expected to demonstrate work of this quality.

Worked examples4

1. A planting bed is 45 feet long and 8 feet wide. You plan to apply mulch at a standard depth of 3 inches. How many cubic yards of mulch are required?
  1. Step 1 – Calculate bed area in square feet: 45 ft × 8 ft = 360 sq ft.
  2. Step 2 – Convert depth to feet: 3 inches ÷ 12 inches/ft = 0.25 ft.
  3. Step 3 – Calculate volume in cubic feet: 360 sq ft × 0.25 ft = 90 cubic feet.
  4. Step 4 – Convert cubic feet to cubic yards: 90 ÷ 27 = 3.33 cubic yards.
  5. Step 5 – Round up to the next practical order quantity: order 3.5 cubic yards to account for settling and slight measurement variance.
Answer: 3.33 cubic yards (order 3.5 cubic yards).
2. Your cost estimate shows total material costs of $4,200 for a project. You want to sell the job at a gross margin of 40%. What is the minimum selling price to achieve that margin?
  1. Step 1 – Write the gross margin formula rearranged for selling price: Selling Price = Material Cost ÷ (1 − Gross Margin).
  2. Step 2 – Convert the target margin to decimal: 40% = 0.40.
  3. Step 3 – Calculate: Selling Price = $4,200 ÷ (1 − 0.40) = $4,200 ÷ 0.60.
  4. Step 4 – Divide: $4,200 ÷ 0.60 = $7,000.
  5. Step 5 – Verify: Gross Margin = ($7,000 − $4,200) ÷ $7,000 = $2,800 ÷ $7,000 = 0.40 = 40%. ✓
Answer: The minimum selling price is $7,000.
3. Irrigation Zone 2 covers a rectangular lawn area 60 feet × 30 feet. You are using fixed-spray heads with a stated precipitation rate of 1.5 inches per hour. A colleague suggests adding one rotary head (precipitation rate 0.4 inches per hour) to the same zone because it reaches a corner. Is this acceptable, and why?
  1. Step 1 – Identify the precipitation rates: fixed-spray = 1.5 in/hr; rotary = 0.4 in/hr.
  2. Step 2 – Apply the matched-precipitation-rate rule: all heads in a single zone must be the same precipitation-rate category so every part of the zone receives the same depth of water per run time.
  3. Step 3 – Compare rates: 1.5 in/hr vs. 0.4 in/hr are not matched (a ratio of nearly 4:1).
  4. Step 4 – Conclusion: Adding the rotary head to Zone 2 is not acceptable. The rotary area would receive far less water per cycle while the spray heads may over-water the rest of the zone.
  5. Step 5 – Corrective action: Create a separate zone for the rotary head, or replace it with a fixed-spray head sized to cover the corner at the same precipitation rate.
Answer: Not acceptable. Mixing head types with different precipitation rates in one zone causes uneven irrigation. The rotary head must go in a separate zone.
4. Your plant schedule lists 12 Quercus palustris (Pin Oak), 8 Ilex opaca (American Holly), and 20 Hemerocallis 'Stella de Oro' (Daylily). Oaks are $95 each, hollies are $55 each, and daylilies are $9 each. What is the total plant material cost?
  1. Step 1 – Calculate oak cost: 12 × $95 = $1,140.
  2. Step 2 – Calculate holly cost: 8 × $55 = $440.
  3. Step 3 – Calculate daylily cost: 20 × $9 = $180.
  4. Step 4 – Sum all plant costs: $1,140 + $440 + $180 = $1,760.
  5. Step 5 – Enter $1,760 as the 'Plants' line item in your take-off spreadsheet.
Answer: Total plant material cost is $1,760.

The math in this lesson1

Learners compute mulch volume for a 45 ft × 8 ft bed at 3 inches and convert to cubic yards.
G-GMD.3
Brush up in the math halls at newSchoolWorks.com:
In class: Develop a final scaled planting plan (minimum 1 inch = 10 feet) showing bed outlines, hardscape or edging features, plant placement symbols keyed to a plant schedule that lists botanical name, common name, size at installation, spacing, and quantity; verify that all selections meet site-analysis constraints identified in Lesson 1. · Overlay a basic irrigation layout on a second plan sheet showing head or emitter placement, zone boundaries, and water source connection point; calculate the total area irrigated per zone and select appropriate emitter or head type from manufacturer spec sheets, documenting choices in writing. · Build a materials quantity take-off spreadsheet listing all plants, mulch (calculated in cubic yards for the planned bed areas at a standard depth), edging linear footage, irrigation components, and any hardscape materials; apply local supplier price estimates to produce a line-item cost estimate and a simple gross-margin calculation.
Materials: Laptop with drawing or design software, scaled base plan from Lesson 1, plant schedule template, irrigation layout worksheet, manufacturer irrigation spec sheets, mulch/material quantity calculation worksheet, spreadsheet software, regional supplier price lists or extension cost-of-production guides, NALP Landscape Industry Certified study reference
Check: Documentation package is evaluated against a rubric covering drafting accuracy (plan is legible and correctly scaled), botanical name accuracy (no more than one error per ten plants), irrigation zone logic (each zone limited to one precipitation-rate category), and math accuracy on the take-off and cost estimate (all calculations within 10% of instructor key); minimum passing score is 70% across all rubric categories before moving to installation.

Practice check8

Answer each question, then check it. Nothing is recorded; this is your own practice.

NALP Landscape Industry Certified – Design and Estimating
1. A student draws a planting plan at a scale of 1 inch = 10 feet. On the plan, a bed measures 3.5 inches long. What is the actual length of the bed in the field?
NALP Landscape Industry Certified – Design and Estimating
2. Which information is required in a plant schedule but is NOT typically shown as a graphic symbol directly on the planting plan?
NALP Landscape Industry Certified – Design and Estimating
3. A planting bed is 50 feet long and 6 feet wide. Mulch is to be applied at a depth of 3 inches. How many cubic yards of mulch are needed?
NALP Landscape Industry Certified – Irrigation
4. Why is it improper to mix fixed-spray irrigation heads and rotary heads in the same irrigation zone?
NALP Landscape Industry Certified – Design and Estimating
5. Material costs for a project total $5,400. The contractor wants to achieve a 35% gross margin. What should the selling price be?
NALP Landscape Industry Certified – Safety
6. Before any irrigation trenching on a client property, what safety step is legally required in the United States?
State Pesticide Applicator – Laws and Regulations
7. A seasonal maintenance calendar should note that applications of restricted-use pesticides must be performed by or under the direct supervision of:
NALP Landscape Industry Certified – Design and Estimating
8. On a professional planting plan, plant symbols typically show circles sized to represent:
Record this lesson on my transcript. Sign in with your key and enrollment email to record lessons (enroll free if you have no key). This page stays open to read and practise.
← Previous lessonProgram planNext lesson →