Florida Building Code (FBC) 8th Edition, ASCE 7-16, and local Orlando amendments jointly define the requirements for wind pressure delineation, material callouts, and connection detailing on residential permit documents. The City of Orlando overlays its own risk-category wind speed values and expects comprehensive wind load documentation and callouts on plan sets. From roof plans to hardware schedules, every drawing sheet, specification, and note must map unambiguously to these governing codes, and plan reviewers in Orlando routinely redline drawings that fall short. High-wind design isn’t merely a checklist-it's an interlocking drafting standard that spans site plan general notes, roof pressure diagrams, window/door schedules, and every section cutting through a structural connection.

Roof Plan Wind Zone Delineation and Pressure Callouts: FBC R301.2.1.2.1 and ASCE 7-16

Code-Driven Wind Zone Mapping for Orlando Roofs

Under FBC Section R301.2.1.2.1, every new residential structure in Orlando must account for the wind loads prescribed in ASCE 7-16. The roof plan must delineate the roof into wind "zones" per ASCE 7-16’s Figures C30-1 (for hipped and gable roofs) and corresponding tables. Typical Orlando risk category II buildings (detached dwellings) use a basic wind velocity of 135 mph ultimate, interpolated from city code Section 13.3 (library.municode.com).

  • Zone 1 (Field): Main plane of the roof, lowest design pressures
  • Zone 2 (Edge): Perimeter strip along each roof edge, with elevated pressures due to vortex shedding
  • Zone 3 (Corner): Corners-sometimes with their own tripled edge pressures

The width of Zones 2 and 3 is calculated as 10% of the least horizontal building dimension or 0.4 times the mean roof height, but not less than 4 ft or greater than the minimum dimension. These delineations must be shown visibly on the roof plan using dashed lines, labeled callouts (such as “Zone 3 - Corner”), and with actual dimensions noted (e.g., “Zone 2 width = 5’-6””). FBC R301.2.1.2.1 mandates that these wind effects, and resulting pressures, are “indicated by zone on plan.”

Pressure Table Callouts and Drawing Conventions

ASCE 7-16 Table 30.4-1 and Figures C30-1/2 provide pressure coefficients for each zone based on roof slope, exposure, and geometry. The drafters’ standard is to create an on-sheet schedule adjacent to the roof plan, formatted as:

  • Zone 1 (Field): -32 psf (neg), +17 psf (pos)
  • Zone 2 (Edge): -47 psf (neg), +19 psf (pos)
  • Zone 3 (Corner): -65 psf (neg), +19 psf (pos)

Each value is derived from site-specific calculations using the project’s wind speed, exposure B or C, mean roof height, and enclosure classification. Calculations are performed per ASCE 7-16 Chapter 30. Plans must reference the figure and method, e.g., “Wind pressures per ASCE 7-16, Fig. C30-1, Exposure C.” If calculations are submitted on a separate engineering sheet, the architectural plan must still show tabulated zone pressures and physically demarcated zones (CADDtools wind pressure calculator).

Common Orlando Plan-Review Redlines: Roof-Specific Issues

  • “Provide delineation and pressure callouts for each roof zone as per ASCE 7-16” (City of Orlando plan review comment, 2023).
  • “Calculated design pressures must be shown on sheets and stamped by PE/RA” (per roofvista.com).
  • “Show minimum sheathing thickness and nailing schedule for each zone” (BOAF).

The underlying issue is often omission of zone lines, missing pressure tables, or relying solely on prescriptive tables without justification. Standard practice is to provide both a roof diagram and table, keyed to each edge and corner zone.

Typical Roof Material and Fastener Specs for Orlando

  • Roof sheathing: Minimum 7/16" OSB or plywood (FBC R803.2.2), often increasing to 5/8" in higher-exposure sites
  • Fasteners: 8d ring shank nails at 4” o.c. in corner zones, 6” o.c. field-per FBC Table R803.2.3.1 and manufacturer's requirements
  • Hurricane ties and truss clips: Stainless or hot-dip galvanized, spaced at every truss seat (FBC R802.11.1)

All pressure, fastening, and sheathing callouts must reference their compliance with current FBC sections and list manufacturer/model when proprietary hardware or roofing systems are specified.

Detailing Windborne Debris Protection for Fenestration: FBC R301.2.1.2.2 and Product Approvals

Windborne Debris Regions and Code Requirements

Residential structures in Orlando frequently fall within windborne debris regions, especially projects within 1 mile of the Intracoastal Waterway, lakefront, or open terrain (FBC definition; local determination by zoning and GIS overlays). FBC R301.2.1.2.2 requires “glazed opening protection in windborne debris regions” per ASTM E1996 Large Missile Test standards, regardless of whether the product is impact glass, panel shutters, or a tested system. Garage doors with glazing must additionally comply with ANSI/DASMA 115.

  • Plan reviewers reference FL Product Approval database for verification. Windows, sliding glass doors, and entry doors must appear on the window/door schedule with their FL# or Miami-Dade NOA number visible, including the exact tested configuration and design pressure.

Drawing-Sheet Callouts and Section Details

  • Window Schedule Example:
    W1 - Single-Hung Impact Window, FL# 12345.6, DP +/-50 psf, Large Missile Impact Rated, Aluminum Frame, Glazing: 5/16” Laminated, U-0.36, SHGC 0.25
  • Elevation Sheet Callouts:
    “W1: Impact-Rated per ASTM E1996, Zone 2, DP +/-50 psf, See Schedule”
  • Wall Section Detail:
    Show window frame embedment, anchor type/size, and spacing per product approval. Callout: “(6) #10 x 4" ss tapcons at jambs/heads/sills, per FL# 12345.6 install sheet.”
  • General Notes:
    “All exterior windows/doors in windborne debris regions to comply with FBC R301.2.1.2.2 and Florida Product Approval. No substitutions allowed.”

Plans omitting FL#s, missing zone-specific DP ratings, or failing to call out approved fastener layouts are routinely redlined and delayed. Product substitutions during construction require resubmission to plan review (Florida Statutes 553.842).

Material Specs and Required Ratings

  • Glass: Laminated, two sheets with 0.090” PVB interlayer minimum, tested per ASTM E1996 Large Missile Impact, configuration per FL Product Approval
  • Frames: 6063-T5/T6 aluminum, PVC or pressure-treated wood, all rated to meet/exceed DP for project pressures
  • Fasteners: Stainless steel (ASTM F593 or AISI 300 series), length and spacing per product installation
  • Shutters: If used, panelized or accordion, each with FL# and mounting details. Callout: “Storm panel shutter, FL# 23456.2 - Mount each vertical at 12” o.c. with #12 Phillips truss head screws, per approval.”

Every product’s DP rating must be equal to or greater than the highest calculated pressure at its installed zone. Reviewers frequently redline schedules where generic/“TBD” values appear.

Continuous Load Path Detailing: Framing Plans, Sections, and Hardware Schedules (FBC R602, R802)

Mandatory Load Path Connection Documentation

Continuous load path-directing roof uplift, wall shear, and foundation anchorage-is central to every wind-pressure-resistant design under FBC 8th Edition. Wall framing (R602), roof ceiling assembly (R802), and all connection hardware must illustrate a direct lateral and vertical force route from sheathing to soil. Drawings must show:

  • Anchor bolt layout at foundations, size/spacing/embedding; e.g. “½” Ø x 10” anchor bolts @ 48” o.c. max, min. 7” embedment, w/ plate washers” (Orange County Plan Review Guide)
  • Holdowns or shear anchors at braced wall panels, model number, and bolt pattern: “Simpson HDU2 holdown, (2) ½” Ø x 12” anchor bolts, 1 per end of shear wall”
  • Sheathing/nailing schedule: “7/16” OSB, nail 8d @ 4” o.c. edges, 6” o.c. field at corners, as per FBC Table R602.3(1)”
  • Truss-to-wall or rafter-to-plate hardware: “Simpson H2.5A hurricane tie @ each truss seat, typ.” (per FBC R802.11.1)

Main plans show generic anchor locations, while enlarged details clarify hardware orientation, nail layout, and connection sequence. Hardware schedules not only list manufacturer/model, but also required capacity: “Truss-to-wall clip, min. uplift resistance 750 lbs, Simpson H2.5A or equiv.”

Typical Redlines at Plan Review and Job Site

  • “Wall sheathing nailing schedule missing at braced panels. Provide detail.”
  • “Continuous load path not clear-wall to roof connection not specified. Show strap/hardware type and spacing.”
  • “Anchor bolt size/spacing unclear-foundation detail must show dimensioned locations.”

Section details must cross-reference plan keys so field construction aligns with code intent. “Simpson H1” can be rejected if uplift resistance calcs require a heavier-duty anchor; all hardware must be spec’d to cover the calculated forces in each load path branch. Absence of stubbornly clear hardware callouts almost always forces a resubmittal (City of Orlando Permit Documents).

Wind Design Criteria on General Notes and Site Plans: R301.2.1, Wind Speed and Exposure (R-1 Zoning)

General Notes Requirements: Wind Speed, Exposure, and Risk Category

Orlando enforces design wind speeds within its zoning overlay per FBC R301.2.1 and city code:

  • Risk Category I: 125 mph (warehousing, agricultural)
  • Risk Category II: 135 mph (dwellings, most residential)
  • Risk Category III/IV: 145 mph (critical, essential facilities)

General notes must list the specific FBC edition, wind speed, exposure category (“B” for suburban/wooded sites, “C” for open terrain near Lake Eola, etc.), risk category, site soil bearing, and internal pressure coefficient. A minimum example note for R-1 (Single-Family) Zoning:

WIND DESIGN CRITERIA
Design wind speed: 135 mph (Ultimate), ASCE 7-16, Risk Cat II
Exposure Category: B
Mean Roof Height: 21'-0"
Enclosure: Enclosed
Internal Pressure Coefficient: ±0.18
All structural components designed per FBC 8th Ed (2023), Section R301.2.1.

Site plans, particularly for infill or lakeshore sites, must also show the exposure boundary (“Exposure transitions to C at E. Colonial Dr. per field conditions”) and annotate any significant open terrain factors with reference to ASCE 7 Section 26.7.

Redlined or Missing Data and Common Review Issues

  • “Site-specific wind speed/exposure not shown on General Notes-plan must be updated.”
  • “Exposure B incorrectly applied-must use C for site per proximity to lakefront.”
  • “Omission of continuous load path/anchorage in general notes.”

Redline resolution requires amending the plan’s notes, wind speed, or exposure per reviewer guidance and updated site context. Plans using default “130 mph” or “Exposure B” for all lots are corrected to FBC- and city code-specific values (theroofingbook.com). Reviewers often ask for direct citations of FBC Section R301.2.1 in the notes to reduce ambiguity.

Material Specs Triggered by Wind Criteria Notes

Site plan or general note wind speeds drive downstream specs:

  • Roofing: Shingle class or tile attachment must show code compliance (“Class F shingle per ASTM D3161 or D7158, tested to 130+ mph at covering corners”)
  • Wall bracing: Sheathing thickness and nailing schedule (“See Table R602.3(1), 7/16” OSB @ 8d 3” o.c. edges in corner zones”)
  • Glazing: “Impact-rated units in conformance with DP values from wind pressure schedule”

Failure to correlate these with the declared site wind speed or exposure often results in permit holds. Drafters routinely supply a code reference index to streamline reviewer sign-off.

Punchlist: Addressing Orlando Permit Redlines and Jobsite Call-outs for Wind Pressure Drawings

Orlando-Specific Permit Redlines: Typical Deficiencies and Fixes

City of Orlando permit reviewers expect a complete wind load chain-on-sheet wind speeds, zone diagrams, DP-rated window and door schedules keyed to actual product approvals, and continuous hardware detail. The most frequent plan review redlines and field correction notices include:

  • Incomplete or Missing Wind Load Calculations: Omission of the design wind speed (Vult), exposure, risk category, mean roof height, or enclosure classification. All must appear in both calculation appendixes and summary tables on actual drawing sheets.
  • Lack of Wind Zone Delineation: Roof plans missing labeled lines and zone-specific pressure callouts. Reviewers cite “ASCE 7-16 Figs. C30-1/2” for compliance (caddtools.com).
  • Product Approvals Not Shown/Not Current: Omission or outdated FL#/NOA on window/door schedules gets flagged. FBC requires traceable, installed product approvals, not generic placeholders.
  • Hardware Schedules Unclear: Details missing the manufacturer, model, or capacity per connection. “Spec hurricane tie at each truss seat, Simpson H2.5A or equal, uplift = 750 lbs, install per Mfr.”

Drawing Layout and Detail Conventions for Orlando

  • Title Block: Full code callout, adopted FBC edition, wind speed/exposure, sheet number, project name, PE/RA seal as required.
  • General Notes: All design criteria, risk category, exposure, code references, and product approval statement.
  • Plan Views: Roof plan with zones, wall layout with shear/holdown locations, clearly labeled.
  • Elevations: Height, roof slopes for wind pressure calcs; windows/doors with schedule tags and DP/FL# callouts.
  • Details: Blown-up section cuts of roof-to-wall, wall-to-foundation connections, nailing and anchor schedules keyed to main plans.
  • Schedules: Windows/doors with DP/FL#, hardware/fastener specification with capacity, roof covering fastening schedule referencing FBC section/table.

Standard notations include:

  • “Design wind speed 135 mph ultimate, Exposure B, per FBC R301.2.1; all roof zones to be delineated as shown, ASCE 7-16 Fig. C30-1. See schedule for pressures.”
  • “Windows, doors, and shutters to be installed per FL Product Approval; see schedule for FL#/NOA references and design pressures. All fenestration to meet or exceed zone-specific calculated pressures.”
  • “Continuous load path provided from roof sheathing to foundation as detailed. All connectors/hardware to match specified capacity for calculated uplift/shear.”

Reviewers expect calls such as “Sheathing attachment for Zone 3: 8d ring shank @ 4” o.c. on panel edges and 6” o.c. in field, per FBC Table R803.2.3.1.” Field inspectors will reference these sheets to compare installation with permitted plans and redline deficiencies for correction.

Dimension, Rating, and Specification Examples That Pass Orlando Review

  • Window Schedule: “W4 - Horizontal Slider, FL#12399.2, DP ±60 psf, Large Missile Impact, Laminated IGU 7/16”, Frame: Thermal Break Aluminum-See Section for anchor type/spacing.”
  • Hardware: “Truss Clip: Simpson H2.5A or equiv., 2-0.131" x 2-½" nails each end, Uplift = 750 lbs min., Installed both sides each truss seat.”
  • Roof Sheathing: “ZIP System 5/8” OSB, fasten 8d ring shank @ 4” o.c. on all edges, 6” o.c. field in edge/corner zones; per FBC R803.2.2 for 135 mph wind zone.”

Integrating High-Wind Design Across All Drawings for Orlando Permit Success

In Orlando’s regulatory framework, wind pressure compliance is not isolated to one drawing sheet. It is reinforced by consistent callouts across roof plans, elevations, schedules, and wall sections-everywhere wind pressures, products, or connections could fail. Plans must:

  • Show roof wind zones and call out calculated pressures from ASCE 7-16, not generic “per code” notes
  • Provide explicit, line-item DP ratings and FL#/NOA numbers for every piece of fenestration
  • Detail-and schedule-the specific fasteners and connectors to span the load path from sheathing down
  • Key every specification back to both FBC 8th Edition section and current City of Orlando code tables
  • Cross-reference wind criteria in the general notes (wind speed, exposure, risk category) with the actual schedule/specification data on the structural and architectural sheets

Permit reviewers and field inspectors use these plans as a construction and enforcement tool. Any omission, generalization, or vague note is likely to be flagged-for correction, resubmittal, or even rejected at inspection. Meticulous, code-referenced, zone-sensitive drafting is the foundation for a successful high-wind residential permit plan in Orlando.

For Florida-specific drafting compliant with wind-resistance and high-wind permit processes, Kingsway Drafting & Design delivers precise, detailed sheets that facilitate both plan approval and construction integrity.