ASCE 7-22 Wind Load Calculator (Components & Cladding)

Compute Components & Cladding wind pressures per ASCE 7-22: velocity pressure qz, internal pressure qi, net design pressures using user-specified GCp and enclosure. Mobile-first, accessible, and performance-optimized.

Full original guide (expanded)

ASCE 7-22

ASCE 7-22 Wind Load Calculator (Components & Cladding)

Estimate components and cladding design pressures by combining velocity pressure, internal pressure, and GCp coefficients from ASCE 7-22 Chapter 30.

Use this page to verify inputs, see governing pressure directions, and align assumptions before detailed design checks.

Key inputs

  • Ultimate wind speed (Vu): design speed from ASCE maps for risk category.
  • Exposure + height: sets Kz and the velocity pressure profile.
  • Enclosure + GCp: internal pressure and cladding zone coefficients.
  • Kzt and Kd: topographic and directionality factors.

What you get

  • Velocity pressure at height z (qz) and internal pressure at mean roof height (qi).
  • Net pressures for positive and suction cases using GCp and GCpi.
  • Quick audit of assumptions before cross-checking with code tables.
Core formulas
qz = 0.00256·Kz·Kzt·Kd·V^2 (US) or 0.613·Kz·Kzt·Kd·V^2 (SI)
p = qz·GCp − qi·GCpi

FAQ

What does GCp represent in C&C?

GCp is the external pressure coefficient that varies by zone, effective wind area, and surface per ASCE 7-22 Chapter 30.

Which wind speed should I use?

Use the ASCE ultimate wind speed Vu for the site and risk category shown on the official maps or jurisdictional tools.

How do enclosure class and GCpi affect results?

Enclosed, partially enclosed, and open buildings have different internal pressure coefficients; these can govern net pressure direction.

Audit: Needs review
Formula (LaTeX) + variables + units
This section shows the formulas used by the calculator engine, plus variable definitions and units.
Note: This page needs review to confirm formulas and sources.
No formulas provided in audit spec.
Variables and units
  • No variables provided in audit spec.
Sources (authoritative):
Changelog
Version: 0.1.0-draft
Last code update: 2026-01-21
0.1.0-draft · 2026-01-21
  • Initial audit spec draft generated from HTML extraction (review required).
  • Verify formulas match the calculator engine and convert any text-only formulas to LaTeX.
  • Confirm sources are authoritative and relevant to the calculator methodology.
Verification pending · Last code update: 2026-01-21
ASCE 7-22

ASCE 7-22 Wind Load Calculator (Components & Cladding)

Estimate components and cladding design pressures by combining velocity pressure, internal pressure, and GCp coefficients from ASCE 7-22 Chapter 30.

Use this page to verify inputs, see governing pressure directions, and align assumptions before detailed design checks.

Key inputs

  • Ultimate wind speed (Vu): design speed from ASCE maps for risk category.
  • Exposure + height: sets Kz and the velocity pressure profile.
  • Enclosure + GCp: internal pressure and cladding zone coefficients.
  • Kzt and Kd: topographic and directionality factors.

What you get

  • Velocity pressure at height z (qz) and internal pressure at mean roof height (qi).
  • Net pressures for positive and suction cases using GCp and GCpi.
  • Quick audit of assumptions before cross-checking with code tables.
Core formulas
qz = 0.00256·Kz·Kzt·Kd·V^2 (US) or 0.613·Kz·Kzt·Kd·V^2 (SI)
p = qz·GCp − qi·GCpi

FAQ

What does GCp represent in C&C?

GCp is the external pressure coefficient that varies by zone, effective wind area, and surface per ASCE 7-22 Chapter 30.

Which wind speed should I use?

Use the ASCE ultimate wind speed Vu for the site and risk category shown on the official maps or jurisdictional tools.

How do enclosure class and GCpi affect results?

Enclosed, partially enclosed, and open buildings have different internal pressure coefficients; these can govern net pressure direction.

Audit: Needs review
Formula (LaTeX) + variables + units
This section shows the formulas used by the calculator engine, plus variable definitions and units.
Note: This page needs review to confirm formulas and sources.
No formulas provided in audit spec.
Variables and units
  • No variables provided in audit spec.
Sources (authoritative):
Changelog
Version: 0.1.0-draft
Last code update: 2026-01-21
0.1.0-draft · 2026-01-21
  • Initial audit spec draft generated from HTML extraction (review required).
  • Verify formulas match the calculator engine and convert any text-only formulas to LaTeX.
  • Confirm sources are authoritative and relevant to the calculator methodology.
Verification pending · Last code update: 2026-01-21
ASCE 7-22

ASCE 7-22 Wind Load Calculator (Components & Cladding)

Estimate components and cladding design pressures by combining velocity pressure, internal pressure, and GCp coefficients from ASCE 7-22 Chapter 30.

Use this page to verify inputs, see governing pressure directions, and align assumptions before detailed design checks.

Key inputs

  • Ultimate wind speed (Vu): design speed from ASCE maps for risk category.
  • Exposure + height: sets Kz and the velocity pressure profile.
  • Enclosure + GCp: internal pressure and cladding zone coefficients.
  • Kzt and Kd: topographic and directionality factors.

What you get

  • Velocity pressure at height z (qz) and internal pressure at mean roof height (qi).
  • Net pressures for positive and suction cases using GCp and GCpi.
  • Quick audit of assumptions before cross-checking with code tables.
Core formulas
qz = 0.00256·Kz·Kzt·Kd·V^2 (US) or 0.613·Kz·Kzt·Kd·V^2 (SI)
p = qz·GCp − qi·GCpi

FAQ

What does GCp represent in C&C?

GCp is the external pressure coefficient that varies by zone, effective wind area, and surface per ASCE 7-22 Chapter 30.

Which wind speed should I use?

Use the ASCE ultimate wind speed Vu for the site and risk category shown on the official maps or jurisdictional tools.

How do enclosure class and GCpi affect results?

Enclosed, partially enclosed, and open buildings have different internal pressure coefficients; these can govern net pressure direction.

Audit: Needs review
Formula (LaTeX) + variables + units
This section shows the formulas used by the calculator engine, plus variable definitions and units.
Note: This page needs review to confirm formulas and sources.
No formulas provided in audit spec.
Variables and units
  • No variables provided in audit spec.
Sources (authoritative):
Changelog
Version: 0.1.0-draft
Last code update: 2026-01-21
0.1.0-draft · 2026-01-21
  • Initial audit spec draft generated from HTML extraction (review required).
  • Verify formulas match the calculator engine and convert any text-only formulas to LaTeX.
  • Confirm sources are authoritative and relevant to the calculator methodology.
Verification pending · Last code update: 2026-01-21
Formulas

(Formulas preserved from original page content, if present.)

Version 0.1.0-draft
Citations

Add authoritative sources relevant to this calculator (standards bodies, manuals, official docs).

Changelog
  • 0.1.0-draft — 2026-01-19: Initial draft (review required).