Structural Load Calculation For Architects

Structural Load Calculation Services With 98% Accuracy

Q: Do you provide structural load calculation services for both residential and commercial buildings?

Yes. Residential load calculation services are provided for single-family and multifamily projects, alongside commercial and industrial load analysis for offices, warehouses, schools, and towers.

Q: Do you provide beam and header sizing for a single load-bearing wall removal?

Yes. Beam load calculation services are provided for single-member checks, including LVL, steel, and engineered lumber headers sized for the specific span and tributary load.

Q: Do you stamp or seal structural load calculations?

No. CAD Drafter is a structural load analysis company, not a licensed engineering office. Calculations are prepared for the client's engineer of record's review and approval.

A wall doesn’t know it’s load-bearing until someone runs the math. CAD Drafter’s structural load calculation services turn your building’s geometry, materials, and site conditions into the dead, live, wind, seismic, and snow load numbers your engineer needs to size a beam, a column, a shear wall, or a footing correctly the first time.
Whether you’re pulling a permit for a single load-bearing wall removal or running gravity and lateral analysis across a five-story podium building, our calculation team works from your plans, your site’s code data, and ASCE 7-22 criteria to hand back a package your engineer of record can review, stamp, and submit.

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What Our Structural Load Analysis Company Actually Does

CAD Drafter is not a stamping engineer’s office. We are a structural engineering services company that architects, contractors, engineers, and homeowners bring in to run the numbers, format the report, and hand off a package that’s already organized the way a plan reviewer expects to see it. Your engineer of record checks the assumptions and signs the seal; we do the modeling and the paperwork in between.

Why Engineers and Builders Outsource Load Calculations

Running full ASCE 7-22 wind, seismic, and snow load derivations by hand eats hours an in-house engineer would rather spend on design decisions. Outsourcing the calculation work means predictable turnaround and a report format that doesn’t need to be rebuilt for every jurisdiction.

Our Structural Load Calculation Services Include

Dead and Live Load Calculations
Wind Load Calculation Services
Seismic Load Analysis Services
Snow Load Structural Calculations
Gravity Load Analysis for Buildings
Beam Load Calculation Services
Roof Truss Load Analysis
Column and Foundation Load Calculations

Sample Upload Plan

Get Your Structural Load Calculations Started

Building Load Calculation Services, Broken Down By Load Type

A single structure carries several load cases at once, and each one governs a different part of the design. Here’s how we approach the load types that make up a complete structural package.

Dead and Live Load Calculations

Material self-weight, finishes, partitions, and occupancy live loads tabulated per ASCE 7-22 Chapter 4, forming the baseline every other load case builds on.

Wind Load Calculation Services

Main wind-force-resisting system and component-and-cladding pressures derived from basic wind speed, exposure category, and building geometry, using the Envelope or Directional Procedure as governed by ASCE 7-22 Chapters 26 through 30.

Seismic Load Analysis Services

Seismic design category, base shear, and story force distribution calculated from site class, spectral response parameters, and the building’s seismic force-resisting system under ASCE 7-22 Chapter 12.

Snow Load Structural Calculations

Ground snow load converted to flat and sloped roof snow loads, with drift, sliding, and unbalanced load cases addressed for valleys, parapets, and adjacent roof steps per ASCE 7-22 Chapter 7.

Gravity Load Analysis for Buildings

Tributary area load-down calculations tracing dead and live loads from roof to footing through every beam, column, and bearing wall in the load path.

Column and Foundation Load Calculations

Foundation plan designs include axial and combined loading run down through columns and posts to the footing, sized against bearing capacity and, where applicable, uplift from wind or seismic overturning.

Outsource Structural Load Calculations Without Slowing Down Your Project

Most of the packages we run are wind and seismic load analysis for mid-rise multifamily projects, alongside beam and header sizing for single load-bearing wall removals that need a fast, defensible number.

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CODE-REFERENCED CALCULATIONS

Every Load Case Run Against The Code That Governs It

Load calculations only hold up at plan review if the reviewer can trace every number back to a code section. We cite the governing standard on every sheet, not just the final result.

ASCE 7-22

Minimum design loads for wind, seismic, snow, rain, and gravity, forming the primary reference for nearly every calculation package we produce.

IBC 2021 & IRC 2021, Chapter 16 / Chapter 3

Jurisdictional load requirements and construction-type provisions that determine which ASCE 7-22 procedures apply to a given project.

AISC 360

Steel design provisions used to check beam, column, and connection capacity once the governing loads are established.

ACI 318

Reinforced concrete strength design provisions applied to column, footing, and shear wall load checks.

NDS (National Design Specification for Wood Construction)

Allowable stress design values for sawn lumber, glulam, and engineered wood members sized under gravity and lateral loading.

AWC SDPWS

Shear wall and diaphragm design provisions used to distribute lateral wind and seismic loads through wood-framed structures.

TIA-222

Structural standard for antenna towers and supporting structures, referenced on communication tower and cell site load packages.

DELIVERABLE TYPES

Load Calculation Package Types We Produce

Every calculation package is organized into the deliverables a plan reviewer and your engineer of record each expect to see, all built from one consistent load-down.

All

Load Calculation Report

A stamped-ready package summarizing every governing load case, assumption, and code reference in the order a reviewer works through them.

Wind Load Analysis

MWFRS and component-and-cladding pressure tables mapped to elevation and roof zones for the specific building geometry.

Seismic Load Analysis

Base shear, story force distribution, and seismic force-resisting system checks tied to the project’s site class and risk category.

Snow Load Calculations

Flat, sloped, drift, and unbalanced snow load cases mapped to every roof plane and step in the building’s roof geometry.

Gravity Load-Down Summary

Tributary load tracing from roof to foundation, documenting the load path through every intermediate beam and bearing point.

Beam & Header Sizing Calculations

Member-by-member sizing checks for bending, shear, and deflection, cross-referenced to the framing plan location they apply to.

Residential

Single Family Residence

Wood Frame, CMU, ICF, Steel, Concrete

Gravity · Wind · Seismic

ADU & Garage Conversion

Wood Frame, Light Gauge Steel

Gravity · Wind

Second Story Addition

Wood, Steel, Engineered Lumber

Gravity · Seismic

Load Bearing Wall Removal

LVL, Steel Beam

Gravity

House Raising & Foundation Repair

Steel Beams, Helical Piles, New Foundation

Gravity · Uplift

Deck, Balcony & Patio Cover

Wood, Steel, Aluminum

Live Load · Wind

Multi-Family & Commercial

Multi-Family Apartments & Condos

Wood, Steel, Concrete, Podium Construction

Gravity · Wind · Seismic

Townhomes & Fourplex

Wood Frame, Light Gauge Steel, CMU

Gravity · Seismic

Office & Medical Office Building

Steel, Concrete, Composite

Gravity · Wind · Seismic

Retail Store & Shopping Center

Steel, Concrete, Masonry

Gravity · Wind

Mixed-Use Building

Podium Concrete + Wood

Gravity · Seismic

Tenant Improvement

Existing Structure + New Steel/LVL

Gravity

Industrial & Institutional

Warehouse & Distribution Center

Pre-Engineered Metal Building, Steel

Wind · Snow · Gravity

Manufacturing Facility

Structural Steel, Concrete

Gravity · Seismic

Hospital & School

Structural Steel, Concrete, Masonry

Seismic · Wind

Gymnasium & Sports Facility

Long Span Steel Trusses, Space Frame

Snow · Wind

Communication Tower

Steel

Wind (TIA-222)

Warehouse Mezzanine

Structural Steel

Gravity · Live Load

Our Process

How CAD Dafter Delivers Structural Load Calculations

Every calculation package follows the same logic an engineer would use by hand, just organized for speed and repeatability. Here’s the 4-step process our CAD Drafting company follows:

Plan & Site Data Intake

We review your architectural plans, framing layout, and the project’s location to pull governing wind speed, seismic parameters, snow load, and exposure data.

Scope Quote & Turnaround

You receive a fixed price and delivery date broken down by load type, whether that’s a single beam check or a full lateral analysis.

Calculation & Internal QC

Our team runs the load-down and lateral analysis, then passes every value through a second-pass check before the report reaches your desk.

Delivery & Revision Rounds

You receive an editable, stamped-ready report, with revision rounds included per your project’s calculation agreement.

6,800+

Load Calculation Packages Delivered

2,100+

Wind & Seismic Analyses Completed

900+

Beam & Header Sizing Requests Turned Around

24-48 Hrs

Standard Package Turnaround

98%
Permit Approval
First Time

WHY CHOOSE US

Why Engineers & Builders Choose CAD Drafter For Load Calculations

Architects, contractors, and structural engineers keep sending us their load calculation scope for one reason: the numbers show their work, sheet by sheet, instead of arriving as a single unexplained result.

We Calculate, Your Engineer Confirms

Every load calculation package carries clearly stated assumptions, code references, and intermediate steps, so your engineer of record can review and stamp without re-deriving the numbers from scratch.

Code-Referenced Load Analysis

Reports cite ASCE 7-22, IBC 2021, IRC 2021, AISC 360, ACI 318, NDS, and AWC SDPWS by chapter and section, not just by name.

Residential Through Industrial Range

Residential load calculation services for single-family and multifamily homes, alongside industrial and institutional load analysis for warehouses, schools, and towers.

Scalable Calculation Capacity

Take on a single beam swap or a full seismic package on a podium building without adding a calculation seat to your own office.

Software Our Load Calculation Team Works In

ENERCALC

RISA-3D

STAAD.Pro

Woodworks

RAM Structural System

BENEFITS OF OUTSOURCING TO US

Why Firms Outsource Structural Load Calculation Services

A staff engineer’s time is worth more spent on design decisions than on re-deriving wind pressure tables for the fifth jurisdiction this month. Outsourced building load calculation services let firms flex analysis capacity against a project pipeline that rarely arrives at a steady pace.

Lower Engineering Overhead: A per-package rate instead of a salaried calculation engineer on staff.

Faster Turnaround: A dedicated calculation team means your load package isn’t queued behind someone else’s deadline. Standard packages release in 24-48 hours.

Built-In QC Review: Every calculation passes a second-pass numerical check before it reaches your desk for approval.

Methods Our Load Calculation Team Works With

ASCE 7-22 Wind Pressure Derivation (Envelope & Directional Procedures)
Equivalent Lateral Force & Modal Response Seismic Analysis
Tributary Area Gravity Load-Down Modeling
Shear Wall & Diaphragm Lateral Distribution
Snow Drift & Unbalanced Load Modeling
Cloud-Based Calculation Review & Markup

Sample contact Us

Our Certificate

1 2 3

Client Feedback To Our Structural Load Calculation Services

★ ★ ★ ★ ★
Wind and seismic package came back with every assumption cited to a chapter and section, so I spent my review time checking the design, not chasing down where a number came from.

Diane MarshStructural Engineer, P.E.

★ ★ ★ ★ ★
Needed a beam calculation fast for a wall removal permit. Had a stamped-ready number back before the inspector’s next visit.

Ray OntiverosGeneral Contractor

★ ★ ★ ★ ★
Podium building’s seismic analysis was organized exactly the way our plan reviewer wanted it, which meant zero load-related redlines on the first submittal.

Priya NairMultifamily Developer

Frequently Asked Question

Do you provide structural load calculation services for both residential and commercial buildings?

Yes. We provide residential load calculation services for single-family and multifamily projects, alongside commercial and industrial load analysis for offices, warehouses, schools, and towers.

Can you calculate wind, seismic, and snow loads together in one package?

Yes. Most projects need all three load cases analyzed together, since wind, seismic, and snow loads often govern different elements of the same structure.

Do you provide beam and header sizing for a single load-bearing wall removal?

Yes. We provide beam load calculation services for single-member checks, including LVL, steel, and engineered lumber headers sized for the specific span and tributary load.

Do you stamp or seal structural load calculations?

No. We are a structural load analysis company, not a licensed engineering office. Calculations are prepared for your engineer of record’s review and approval.

What information do you need to start a load calculation package?

Architectural or framing plans showing the building geometry, the project address for site-specific wind, seismic, and snow data, and the applicable building code and edition.

Structural Load Calculation Services With 98% Accuracy

What Our Structural Load Analysis Company Actually Does

Why Engineers and Builders Outsource Load Calculations

Our Structural Load Calculation Services Include

Get Your Structural Load Calculations Started

Building Load Calculation Services, Broken Down By Load Type

Dead and Live Load Calculations

Wind Load Calculation Services

Seismic Load Analysis Services

Snow Load Structural Calculations

Gravity Load Analysis for Buildings

Column and Foundation Load Calculations

Outsource Structural Load Calculations Without Slowing Down Your Project

Every Load Case Run Against The Code That Governs It

Load Calculation Package Types We Produce

Load Calculation Report

Wind Load Analysis

Seismic Load Analysis

Snow Load Calculations

Gravity Load-Down Summary

Beam & Header Sizing Calculations

How CAD Dafter Delivers Structural Load Calculations

Plan & Site Data Intake

Scope Quote & Turnaround

Calculation & Internal QC

Delivery & Revision Rounds

Why Engineers & Builders Choose CAD Drafter For Load Calculations

Software Our Load Calculation Team Works In

Why Firms Outsource Structural Load Calculation Services

Methods Our Load Calculation Team Works With

Our Certificate

Client Feedback To Our Structural Load Calculation Services

Frequently Asked Question

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