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Calculation templates

Concrete Column Design Calculator to AS 3600

Wind Loading Calculator to ASCE 7-10

Neutral Axis Calculator: RC Section

Wood Column Design Calculator

Wood Beam Calculator to AS 1720.1

Purlin and Girts Size Calculator to AISI

Rectangular Spread Footing Design to ACI

Standard Steel Section Designer to AS4100

Fillet Weld Group Calculator to AS 4100

Bolt Group Calculator to AS 4100

Slab Thickness Calculator to ACI 360R-10

Steel Beam and Column Designer to AISC

Structural Engineering Calculators

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This calculator follows the procedures and guidelines of the American Institute of Steel Construction (AISC) Specification of Structural Steel Buildings - Allowable Stress Design and Plastic Design - 9th Edition 1989 (AISC 360). 

It calculates actual and allowable stresses in members when subjected to axial load and/or uniaxial or biaxial bending. Therefore it is applicable to both beams and columns. The final result is computed as a Stress Ratio (S.R) of actual stress to allowable stress. A member with S.R ≤ 1 is deemed adequate against strength checks. 

❗ This calculation has been written in accordance with AISC 360. 

The American and British Standards method for design is to compare "allowable stresses" against "actual stresses", where actual stresses are based upon characteristic loads with an overall Factor of Safety (FoS). 

The design checks to ACI 360R-22 are based upon ensuring:

The Stress Ratio (S.R.) checks against the combined actions of axial and flexure. A steel section with S.R. ≤ 1 is deemed safe against strength checks. 

More information about parameters and equations used for column design according to AISC are discussed below:

This calculator follows the procedures and guidelines of the American Institute of Steel Construction (AISC) Specification of Structural.

Design RC columns per AS 3600 effortlessly with our Free-to-Use Concrete Column Design Calculator.  Try the RC Column Designer today!

Concrete Column Design Calculator - CalcTree

This calculator does wind loading analysis for buildings and structures. It is split into five sub-sections depending on application. For each, wind pressure coefficients and parameters are selected or calculated in order to compute the net design wind pressures. 

This calculation has been written in accordance with ASCE 7-10. An updated revision, ASCE 7-22 exists. Any discrepancies between the two revisions are noted.

Wind Load (Any Height)

Wind Load (Low-Rise)

Wind Load (Wall Components & Cladding)

Wind Load (Roof Components & Cladding)

Wind Load (Open Building)

Buildings and their components must be designed to withstand code-specified wind loads. Wind load is the force exerted on a structure by the wind.

ASCE 7 provides methods for calculating the design wind pressure based on two categories of applications: the main 

 (MWFRS) or components and claddings (C&C).

The process to calculate the wind load involves:

❗The ground elevation factor, Ke is a new factor in ASCE 7-22. It is not considered in this calculator, though ASCE 7-22 permits Ke = 1 for all elevations and so the calculator is still valid. 

ASCE 7-10 provided two methods to calculate the design wind pressures: a simplified procedure and an analytical procedure. ASCE 7-22 has removed the simplified method. This calculator is based on the ASCE 7-10 analytical procedure that is still valid in ASCE 7-22.

ASCE 7-22 provides four separate chapters for determining the design wind pressures, based on application:

Wind loading analysis in all five sub-sections of this 

 involve the following input parameters. 

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Program is based on Alex Tomanovich's "ASCE705W" program and modified by David Taylor and William Fultz. Version 2.4 (10/20/2015). Taken from https://www.steeltools.org/load.php.

Optimize Designs with Free-to-Use Wind Loading Calculator to ASCE 7-10. Try our online engineering tool for accurate results and efficient solutions.

Wind Loading Calculator to ASCE 7-10 - CalcTree

This template has been designed in accordance with AS3600-2018.

The neutral axis (N.A) is a line that passes through the centroidal depth of a symmetrical cross-section where there are no longitudinal stresses or strain. In an unsymmetrical cross-section, the N.A may differ from the centre of gravity of the centroidal axis.  

You can use this calculator to determine the depth to the Neutral Axis of an RC section in 3 different stages of concrete cracking: 

 in structural engineering applications, picture a beam with an external load applied to it. When a beam is loaded, internal forces develop within it to maintain equilibrium. The internal forces in a beam have two components: 

There’s an area in the middle of the beam’s cross-section that is neither stretched nor squashed; this is known as the 

. At this point within the beam's cross-section, internal stresses are 

from top to bottom – passing through zero at the neutral axis. At this point, compressive and tensile stresses are in equilibrium - no internal stresses exist.

The location of the neutral axis depends on the 

of the RC section. Three different stages can be defined for the determination of 

Efficiently determine the neutral axis for RC sections on CalcTree. Free-to-use Neutral Axis Calculator. Try it now!

Kenny Kim

Neutral Axis Calculator - RC Section

This calculator allows the user to assess the structural integrity of timber columns to ensure compliance with the Australian Standard AS 1720.1:2010. The calculation will identify the design capacities of timber columns to meet flexural, shear and deflection design requirements to Ultimate Limit State (ULS) and Serviceability Limit State (SLS) methods. 

❗This calculation has been written in accordance with AS 1720. 

Australian Standards set out guidelines and minimum requirements for material properties, design parameters, design procedures and calculation methods. Here, we explain some pertinent timber properties that should be considered carefully when undertaking timber design calculations. 

Design Properties of Structural Timber Elements

Design capacities for all structural timbers are obtained by modifying characteristic capacities with factors appropriate to service conditions and material property type. This process applies to all types of timber.

Permissible allowable stress limits or design limit capacities of timber columns are then calculated for each check by multiplying the relevant characteristic properties, modification factors and geometric properties together:

Efficiently design timber columns to AS 1720.1 standards on CalcTree. free-to-use Timber Column Design Calculator. Calculate now

This wood beam calculator allows the user to assess the structural integrity of timber beams to ensure compliance with the Australian Standard AS 1720.1:2010. The calculation will identify the design capacities of timber beams to meet flexural, shear and deflection design requirements to Ultimate Limit State (ULS) and Serviceability Limit State (SLS) methods. 

💬 We'd love your feedback on this template! 

Australian Standards set out guidelines and minimum requirements for material properties, design parameters, design procedures and calculation methods. Here, we explain some pertinent 

 that should be understood and carefully considered when undertaking timber design calculations. 

AS1720.1 provides detailed guidelines for Ultimate Limit State (ULS) design. The calculation methods for design bending moment, shear and bearing capacities of structural timber members, joints and fasteners are robust enough to account for different scenarios and environmental factors. Permissible allowable stress limits or design limit capacities of timber beams are then calculated for each check by multiplying the relevant characteristic properties, modification factors and geometric properties together:

Calculate size of timber beam with precision using AS 1720.1 standards. Access the ultimate Free-to-use wood Beam Calculator on CalcTree. Try now

Wood Beam Calculator to AS 1720.1 

Welcome to CalcTree's Purlin and girt design tool! You will be able to determine the member capacities for purlins and girts according to American Iron and Steel Institute (AISI) S100-16. The purlins are manufactured by AEP. 

For details of how to design purlins and girts, check out our design guide

❗This calculation has been written in accordance with AISI S100-16

Here is a brief summary to get you up to speed:

Calculate and determine capacities for purlins & girts with on CalcTree. Free-to-use Purlin Size Calculator. Calculate now!

Purlin Size Calculator | Find Purlin and Girt Capacities

Analyze rectangular spread footings to ACI standards on CalcTree. Free-to-Use engineering calculator. Get results now!

Rectangular Spread Footing Design Calculator

Design standard steel sections with ease on CalcTree. Free-to-Use Steel Section Properties Calculator as per AS4100. Calculate now!

Standard Steel Section Properties Calculator - AS4100 

This calculator allows the user to analyse and check each 

. The user defines the weld group geometry by inputting the start and end coordinates of each weld line. Using user input forces, the calculator then checks the shear force at each end of each weld line to to ensure the critical design shear is considered.

A typical connection with a weld group is a beam to column welded connection.

❗This calculation has been written in accordance with Australian Standard AS 4100. 

Table (4)

Weld group design check summary

Table (2)

Welding is used in the fabrication of steelwork and is particularly useful in connections and for combining several plates or sections into built-up sections with greater capacity then available rolled sections. More then one weld line forms a 

. A weld group is subject to in-plane eccentric forces and moments. 

Check the capacity of your weld group to AS 4100 standards with our free-to-use Fillet Weld Strength Calculator. Calculate now

Fillet Weld Strength Calculator to AS 4100

Use our free Bolt Group Calculator to AS 4100 online! Simplify engineering tasks with ease. Fast, accurate, and reliable results. Try it now!

Bolt Group Calculator to AS 4100 - CalcTree

Free to Use slab thickness calculator to ACI 360R-10. Design Strong Foundations Easily. Calculate on-ground slab thickness now.