Tools for a Variety of Structural Engineering Tasks

Snow Load

Four Different Roof Configurations

Determine snow drift loads in accordance with ASCE 7 for four different roof configurations (Roof Elevation Step, Parapet, Adjacent Structure, Roof Projection).

Descriptions in One Location

No flipping through pages to determine which options apply for surface roughness category, exposure of roof, thermal factor, and risk category.

Multiple Drift Cases per Calculation

Set the snow design criteria once, then add as many drift cases as you need for your project.

Design all seven of AISC's standard shear connection types (Double-Angle, Single-Angle, Tee, Single-Plate, Shear End-Plate, Unstiffened Seated, Stiffened Seated) using LRFD or ASD.

Analyze a group of bolts using the elastic or inelastic methods for a load applied at any location in any direction.

Analyze or Design

Determine the bolt group coefficient by entering the bolt and load locations. Include the design load (either factored or unfactored) and the minimum bolt diameter will also be found. Alternatively, provide the bolt diameter and the stresses in the bolts will be calculated instead.

Instantaneous Center of Rotation

Determine the location of the instantaneous center of rotation automatically.

Choose from five common weld patterns (Single, Double, L-shaped, C-shaped, Rectangular) in all possible orientations.

Elastic and Inelastic Methods

Analyze a weld group using the elastic or inelastic methods for a load applied at any location in any direction.

Automatic Load Combinations

Provide either factored loads or unfactored loads to design the weld. The tool will use the load combinations found in the IBC to combine unfactored loads.

Choose between providing a single, factored load or multiple, unfactored loads (Dead, Live, etc) which will be combined automatically using the IBC Load Combinations.

Concise Input

Input for Steel Connection

CONNECTION CONFIGURATION :

Single-Plate

Double-Angle

Single-Angle

Tee

Single-Plate

Shear End-Plate

Unstiffened Seated

Stiffened Seated

CONNECTION SIZES :

W

16

x

40

Click to display the Beam Steel Type input.

(Calculations will assume A992 steel otherwise.)

W

18

x

71

3/4

1/2

5/8

3/4

7/8

1

1-1/8

1-1/4

1-3/8

1-1/2

in

5/16

3/16

1/4

5/16

3/8

in

DESIGN LOAD :

40

kip

Click to input multiple, unfactored reactions.

(The relevant IBC Load Combinations will be determined automatically.)

Default Materials per Design Manuals

Material types will default to the preferred material specification per the design manuals. You can also change this to another material type or manually set the material strengths.

Input Dimensions Directly on the Drawings

Make adjustments to your design by simply changing the dimensions directly on the drawings and see the effect immediately.

Formulas Written Out and Simplified

Know exactly how the results were determined since calculations show all formulas written out and then with values plugged in.

Detailed Output

Output from Steel Connection

WEB COMPACTNESS :

λ

＝

h_{o}

t_{w,beam}

＝

14.8 in

0.525 in

＝28.2

(Equation 9-11)

λ_{p}

＝0.475

√lll

k_{1}E

F_{y,beam}

＝0.475

√lll

6.97 (29,000 ksi)

50 ksi

＝30.2

(Equation 9-12)

(λ＝28.2)≤

(λ_{p}＝30.2)

(∴ Web is compact, so use Equation 9‑6)

(Part 9)

Code References for Calculations

Calculations include references to the IBC or design standards such as ASCE 7 and the Steel Construction Manual.

Easily Find All Variables

Highlight all instances where a variable is used by moving the mouse over one of them.

Output from Snow Load

FLAT ROOF SNOW LOAD, p_{f} :

C_{e}

＝1.2

(Surface Roughness Category: B) (Exposure Of Roof: Sheltered)

(Table 7.3-1)

C_{t}

＝1.3

Structures intentionally kept below freezing

(Table 7.3-2)

I_{s}

＝1.1

Risk Category

I_{s}

I

0.8

II

1.0

III

1.1

IV

1.2

(Risk Category: III)

(Table 1.5-2)

p_{g}

＝30 psf

(Figure 7.2-1 & Tables 7.2-1 to 7.2-8)

Click this button to submit any questions or comments about this line of the calculations

See a variable description when the mouse is over a variable. Move the mouse over a result to see the table that it came from.

Web Platform

No Software to Install or Update

The tools run using a web browser. This means they can be accessed immediately on any device with an internet connection.

Easily Provide Feedback

Each line of the calculations has a button where you can submit questions. This ensures that the calculations are based on the consensus of the engineers using them.

Multiple Calculations at One Time

Open new tabs or windows to see multiple calculations at the same time. This makes it very easy to compare designs.

Join now and start accessing the tools immediately!

It is free to sign up for Structural Central, which will allow you to access all of the tools. In the future, some features will be limited to users with paid licenses such as saving and printing.