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
＝
ho
tw,beam
＝
14.8 in
0.525 in
＝28.2
(Equation 9-11)
λp
＝0.475
√lll
k1E
Fy,beam
＝0.475
√lll
6.97 (29,000 ksi)
50 ksi
＝30.2
(Equation 9-12)
(λ＝28.2)≤
(λp＝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, pf :
Ce
＝1.2
(Surface Roughness Category: B) (Exposure Of Roof: Sheltered)
(Table 7.3-1)
Ct
＝1.3
Structures intentionally kept below freezing
(Table 7.3-2)
Is
＝1.1
Risk Category
Is
I
0.8
II
1.0
III
1.1
IV
1.2
(Risk Category: III)
(Table 1.5-2)
pg
＝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.
