CalcBook

CalcBook CalcBook is innovative software that streamlines the production of transparent, professional structural engineering calculations.

10/01/2026

Can a column resist axial load and bending at the same time?
The P–M interaction diagram helps engineers evaluate this combination and check the capacity of reinforced concrete columns. 📊
Save this Reel for your next design review!

09/29/2026

The goal was never to make the Tower of Pisa perfectly straight. It was to keep its famous lean and make it stable. 🏛️

Can a column punch through a slab? 👀Punching shear is a localized failure that can occur where a slab meets a column. Lo...
09/23/2026

Can a column punch through a slab? 👀

Punching shear is a localized failure that can occur where a slab meets a column. Loads concentrate around that connection, and if the slab cannot resist them, cracks can develop through its thickness.

Swipe to see how the failure develops, where engineers check it, and which design measures can help prevent it.

Save this post for your next structural design review. 📌

09/21/2026

From member reactions to connection design.

LoadPath keeps everything connected in one seamless workflow. 🔗⚙️

09/17/2026

Calculate, connect, and export your structural calculations. All organized in one place with CalcBook.

09/16/2026

One change. Every dependent calculation updated.

CalcBook’s LoadPath connects your structural calculations so reactions flow automatically through the entire design.

Update the source and let CalcBook handle the rest.

Would this make your workflow easier?

09/11/2026

Two towers. One structural system.

At Beijing’s CCTV Headquarters, each side depends on the other to support its dramatic suspended section.

SHORT COLUMNS: SMALLER HEIGHT, BIGGER RISK. ⚠️Partial restraints can turn a regular column into a short column, increasi...
09/08/2026

SHORT COLUMNS: SMALLER HEIGHT, BIGGER RISK. ⚠️

Partial restraints can turn a regular column into a short column, increasing stiffness, shear demand, and the risk of brittle failure during an earthquake.

Swipe to see why it happens and how to prevent it.

Happy Labor Day ✨
09/07/2026

Happy Labor Day ✨

09/07/2026

Calculate. Verify. Document. You focus on the engineering, while CalcBook automatically creates professional reports ready to review and present.

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