Follow your curiosity

What discovery has been shared with you?

FACTREE gives you something interesting to discover every day — and something worth talking about together.

Start with one fact. Explore it, go deeper, then follow whichever branch catches your imagination.

Choose subjects for a surprise

Exploring any topic

Begin your discovery

Your next discovery is one click away.

Choose one or more subjects above, or leave Any Topic selected and let curiosity decide.

Technology

Structural Load Calculations

Quick fact

A single floor of a typical office building can carry up to 200 pounds per square foot, including people, furniture, and equipment.

Why this is interesting

Ever wondered why skyscrapers don’t collapse under their own weight? The answer lies in structural load calculations—how engineers ensure buildings can handle all the forces they face.