Q. Tim, I’ve never worked with metal joist hangers. How long have joist hangers been around? When I hold one in my hand, I question whether it’s actually strong enough to support all the weight that ...

THE subject matter of this little volume is of great importance to Civil Engineers. All structures resolve themselves ultimately into beams, columns, and arches, of some kind. It is therefore of great ...

Christmas is a time when we often remember the happy days we enjoyed as a youngster. I wondered this year, for example, if ...

Italian restorers have used laser beams to clean an ancient Roman marble column in the piazza outside the prime minister’s office, removing layers of dust and grime that had covered the monument for ...