Encyclopedia of Historic Masonry Restoration

Tower cranes

Tower cranes are profilific in the highrise building construction industry.  They are also oftenen referred to as saddle cranes. The crane in the tower below is set up in a northeast Washington DC job site for a mid rise building construction project. This type of… Read More »Tower cranes

Tympanums, architectural

A tympanum is a decorative wall surface above a window or dor way, commonly in the form of a triangle or semi circle.  This type or decorative architecture is usually not structural. The picture below shows a triangle shaped tympanum. The picture below shows a… Read More »Tympanums, architectural