This is a balcony balustrade secured by the rail cap at top and bottom rail.(open sided)
I spoke with Jeff and he has be trying to get exact install on this stuff himself.
Here is some of what I found so far since this mornings job rescheduled.
Hazard Alert – Balustrade Installation – Glass Breakage
Toughened glass used for frameless panels is a common architectural feature, in balconies of
apartments and around voids in shopping centres, for example.
A number of breakages of frameless glass in balustrades, both during construction and in
service, have been recorded where panels have received a minor impact on the edge. Due to
residual internal stresses from the manufacturing process, toughened glass panels may fail when
subjected to an edge impact load significantly lower than the panel could resist if that load were
applied to the face of the panel.
The cap rail is a metal handrail that rests atop the glass panels of a balustrade. It may be made of stainless steel, brass, aluminum or other metal. Cap rails are available in an array of finishes, such as satin or polished. Typically, you need a sealant or adhesive to secure the rail to the glass. Some cap rails may be bent to accommodate curved glass panels. In many locales, building codes require that the cap railings be able to bear a certain amount of weight independently of the glass to which they are attached. It is important to know and understand the building codes that apply to your project. Not all glass balustrades employ a cap rail.
Read more: Glass Balustrade Components | eHow.com http://www.ehow.com/list_6639012_glass-balustrade-components.html#ixzz0rnIa8OC2
Seems to me that it is not a balanced load anymore.