Glass Weight and Dead Load
VitraLab supports glass weight review from pane dimensions, glass thickness, and build-up so dead load can be considered alongside structural glass checks and glass calculation software output.
Typical Inputs
Typical inputs include pane width, pane height, glass thickness, glass type, and build-up. Laminated glass and DGU glass should include each pane, interlayer, and cavity where applicable.
Glass Weight Formula
A common estimate uses glass area multiplied by thickness and density. For early review, glass is often approximated as 2.5 kg per square metre per millimetre of glass thickness.
Tempered Glass Weight
Tempered glass normally uses the same density basis as annealed glass for the same thickness. The strengthening process affects resistance, not the basic weight estimate.
Laminated and DGU Glass Weight
Laminated glass weight depends on the total thickness of the glass plies and any interlayer allowance. Insulated glass units should also be reviewed as a complete build-up when comparing dead load and support reactions.
Glass Load Calculator Context
Glass weight is one part of the design basis. The output should be reviewed together with wind load, snow load, barrier load, ULS stress, SLS deflection, support condition, and project assumptions.
Frequently Asked Questions
How is glass weight usually estimated?
A common early estimate is area multiplied by glass thickness and density, often taken as about 2.5 kg/m2 for each millimetre of glass thickness.
How much does 10 mm glass weigh?
Using the common 2.5 kg/m2 per millimetre estimate, 10 mm glass weighs about 25 kg/m2 before any project-specific allowances are considered.
Is tempered glass heavier than normal glass?
For the same thickness and area, tempered glass is normally estimated with the same density basis. Tempering changes strength characteristics, not the basic weight estimate.
Can this be used as a glass load calculator?
It can support dead load review from glass weight, but wind, snow, barrier, live, maintenance, and project-specific actions still need to be reviewed separately.
Why does glass weight matter in structural glazing?
Glass weight affects dead load, frame reactions, brackets, fixings, handling, installation planning, and the wider structural glass design review.