Building Fabrics - Lead

RE: Building Fabrics - Lead

Duncan Brown — Mon, 13 Nov 2017 15:27:57 GMT

Gareth - you already have it

Regards,

RE: Building Fabrics - Lead

Gareth Griffiths — Mon, 13 Nov 2017 15:23:47 GMT

Thanks very much for the reply. I will see if I can download the DMAT program to add Lead as a material.

Kind Regards

RE: Building Fabrics - Lead

Duncan Brown — Mon, 13 Nov 2017 15:05:49 GMT

Hi Gareth

CIBSE Guide A (1999), appendix 3.A7, Table 3.41 gives the following for lead:

Density 11340 kg/m³
Thermal Conductivity: 35 W/mºC
Specific Heat: 130 J/kgºC

Table 3.48 gives ALL metals an infinite Vapour Resistivity. We generally have metals set to 50,000 Gns/kgm, so that would seem a reasonable figure to use.

The Fabric program has a limit of 5000 Gns/kgm for Special Solid Surfaces, so you may wish to use the DMAT program (available in the Mechanical Design section) to add Lead to the Metals class.

Regards,