There are several explanations as to why warehouse clubs charge membership fees and. how the fees play a role in the competitive landscape of the retail grocery market. We provide. another insight into the nature of the membership fee using a model of price competition. between a warehouse club and a supermarket.
A prescriptive ignition barrier is required within a residential application over the surface of the polyurethane foam insulation when used within accessible attics or crawlspaces. Interior surfaces in inhabited buildings should be covered with a 15 minute thermal barrier for fire protection.
AC 377 Appendix X are not appropriate alternative. thermal barriers and cannot be used. Depending on your particular application, either ignition or thermal barriers are. required by the International Building Code (IBC). DC 315 has been tested and approved on 90 alternative barrier systems.