Abstract: A guardrail and associated methods preferably having plurality of support posts that are spaced around an area to be defined by rebar or other posts already associated with a construction site are provided. The plurality of support posts preferably support at least one crossbar spanning the length between each of the support posts. The guardrail apparatus also preferably includes a sleeve that slides over an upper portion of each of support posts at the ends of the guardrail which can hold the beams or crossbars of the guardrail. Preferably, the sleeve can be positioned and secured to the post at a desired height. Supports are positioned on the plurality of support posts between the ends of the guardrail at desired heights in order to hold and support the crossbars spanning the length of the guardrail.

Abstract: A weather seal assembly for an air supported roof structure which has a plurality of flexible sheets forming roof panels whose edges are joined together by clamping assemblies comprising pairs of clamping members. The clamping assemblies are sealed by a plurality of cross-shaped sealing strips which are attached to the clamping assemblies and a plurality of flexible membranes each of which is congruent with perimeter of a roof panel. Each clamping member holds one edge of a membrane the opposite edge of which is reversely folded over the clamping member and inserted into a channel in the sealing strip.