Viruses are classified by the type of nucleic acid they contain, and the shape of their protein capsule. Examples of several viruses are shown in Figures 1-3. Figure 1. Structure of a variety of viruses. Image from http://www.gene.com/AE/AB/GG/examples_of_viruses.html.
Stucco is a durable and beautiful building material, but homeowners should accept that it just isnât waterproof. If youâre concerned about damage to your home, look from these signs that your stucco is, indeed, due for a waterproofing job: Paint coating stucco is chipping, peeling, fainting, or cracking.
FOUNDATION WEEP SCREED (NO. 7) This bead is now required by most building codes and by ASTM C1063 on all framed walls as part of a drainage system for exterior stucco applications. The 3Â½ inch nailing flange serves as a flashing when water resistant breathable building paper or paper backed lath is installed over the flange.