Abstract: A tough building system and buildings and associated accessories which make such structures more versatile. Support accessories can include a fiber-reinforced polymeric composite support bracket, adapted to be mounted to a top of a foundation wall, and to support an edge of a slab of concrete adjacent the top of the foundation wall, or to support brick fascia, or to support ends of floor joists adjacent an inner surface of said foundation wall. Support accessories can also include a load-bearing, and load distributing support pad, adapted to be used as an interface support/footer between an underlying natural base and an overlying constructed structure. The support pad has a plurality of fiber-reinforced polymeric layers, optionally stacked one on top of the other. The pad has a load bearing capacity of at least 1000 pounds per square foot. The support pad may be a pultruded product.