S ec t i o n 1 3 -P a g e5 May 2013 FastJax • 12" Adjustable T ops • 100 To n Y ield Str ength • A vailable in 6" incr ements fr om 4' to 9' high • Can be fitted with yieldable dish, yolk to suit box beam or flat plate top • No loose pieces or gr out bags RBS Posts • 6" or 9" Adjustable T ops • 90 To n Y ield Element • 10 To n Setting Load • Diameters available fr om 6" to 10" • Pine Posts • No loose pieces or gr out bags Adjustable Support Jacks 0 1 2 3 4 5 6 7 8 DISPLACEMENT , inches SUPPORT LOAD, klps www .dsiundergr ound.com