Understructure

1. Pedestals: Provide manufacturer's standard pedestal assembly including base, column with provisions for height adjustment, and head (cap) made either of steel or aluminum or a combination of both.
1. Base: Square or circular base with not less than 3.5 inch square of bearing area.
2. Provide vibration-proof mechanism for making and holding fine adjustments in height for leveling purposes over a range of not less than 2". Include means of locking leveling mechanism at a selected height, which requires deliberate action to change height setting and prevents vibratory displacement.
3. Construct pedestal adjusting rod of minimum 0.7" solid steel and vertical column of 0.87" square steel tubing minimum. All steel components to be galvanized and precision resistance-welded.
4. Fabricate units of sufficent height to provide required underfloor clearance (as noted below if stringer system required.)
2. Stringer system: Manufacturer's modular steel stringer system designed and fabricated to interlock with pedestal head and to form a grid pattern with members under each edge of each floor panel and with a pedestal under each corner of each floor panel. Protect steel components against corrosion with manufacturer's standard galvanized finish. Provide stringers which support each edge of each full panel where required to meet design load criteria.