Balco trench and access covers provide sub-floor access to utilities for maintenance in hospitals, schools, laboratories and refrigeration sections of supermarkets and warehouses. Trench covers are linear and can run in multiple directions as well as corners, tee conditions and 4 way junctions. Access covers are individual square units for direct access to maintenance valves, joinery and controls.
The most severe live load requirements, excluding manufacturing facilities, per IBC Table 1607.1 are 150 psf uniform and 2000 lbs concentrated (applied to a 2.5’ x 2.5’ area). In order to represent loads applied to more finite expansion joint cover systems Balco, Inc. uses a vertical concentrated load of 300 lbs applied to a 2”-diameter circular area to represent small-wheeled cart traffic and high use pedestrian traffic. Maximum allowable loading deflection 1/8” for pedestrian comfort.
Minimum vertical concentrated wheel load of 3000 lbs acting on a 4.5” x 4.5” area (reflects IBC table 1607.1 note A)
Heavy Duty Loading:
If you have specific load requirements for items like fork lifts, emergency vehicles, tractor trailers and hard wheeled industrial machines we require some basic information in order to make a specific product recommendation.
Load Information needed:
- Joint size
- Building type (ie. Hospital, Convention Center etc.) Equipment load specification
- Floor finish infill in the product.
Testing standards ASTM-E1399, ASTM-E1966 and UL2079 all have the same requirements regarding the performance of movement joints. Reference Table 1, an excerpt from ASTM –E1399 documents. One cycle is the range of motion from an expansion joint nominal position to the fully expanded position to the fully compressed position and returning to the nominal positon. CPM means Cycles Per Minute.
|CLASS||Movement||Min. Cycles||Cycle Rates|
|II||Wind Sway||500||10 cpm|
BIM objects will be downloaded in all of the following formats.
RFA- Revit Object | RVT- Revit System | DWG and DXF- AutoCAD, Sketchup, | DGN- Bentley