ASTM F1554 grade 55 anchor bolts are manufactured from a modified mild steel that has a higher minimum yield strength (55 ksi) than traditional A36 mild steel (36 ksi). This specification was widely used in the Towers, light pole and traffic signal industry long before the ASTM F1554 specification was introduced in 1994 and was commonly referred to as A36M55. Just as with grade 36, grade 55 covers anchor bolts in diameters ranging from 1/4″ through 4″.
ASTM F1554 anchor bolts can be straight rods (either fully threaded or threaded on each end), bent anchor bolts, or headed bolts.
All ROHN Tower Installations should be temporarily Guyed during Erection or Take-Down.
5/8 X12BB J Bolt 15/8" x 12" inch for ROHN BPH45G and 25GSSB Base Plate
3 Star Inc
The 5/8X12BB Base Bolt is for embedment inclusion during the Concrete Pier Pad Pouring Process that precedes the mounting of a ROHN BPH45G Hinged Base Plate for 45G Guyed or Bracketed Tower that is pre-drilled to mount upon (6) Six of these and the ROHN 25GSSB Self-Supporting Base Plate for 25G Self-Supporting Tower which uses Four (4) of these 5/8 x 12 inch J-bolts (Seek Engineering notes in Spec. Sheets) with a space in between the finished slightly crowned concrete and the Bottom of the Base Plate for Drainage.(Seek Engineering notes in Spec. Sheets) Make a template for pouring Concrete while suspending these J-bolts during the pouring process.(One Bolt per Order)
Assure that the Down Guys or Wall Brackets match the direction of the Hinged Plate Travel Path.
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