The engine was rated for 168 psi using a 2-rivet lap seam
formula, a reference pertaining to original boiler construction.
Had our founders not stood their ground we might still be building Lap seam
Tenders are invited for furnish labor, materials, and equipment to prepare and apply spray foam to seal along lap seams
of metal roof r-panels and around all penetrations on 2-metal roofs.
Flanging was required to form the various shapes necessary for the riveted lap seams
used in circumferential seams and firebox seams.