When a new tax law is passed, the Committee Report is printed in the IRSâ weekly Internal Revenue Bulletin. The weekly IRS reports are reorganized and published every 6 months in the Cumulative Bulletin.8.4.1 Pronouncements by the IRS 18.4.2 IRS Acquiescence and Nonacquiescence 18.4.3 Internal Revenue Bulletin 18.4.4 Bulletin Index-Digest System 18.4.1 Pronouncements by the IRS There are generally six types of pronouncements: 1. Regulations, 2.
OSB (Oriented Strand Board) is an engineered wood-based panel consisting of strands of wood which are bonded together with a synthetic resin; the strands are pressed together in layers.
As OSB is cheaper than plywood and has the strength and durability of plywood it is becoming more widely used than plywood. OSB was introduced in the 1970s and steadily gained market share from plywood, surpassing plywood in production in 2000.Today OSB has 70-75% market share and plywood has about 25% share.SB is cheaper than plywood by about $3 to $5 per panel. For a typical 2,400 sq. ft. home, OSB is about $700 less expensive compared with plywood if used as the subfloor, sheathing, and roof decking. Both plywood and OSB are used for sheathing roofs, walls and subfloors.