391 Material Storage Building

This weatherproof lumberyard structure is designed for closed storage of such building materials as cement, lime, nails, roofing, etc. The masonry buildings have brick or block with heavy roof framing and windows at the better qualities. Walls are sealed with heavy slabs or plank floors. Electrical systems generally include spark-proof fixtures.

The frame structures are constructed with either wood or steel framed walls. The exterior covers are typically stucco, wood siding or metal siding. Floors at the lower qualities may be unfinished while the better qualities have floors similar to the masonry buildings.

Availability of Elevators by Area for this occupancy: No

Marshall Valuation Service sections: 17 and 47.

Typical Lives:

					Class
Quality	A	B	C	D	H	M	P	S	W
Low	--	--	25	20	--	--	20	20	20
Average	--	--	25	20	--	--	20	20	20
Good	--	--	30	25	--	--	25	25	25
Excellent	--	--	30	25	--	--	25	25	25

Quality Selection Guide:

Class C (Masonry Bearing Walls):

Quality	Exterior Walls	Interior Finish	Mechanicals	HVAC
Average	Block, structural clay tile, light roof structure	Unfinished walls, slab or plank floor	Few open fixtures, no plumbing	None
Good	Brick or block, heavy rafters, barred windows	Sealed walls and heavy slab	Rigid conduit, spark-proof fixtures, no plumbing	None

Class D (Wood or Steel Framed Exterior Walls):

Quality	Exterior Walls	Interior Finish	Mechanicals	HVAC
Average	Wood or cheap stucco, wood frame	Unfinished, concrete or plank floor	Few open fixtures, no plumbing	None
Good	Stucco, wood or metal siding on heavy wood studs	Wainscot, heavy slab or plank floor	Rigid conduit, spark-proof fixtures, no plumbing	None
Very Good	Siding on heavy posts, arch, dome or conical roof	Heavy concrete piers, asphalt floor, salt storage	Good lighting, no plumbing	None

Class P (Pole Frame):

Quality	Exterior Walls	Interior Finish	Mechanicals	HVAC
Average	Metal panels, sheathing on pole frame	Concrete slab, some wainscot	Few open fixtures, no plumbing	None

Class S (Metal Frame and Walls):

Quality	Exterior Walls	Interior Finish	Mechanicals	HVAC
Average	Steel panels, sheathing on steel frame	Sealed concrete slab, some wainscot	Few open fixtures, no plumbing	None
Good	Steel panels, sheathing, on heavy steel studs	Heavy slab, sealed walls	Rigid conduit, spark-proof fixtures, no plumbing	None
Very Good	Siding on heavy steel, arch or dome roof	Heavy concrete piers, asphalt floor, salt storage	Good lighting, no plumbing	None

Class W (Slant Wall):

Quality	Exterior Walls	Interior Finish	Mechanicals	HVAC
Average	Steel panels, sheathing on light steel slant frame	Sealed concrete slab, some wainscot	Few open fixtures, no plumbing	None