496 Laboratory

Laboratories include commercial and research and development facilities exclusive of lab equipment. Interiors will have clean surfaces with good enamels, vinyl and glazed tiles and conductive flooring commensurate with the quality level. Costs include laboratory plumbing, electrical and cabinetry, but not fume hoods.

The better qualities are highly ornamented with good offices, testing areas, research and numerous workstations.

Since laboratories have higher requirements for heating, cooling and ventilation, use component 617 (Complete HVAC) for HVAC costs.

Availability of Elevators by Area for this occupancy: Yes

Marshall Valuation Service sections: 14 and 44.

Typical Lives:

					Class
Quality	A	B	C	D	H	M	P	S	W
Low	50	50	45	40	--	--	--	40	--
Average	50	50	45	40	--	--	--	40	--
Good	55	55	50	45	--	--	--	45	--
Excellent	55	55	50	45	--	--	--	45	--

Quality Selection Guide:

Class A (Fireproof Structural Steel Frame): and Class B (Reinforced Concrete Frame):

Quality	Exterior Walls	Interior Finish	Mechanicals	HVAC
Low	Brick, precast concrete, block, little trim	Low-cost finishes, acoustic tile, VCT, plain labs, production and offices	Minimum lab lighting & plumbing, few extras	Complete HVAC.
Average	Brick, concrete or metal panels, formed concrete	Plaster or drywall, acoustic tile, VCT, carpet, good labs and support	Adequate lighting & plumbing, some extra features	Complete HVAC.
Good	Face brick, stone, concrete or metal panels, solar glass	Plaster or drywall, acoustic tile, carpet and vinyl, good testing and research	Good fluorescent fixtures, good lab stations and plumbing	Complete HVAC.
Excellent	Stone, best brick, metal and glass, highly ornamental	Plaster, glazed finishes, enamel, tile, many workstations, support facilities	Best lab plumbing and lighting, many extras	Complete HVAC.

Class C (Masonry Bearing Walls):

Quality	Exterior Walls	Interior Finish	Mechanicals	HVAC
Low	Brick, block, tilt-up panels, bearing walls, wood joists, little trim	Painted walls, acoustic tile or drywall, VCT, plain labs and offices	Minimum lab lighting & plumbing	Complete HVAC.
Average	Steel frame or bearing walls, brick, block, or concrete, some trim	Plaster or drywall, acoustic tile, VCT, adequate labs, support facilities	Adequate lighting, plumbing and workstations	Complete HVAC.
Good	Steel columns, web or bar joists, ornamental block or face brick	Plaster or drywall, acoustic tile, vinyl or carpet, good research & development	Good fluorescent fixtures, lab stations and plumbing	Complete HVAC.
Excellent	Steel frame, face brick, metal panels, tile, highly ornamental	Plaster, glazed finishes, enamel, tile, carpet, vinyl, good support facilities	Best lab stations and plumbing, good lighting and outlets	Complete HVAC.

Class D (Wood or Steel Framed Exterior Walls):

Quality	Exterior Walls	Interior Finish	Mechanicals	HVAC
Low	Wood frame, stucco or siding, little ornamentation	Drywall, acoustic tile, vinyl composition, plain labs, production and offices	Minimum lab lighting & plumbing	Complete HVAC.
Average	Wood frame or pipe columns, good stucco or siding with some trim	Plaster or drywall, acoustic tile, VCT, adequate labs, support facilities	Adequate lighting, plumbing and workstations	Complete HVAC.
Good	Steel or glulam frame and joists, brick veneer, glass, best stucco	Plaster or drywall, acoustic tile, vinyl or carpet, good research & development	Good fluorescent fixtures, lab stations and plumbing	Complete HVAC.
Excellent	Steel or wood frame, brick or stone veneer, metal and glass, ornamental	Plaster, glazed finishes, enamel, tile, carpet, vinyl, good support facilities	Best lab stations and plumbing, good lighting and outlets	Complete HVAC.

Class S (Metal Frame and Walls):

Quality	Exterior Walls	Interior Finish	Mechanicals	HVAC
Low	Pre-engineered, finished interior, insulation	Drywall, acoustic tile, vinyl composition, plain labs, production and offices	Minimum lab lighting and plumbing	Complete HVAC.
Average	Pre-engineered, sandwich panels, some trim	Plaster or drywall, acoustic tile, VCT, adequate labs, support facilities	Adequate lighting, plumbing and workstations	Complete HVAC.
Good	Pre-engineered, good sandwich panels, some brick or stone	Plaster or drywall, acoustic tile, vinyl or carpet, good research & development	Good fluorescent fixtures, lab stations and plumbing	Complete HVAC.