complete workload formula, 1b

[Fred Sturm]

Condition
(1.3) - Excellent: Piano needs regular maintenance - regulation, tuning
and voicing.
(1.0) - Good: Piano needs some minor reconditioning - hammer filing, key
bushing, minor action pinning, regulation, tuning, voicing.
(0.8) - Good/Fair: Piano needs major reconditioning - hammer
replacement, major action repinning, key re-bushing, regulation, tuning,
voicing.
(0.6) - Fair: Piano needs partial rebuilding - new hammers and other
action parts, restringing with existing pinblock, regulation, tuning and
voicing.
(0.4) - Fair/Poor: Piano needs major rebuilding - new pin block,
soundboard repair, new strings, tuning pins, action parts, regulation,
tuning and voicing.
(0.2) - Poor: Piano needs complete rebuild/remanufacture - new
soundboard and bridges, pin block, new strings, tuning pins, action
parts, regulation, tuning and voicing.
[Note: Categories Fair through Poor should only be applied to pianos
that will receive the described level of work.]

Rebuilding Parameters
(0.4) Piano will receive complete rebuilding/remanufacturing, including
new soundboard and bridges, and possibly new keyboard.
(0.6) Piano will receive major rebuilding, including soundboard repair
and new pinblock.
(0.8) Piano will receive minor rebuilding, including restring with
original pinblock, complete action parts replacement.
(1.0) Piano will receive major reconditioning, including new hammers and
possibly shanks/butts, major repinning.
(1.2) Piano will receive minor reconditioning, filing hammers, rebushing
keys, regulation.
[Note:  Each category represents the maximum rebuilding/reconditioning
care the individual piano will receive. These parameters are expected to
apply over the life of the piano, and to apply to work done at the
institution.]

Climate Control
1.4 - Excellent: 5% maximum variance in relative humidity (generally
achievable only with complete humidity control unit installed and
well-maintained, with back covers on uprights, string and bottom covers
on grands; and with ambiant humidity within 20%)
1.2 - Very good: 10% maximum variance in relative humidity (or has
complete humidity control unit installed and well-maintained, with back
covers on uprights, string and bottom covers on grands)
1.0 - Good: 25% maximum variance in relative humidity (or has complete
humidity control unit installed and well-maintained)
0.8 - Fair: 40% maximum variance in relative humidity
0.6 - Poor: 60% maximum variance in relative humidity
0.4 - Very Poor: variance in excess of 60%
[Notes with respect to piano installed humidity control systems:
1) It is likely that a complete system without back/bottom/string covers
can bring a piano into the “Very good” category if the variance in the
building is no more than 30%. Some discretion should be used in
assigning categories.
2) "Half systems" (a humidistat with a dehumidifying unit) can help in
situations where ambiant humidity rises above 50% on a regular seasonal
basis. In general, such a system might improve tuning stability by one
step. Complete systems are strongly recommended wherever possible under
most conditions where humidity varies more than 15%.
3) There is a certain amount of maintenance time involved for complete
systems. Most of this maintenance is unskilled, and can be accomplished
by, say, a work study student, thereby freeing up technician time.
4) Systems must have the appropriate wattage and position of components,
as recommended by the manufacturer, to produce the predicted level of
effectiveness.