Page images
PDF
EPUB
[blocks in formation]

206.011a

206.011b

206.011c

Fee

Pressure calibration of Western Electric Co. Type 640AA condenser
microphone or equivalent from 50 to 10,000 Hz at discrete fre-
quencies. Response given in terms of open-circuit voltage per unit
sound pressure applied to the microphone_

Pressure calibration of Western Electric Co. Type 640AA condenser
microphone or equivalent from 50 to 20,000 Hz at discrete fre-
quencies. Response given in terms of open-circuit voltage per unit
sound pressure applied to the microphone.

Free-field calibration of microphone satisfying the requirements of
the Type-L laboratory microphone specified in American Standards
Association Standard Z24.8-1949; 50 to 15,000 Hz at discrete fre-
quencies; plane of diaphragm either perpendicular or parallel to the
direction of sound propagation. Response given in terms of open-
circuit voltage per unit free-field sound pressure__

(*)

(*)

(*)

206.011d

Calibration of earphones; applied voltage response as prescribed in
the American Standards Association Specification Z24.9-1949, at
not more than 20 frequencies between 100 and 10,000 Hz..

(*)

206.011e

Calibration of pure tone audiometers for screening purposes at nine
fixed frequencies.

(*)

206.011f

Artificial ear at audiometric frequencies.

(*)

See footnote at end of table.

206.011g

Sound absorption coefficient, obtained by reverberation room method,
using 72 ft2 of material at frequencies of 125, 250, 500, 1,000, 2,000,
and 4,000 Hz.

(*)

In case of tests on acoustical plasters or paintability tests, any construction work or painting done by the Bureau is charged to the sponsor in addition to the fee given above.

206.011h

Sound absorption coefficient by impedance tube method at 500 Hz
in the laboratory on acoustical tiles...

(*)

206.011i

Sound transmission loss, wall panel, 71 in. × 88 in. at frequencies of
125, 175, 250, 350, 500, 700, 1,000, 1,500, 2,000, 3,000, and 4,000 Hz.

206.011j

206.011z

The construction of the wall panel is the responsibility of the sponsor of the test.

Sound transmission loss, floor panel, 71 in. X 88 in. at frequencies of
125, 175, 250, 350, 500, 700, 1,000, 1,500, 2,000, 3,000, and 4,000
Hz plus impact sound transmission.

The construction of the floor panel is the responsibility of the sponsor of the test.

For special tests not covered by the above schedule, fees will be
charged dependent upon the nature of the test..

(*)

(*)

*For current fees, see Appendix C.

Engineering Mechanics

206.041 Hardness tests.

Item

206.041a

Description

Determination of Brinell number of a block to be used for calibration
purposes, three separate indentations on each specimen_

Fee

(*)

*For current fees, see Appendix C.

206.042 Calibration of load cells with remote-reading electrical indicators.

(a) These fees apply to calibration of load cells with remote-reading electrical indicators. (b) Individual load cells or load cell systems must be accompanied by readout or indicating equipment and all associated cables and fixtures.

(c) Up to 10 different loads are applied consecutively without return to zero.

(d) For each load in excess of 10, an additional fee equal to one-tenth of the applicable

fee is charged.

(e) When devices submitted are found to be unsuitable for test or unreliable, the test may be discontinued and a charge will be made to cover the cost of the work done.

[blocks in formation]

206.042h

Capacity exceeding 200,000 lb but not exceeding 300,000 lb:
Compression.

(*)

206.042z

For special tests not covered by the above schedule, fees will be
charged dependent upon the nature of the test..

*For current fees, see Appendix C.

206.043 Special mechanical tests of devices, materials, and structures.

(a) These fees apply to all mechanical tests of devices, materials, and structures performed in the Mechanics Division not covered by other fee schedules.

(b) The charge for special mechanical tests is made on the basis of the hours of service furnished by members of the staff.

(c) Where tests require travel outside the limits of 30 miles from the Bureau, transportation and subsistence charges will be added to the service charge.

(d) The time shall be computed as the number of official working hours from the time the members of the staff leave the Bureau until they return to it plus any overtime spent on the tests.

Item

Description

Fee

206.043a

Service of a member of the staff of grade GS-9, or any higher grade,
per hour.

(*)

206.043b

Service of a member of the staff of grades below GS-9, per hour...

(*)

*For current fees, see Appendix C.

(a) These fees apply to calibration of proving rings suitable for use as laboratory or transfer standards.

(b) These fees apply to calibration in accordance with sections I, II, III, and IV of the Appendix of NBS Circular 23 454.

(c) Up to 10 independent loads for compression or tension are applied.

(d) Fees for complete calibrations apply to rings submitted for initial calibration.

(e) For each load in excess of 10, an additional fee equal to one-tenth of the applicable fee for complete calibration or recalibration is charged.

(f) When devices submitted are found to be unsuitable for test or unreliable, a test may be discontinued and a charge will be made to cover the cost of the work done.

23 NBS Circular 454, Proving rings for calibrating testing machines. In NBS Handbook 77, Precision Measurement and Calibration, Vol. II, Heat and Mechanics, p. 573 (see p. 135 for price information and order form).

[blocks in formation]

Recalibration of proving rings, capacity not exceeding 10,000 lb:

[blocks in formation]

Complete calibration of proving rings, capacity exceeding 10,000 lb
but not exceeding 111,000 lb:

[blocks in formation]

Recalibration of proving rings, capacity exceeding 10,000 lb but not
exceeding 111,000 lb:

[blocks in formation]

Complete calibration of proving rings, capacity exceeding 111,000 lb

but not exceeding 200,000 lb:

206.0441

Compression.

See feetmete at end of rade,

Fee

(*)

(*)

(*)

(*)

(*)

(*)

(*)

206.044j

Recalibration of proving rings, capacity exceeding 111,000 lb but not
exceeding 200,000 lb:

Compression

Complete calibration of proving rings, capacity exceeding 200,000 lb
but not exceeding 300,000 lb:

(*)

206.044k

Compression.

(*)

Recalibration of proving rings, capacity exceeding 200,000 lb but not

exceeding 300,000 lb:

206.0441

206.044z

Compression

(*)

For special tests not covered by the above schedule, fees will be
charged dependent upon the nature of the test_-_

*For current fees, see Appendix C.

206.045 Calibration of elastic force measuring devices.

(a) These fees apply to calibration of elastic force measuring devices of a type suitable for use as laboratory or transfer standards.

(b) Before a device is accepted for calibration under this schedule it will be inspected for damage, wear, and operability. Loading surfaces, tension adaptors, and pulling rods must be complete and suitable for use with Bureau equipment. The device must be uniquely and permanently marked with the manufacturers' serial numbers and rated capacities.

(c) A temperature coefficient must be supplied by the submitter of the device.

(d) Devices will be overloaded repeatedly to approximately 10 percent in excess of the manufacturers' rated capacity.

(e) Up to 10 different independent loads for compression or tension will be applied. (f) For each load in excess of 10, an additional fee equal to one-tenth of the applicable fee

is charged.

(g) When devices submitted are found to be unsuitable for test or unreliable, a test may be discontinued and a charge will be made to cover the cost of the work done.

[blocks in formation]
« PreviousContinue »