Item Brochure

Turf-Tec International
1471 Capital Circle NW, Ste # 13
Tallahassee, FL. 32303 USA
Order Line [phone] - Phone [phone] - Fax [phone]
Website: www.turf-tec.com
For engineering use
It should be noted that OSHA requirements applicable to excavation work, but not
contained in the excavation standard, also have been included in this worksheet.
Information on the different types of soil manual field tests is contained in Appendix A of
29 CFR 1926.652 and should be read prior to attempting. If soil field classification will
be performed, a pocket penetrometer should be purchased for use in determining the
unconfined compressive strength.
A copy of the standard " Soil Classification - 1926 Subpart P App A" should be
reviewed at the U.S. Department of Labor Occupational Safety & Health Administrations
website at www.osha.gov
Unconfined Compressive Strength (Ref. 3.1)
Instructions:
1. Within five minutes after a sample of broken soil is exposed to the open air,
remove one or more of the largest clumps and analyze it with a pocket
penetrometer.
2. Slice each clump with a spatula to provide a smooth surface for analysis.
3. Press the penetrometer cylinder against the sample and compress the soil and the
calibrated spring of the instrument to the marked ring on the cylinder.
4. Read the position of the ring on the calibrated scale of the cylinder.
5. Record the unconfined compressive strength reading in tons per square foot (tsf)
or kilograms per square centimeter (kg/cm2).
6. Report the average of at least three readings if possible.
7. Note all samples that break apart and do not provide a positive analysis.
References
3.1 Code of Federal Regulations, Title 29, Part 1926, Subpart P, 1999, pp. 372-409. U.S.
Government Printing Office, Washington, D.C. 20402-9328