Compacting backfill material in 8" to 12" (200mm-300mm) lifts allows you to effectively compact the entire area behind the wall without putting unnecessary pressure on the units. Thick lifts of soil require more compaction effort and create a greater force at the back of the wall which may cause potential alignment and rotation problems. Consult with a geotechnical engineer for further compaction criteria based on specific site soil.

Weekly compaction is recommended. When the database is compacted it is also repaired. Tools -> Database Utilities -> Compact Database

North Carolina soils become quite acid because the warm, humid climate leaches basic cations from the soil. Acid rainfall can also cause soils to become acidic. The basic cations—calcium (Ca++), potassium (K+) and magnesium (Mg++)—are leached from the soil profile and replaced with acidic components (H+ and Al+++) that are toxic to plant roots. The toxic components are neutralized by lime.

No prior experience is needed to attend the Soils course. It is basically an introductory level course, but discussions often get more advanced depending on the participants involved.

Yes. Irrigation water that is suitable for one soil may not be for another. Use of saline and/or sodic water for irrigation can be risky business on soils predominated by silt or clay. Just 1 acre-foot of moderately saline irrigation water (EC = 3 dS/m - the upper end of suitability for irrigation water) will introduce 1.8 tons of salt to an acre of land. Soluble salts do not leach as readily through fine textured soils as through sandy soils.

Colorado is a rather unique area of the U.S. in that its geologic composition causes soils to expand. This can make it difficult to build homes in some areas of Colorado. Colorado builders sometimes use special foundations called structural wood sub-floors to counter the effects of expansive soils. However, these structural wood sub-floors can trap water or water vapor and allow mold to grow.

We can plow through soil with isolated rocks the size of phone books without a problem, however, there needs to be enough soil to hold the stakes.

American Society for Testing and Materials (ASTM) D-2487. This is commonly called the Unified Soil Classification System. Particle size, fraction passing the No. 200 sieve (0.074 mm), and plasticity characteristics are the chief characteristics used to classify soils. The AASHTO Classified System groups the soils into seven basic groups, designation A-1 to A-7, with subgroups in some of the groupings.

Compact Storage is a separate area with arbitrarily assigned call numbers designed to store the largest amount of books in the smallest possible space. It is used primarily to store infrequently used material or to protect vulnerable material from unnecessary handling. Both the Holland and Terrell Libraries and the Owen Science and Engineering Library have Compact Storage areas. Contact the appropriate Circulation desk for help in accessing materials from these collections.

For data on trace metals in soils see USGS Professional Paper 1270; for other soils data contact the Natural Resources Conservation Service at: State Conservationist 1 Credit Union Place, Suite 340 Harrisburg, PA 17110 (Tel: 717-237-2200) A list of published soil surveys is available on the WWW at http://soils.usda.gov/survey/printed_surveys/. A list of on-line soil surveys is available on the WWW at http://soils.usda.gov/survey/online_surveys/

Yes. ASTM D 2321 is the required pipe installation specification. Within the R/W there are additional requirements for compaction of the trench backfill material above the pipe.

Yes, you must install FieldPoint Explorer version 3.0.2 or higher. FieldPoint Explorer 3.0.2 also provides: Optimized LabVIEW 6.1 palette for embedded LabVIEW Real-Time FieldPoint systems. The new LabVIEW functions are faster, use memory more efficiently, and take up less disk space

Yes, all programs for Pocket PC developed by Sly2Soft require the .NET Compact Framework installed on your device. If you are using a device running Windows Mobile 2003 or higher it is already preinstalled on your device's ROM by manufacturer so that you don't have to install it. However, if you are using a device running Windows Pocket PC 2000 or Windows Pocket PC 2002 you do have to install the .NET Compact Framework.

If you are using Windows SmartPhone 2003 or higher you don't have to install .NET Compact Framework, it is already preinstalled on your device's ROM by manufacturer. If you have Windows SmartPhone 2002 you will not be able to run software from Sly2Soft since .NET Compact Framework cannot be installed on this device.

The heat pump is sized to meet the full space heating losses from your building - no larger, and no smaller. The better insulated your house, the smaller the Heat Pump you will require - and the less money it will cost. There are a range of sizes available - see our online price list. We would recommend that you ask your building service professional (builder, architect etc.

While they're more expensive and still considerably larger than point & shoot cameras, digital SLRs offer more control over the picture-taking process including extensive exposure adjustment, quicker shutter response time with virtually no lag, and the benefits of detachable lenses. Most importantly, digital SLRs are the camera of choice for serious photographers because they allow for more flexibility and creativity while offering generally superior picture quality.

Tile drainage has been practiced on many soil textures. Sandier soils can be drained with deeper, widely-spaced tile, but tend to need sock filters to prevent soil particles from entering the tile soils with a higher clay content can also be drained but require tile to be placed shallower and closer together.

Organic Clay Breaker is a product specifically designed to condition heavy clay soils. This product is a combination of composts and mineral components, which assist in breaking down the clay and improving the drainage of the soil.

Sandy soil drains too freely and requires the addition of well-composted organic matter to help hold moisture in the soil. The type of conditioner used will depend upon the type of plants being planted afterwards. Native plants will prefer Greenlife 'Mulch & Compost' , and for exotic plants we recommend using Botany Humus .

UL specializes in clean water matrices and we do not perform analysis on wastewater, soils, etc. Please email us or call +1-800-332-4345 for assistance in helping you find a laboratory that specializes in those analyses.

Heavy clay soils hold too much water for most plants, and this leads to root rot and poor plant growth. Organic Clay Breaker® is a product specifically designed to condition heavy clay soils. This product is a combination of composts and mineral components, which assist in breaking down the clay and improving the drainage of the soil.

Sandy soil is too free draining and requires the addition of well-composted organic matter to help hold moisture in the soil. The type of soil conditioner used will depend upon the type of plants being planted afterwards. In the case of Native plants sensitive to Phosphorus, they will prefer Greenlife ‘Mulch & Compost’®, and for exotic plants we recommend using Botany Humus®.

Experience has shown that lime will react with medium, moderately fine and fine grained soils. Generally speaking, those soils classified by the Unified System as CH, CL, MH, SM, GC, SW-SC, SP-SC, SM-SC, GP-GC or GM-GC are potentially capable of being stabilized with lime. The extent to which the soil-lime pozzolanic reaction proceeds is influenced primarily by the natural soil properties.

No, there is a very small portion that drain or leeches out of the soil, less than the addition through precipitated air pollution. It is really important to realize how impossible (by any biological, chemical or mechanical method known today) it is to get heavy metals out of the soil once it is there i any significant concentration. This places the farm land in a unique and crucial situation -- if it is allowed to deteriorate or become poisoned, there is no return, no reversal.

Some companies are making safer products today and striving to make even safer products in the future.  More than 600 companies have signed the Compact for Safe Cosmetics, a pledge to remove hazardous chemicals and replace them with safe alternatives within three years.  Click here for the most recent list of Compact signers. Arbonne, Avon, Mary Kay and Melaleuca are aware of the Compact for Safe Cosmetics but have refused to sign it.

This is a policy that concerns all students who are transferring from a Mass. Community College to a four-year state college or university with an Associate of Arts or Associate of Science transfer degree.

This is a law with which we must comply! Since a child cannot legally cross state lines with any person other than a parent or guardian, we obtain permission from the sending state for the child to leave, and from the receiving state (the adoptive parents’ state of residence) for the child to enter. The Interstate Compact laws are administered differently in each state.

The Compact is governed by the IIPRC, which includes one Member from each Compacting State. The Management Committee of 14 Members directs the activities of the IIPRC.

The Compact will be financed by IIPRC filing fees paid by insurers. The Compact authorizes the IIPRC to accept any and all appropriate donations and grants of money. In March 2006, the NAIC provided a contribution to the IIPRC in the amount of $500,000 to help cover its start-up activities. There will be no fiscal impact on states joining the compact as the IIPRC will collect and remit state filing fees.