A permit is not required, however all retaining walls must be no higher than 6 feet and must be a minimum of 3 feet from the property line. Walls that are designed as a fence or barrier require a permit.

Since you will likely be changing the grading of the land by installing a retaining wall, you will have to file a Grading and Clearing Permit application. This Application is available from the Engineering Division and has a fee of $50 per acre (the minimum fee is $50). The retaining wall location and size will have to be shown on the application documents.

All EP Henry Retaining Wall products can be used to build steps. The wall units are used for the riser and the caps for the treads (Bullnose Pavers can also be used for treads). Make sure you pay attention to local codes that dictate the minimum step height, tread depth and hand rail requirements.

The Seattle Residential Code (SRC) Sec R105.2 (pg. 4) allows you to build a retaining or rockery wall up to 4’ high, measured from depth of footing, without a building permit. However, other code requirements and development standards may impact your project to the point where a permit is still required. You can contact a permit specialist by phone (see here for phone number and hours), or visit the Applicant Services Center.

A permit is required when the wall is over 4-feet high including the footing depth. For more information on fence permit requirements, Fence & Wall Permit Requirements. You may also contact the Permit Specialist.

We have 4" Windsor and Border Stone block for borders and garden walls. We have 6" Diamond block for residential landscape walls. We have 8" Vertica Pro, Vertica and Diamond Pro for large commercial walls. Anchor Wall

You should consider installing retaining walls for erosion prevention. They are also used for the beautification of an area.

Yes, permits are required in all wilderness areas, National Parks, and other restricted areas along the trail. You can obtain a permit from the agency on which your PCT trip originates. For example, if you plan to travel from Echo Lake to Castle Crags State Park, you would need to contact the Eldorado National Forest since your trip would begin in that forest. They would issue a permit good for your entire trip. The PCTA can issue a wilderness permit for trips of 500 miles or more along the PCT.

Figure #4) There is a reason why cracks appear in concrete foundation walls or retaining walls. You may have a problem developing. Sometimes these cracks don’t worsen and sometimes they happen so slowly you don’t notice the subtle progressive change. It is best to have this problem looked at and monitored by an experienced structural contractor and a professional structural engineer.

Many Unilock retaining walls can be used for this application. Whenever building a retaining wall 39' (1 meter) you should consult a professional enginer.

Some typical signs of landslide danger are listed in the pamphlet "How to protect yourself and your family when the landslip warning is in force." or from the Hong Kong Slope Safety Website

NCMA and ASTM require that the blocks obtain a minimum of 3000 psi. Compressive strength tests, done on a regular basis, on the GeoStone module have always exceeded 4000 psi.

TrueGreen Sports, utilizing the services of one of the area's most respected landscape companies, Providence Lawn and Landscape of Manassas, is able to provide you with any landscaping design and installation service your project might require, including natural stone retaining walls, ponds, patios, waterfalls, and all varieties of plantings.

A Grading permit is required when the clearing involved to place the wall or fence exceeds one of the following : Grading which requires a permanent cut or fill slope greater than 5 feet in height and steeper than 3:1 slope.

Avalon Pools can handle all your retaining wall needs. From interlocking block to brick or stone-faced cinder block; from stacked stone to landscape timbers.

Most hunts in Alaska are open to anyone with the proper license and harvest ticket, or locking tag in the case of nonresidents. However, where hunter demand is greater than a game population can sustain, hunting is allowed by permit only. Three types of permits are used: drawing, registration and Tier II. Applications for Tier II permits and most drawing permits are accepted only during May.

The Granite Chief Wilderness is one of the few wilderness areas where a permit is not required for entry or camping. Wilderness permits are tools for limiting use to reduce human impacts. At this time, the wilderness management plan for Granite Chief does not require a permit program. A campfire permit is required for fires, bar-b-ques, or gas stoves anywhere on National Forest lands.