Retaining Wall Engineering Requirements

If you have your retaining wall built figure about 15 per square face foot for a timber wall 20 for an interlocking block system or poured concrete and 25 for a natural stone wall.

Retaining wall engineering requirements.

1 10 retaining wall design calculations should follow good engineering judgment and or standard design methodologies such as allan block ncma aashto or fhwa. Zoning regulations retaining walls heights are also regulated by the zoning laws of the city as follows. Preparing a troublesome site one that includes clay soil or a natural spring for example can raise costs substantially. Retaining wall terminology.

A wall that leans into the soil it retains is less likely to be pushed outward by soil pressure than a plain old vertical wall. The height of a retaining wall is measured from grade on the lower side of the retaining wall to the top of the retaining wall exposed height e sdmc 113 0270 b 2. Policy on retaining wall design and construction requirements the 2006 north carolina building code includes requirements for the design and construction of retaining walls. How tall is your wall.

Specifically section 1806 2 states. A retaining wall must be built at least 50 metres away from a body of water such as a lake or stream. The height shall be measured from the top of the wall to the bottom of the footer below grade. Most municipalities require a building permit and a design from a licensed engineer if your wall is taller than 4 feet high measured from the bottom of the first block to the top of the last block.

The zone of influence is defined as the area behind the retaining wall to a line rising 45 degrees from the top edge of the footing see drawing below. Retaining walls must be approved by the department of transportation and engineering if the paved roadway falls within the zone of influence for the retaining wall. Retaining wall landscaping cost. We believe civil engineering students can benefit by.

Retaining systems providing a cumulative vertical relief greater than five feet in height within. In this case it is the responsibility of both homeowners to build the retaining wall according to australian standards. Retaining wall requirements. To determine if an engineering plan is needed for your retaining wall project take the time to evaluate the following.

In some cases a retaining wall may be needed instead of a fence between properties. A retaining wall shall not be constructed in excess of four feet in height unless accompanied with a signed and sealed engineering design along with site specific geotechnical analysis. Engineering student who may be using it as a text. It is for both the practicing engineer who has become a bit rusty on this.

All methodologies should follow standard minimum design safety factors.