tiered retaining wall setback requirements

Building a Retaining Wall: 8 Dos and Don'ts - Bob Vila

When building a tiered set of retaining walls, position the higher wall behind the lower wall at twice the distance as the height of the lower wall. For example, if the lower wall is three-feet.

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418 SETBACKS 418-1 Obstruction in Required Yards

418-4.4 Tiered retaining wall structures not exceeding seven (7) feet in height in any required yard. The maximum height measurement includes all tiers located within the yard or setback area. All non-tiered retaining walls located within the yard or setback area shall not exceed a combined total of seven (7) feet in height.

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§ 22.20.090. Setback Requirements and Exceptions., Chapter 22 .

Retaining walls that comply with the height limits specified in Section 22.20.052 (Retaining Walls); 4. Detached energy efficiency devices located within required rear yard and side yards that do not exceed a height of four feet in height above grade; 5.

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Tiered Retaining Walls

A retaining wall engineer can design the Seven Trustr Wall for the surcharge load applied by the Upper Wall. In the NCMA* Design Manual (2010, Third Ed.) use Figure 5-6, “Surcharge Approximation for Tiered Walls”.Question: Can I have a single wall that “splits” apart, with the bottom half curving away from the top half?

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SEGMENTAL RETAINING WALL GLOBAL STABILITY - NCMA

Global stability must be checked for all tiered walls. Figure 7 shows the variation in the global factor of safety for two 10-ft (3.05-m) high tiered walls with horizontal crest slopes as a function of the setback J. In this example, the reinforcement length for both walls is 12 ft (3.66 m), which is 0.6 times the combined height of both walls.

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Design Guidelines for Multi-Tiered MSE Walls

Administration. Project Title: Design Methodology for Tiered MSE or Concrete Block Retaining Walls. 16. Abstract TxDOT is experiencing wider use of multi-tiered MSE and Concrete Block retaining walls. These walls often involve loads and geometric configurations that are different from the ones for which current FHWA

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Setback Chart for Retaining Walls - Allan Block

Setback Chart for Retaining Walls. Allan Block retaining wall blocks come in a variety of setbacks. Note: retaining walls designed with a 12° setback need more space than a 6° retaining wall but will be stronger and more stable.

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Setback Chart for Retaining Walls - Allan Block

Setback Chart for Retaining Walls Allan Block retaining wall blocks come in a variety of setbacks. Note: retaining walls designed with a 12° setback need more space than a 6° retaining wall but will be stronger and more stable.

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Setbacks - Residential

Retaining walls No setback required Landscaping elements (including ponds) No setback required Decks 18 inches or taller are considered an extension of the building wall and must meet all setback requirements. Historic Lot Exceptions If there is already a house on the property, which was legally built using smaller setbacks than are required

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Design Manual 730 Retaining Walls and Steep Reinforced Slopes

Retaining walls and slopes can have a pleasing appearance that is compatible with the surrounding terrain and other structures in the vicinity. To the extent possible within functional requirements and cost-effectiveness criteria, this aesthetic goal is to be met for all visible retaining walls and reinforced slopes.

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418 SETBACKS - washtech.co.washington.or.us

All non­tiered retaining walls located within the yard or setback area shall not exceed a combined total of seven (7) feet in height. 418­4.5 All retaining wall structures, exceeding seven (7) feet in height, not within a required

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Tiered Walls - VERSA-LOK Retaining Wall Systems

for tiered walls cannot be estimated using standard design charts, and tiers are more complicated to engineer. Even short tiered walls (less than 4 feet high) may require geogrid and engineering. If the setback between tiered walls is at least twice the height of the underlying wall, with level grades between walls, each tiered wall can be .

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Retaining Wall Code for California for Oakland and San Francisco

Tiered Retaining Walls. Use of tiered walls is a special condition where two or more short walls, horizontally offset from one another, are used in lieu of a single tall retaining wall. When tiered walls are not properly offset from each other, the upper wall may impose a surcharge condition on the lower wall.

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ENG-012 Retaining Wall Engineering Requirements

TIERED RETAINING WALL – A combination of two or more retaining walls in a parallel step design for which the spacing of any two tiers is less than two (2) times the height of the lower tier. The exposed height of a tiered wall is measured vertically from the lowest point of the finished final grade to the top of the upper-most retaining wall.

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