pole retaining wall design guide

Put down a layer of capstone blocks to complete your retaining wall and enhance the overall aesthetic. Angle the hole to allow posts to lean back towards the area being retained at a ratio of 110 so the posts lean 100mm for every 1m of height.


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Retaining Wall Design 10 Editionth A Design Guide for Earth Retaining Structures Contents at a glance.

. When we first started Reon Retaining Walls we set out do more than just supply a product. Two equations are developed in this. Determine wall height and geometry.

For the last two rows of full block apply concrete adhesive to the wall block tops and then set the next row of block in place. The block caps should overhang the retaining blocks by 1 to 1 12 inches. The style of retaining walls can also reflect the landscape setting.

The angle of repose is 30 degrees. Earthquake Seismic Design 7. This information is published by the Ministry of Business Innovation and Employments Chief.

Minimum Safety Factor 20. Cut top end LED of pole only. Width of the base.

If the poles are spaced apart more than 3 4 diameters the. Typically the poles will be spaced relatively close together and the pole foundations should be treated as a continuous strip or bulkhead. 110 Retaining wall design calculations should follow good engineering judgment and or standard design methodologies such as Allan Block NCMA AASHTO or FHWA.

Place a string line. Make sure that the ground behind the wall line is level or slopes toward the end where you want it to drain. A very simple method to design a gravity retaining wall is to use the base width x 2 to calculate the height.

H5 or H6 marine as per retaining wall summary. Design Procedure Overview 3. The backfill is horizontal.

Use this step-by-step worked example 1 to design a cantilever timber pole wall for residential sites. Recon Wall Systems was formed in 2000 and today has more than 60 licensed Recon block producers. Minimize soil excavation and backfill.

Active pressure used for design of timber pole retaining walls and at-rest pressure used for design of concrete block retaining walls. Using construction adhesive secure your capstones and create the top layer of your retaining wall. Building Codes and Retaining Walls 5.

Prior to timber pole strength parameters for newly constructed either end poles below grade of timber pole retaining wall design guide to corrosion or manufacturing problem i need to build a guide. Thats why its often better to have a ³ wall designed by an engineer and built by a properly licensed ³ wall builder to ensure a secure efficient and cost-effective retaining wall solution³ While NSW requires an engineer design for any retaining wall ³ 600mm Brisbane Ipswich and Gold Coast councils generally only require this at 1m or more. Proper retaining wall design requires evaluation of the following.

Dig out a trench that is a minimum of 6 155 mm deep plus 1 for every foot of wall height. Design Overview Guide. The depth of the holes should be equivalent to 70 of the height of the wall.

There are almost twenty-million square feet of Recon retaining walls around the world and we are so proud to. Thickness of the base. The following simplified procedure treats the wall as a continuous bulkhead.

Cantilever timber pole walls are one of the most common forms of retaining wall construction used in New Zealand for low to moderate height applications 10 m to 35 m. Retaining wall Design Design example-1 Design a cantilever retaining wall T type to retain earth for a height of 4m. Allow 68 150200 mm of space behind the wall for 34 clean crushed rock this means your trench is a minimum of 12 or 305 mm wide.

Seismic design of retaining structures for residential sites in greater Christchurch refers to this and three other worked examples. Wall height 1M hole depth 700mm wall height 15M hole depth 105M. The density of soil is 18kNm3.

Typical driven pole foundation construction details Typical retaining wall section with driven poles Typical front elevation. Soil Mechanics Simplified 4. In this example the structural design of the three retaining wall components is performed by hand.

Effective depth 300 40-10-122. Dig 500mm diameter holes every 12M along the line of the wall. Handrail only required if fall height is over one metre.

Fc 3000 psi fy 60 ksi o Development of Structural Design Equations. Brush off the last layer of stones and clean off any debris. Height of the retaining wall.

This guide provides a high level overview of the design process and considerations. Design of retaining walls on boundary for surcharge load. Horizontal reinforcement dia 10 mm.

Forces on Retaining Walls 6. Place poles at an angle of 120 or minimum 3º towards retained ground. Brace and concrete posts.

Characteristic strength of concrete 25. Safe bearing capacity of soil is 200 kNm2. First mark the area of the wall with chalk or spray paint.

Width of the toe. Do not cut SED end of pole. The size of retaining walls can have.

CE 537 Spring 2011 Retaining Wall Design Example 1 8 Design a reinforced concrete retaining wall for the following conditions. Cover to the reinforcement 40 mm. Select the retaining wall location.

Safety Factor 20. Before we proceed with the design it is important for the designer to know the geometric variable and parameters of the retaining wall. We made it our mission to provide SOLUTIONS and ADD VALUE.

Thickness of the wall 300 mm. Minimum Safety Factor 15. Soil Bearing and Stability 8.

A Note from Reon to our Specifiers Engineers Wall Installers and ustomers. -million square feet of Recon retaining walls around the world and we are so proud to be a leader in the big block retaining wall industry. With this idea in mind we carefully engineered and crafted each one of our blocks to serve a specific purpose.

As a rule of thumb this method works and will give a factor of. Stem thickness at the bottom. Assume main bar diameter 12 mm.

Gravity Retaining Walls Gravity retaining walls are a basic design and rely on the mass of the wall to retain the earth behind. Take the co-efficient of friction between concrete and soil as 06. Place small end SED in the ground.

Where a retaining wall is constructed in close proximity to a building or structure the distance from the base of the building to the wall retained area side of the wall shall be equal to or less than the height of the retaining wall measured from the base of the foundation. The wall in figure 1 is 800mm wide and 1600mm high. All methodologies should follow standard minimum design safety factors.

Refer to Figure A2 below. Possible modes of failure for cantilever pole retaining walls. Timber facing materials are used in conjunction with the poles to form an economical wall constructed from sustainable locally processed materials see Figure 1.

Optimize grading and drainage patterns. Retaining doubles as seating terraces to create an amphitheatre for local events. Block retaining wall footing size and key dimensions can be modified if tying the footing with a structural slab.

If your retaining wall is over 1m you will need to angle your posts. Characteristic strength of steel 460 Nmm 2. Roots and big rocks should be removed from the trench.

The use of local materials can enhance the connection to an area. If youre adding block caps apply adhesive to the top row of block before placing the caps. Figure A2-Retaining Wall Geometric Variables.


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