# What Size Landscape Block Is Needed For 8 Foot Wall?

A: To construct a block wall, you need to establish a solid footing that is a minimum of twice the width of the concrete block. For example, a typical 8x8x16-in. block would require a 16-in. wide footing and extend below the frost line. Always check local building codes for construction requirements in your area.

## How NOT to Build a retaining wall. RED FLAGS, common mistakes, bad designs pt1

### What size retaining wall blocks do I need?

For heavy-duty walls up to 30 ft. tall, go with full-size blocks. They're 16 to 18 in. long x 6 to 8 in.

### How do you build a 8 foot block wall?

1:273:10How to Build A Concrete Block Wall - YouTubeYouTubeStart of suggested clipEnd of suggested clipSet an 8 by 8 by 8 half block into the mortar bed with a smooth side facing out this process willMoreSet an 8 by 8 by 8 half block into the mortar bed with a smooth side facing out this process will create a very strong running bond pattern that ties the wall. Together.

### How do you calculate wall blocks?

After you have found the square footage of both your wall and your block, determining the number of blocks you need is as simple as dividing the wall square footage by the block square footage. If you're using a standard 16″ x 8″ x 8″ block, find the number of blocks needed by dividing the wall square footage by 0.89.

### Which blocks to use for a retaining wall?

Concrete blocks can be used by laying them side by side, again with mesh ties holding the two sections together, or by laying them flat to give either a 225mm wide wall, or long ways to give a 450mm wide wall. There are also proprietary products for building strong walls and one of these is the hollow concrete block.

### How big of a trench do I need for retaining wall?

When digging your trench, the bottom row of blocks should be buried about 1 inch for every 8 inches of wall height. This provides the strength and stability of your retaining wall. Followed by this, you should make sure that your trench is level and compacted.

### How big do you need to build a concrete wall?

Let’s say that I wanted to build a wall using concrete blocks measuring 16 inches in length and 8 inches high with a mortar gap of half an inch. We want the wall to be 15 feet high and 30 feet in length. I want to know how many concrete blocks will be required, and an estimate for the cost of the masonry project.