Pier blocks can be used instead of footings for a ground-level deck not requiring permits. Piers blocks can also be used if the frost level depth is less then the height of the pier block.

How much weight can a pier block hold?

A single 8” x 16” concrete block can carry 8,000 lbs. Don’t go over 36′′ high. The single blocks that can be used for your pier can easily carry 5,500 lbs. They limit a dry stack, single block pier to 5,760 lbs.

Do deck blocks sink?

The deck blocks can sink if the soil under them erodes for some reason or the weight is unevenly distributed. That’s why it’s a good idea to use more than less.

How far apart should pier blocks be for a deck?

Space the deck blocks at 4′ to 6′ intervals to offer the frame good support.

How deep do concrete piers need to be?

If your home’s foundation is in need of help, concrete piers are an extremely effective method of foundation repair for homes with damaged or sagging foundations. A hole approximately one foot in diameter is drilled to a depth of anywhere from 12 to 20 feet underneath your home.

Do I need rebar in sonotube?

We usually recommend that a minimum of two pieces of #4 rebar be placed vertically in an 8-inch-diameter concrete pier supporting a structure. A larger-diameter pier should have four or more pieces of vertical rebar.

Can I build a deck directly on the ground?

Yes, you can build a deck directly on the ground, but with some conditions. A deck on the ground must be built with ground-contact wood, and the substructure needs to be adapted for minimal height. Even though technically a ground level deck is elevated up to 24”, here we will discuss decks built less than 8” high.

What do you put under deck blocks?

Sand or gravel under the blocks works best because these materials don’t change with seasonal freeze-and-thaw cycles. They allow water to seep away in the fall, eliminating frost-related heaving in the winter. Heavy clay soils, on the other hand, can rise and fall substantially because they hold so much moisture.

Can you put a shed on concrete blocks?

Concrete shed foundation blocks are a great way to create a level base for your shed. They can be doubled up to give a wide base, or stacked to build piers for higher clearance or uneven slopes. Concrete blocks are ideal for flat or on-grade foundation support. They raise your structure off the ground and won’t rot.

Do deck blocks need to be buried?

Simply placing them on the ground or on a poured concrete pad a few inches deep usually isn’t enough to comply with codes — they must be set at least 12 inches deep in undisturbed soil. However, concrete deck blocks can be used without restriction for a freestanding deck that’s not attached to your house.

Are deck blocks a good idea?

Deck blocks are a good idea for low decks, decks around trees, areas with low frost levels and economical decks. It is a bad idea to use deck blocks when attaching the deck to the house, on stable ground or supporting elevated decks, pergolas or a roof.

Can I build a deck without digging holes?

Yes. It’s possible to build a deck without digging holes. This type of deck is called a floating deck, and it sits right on top of the ground without any posts or support areas that you’d dig down into the ground [to secure].