Precast concrete deck blocks are popular for building decks. Some are made with notches designed to hold standard-sized posts, beams and joists. However, concrete deck blocks can be used without restriction for a freestanding deck that’s not attached to your house.
Can you build a deck on pier blocks?
Pier blocks make it easy to create a freestanding deck that is not connected to the home. The average do-it-yourself homeowner with minimal carpentry skills can easily create a good-looking, functional deck in a day’s work.
How far should deck blocks be apart?
Space the deck blocks at 4′ to 6′ intervals to offer the frame good support.
How much space should be between deck blocks?
Set the four corners for the deck. Digging about 6 inches into the ground, create holes for the blocks so you can adjust (raise or lower) to make them even. The blocks should be spaced to make a 7′ x 19′ rectangle, leaving about 6 inches from each block for deck boards to add another 8′ x 20′ rectangle.
How far apart do concrete deck blocks need to be?
The longer the joists’ span or the deck’s depth, the closer the deck blocks need to be. For example, if the deck is 12′ (3.6m) deep, the deck blocks can be spaced no more than 6′ (1.8m) apart….How Much Deck Can A Deck Block Hold?
| Feet Between Deck Blocks | Max Joist Length/ Depth of Deck |
|---|---|
| 5 | 16’0″ |
| 6 | 13’3″ |
| 7 | 11’5″ |
| 8 | 10’0″ |
Do I need gravel under deck blocks?
Gravel sitting under the deck block allows quick drainage, not damming the water preventing it from being absorbed by the ground under the deck block. Also, gravel is the most stable material with great bearing capacities. A deck block with compacted gravel under it will support more weight than the other two options.
