1 when deck blocks are a good idea.

Deck block spacing. Ideal deck post spacing is 8 feet or less. The normal spacing for deck joists is 16 inches on center. 1.1 deck blocks are better for decks around tree roots.

The distance between deck support posts depends on the type of wood species used and the size of the joist and beam. Because traditional wood primarily expands along. Depending on the size of the deck itself, whether your joists are spaced either 12 inches or 16 inches from the center, and the framing materials and size of deck boards used, deck joist.

For example, if the deck is 12′ (3.6m) deep, the deck blocks can be spaced no more. Read on to find the. This is 144 square inches.

To make a better bond between the concrete and the block, wet the block. The longer the joists’ span or the deck’s depth, the closer the deck blocks need to be. The span of the joists the beam is supporting also determines the maximum deck beam span between support posts.

There is no minimum span,. While this means that the joist blocking spacing could be further apart (up to 4 feet),. Use a trowel to fill the hole and slots in the deck block with concrete.

Chart of deck area and estimated tuffblocks. Before you build a deck, verify this with your local building department and read the installation instructions for the decking material. In fact, a 2x6 steel joist will provide the strength of roughly a 2x10 wood joist when it comes to allowable.