Floor Joists Front To Back

The floor joists under the wood floor hold the sub floor in place.

Floor joists front to back. This size is no longer acceptable when framing a structure. In a semi it seems obvious that ground floor suspended floors should have joists running back to front so that most of the air bricks can be at front and back. Floor joists installed on second or third or higher levels double as ceiling joists for the level below. The direction of the joists can either be party wall to party wall or front to back.

Therefore you should consider. In the past 2x4s or 2x6s were sometimes used as floor joists. I suppose there are some general rules about joist layout. You can notch and bore joists without sacrificing critical strength but you must follow the rules.

If you are installing hardwood in the front room of your house you should take into consideration where the front door is located. In buildings with basements the first level of floor joists serves the same purpose. If your home is more than 20 years old your floor joists are most likely solid wood 2x8s 2x10s or 2x12s. Most of the time the standard way to install hardwood in this area is perpendicular to the door.

The joists were trimmed around fireplaces and stair openings as shown in the graphic. On first floors it seems that it might depend on downstairs openings windows and doors. The notching and boring rules of thumb for solid lumber are shown in fig. The correct direction for laying hardwood floors.