# How far apart are floor joists in a house?

Normally, floor joists are spaced

**16 inches**apart on center. This means from the center of one upright joist to the center of the next. Given that 2x8s are actually 1-¾ inches wide, it works out to be 14-¼ inches between each joist. With some structures, floor joists are required to be 12 or 24 inches apart on center.A.

### How far can floor joists span?

In general terms, joists spaced 16 inches on center can span 1.5 times in feet their depth in inches. A 2x8 up to 12 feet; 2x10 to 15 feet and 2x12 to

**18 feet**. The larger the deck, the larger the joists.#### What is the standard distance between ceiling joists?

**Ceiling joists**are usually installed either 16 or 24 inches on center, which means roughly 16 or 24 inches apart. Once you've located the first one, the others are easier to find.#### What does it mean to sister a joist?

**Sistering joists**means beefing them up with additional material. Doing so strengthens weak**joists**and can help straighten sagging**joists**. Framing lumber is the typical choice for**sistering**material, but engineered lumber products actually add more stiffness than dimensional lumber.#### How far apart are posts on a deck?

Starting with your perimeter, mark the location of each deck post to locate the fitting position. In general, posts should be spaced no more than**8 feet**apart. Some builders position them every**4 feet**for a completely rigid frame. The maximum distance between footings is determined by the size of your joist material.

B.

### What size floor joist to span 14 feet?

Max. Live Load 30 lbs/ft2 (1436 N/m2)

Maximum Span (ft - in) | ||
---|---|---|

Nominal Size (inches) | Joist Spacing Center to Center (inches) | Lumber Grade |

2 x 8 | 12 | 15' - 10" |

16 | 14' - 5" | |

24 | 12' - 4" |

#### What is a Bandboard?

The**band**joist and sill plate are the set of**boards**(in wood frame houses), or blocks (in a brick house) that sit on top of the foundation wall and run in a**band**around the house.#### What are the components of a deck?

**The following terms define all of the important components of a typical deck.**- Beams or girders: Hefty framing members (usually 4x, 6x, or doubled or tripled 2x stock) attached horizontally to the posts to support the joists.
- Bridging: Short pieces of lumber between joists that strengthen the framing.

#### How much does it cost to replace fascia boards?

Typical costs for vinyl or wood fascia boards and soffits range from $6 to $10 per linear foot, and the cost to fit out a simple single-level home is anything from**$600**to $2,000. The price of aluminum fascia ranges from**$8**to**$20**or more, and the budget for a single-story home ranges from**$800**to**$6,000**.

C.

### How far can beams span?

When supporting joists that span

**12 feet**with no overhang beyond the beam, a double ply beam can span in feet a value equal to its depth in inches. A double 2x12 beam can span**12 feet**; a (2) 2x10 can span**10 feet**and so on.#### What is the header on a door?

The**header**spans an opening for a window or**door**, or a cut-out in the roof or floor for a skylight, chimney, or staircase. Typically at least twice the size of surrounding framing members, a**header**is often built up from two studs, joists, or rafters.#### How do you build a door header?

**Mark all the plates at once**- Measure the distance between the king studs (door width plus 5 in.).
- TIP: Mark and measure at the same time.
- Mark the cripple locations.
- Keep edges flush.
- Transfer the layout marks to the header.
- First, fasten the header to the king stud.
- Add the cripples before the double top plate.

#### What is the standard height of a Prehung door?

Typically a pre-hung door is measured in 30 inch and 36 inch sizes with additional sizes available in non-standard widths. The doors are also a standard**80 inches tall**. Presuming the door is a 36 inch wide door, the dimensions of your opening should be**37 1/2 inch**wide by**81 1/2 inch**tall.

Updated: 1st October 2018