The spacing of the joists in the image below is determined by ______.Group of answer choicesthe spanning capacity of the metal deck over the joists.the live load on the roof.the dead load of the roof.the depth of the metal deck over the joists.

The spacing of the joists in the image below is determined by several factors. Here's a step-by-step explanation:

1. The spanning capacity of the metal deck over the joists: This refers to how far apart the joists can be while still supporting the metal deck. If the deck has a high spanning capacity, the joists can be spaced further apart. If the deck has a low spanning capacity, the joists need to be closer together.

2. The live load on the roof: This refers to the weight of temporary or movable objects on the roof, such as people, furniture, or snow. If the live load is high, the joists need to be closer together to support this weight. If the live load is low, the joists can be spaced further apart.

3. The dead load of the roof: This refers to the weight of the roof itself, including the metal deck and any insulation or waterproofing layers. If the dead load is high, the joists need to be closer together to support this weight. If the dead load is low, the joists can be spaced further apart.

4. The depth of the metal deck over the joists: This refers to how thick the metal deck is. If the deck is thick, the joists can be spaced further apart. If the deck is thin, the joists need to be closer together.

So, the spacing of the joists is determined by a combination of these factors. The exact spacing would need to be calculated by a structural engineer, taking all of these factors into account.