Pre-manufactured floor-ceiling panel for a multi-story building having load bearing walls
Floor-ceiling panels are provided for a building that includes load bearing walls that are able to withstand vertical loads and lateral loads. The building may be a low-rise building or a mid-rise building. The floor-ceiling panels, as well as the load bearing walls, corridor panels, utility walls, and other parts of the building are pre-manufactured off-site and then installed on-site at the site of the building. The floor-ceiling panels are hung from the load bearing walls and are capable to receive and transfer lateral and vertical loads, as well as providing improved sound proofing and fire rating for the building.
1. A pre-manufactured floor-ceiling panel for a multi-story building having load bearing walls, the floor-ceiling panel comprising:
a plurality of parallel metal joists;
an end member affixed to an end of the joists;
a first angle having a horizontal section and a vertical section, wherein the horizontal section of the first angle is configured to be placed on top of a plate of a load bearing wall of the building, and wherein the vertical section of the first angle is affixed to the end member;
a second angle having a horizontal section and a vertical section, wherein the horizontal section of the second angle forms a fastening location for a horizontal member of the load bearing wall, and wherein the vertical section of the second angle is affixed to the vertical section of the first angle,
wherein the horizontal section of the first angle is formed with first holes for alignment with second holes formed in the plate of the load bearing wall.
2. The pre-manufactured floor-ceiling panel of claim 1 , wherein:
the first angle runs along an entire length of the end member,
the vertical section of the first angle is welded to the end member along the entire length of the end member,
the second angle runs along the entire length of the end member, and
the vertical section of the second angle is welded to the vertical section of the first angle along the entire length of the end member.
3. The pre-manufactured floor-ceiling panel of claim 1 , wherein the first holes are sized and shaped to receive temporary devices inserted into the first and holes and the second holes, and wherein the temporary holding devices hold the first angle in alignment with the plate of the load bearing wall while the horizontal section of the first angle is affixed to the plate during installation and the temporary holding devices are removed thereafter.
4. The pre-manufactured floor-ceiling panel of claim 1 , wherein the horizontal section of the first angle is formed with at least one cutout that is sized and shaped to accommodate a spigot attached to the load bearing wall.
5. The pre-manufactured floor-ceiling panel of claim 1 , wherein the horizontal section of the second angle is affixed with screws to the horizontal member of the load bearing wall.
6. The pre-manufactured floor-ceiling panel of claim 1 , further comprising:
a first sheet of metal affixed, on a first side of the floor-ceiling panel, to the joists and the end member;
a second sheet of metal affixed, on a second side of the floor-ceiling panel, to the joists and the end member,
wherein the first and second sheets of metal provide structural strength, sound proofing, and increased fire rating for the pre-manufactured floor-ceiling panel.
7. The pre-manufactured floor-ceiling panel of claim 6 , wherein:
the first and second sheets of metal are affixed to the joists and the end members with closely spaced screws to increase the structural strength of the pre-manufactured floor-ceiling panel,
wherein interconnection of the first and second sheets of metal, the joists, and the end members define a horizontal diaphragm configured to transmit or receive loads of the building, and
the screws are spaced at about 6 inches apart.
8. The pre-manufactured floor-ceiling panel of claim 6 , further comprising:
a cement board layer that overlies the first sheet of metal;
two gypsum board layers that underlie the second sheet of metal;
a first set of screws that affix the cement board layer and the first sheet of metal to the joists and end members in tandem;
a second set of screws that affix the second sheet of metal to the joists and end members in tandem; and
a third set of screws, offset from the first set of screws, that affix the two gypsum board layers to the second sheet of metal.
9. The pre-manufactured floor-ceiling panel of claim 8 , wherein the horizontal member of the second angle overlies the cement board layer.
10. The pre-manufactured floor-ceiling panel of claim 1 , wherein the building is a low-rise building or a mid-rise building.
11. The pre-manufactured floor-ceiling panel of claim 1 , further comprising utilities that run within spaces defined by the joists and that exit at a floor side and at a ceiling side of the pre-manufactured floor-ceiling panel for surface connection with other utilities.
12. The pre-manufactured floor-ceiling panel of claim 1 , wherein the pre-manufactured floor ceiling panel forms a horizontal diaphragm that provides a load path for shear load, and wherein the shear load passes from the load bearing wall, then to the horizontal member, then to the second angle, then across the diaphragm, and then to a linking connection to a structural element of the building.
13. A multi-story building, comprising:
a stair and elevator module at a ground level of the building;
brace members that are guided into position by the stair and elevator module;
a steel transfer structure that is linked to the brace members, wherein the steel transfer structure includes vertical columns and horizontal beams;
pre-manufactured first floor-ceiling panels that are hung from the beams;
pre-manufactured first load bearing walls positioned on top of the beams;
pre-manufactured utility walls that are hung from the first load bearing walls;
corridor panels that are hung from the utility walls; and
pre-manufactured second floor-ceiling panels that are hung from the first load bearing walls, wherein each of the pre-manufactured second floor-ceiling panels include:
a plurality of parallel metal joists;
an end member affixed to an end of the joists;
a first angle having a horizontal section and a vertical section, wherein the horizontal section of the first angle is configured to be placed on top of a plate of a particular first load bearing wall of the building, and wherein the vertical section of the first angle is affixed to the end member;
a second angle having a horizontal section and a vertical section, wherein the horizontal section of the second angle forms a fastening location for a horizontal member of the particular first load bearing wall, and wherein the vertical section of the second angle is affixed to the vertical section of the first angle,
wherein the horizontal section of the first angle is formed with first holes for alignment with second holes formed in the plate of the particular first load bearing wall.
14. The building of claim 13 , further comprising a spigot installed at an end of the particular first load bearing wall, wherein the horizontal section of the first angle is formed with at least one cutout that is sized and shaped to accommodate the spigot.
15. The building of claim 13 , wherein the building is a low-rise building having five or less stories.
16. The building of claim 13 , wherein the first holes are sized and shaped to receive temporary devices inserted into the first and holes and the second holes, and wherein the temporary holding devices hold the first angle in alignment with the plate of the particular first load bearing wall while the horizontal section of the first angle is affixed to the plate during installation and the temporary holding devices are removed thereafter.
17. The building of claim 13 , wherein each of the pre-manufactured second floor-ceiling panels include:
a first sheet of metal affixed, on a first side of each of the pre-manufactured second floor-ceiling panels, to the joists and the end member;
a second sheet of metal affixed, on a second side of each of the pre-manufactured second floor-ceiling panels, to the joists and the end member,
wherein the first and second sheets of metal provide structural strength, sound proofing, and increased fire rating for the pre-manufactured floor-ceiling panel, and
wherein the first and second sheets of metal are affixed to the joists and end members with screws, including at least some closely spaced screws to increase the structural strength of the pre-manufactured second floor-ceiling panel.
18. The building of claim 17 , wherein each of the pre-manufactured second floor-ceiling panels include:
a cement board layer that overlies the first sheet of metal;
two gypsum board layers that underlie the second sheet of metal, and
wherein the screws include:
a first set of screws that affix the cement board layer and the first sheet of metal to the joists and end members in tandem;
a second set of screws that affix the second sheet of metal to the joists and end members in tandem; and
a third set of screws, offset from the first set of screws, that affix the two gypsum board layers to the second sheet of metal.
19. The building of claim 13 , wherein the pre-manufactured second floor ceiling panel forms a horizontal diaphragm that provides a load path for shear load, and wherein the shear load passes from the first load bearing walls, then to the horizontal member, then to the second angle, then across the diaphragm, and then to a linking connection to a structural element of the building.
20. A method to manufacture a floor-ceiling panel for a multi-story building that includes load bearing walls, the method comprising:
arranging a plurality of metal joists in parallel;
affixing an end member to ends of the joists;
affixing a first angle and a second angle to each other, wherein:
the first angle has a horizontal section and a vertical section, wherein the horizontal section of the first angle is configured to be placed on top of a plate of a load bearing wall of the building,
the second angle has a horizontal section and a vertical section, wherein the horizontal section of the second angle forms a fastening location for a horizontal member of the load bearing wall, and
the first angle and the second angle are affixed to each other by affixing the vertical section of the second angle to the vertical section of the first angle;
affixing the vertical section of the first angle to the end member;
forming first holes in the horizontal section of a first angle for alignment with second holes formed in the plate of the load bearing wall; and
forming at least one cutout in the horizontal section of the first angle to accommodate a spigot attached to the load bearing wall.