Advanced curtain wall top-down renovation

1. A curtain wall renovation system for an exterior of a building, comprising:

a plurality of new mullions attached to a top surface of a first floor slab of a first floor and extending downwardly external to the first floor slab and below the first floor slab; and

a temporary weather shield system assembled in a second floor below the first floor and inset from an outer edge of a second floor slab of the second floor, the temporary weather shield system including:

a plurality of dry anchoring devices fastened to a top surface of the second floor slab;

a plurality of temporary mullions supported on the top surface of the second floor slab and each including a bottom and a top; and

a plurality of reusable panels, each reusable panel being secured to two laterally adjacent temporary mullions of the plurality of temporary mullions,

wherein the bottom of each temporary mullion is structurally interlocked to a corresponding one of the plurality of dry anchoring devices, and wherein the top of each temporary mullion is structurally interlocked to a corresponding one of the plurality of new mullions.

2. The curtain wall renovation system of claim 1 , wherein said plurality of reusable panels are secured to said plurality of temporary mullions without fasteners, wherein said plurality of temporary mullions is structurally interlocked to said plurality of dry anchoring devices without fasteners, and wherein said plurality of temporary mullions is structurally interlocked to said plurality of new mullions without fasteners.

3. The curtain wall renovation system of claim 1 , further comprising a bottom connection clip that structurally interlocks the bottom of each temporary mullion to the corresponding one of the plurality of dry anchoring devices, wherein the bottom connection clip engages the bottom of each temporary mullion and the corresponding one of the plurality of dry anchoring devices.

4. The curtain wall renovation system of claim 3 , wherein the bottom connection clip slidably engages one or both of the bottom of each temporary mullion and the corresponding one of the plurality of dry anchoring devices via a mateable male-female sliding engagement.

5. The curtain wall renovation system of claim 1 , further comprising a top connection clip extending between and structurally interlocking the top of each temporary mullion to the corresponding one of the plurality of new mullions, wherein opposing ends of the top connection clip engage the top of each temporary mullion and the corresponding one of the plurality of new mullions.

6. The curtain wall renovation system of claim 5 , wherein the top connection clip slidably engages one or both of the top of each temporary mullion and the corresponding one of the plurality of new mullions via a mateable male-female sliding engagement.

7. The curtain wall renovation system of claim 5 , further comprising a slide block coupled to one of the plurality of temporary mullions and engageable with the top connection clip to prevent the top connection clip from sliding out of engagement with the corresponding one of the plurality of new mullions.

8. The curtain wall renovation system of claim 1 , wherein a structural line for the plurality of new mullions vertically aligns with a structural line for the plurality of temporary mullions.

9. The curtain wall renovation system of claim 8 , further comprising a plurality of old mullions extending below the second floor, wherein the structural line for the plurality of new mullions is not aligned with a structural line of the plurality of old mullions.

10. A method of renovating a curtain wall system for an exterior of a building, comprising:

attaching a plurality of new mullions to a top surface of a first floor slab of a first floor, the plurality of new mullions extending downwardly external to the building and below an outer edge of the first floor slab;

assembling a temporary weather shield system in a second floor below the first floor and inset from an outer edge of a second floor slab of the second floor, wherein assembling the temporary weather shield system includes:

fastening a plurality of dry anchoring devices to a top surface of the second floor slab;

supporting a plurality of temporary mullions on the top surface of the second floor slab, each temporary mullion including a bottom and a top; and

securing reusable panels between laterally adjacent temporary mullions of the plurality of temporary mullions;

structurally interlocking the bottom of each temporary mullion to a corresponding one of the plurality of dry anchoring devices; and

structurally interlocking the top of each temporary mullion to a corresponding one of the plurality of new mullions.

11. The method of claim 10 , wherein attaching the plurality of new mullions to the top surface of the first floor slab of the first floor comprises:

attaching each new mullion to the top surface of the first floor slab using a mullion anchoring system, each mullion anchoring system including:

a dry anchoring device left fastened to the top surface of the first floor slab following renovation of the first floor; and

a mullion connector extending between and structurally interlocking the dry anchoring device without a fastener to one of the plurality of new mullions.

12. The method of claim 10 , wherein structurally interlocking the bottom of each temporary mullion to the corresponding one of the plurality of dry anchoring devices comprises:

engaging a bottom connection clip with each dry anchoring device;

lifting each temporary mullion above the bottom connection clip; and

dropping each temporary mullion into sliding engagement with the bottom connection clip.

13. The method of claim 10 , wherein structurally interlocking the top of each temporary mullion to the corresponding one of the plurality of new mullions comprises:

slidably engaging a top connection clip against each new mullion;

sliding the top connection clip upward relative to each new mullion until the top connection clip is positioned vertically above the top of each temporary mullion;

aligning each temporary mullion with the corresponding one of the plurality of new mullions; and

sliding the top connection clip downward relative to the corresponding one of the plurality of new mullions and into sliding engagement with each temporary mullion.

14. The method of claim 13 , further comprising preventing the top connection clip from sliding out of engagement with the corresponding one of the plurality of new mullions with a slide block coupled to each temporary mullion.

15. The method of claim 10 , wherein the plurality of new mullions comprises a first plurality of new mullions, and the plurality of dry anchoring devices comprises a first plurality of dry anchoring devices, the method further comprising:

disassembling the temporary weather shield system from the second floor except for the first plurality of dry anchoring devices fastened to the top surface of the second floor slab;

attaching a second plurality of new mullions to the top surface of the second floor slab, the second plurality of new mullions extending downwardly external to the building and below the outer edge of the second floor slab;

assembling the temporary weather shield system in a third floor below the second floor and inset from an outer edge of a third floor slab of the third floor, wherein assembling the temporary weather shield system in the third floor includes:

fastening a second plurality of dry anchoring devices to a top surface of the third floor slab;

supporting the plurality of temporary mullions on the top surface of the third floor slab; and

securing the reusable panels to two laterally adjacent temporary mullions of the plurality of temporary mullions;

structurally interlocking the bottom of each temporary mullion to a corresponding one of the second plurality of dry anchoring devices; and

structurally interlocking the top of each temporary mullion without a fastener to a corresponding one of the second plurality of new mullions.

16. The method of claim 15 , wherein attaching the second plurality of new mullions to the top surface of the second floor slab comprises structurally interlocking each new mullion of the second plurality of new mullions to a corresponding one of the first plurality of dry anchoring devices with a mullion connector.