CA2331237C - Partially prefabricated waffle slab - Google Patents
Partially prefabricated waffle slab Download PDFInfo
- Publication number
- CA2331237C CA2331237C CA002331237A CA2331237A CA2331237C CA 2331237 C CA2331237 C CA 2331237C CA 002331237 A CA002331237 A CA 002331237A CA 2331237 A CA2331237 A CA 2331237A CA 2331237 C CA2331237 C CA 2331237C
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- Canada
- Prior art keywords
- partially prefabricated
- main body
- waffle
- slabs
- waffle slab
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/43—Floor structures of extraordinary design; Features relating to the elastic stability; Floor structures specially designed for resting on columns only, e.g. mushroom floors
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/02—Load-carrying floor structures formed substantially of prefabricated units
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/02—Load-carrying floor structures formed substantially of prefabricated units
- E04B5/026—Load-carrying floor structures formed substantially of prefabricated units with beams or slabs of plastic
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F15/00—Flooring
- E04F15/02—Flooring or floor layers composed of a number of similar elements
- E04F15/024—Sectional false floors, e.g. computer floors
- E04F15/02405—Floor panels
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Engineering & Computer Science (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
- Rod-Shaped Construction Members (AREA)
- Panels For Use In Building Construction (AREA)
Abstract
A type of partially prefabricated waffle slabs, for use in building wafer foundry (or other structures) and for the purpose of installing equipment for wafer production. Said partially prefabricated waffle slabs comprise primarily: a main body, having a number of primary holes for air circulation or other mechanical needs. Said main body can have pillar (or column) holes or notched corners for the penetration of major pillars (or columns). Said partially prefabricated waffle slabs have the advantage of meeting the requirements of achieving field safety, reasonable cost, rapid production, transportation needs, easy installation, and simple structural joints and at the same time complying with the specifications of Fab.
Description
Partially :Prefabricated Waffle Slab FIELD OF THE INVENTION
This presented invention relates to partially prefabricated waffle slabs especially '_~ for the purpose of installing equipment which produces wafers in a wafer foundry. (Said invention is also suitable for structures of other purposes). Said partially prefabricated waffle slabs will meet requirerr~ents in achieving field safety, reasonable cost, rapid production, transportation needs, easy installation, and simple structural joints.
1C~ PROBLEM THE PRESENT INVENTION AIMS TO SOLVE
As the semi-conductor market changes rapidly, construction of a wafer foundry ("Fab") must be very efficient, so that construction and performance testing can be completed which allows production to commence within set schedule to ensure profit.
As required by these delicate equipment, the Fab floors must be able to withstand 1 ~~ microvibrations. The slabs are the so-called waffle slabs. Waffle slabs, which are supported by main pillars, can be used in Fabs and other structures where resistance of microvibrations or wide spans is required.
In the conventional Fab waffle slab construction, the construction platform must be set up first, then placing the pre-assembled wooden molds on the construction platform.
2C~ After the wooden molds are secured in place the reinforced steel bars are arranged, finally topped with concrete to obtain a waffle slab. Wafer production equipment can be installed after the installations of rigidly shaped elevated floors. The multiple holes of the waffle slabs are designed to provide air circulation and other mechanical needs (the functions of such waffle slab holca are of learned technology, the description of which is 2~~ therefore not briefed further.) -I-Since conventional waffle; slabs are assembled at the construction site, conditions like the weather, the elevated construction platform and the mass number of construction platforms will affect the construction transportation that will cause delay in construction and undermine business opportunity.
:i In order to reduce the impact of weather and the massive number of workers at the construction site and to improve quality, prefabrication emerges as the preferred choice.
But feasibility of such prefabrication will depend on whether requirements for structural safety and acceptable cost during the stages of production, transportation, installation and assembly can be satisfied. In the past, the prefabrication of waffle slabs, because of the complexity in jointing waffle slabs in both the transverse and longitudinal directions, coupled by the slab's heavy weiglht, the cost for production, transportation and installation would increase significantly. Tlherefore, prefabrication of waffle slabs was not feasible in the past, and the problems ~of long construction period and unpredictable quality associated with the construction of Fab have persisted.
1 _'i SOLUTION OFFERED BY OF THE PRESENT INVENTION
The primary objective is 1:o provide a type of partially prefabricated waffle slabs.
The slabs are partially prefabricated with a bottom plank first, then shipped to the construction site for the next phrase of construction. Such partially prefabrication can reduce the weight of the waffle slabs to allow easier facilitation of production, transportation and installation. Since the concrete topping is poured on site (second phase of construction), adjacent slabs can easily be jointed. The bottom planks of partially prefabricated slabs are bvuilt strong enough to support the weight of concrete and construction dead loads, so the construction platforms, which can affect the construction 2~~ transportation, are no longer reduired.
The objective is achieved by a type of partially prefabricated waffle slab that comprises a main body which comprises of a number of holes for air circulation and other mechanical needs.
The main body can also extend forward horizontally to form a bearing plate.
The bearing plate has a number of secondary holes for air circulation and other mechanical needs.
The main body is preferably rectangular in shape for easier assembly.
The primary holes of the main bodies are preferably rectangular or circular in shape for easier facilitation in construction.
The secondary holes of the bearing plate are preferably circular or rectangular in shape for easier facilitation in construction.
Four corners of either the main body or the bearing plate are notched, for continual of columns.
The main body can also be prefabricated with holes for pillars (or columns) to pass through.
In another aspect of the invention, there is provided a partially prefabricated waffle slab, comprising at least one main body having a plurality of primary holes and disk-shaped plates extending outward horizontally, said disk-shaped plates having a plurality of holes and thinner than said main body.
BRIEF DESCRIPTION OF THE DRAWINGS
Fig. 1 An isometric view of the main body of the first embodiment.
Fig. 2 An isometric view of the partially prefabricated waffle slabs placed over four pillars (or columns), and shows several partially prefabricated waffle slabs joined together to form a larger waffle slab area ready for second phase of construction.
Fig. 3 A reflected isometric view of Fig. 2.
Fig. 4 A top view of Fig. 2.
Fig. 5 Front view of Fig. 4 Fig. 6 Section A-A of Fig. 4.
Fig. 7 Section B-B of Fig. 4, which shows the waffle slab at the finish of the second .
phase construction.
Fig. 8 Section of Fig. 7 at completion.
:i Fig. Section C-C of Fig. 4, which shows the partially prefabricated 9 waffle slab with reinforced steel bar cage installed.
Fig. 10 Section of Fig. 6, which shows the H-shaped steel replacing reinforced bars in Fig. 9.
Fig. 11 Section of Fig. 10, which shows the waffle slab at the finish of the second phase construction.
Fig. 12 A waffle slabs in a second embodiment of the invention.
Fig. 13. A waffle slabs in a third embodiment of the invention.
Fig. 14. A waffle slabs in a fourth embodiment of the invention.
Fig. 15. Section D-D of Fig. 14.
1 _'~ Fig.Jointing of several prefabricated waffle slabs of Fig.
16. 14 .
Fig. 17. A waffle slabs in a fifth embodiment of the invention.
Fig. 18. A waffle slabs in a sixth embodiment of the invention.
Fig. 19. A waffle slabs in a seventh embodiment of the invention.
NUMBERING
SCHEME
OF ELEME',NTS
1, 2 waffle slabs 10, 20 main body 11, 21 primary holes 12, 22 disk-shape plates 13, secondary holes 14 notches 15 reinforced web 18 mufti-cylindrical post connectors 19 cylindrical pillars :i 24 secondary holes DETAILED DESCRIPTION OF THE; INVENTION
As shown in Figs. 1 & fi, the partially prefabricated waffle slab I comprises a main body 10 and disk-shaped plate 12. Said main body 10 is a rectangular structure 1(I and having a plurality of primary holes 11. Said primary holes 11 are rectangular in shape in this instance of embodiment. The primary holes 11 form reinforced webs 15 transversely and longitudinally s~o main body 10 is structurally safe. Said disk-shaped plate 12 is formed by the extension of main body 10 and is thinner than main body 10.
The disk-shaped plate is made with number of secondary holes 13, which are in 1 ~~ cylindrical shape. The corners of the disk-shaped plate 12 are also notched. In Fig. 7, a mufti-cylindrical post connector 18 made of material like FRP is placed inside each of the primary holes 11 of the main bod'r 10; cylindrical pillars 19 made of such material as FPR
are also placed inside each of secondary holes 13 of the disk-shaped plate 12.
The multi-cylindrical post connectors 18 and cylindrical pillars 19 are embedded before 20 prefabrication process begins. The reinforced steel bar cage 94 is then laid in the transverse and longitudinal directions over the main body 19 (see Fig. 9).
Then second phase of construction continues vvith pouring concrete. (For easier understanding, the reinforced steel bar cage 94, mufti-cylindrical post connectors 18 and cylindrical pillars 19 are not drawn in Figs. 1 through 5).
25 The waffle slab 1 of a Fab and prefabricated pillars (or columns) 9 will be described with illustration Figs. 1 through 5.
As shown in Figs. 2 through 5, several prefabricated pillars (or columns) 9 are placed at appropriate positions in accordance with the structural needs. Each pillar 9 has a capital 91, which forms a supporting area 92 that has larger area than a capital 91. The :i notches of corners 14 of said waffle slab 1 are placed on the four pillars 9 at the corresponding position. A larger area of waffle slab floor is achieved by jointing several said waffle slabs 1. The purpose of said notches 14 is for the reinforced bars 90 to pass through for the continual jointing of pillar 9 (or columns). (For easier understanding, Figs. 2-5 show only reinforced bars 90 of one main pillar (or columns)).
Please refer to Figs 2-5 and Fig. 7 for the following discussion of the second phase construction of the waffle slabs 1..
While said waffle slabs 1 have been placed to form a larger area of waffle slab floor, the steel bars are installed .at the junctures of adjacent slabs. The second phase of construction is to pour concrete 95 as the topping. (Fig. 7 shows the structural view of 1 _'i each waffle slab 1 after the second phase of construction). In Fig. 8, the surfaces of each multi-cylindrical post connectors 18 and cylindrical pillars 19 are removed to form thorough passage for air circulation and other mechanical needs.
Fig. 10 shows the example of using H-shaped steel 96 to substitute said reinforced steel bar cage 94 shown in Fig. 9. In Fig. 11, after concrete 95 is poured, the top surface 97 of the H-shaped steel 96 remains exposed. By virtue of its rigidity, the top surface 97 can serve as support of the machines required for the installation of said rigid shaped elevated floors. This will prevent concrete on the surface 97 from cracking.
Fig. 12 is the second embodiment of the waffle slab. Said partially prefabricated waffle slab lA is different from the partially prefabricated waffle slab 1 of first embodiment in that the partially prefabricated waffle slab lA does not have the disk-shape plate and that there are holes 11' surrounding the rectangular primary holes 11.
Fig. 13 shows the third embodiment of the waffle slab, where the partially prefabricated waffle slabs 1 B are more similar to the partially prefabricated waffle slabs lA of Fig. 12. The difference is that the primary holes 11' of partially prefabricated .5 waffle slabs IB are all in circular shape.
Fig. 14 shows the fourth embodiment of the waffle slab. The differences between the first embodiment and the fourth embodiment are that the primary holes 21 and the secondary holes 23 are in circular shape, and the four corners of the fourth embodiment are not notched. In the fourth embodiment, said waffle slabs are made with rectangular holes 24 in the main body 20 for the continual jointing of major pillars (or columns);
there are four major pillars (or columns) in this embodiment. Fig. 15 shows the section D-D in Fig. 14. Fig. 16 shows a larger waffle slab floor area composed of several partially prefabricated waffle slabs 2 of Fig. 14. For constructing the same area, the span between the main pillars (or collumns) in the fourth embodiment shown in Fig.
14 is 1 '_~ smaller than the span between pillars (or columns) in the first through third embodiment, but this offers another option for the clients when building a Fab.
Fig. 17 shows the fifth err~bodiment. The partially prefabricated waffle slabs are similar to the partially prefabricated waffle slabs 2 in Fig. 14. The difference of the two is that the partially prefabricated waffle slabs 2 in this embodiment do not have the 20~ disk-shaped plate 12 or 22.
Fig. 18 shows the sixth embodiment. The partially prefabricated waffle slabs are similar to the partially prefabricated waffle slabs 2 in Fig. 14. The difference of the two is that the partially prefabricated waffle slabs 2B have only one rectangular hole 24 for major pillar (or column) to pass through in the center of main body 20.
Since there is 25 only one rectangular hole 24 for one major pillar (or column) to support, this embodiment _7_ allows greater span between pillars (or columns) and the best visual penetrations when constructing the same quantity oi' floors.
Fig. 19 shows the seventlh embodiment. The partially prefabricated waffle slabs 2C are similar to the partially prefabricated waffle slabs 2B in Fig. 18. The difference is that the partially prefabricated waffle slabs 2C do not have the disk-shaped plate 12 or 22.
The partially prefabricated waffle slabs of the present invention have the advantage of meeting the requirements in achieving field safety, reasonable cost, rapid 14 production, transportation needs, easy installation, and simple structural joints and at the same time complying with the specifications of Fab. A number of partially prefabricated waffle slabs can be jointed to form the waffle slab floor large enough for the Fab.
However, the present invention aloes not place limitations on the shape of the primary or secondary holes ~ the presence or absence of the disk-shaped plate ~ the penetration of 1.'> major pillars (or columns) ~ the notched corners ~ type of reinforcing method used or the span between the pillars (or columns). The scope of claims herein should cover all feasible technology for partially prefabricated waffle slabs.
_g_
This presented invention relates to partially prefabricated waffle slabs especially '_~ for the purpose of installing equipment which produces wafers in a wafer foundry. (Said invention is also suitable for structures of other purposes). Said partially prefabricated waffle slabs will meet requirerr~ents in achieving field safety, reasonable cost, rapid production, transportation needs, easy installation, and simple structural joints.
1C~ PROBLEM THE PRESENT INVENTION AIMS TO SOLVE
As the semi-conductor market changes rapidly, construction of a wafer foundry ("Fab") must be very efficient, so that construction and performance testing can be completed which allows production to commence within set schedule to ensure profit.
As required by these delicate equipment, the Fab floors must be able to withstand 1 ~~ microvibrations. The slabs are the so-called waffle slabs. Waffle slabs, which are supported by main pillars, can be used in Fabs and other structures where resistance of microvibrations or wide spans is required.
In the conventional Fab waffle slab construction, the construction platform must be set up first, then placing the pre-assembled wooden molds on the construction platform.
2C~ After the wooden molds are secured in place the reinforced steel bars are arranged, finally topped with concrete to obtain a waffle slab. Wafer production equipment can be installed after the installations of rigidly shaped elevated floors. The multiple holes of the waffle slabs are designed to provide air circulation and other mechanical needs (the functions of such waffle slab holca are of learned technology, the description of which is 2~~ therefore not briefed further.) -I-Since conventional waffle; slabs are assembled at the construction site, conditions like the weather, the elevated construction platform and the mass number of construction platforms will affect the construction transportation that will cause delay in construction and undermine business opportunity.
:i In order to reduce the impact of weather and the massive number of workers at the construction site and to improve quality, prefabrication emerges as the preferred choice.
But feasibility of such prefabrication will depend on whether requirements for structural safety and acceptable cost during the stages of production, transportation, installation and assembly can be satisfied. In the past, the prefabrication of waffle slabs, because of the complexity in jointing waffle slabs in both the transverse and longitudinal directions, coupled by the slab's heavy weiglht, the cost for production, transportation and installation would increase significantly. Tlherefore, prefabrication of waffle slabs was not feasible in the past, and the problems ~of long construction period and unpredictable quality associated with the construction of Fab have persisted.
1 _'i SOLUTION OFFERED BY OF THE PRESENT INVENTION
The primary objective is 1:o provide a type of partially prefabricated waffle slabs.
The slabs are partially prefabricated with a bottom plank first, then shipped to the construction site for the next phrase of construction. Such partially prefabrication can reduce the weight of the waffle slabs to allow easier facilitation of production, transportation and installation. Since the concrete topping is poured on site (second phase of construction), adjacent slabs can easily be jointed. The bottom planks of partially prefabricated slabs are bvuilt strong enough to support the weight of concrete and construction dead loads, so the construction platforms, which can affect the construction 2~~ transportation, are no longer reduired.
The objective is achieved by a type of partially prefabricated waffle slab that comprises a main body which comprises of a number of holes for air circulation and other mechanical needs.
The main body can also extend forward horizontally to form a bearing plate.
The bearing plate has a number of secondary holes for air circulation and other mechanical needs.
The main body is preferably rectangular in shape for easier assembly.
The primary holes of the main bodies are preferably rectangular or circular in shape for easier facilitation in construction.
The secondary holes of the bearing plate are preferably circular or rectangular in shape for easier facilitation in construction.
Four corners of either the main body or the bearing plate are notched, for continual of columns.
The main body can also be prefabricated with holes for pillars (or columns) to pass through.
In another aspect of the invention, there is provided a partially prefabricated waffle slab, comprising at least one main body having a plurality of primary holes and disk-shaped plates extending outward horizontally, said disk-shaped plates having a plurality of holes and thinner than said main body.
BRIEF DESCRIPTION OF THE DRAWINGS
Fig. 1 An isometric view of the main body of the first embodiment.
Fig. 2 An isometric view of the partially prefabricated waffle slabs placed over four pillars (or columns), and shows several partially prefabricated waffle slabs joined together to form a larger waffle slab area ready for second phase of construction.
Fig. 3 A reflected isometric view of Fig. 2.
Fig. 4 A top view of Fig. 2.
Fig. 5 Front view of Fig. 4 Fig. 6 Section A-A of Fig. 4.
Fig. 7 Section B-B of Fig. 4, which shows the waffle slab at the finish of the second .
phase construction.
Fig. 8 Section of Fig. 7 at completion.
:i Fig. Section C-C of Fig. 4, which shows the partially prefabricated 9 waffle slab with reinforced steel bar cage installed.
Fig. 10 Section of Fig. 6, which shows the H-shaped steel replacing reinforced bars in Fig. 9.
Fig. 11 Section of Fig. 10, which shows the waffle slab at the finish of the second phase construction.
Fig. 12 A waffle slabs in a second embodiment of the invention.
Fig. 13. A waffle slabs in a third embodiment of the invention.
Fig. 14. A waffle slabs in a fourth embodiment of the invention.
Fig. 15. Section D-D of Fig. 14.
1 _'~ Fig.Jointing of several prefabricated waffle slabs of Fig.
16. 14 .
Fig. 17. A waffle slabs in a fifth embodiment of the invention.
Fig. 18. A waffle slabs in a sixth embodiment of the invention.
Fig. 19. A waffle slabs in a seventh embodiment of the invention.
NUMBERING
SCHEME
OF ELEME',NTS
1, 2 waffle slabs 10, 20 main body 11, 21 primary holes 12, 22 disk-shape plates 13, secondary holes 14 notches 15 reinforced web 18 mufti-cylindrical post connectors 19 cylindrical pillars :i 24 secondary holes DETAILED DESCRIPTION OF THE; INVENTION
As shown in Figs. 1 & fi, the partially prefabricated waffle slab I comprises a main body 10 and disk-shaped plate 12. Said main body 10 is a rectangular structure 1(I and having a plurality of primary holes 11. Said primary holes 11 are rectangular in shape in this instance of embodiment. The primary holes 11 form reinforced webs 15 transversely and longitudinally s~o main body 10 is structurally safe. Said disk-shaped plate 12 is formed by the extension of main body 10 and is thinner than main body 10.
The disk-shaped plate is made with number of secondary holes 13, which are in 1 ~~ cylindrical shape. The corners of the disk-shaped plate 12 are also notched. In Fig. 7, a mufti-cylindrical post connector 18 made of material like FRP is placed inside each of the primary holes 11 of the main bod'r 10; cylindrical pillars 19 made of such material as FPR
are also placed inside each of secondary holes 13 of the disk-shaped plate 12.
The multi-cylindrical post connectors 18 and cylindrical pillars 19 are embedded before 20 prefabrication process begins. The reinforced steel bar cage 94 is then laid in the transverse and longitudinal directions over the main body 19 (see Fig. 9).
Then second phase of construction continues vvith pouring concrete. (For easier understanding, the reinforced steel bar cage 94, mufti-cylindrical post connectors 18 and cylindrical pillars 19 are not drawn in Figs. 1 through 5).
25 The waffle slab 1 of a Fab and prefabricated pillars (or columns) 9 will be described with illustration Figs. 1 through 5.
As shown in Figs. 2 through 5, several prefabricated pillars (or columns) 9 are placed at appropriate positions in accordance with the structural needs. Each pillar 9 has a capital 91, which forms a supporting area 92 that has larger area than a capital 91. The :i notches of corners 14 of said waffle slab 1 are placed on the four pillars 9 at the corresponding position. A larger area of waffle slab floor is achieved by jointing several said waffle slabs 1. The purpose of said notches 14 is for the reinforced bars 90 to pass through for the continual jointing of pillar 9 (or columns). (For easier understanding, Figs. 2-5 show only reinforced bars 90 of one main pillar (or columns)).
Please refer to Figs 2-5 and Fig. 7 for the following discussion of the second phase construction of the waffle slabs 1..
While said waffle slabs 1 have been placed to form a larger area of waffle slab floor, the steel bars are installed .at the junctures of adjacent slabs. The second phase of construction is to pour concrete 95 as the topping. (Fig. 7 shows the structural view of 1 _'i each waffle slab 1 after the second phase of construction). In Fig. 8, the surfaces of each multi-cylindrical post connectors 18 and cylindrical pillars 19 are removed to form thorough passage for air circulation and other mechanical needs.
Fig. 10 shows the example of using H-shaped steel 96 to substitute said reinforced steel bar cage 94 shown in Fig. 9. In Fig. 11, after concrete 95 is poured, the top surface 97 of the H-shaped steel 96 remains exposed. By virtue of its rigidity, the top surface 97 can serve as support of the machines required for the installation of said rigid shaped elevated floors. This will prevent concrete on the surface 97 from cracking.
Fig. 12 is the second embodiment of the waffle slab. Said partially prefabricated waffle slab lA is different from the partially prefabricated waffle slab 1 of first embodiment in that the partially prefabricated waffle slab lA does not have the disk-shape plate and that there are holes 11' surrounding the rectangular primary holes 11.
Fig. 13 shows the third embodiment of the waffle slab, where the partially prefabricated waffle slabs 1 B are more similar to the partially prefabricated waffle slabs lA of Fig. 12. The difference is that the primary holes 11' of partially prefabricated .5 waffle slabs IB are all in circular shape.
Fig. 14 shows the fourth embodiment of the waffle slab. The differences between the first embodiment and the fourth embodiment are that the primary holes 21 and the secondary holes 23 are in circular shape, and the four corners of the fourth embodiment are not notched. In the fourth embodiment, said waffle slabs are made with rectangular holes 24 in the main body 20 for the continual jointing of major pillars (or columns);
there are four major pillars (or columns) in this embodiment. Fig. 15 shows the section D-D in Fig. 14. Fig. 16 shows a larger waffle slab floor area composed of several partially prefabricated waffle slabs 2 of Fig. 14. For constructing the same area, the span between the main pillars (or collumns) in the fourth embodiment shown in Fig.
14 is 1 '_~ smaller than the span between pillars (or columns) in the first through third embodiment, but this offers another option for the clients when building a Fab.
Fig. 17 shows the fifth err~bodiment. The partially prefabricated waffle slabs are similar to the partially prefabricated waffle slabs 2 in Fig. 14. The difference of the two is that the partially prefabricated waffle slabs 2 in this embodiment do not have the 20~ disk-shaped plate 12 or 22.
Fig. 18 shows the sixth embodiment. The partially prefabricated waffle slabs are similar to the partially prefabricated waffle slabs 2 in Fig. 14. The difference of the two is that the partially prefabricated waffle slabs 2B have only one rectangular hole 24 for major pillar (or column) to pass through in the center of main body 20.
Since there is 25 only one rectangular hole 24 for one major pillar (or column) to support, this embodiment _7_ allows greater span between pillars (or columns) and the best visual penetrations when constructing the same quantity oi' floors.
Fig. 19 shows the seventlh embodiment. The partially prefabricated waffle slabs 2C are similar to the partially prefabricated waffle slabs 2B in Fig. 18. The difference is that the partially prefabricated waffle slabs 2C do not have the disk-shaped plate 12 or 22.
The partially prefabricated waffle slabs of the present invention have the advantage of meeting the requirements in achieving field safety, reasonable cost, rapid 14 production, transportation needs, easy installation, and simple structural joints and at the same time complying with the specifications of Fab. A number of partially prefabricated waffle slabs can be jointed to form the waffle slab floor large enough for the Fab.
However, the present invention aloes not place limitations on the shape of the primary or secondary holes ~ the presence or absence of the disk-shaped plate ~ the penetration of 1.'> major pillars (or columns) ~ the notched corners ~ type of reinforcing method used or the span between the pillars (or columns). The scope of claims herein should cover all feasible technology for partially prefabricated waffle slabs.
_g_
Claims (6)
1. A partially prefabricated waffle slab, comprising at least one main body having a plurality of primary holes and disk-shaped plates extending outward horizontally, said disk-shaped plates having a plurality of holes and thinner than said main body.
2. The partially prefabricated waffle slab as recited in claim 1, wherein said main body has a rectangular shape.
3. The partially prefabricated waffle slab as recited in claim l, wherein said primary holes of said main body have a rectangular or circular shape.
4. The partially prefabricated waffle slab as recited in claim 1, wherein said holes of said disk-shaped plate have a rectangular or circular shape.
5. The partially prefabricated waffle slab as recited in claim 1, wherein four corners of said disk-shaped plate are notched.
6. The partially prefabricated waffle slab as recited in claim 1, wherein said main body has at least one pillar hole.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002331237A CA2331237C (en) | 2001-01-17 | 2001-01-17 | Partially prefabricated waffle slab |
| US09/760,886 US20020092249A1 (en) | 2001-01-17 | 2001-01-17 | Partially prefabricated waffle slab |
| GB0101413A GB2371313A (en) | 2001-01-17 | 2001-01-19 | Partially prefabricated waffle slab |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002331237A CA2331237C (en) | 2001-01-17 | 2001-01-17 | Partially prefabricated waffle slab |
| US09/760,886 US20020092249A1 (en) | 2001-01-17 | 2001-01-17 | Partially prefabricated waffle slab |
| GB0101413A GB2371313A (en) | 2001-01-17 | 2001-01-19 | Partially prefabricated waffle slab |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2331237A1 CA2331237A1 (en) | 2002-07-17 |
| CA2331237C true CA2331237C (en) | 2005-08-09 |
Family
ID=27171436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002331237A Expired - Lifetime CA2331237C (en) | 2001-01-17 | 2001-01-17 | Partially prefabricated waffle slab |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20020092249A1 (en) |
| CA (1) | CA2331237C (en) |
| GB (1) | GB2371313A (en) |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140237910A1 (en) * | 2000-02-18 | 2014-08-28 | Christopher M. Hunt | Architecturally finished complete building envelope system |
| US6851236B1 (en) * | 2001-01-24 | 2005-02-08 | Syrstone, Inc. | Raised terrace floor using small paving blocks |
| BE1015517A3 (en) * | 2003-05-15 | 2005-05-03 | Denys Nv | METHOD FOR THE CONSTRUCTION OF A TUNNEL UNDER A ROADWAY AND APPLIED THEREBY vault. |
| ES2308941B1 (en) * | 2008-02-29 | 2009-07-28 | Industrias Tomas Morcillo, S.L. | TECHNICAL FLOOR AND INSTALLATION PROCEDURE. |
| TW201002920A (en) * | 2008-07-01 | 2010-01-16 | Taiwan Nano Technology Applic Corp | A raised floor structure |
| US8966855B1 (en) * | 2012-06-25 | 2015-03-03 | Martin P. Miller | Foundation system for modular system smart buildings |
| US9194119B2 (en) | 2012-10-04 | 2015-11-24 | ST Global Partners, LLC | Peel and stick decoupling membrane |
| JP6414686B2 (en) * | 2014-12-26 | 2018-10-31 | 清水建設株式会社 | Bonding structure in precast concrete floorboard |
| DE102015012053A1 (en) | 2015-09-14 | 2017-03-16 | M+W Group GmbH | Manufacturing plant for the production of integrated circuits from semiconductor wafers and waffle element for a manufacturing plant |
| CN105863140A (en) * | 2016-06-08 | 2016-08-17 | 湖南标迪夫节能科技有限公司 | Precast hollow floor's component for stress island based hollow floor system |
| EP3289148A1 (en) | 2016-06-09 | 2018-03-07 | Mirkhani, Seyed Soroush | A slab filler |
| TWI656265B (en) * | 2017-09-06 | 2019-04-11 | 潤弘精密工程事業股份有限公司 | Steel mold device for mold casting a waffle slab and method of manufacturing a waffle slab having chamfers |
| TWI656266B (en) * | 2017-09-08 | 2019-04-11 | Ruentex Engineering & Construction Co., Ltd. | Method of forming a waffle slab with surafces of concrete that do not require polishing |
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| US11859382B2 (en) | 2019-02-15 | 2024-01-02 | Quickset Limited | Formwork for foundation construction |
| EP3816360A1 (en) | 2019-10-30 | 2021-05-05 | Ecole Polytechnique Federale De Lausanne (EPFL) EPFL-TTO | Load bearing device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3788012A (en) * | 1972-02-22 | 1974-01-29 | Arnold Ass Inc | Modular building structure elements of slabs with central support posts |
| US3918222A (en) * | 1974-06-03 | 1975-11-11 | Bahram Bahramian | Prefabricated modular flooring and roofing system |
| JPH07109112B2 (en) * | 1987-04-14 | 1995-11-22 | 清水建設株式会社 | Construction method of watful slab and lower part of watful slab |
-
2001
- 2001-01-17 CA CA002331237A patent/CA2331237C/en not_active Expired - Lifetime
- 2001-01-17 US US09/760,886 patent/US20020092249A1/en not_active Abandoned
- 2001-01-19 GB GB0101413A patent/GB2371313A/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| US20020092249A1 (en) | 2002-07-18 |
| GB0101413D0 (en) | 2001-03-07 |
| CA2331237A1 (en) | 2002-07-17 |
| GB2371313A (en) | 2002-07-24 |
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