CA1083378A - Method for manufacturing a hollow structural component of a building - Google Patents
Method for manufacturing a hollow structural component of a buildingInfo
- Publication number
- CA1083378A CA1083378A CA287,367A CA287367A CA1083378A CA 1083378 A CA1083378 A CA 1083378A CA 287367 A CA287367 A CA 287367A CA 1083378 A CA1083378 A CA 1083378A
- Authority
- CA
- Canada
- Prior art keywords
- slab
- floor
- space
- ceiling
- casting
- 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
Links
Abstract
ABSTRACT
A method of manufacturing a hollow floor or ceiling section of a building which method comprises supporting in a floor or ceiling space to be closed, a pre-formed structural element such that the element provides a support surface onto which a floor or ceiling slab may be cast, casting the slab onto the element and thereafter relocating the element in the space or introducing a similar element into the space whereby the relocated or introduced element is spaced from the cast slab such that the slab and element together provide a hollow floor or ceiling section.
A method of manufacturing a hollow floor or ceiling section of a building which method comprises supporting in a floor or ceiling space to be closed, a pre-formed structural element such that the element provides a support surface onto which a floor or ceiling slab may be cast, casting the slab onto the element and thereafter relocating the element in the space or introducing a similar element into the space whereby the relocated or introduced element is spaced from the cast slab such that the slab and element together provide a hollow floor or ceiling section.
Description
1~83378 This invention relates to a method for manufacturing a hollow floor or ceiling section of a building. Floors or ceilings manufactured by the invention are ormed partly from prefabricated elements and partly from S concrete cast on the site.
Hollow floors and ceilings for buildings normally are` produced by utilizing long slabs and long beams. When such slabs are being manufactured, hollow spaces extending parallel to the span of the slab are provided at spaced locations within the slab. In the case of beam construction, an upper element is placed on an industrially prefabricated U-section lower-slab beam element, whereby a hollow space is ormed.
The invention provides a method of manufacturing a hollow floor or ceiling section of a building which method '~ comprises supporting in a floor or ceiling space to be closed a pre-formed structural èlement such that the element provides a support surface onto which a floor or ceiling slab may be cast, casting the slab onto the element and thereafter relocating the element in the space or introducing a similar element into the space whereby the relocated or introduced element is spaced from the cast`slab such that the slab and element together provide :
a hollow floor or ceiling section.
According to a feature of the invention after casting the slab, the element may be re-used to provide the support surface for casting a similar slab in an adjacent floor or ceiling space.
According to another feature of the invention ~L
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-,; .~.. ` . .. , . ~, ,,,, . ,. , . . -: ~ . . - , . ` ` :. - . ` . ` . ~:: , ;,.,: , . ., .. , . . . .. ,, .. , , .,; ,.. .
1~83378 where the element is to be relocated in the space, the element may be inverted after ~he casting process beore subsequently being relocated.
According to a further feature of the invention S the element may be supported prior to and after the casting process on a pair of spaced structural beams defining the space.
According to a still further feature of the invention the support surface of the element may be covered with a film of a suitable material prior to the casting process to prevent the slab, when cast, from adhering to the support surface of the element. -The invention also provides, in a building, a floor or ceiling when manufactured according to a method as defined in any of the five immediately preceding paragraphs.
Some embodiments of the invention will now be described, by way of example with reference to the accompanying drawings, in which: -Figure 1 (A) shows a floor or ceiling section prior to the casting process in which inverted T-section beams support the elements which are small slabs cast on a heat-insulation plate.
Figure 1 (B) shows the floor or ceiling section of Figure 1 (A) a~ter casting of the slab with the element relocated in the space between the beams.
Figure 2 (A) shows a floor or ceiling section prior to the casting process similar to that mentioned above, but in which the elements are TT-section slabs.
Figure 2 (B) shows the floor or ceiling section .. , ,. .. , . . - ~ :, . .,. .,:: :",: .: .. , .: :
of Figure 2 (A) after casting o the slab with the element relocated in the space between the beams.
Figure 3 ~A) shows a floor or ceiling section prior to the casting process in which the elements are bolted to T-section beams. ~
Figure 3 (B) shows the floor or ceiling section of Figure 3 (B) after casting of the slab with the element inverted and bolted to the beams.
Referring to the drawings, pre-formed structural elements 1 are placed between beams 2 in a floor or ceiling space to be closed. The elements 1 can be supported on the beams, e.g., by means of wooden vertical supports 3 (Figure lA), by means of horizontal beams 4 ;
(Figure 2A), by means of bolt fasten ng 5 (Figure 3A), or by means of steel brackets 6 placed at the ends of the beams (Figure lB). The elements 1 are covered with a film of a plastics material or any other suitable film 7 to prevent adhesion between the slab to be cast and the top support surface of the element 1 which can be fastened at its edges by means of a filling material 8 to be introduced into the joint between the element 1 and the beam 2. The upper slab 9 is reinforced and concreted onto the top face of the element 1. After the concrete has hardened, the elements 1 are lowered, the film 7 and the filling material 8 are removed, and, if necessary, any slits at the joints o the structural components are seamed. In the embodiment in accordance with Figure 3, the elements 1 are inverted before being re-located in their final positions.
In the embodiment in accordance with Figure 1, in - ~833'78 - their final positions, the element 1 can be fastened to the flanges of the beams 2 at its ends, in which case the element functions as a tension bar when loaded. This may be favourable in view of the reinforcement and in view S of the dimensioning of holes required in the slab 9.
The embodiment in accordance with Figure 2 is particu-larly suitable for use as a ceiling construction particu-larly when refrigeration is required. The embodiments in accordance with Figures 2 and 3 are well suitable as intermediate-floor constructions and may include components for purposes of heating the floor.
In the embodiments described, the elements 1 may also be supported on the ground or on an intermediate floor a~ready constructed underneath. In the case of embodiments in lS which beams 2 are provided as in accordance with Figures 1 and 2 such a procedure may be justified, because the carrying capacity of-the beam 2 is considerably higher and the bending forces lower when it functions together with the slab 9 as compared with its carrying capacity alone. The elements 1 can be used several times before they are retained in their final position between the beams to act as support surfaces for the casting process in an adjacent floor or ceiling space.
The elements may be made from concrete or some other suitable material.
The advantages of the present invention are as follows:
As compared with the hollow section mentioned herein-before the present hollow floor or ceiling section is formed in two parts by means of which the construction work - can be performed equally economically as when using a completely prefabricated hollow section. Placing the beams on supports ~ .
4 _ ;. ' ' . .` '.',: ' . ' ' . . . . ,' .' ';'. ' ; ' . 1 11~8:~3~71!3 ~~ and placing the elements on the beams involve no further labour than in the installa~ion of the above complete structures on their supports, and the concre~ing of the I upper slab is similar to the dressing required to be ¦ S performed on the completely prefabricated section. The r ¦ use of the elements as the support surface for the casting of the upper slab reduced the work ko be performed on the site and the reinforcement work is simple. As the hollow structure is in two parts, light crane equipment is adequate. The transportation costs are reduced as part > o the structures, e.g. the elements to be lowered and the concrete mix, can be manufactured near the building site.
The section obtained by means of the method is suitable for use when the hollow space is required for the purpose of heating the floor, i.e. when hot air is blown into the hollow spaces for heating the floor.
When used as a ceillng construction, the hollow space must be ventilated so as to remove any moisture possibly trapped therein. This drawback can be converted into an advantage by placing an evaporator and blower of a re-frigeration machine into the closed hollow space, whereby radiation heat from the sun or any other heat kransferred to the roof from the atmosphere can be recovered and used ~5 for heating the building. The construction is well suitable for this purpose because heat insulation may be placed underneath the section and is provided with diffusion sealing and because the upper slab is unified and connected to the beams without element joints.
_ 5 :: ' ,' ~ ' , :: : ~ . ' , . . :' .:
Hollow floors and ceilings for buildings normally are` produced by utilizing long slabs and long beams. When such slabs are being manufactured, hollow spaces extending parallel to the span of the slab are provided at spaced locations within the slab. In the case of beam construction, an upper element is placed on an industrially prefabricated U-section lower-slab beam element, whereby a hollow space is ormed.
The invention provides a method of manufacturing a hollow floor or ceiling section of a building which method '~ comprises supporting in a floor or ceiling space to be closed a pre-formed structural èlement such that the element provides a support surface onto which a floor or ceiling slab may be cast, casting the slab onto the element and thereafter relocating the element in the space or introducing a similar element into the space whereby the relocated or introduced element is spaced from the cast`slab such that the slab and element together provide :
a hollow floor or ceiling section.
According to a feature of the invention after casting the slab, the element may be re-used to provide the support surface for casting a similar slab in an adjacent floor or ceiling space.
According to another feature of the invention ~L
qF
I.` .
-,; .~.. ` . .. , . ~, ,,,, . ,. , . . -: ~ . . - , . ` ` :. - . ` . ` . ~:: , ;,.,: , . ., .. , . . . .. ,, .. , , .,; ,.. .
1~83378 where the element is to be relocated in the space, the element may be inverted after ~he casting process beore subsequently being relocated.
According to a further feature of the invention S the element may be supported prior to and after the casting process on a pair of spaced structural beams defining the space.
According to a still further feature of the invention the support surface of the element may be covered with a film of a suitable material prior to the casting process to prevent the slab, when cast, from adhering to the support surface of the element. -The invention also provides, in a building, a floor or ceiling when manufactured according to a method as defined in any of the five immediately preceding paragraphs.
Some embodiments of the invention will now be described, by way of example with reference to the accompanying drawings, in which: -Figure 1 (A) shows a floor or ceiling section prior to the casting process in which inverted T-section beams support the elements which are small slabs cast on a heat-insulation plate.
Figure 1 (B) shows the floor or ceiling section of Figure 1 (A) a~ter casting of the slab with the element relocated in the space between the beams.
Figure 2 (A) shows a floor or ceiling section prior to the casting process similar to that mentioned above, but in which the elements are TT-section slabs.
Figure 2 (B) shows the floor or ceiling section .. , ,. .. , . . - ~ :, . .,. .,:: :",: .: .. , .: :
of Figure 2 (A) after casting o the slab with the element relocated in the space between the beams.
Figure 3 ~A) shows a floor or ceiling section prior to the casting process in which the elements are bolted to T-section beams. ~
Figure 3 (B) shows the floor or ceiling section of Figure 3 (B) after casting of the slab with the element inverted and bolted to the beams.
Referring to the drawings, pre-formed structural elements 1 are placed between beams 2 in a floor or ceiling space to be closed. The elements 1 can be supported on the beams, e.g., by means of wooden vertical supports 3 (Figure lA), by means of horizontal beams 4 ;
(Figure 2A), by means of bolt fasten ng 5 (Figure 3A), or by means of steel brackets 6 placed at the ends of the beams (Figure lB). The elements 1 are covered with a film of a plastics material or any other suitable film 7 to prevent adhesion between the slab to be cast and the top support surface of the element 1 which can be fastened at its edges by means of a filling material 8 to be introduced into the joint between the element 1 and the beam 2. The upper slab 9 is reinforced and concreted onto the top face of the element 1. After the concrete has hardened, the elements 1 are lowered, the film 7 and the filling material 8 are removed, and, if necessary, any slits at the joints o the structural components are seamed. In the embodiment in accordance with Figure 3, the elements 1 are inverted before being re-located in their final positions.
In the embodiment in accordance with Figure 1, in - ~833'78 - their final positions, the element 1 can be fastened to the flanges of the beams 2 at its ends, in which case the element functions as a tension bar when loaded. This may be favourable in view of the reinforcement and in view S of the dimensioning of holes required in the slab 9.
The embodiment in accordance with Figure 2 is particu-larly suitable for use as a ceiling construction particu-larly when refrigeration is required. The embodiments in accordance with Figures 2 and 3 are well suitable as intermediate-floor constructions and may include components for purposes of heating the floor.
In the embodiments described, the elements 1 may also be supported on the ground or on an intermediate floor a~ready constructed underneath. In the case of embodiments in lS which beams 2 are provided as in accordance with Figures 1 and 2 such a procedure may be justified, because the carrying capacity of-the beam 2 is considerably higher and the bending forces lower when it functions together with the slab 9 as compared with its carrying capacity alone. The elements 1 can be used several times before they are retained in their final position between the beams to act as support surfaces for the casting process in an adjacent floor or ceiling space.
The elements may be made from concrete or some other suitable material.
The advantages of the present invention are as follows:
As compared with the hollow section mentioned herein-before the present hollow floor or ceiling section is formed in two parts by means of which the construction work - can be performed equally economically as when using a completely prefabricated hollow section. Placing the beams on supports ~ .
4 _ ;. ' ' . .` '.',: ' . ' ' . . . . ,' .' ';'. ' ; ' . 1 11~8:~3~71!3 ~~ and placing the elements on the beams involve no further labour than in the installa~ion of the above complete structures on their supports, and the concre~ing of the I upper slab is similar to the dressing required to be ¦ S performed on the completely prefabricated section. The r ¦ use of the elements as the support surface for the casting of the upper slab reduced the work ko be performed on the site and the reinforcement work is simple. As the hollow structure is in two parts, light crane equipment is adequate. The transportation costs are reduced as part > o the structures, e.g. the elements to be lowered and the concrete mix, can be manufactured near the building site.
The section obtained by means of the method is suitable for use when the hollow space is required for the purpose of heating the floor, i.e. when hot air is blown into the hollow spaces for heating the floor.
When used as a ceillng construction, the hollow space must be ventilated so as to remove any moisture possibly trapped therein. This drawback can be converted into an advantage by placing an evaporator and blower of a re-frigeration machine into the closed hollow space, whereby radiation heat from the sun or any other heat kransferred to the roof from the atmosphere can be recovered and used ~5 for heating the building. The construction is well suitable for this purpose because heat insulation may be placed underneath the section and is provided with diffusion sealing and because the upper slab is unified and connected to the beams without element joints.
_ 5 :: ' ,' ~ ' , :: : ~ . ' , . . :' .:
Claims (5)
1. A method of manufacturing a hollow floor or ceiling section of a building which method comprises supporting, in a floor or ceiling space to be closed, a pre-formed structural element such that the element provides a support surface onto which a floor or ceiling slab may be cast, casting the slab onto the element and thereafter relocating the element in the space or introducing a similar element into the space whereby the relocated or introduced element is spaced from the cast slab such that the slab and element together provide a hollow floor or ceiling section.
2. The method as claimed in claim 1, wherein after casting the slab the element is re-used to provide support surface for casting a similar slab in an adjacent floor or ceil-ing space.
3. The method as claimed in claim 1 wherein the element is inverted after the casting process before subsequently being relocated.
4. The method as claimed in claim 1, 2, or 3, wherein the element is supported prior to and after the casting process on a pair of spaced structural beams, defining the space.
5. The method as claimed in claim 1, 2 or 3, wherein the support surface of the element is covered with a film of a suitable material prior to the casting process to prevent the slab, when cast, from adhering to the support surface of the element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA287,367A CA1083378A (en) | 1977-09-23 | 1977-09-23 | Method for manufacturing a hollow structural component of a building |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA287,367A CA1083378A (en) | 1977-09-23 | 1977-09-23 | Method for manufacturing a hollow structural component of a building |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1083378A true CA1083378A (en) | 1980-08-12 |
Family
ID=4109606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA287,367A Expired CA1083378A (en) | 1977-09-23 | 1977-09-23 | Method for manufacturing a hollow structural component of a building |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1083378A (en) |
-
1977
- 1977-09-23 CA CA287,367A patent/CA1083378A/en not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |