A kind of light carcass mould member for in-situ casting
(1) technical field
The present invention relates to a kind of light carcass mould member for in-situ casting.
(2) background technology
At present, Cast-in-place Concrete Building Floor is to use wider floor structural form, and the lightening permanent loose tool of filling in it has various hollow sections and box, and box has hollow or solid.Is that ZL00203695.9, name are called " combination concrete hidden rib floor structure " utility model patent as Shijiazhuang City, Hebei Province city beam army in the patent No. of application on February 23rd, 2000, a kind of shuttering member is disclosed in its manual, it can be solid, also can be hollow, its profile can be made shapes such as rectangle, circle, polygon according to designing requirement.And for example the patent No. of the thrifty grade of Kweiyang mark people invention and application is that ZL01206422.X, name are called " open-spandrel sandwich board built-in template " utility model patent, its built-in template is solid, and this template is the solid built-in template of expansion type polystyrene plastics, or be the solid built-in template of magnesium oxychloride material, or be the solid built-in template of perlite material; The cross sectional shape of the built-in template that this is solid can be square, rectangle, circle, ellipse, arc or with the solid section shape of circular arc and rectilinear(-al).Above-mentioned disclosed these solid light carcass mould member for in-situ casting, be applied in the Cast-in-place Concrete Building Floor, be shuttering member be again prefabricated noggin piece, have simple in structure, easy to manufacture, characteristics such as cost is low, but in carrying, in the work progress, its bottom surface is prone to and fractures, phenomenons such as cracking, thereby the breakage rate of light tyre moulding member is big, carrying, construction is inconvenient, increased construction cost, in addition, if the bottom surface of light tyre moulding member flushes with Cast-in-place concrete rib bottom surface, be exposed in the ceiling, then in long-term use, easily crack, influence the presentation quality of superstructure ceiling, therefore, develop a kind of novel light carcass mould member for in-situ casting for being badly in need of.
(3) summary of the invention
The object of the present invention is to provide a kind of light carcass mould member for in-situ casting, have intensity height, non-frangibility cracking, easy construction, do not influence the characteristics such as presentation quality of superstructure ceiling.
Solution of the present invention is on the basis of existing technology, comprises polyhedron solid light material members, it is characterized in that also including base plate, and polyhedron solid light material members and base plate are connected to form integral body.Like this, owing to also include base plate, thereby the intensity of light tyre moulding member and rigidity are big, and shock resistance is good, and its base plate is the frangibility cracking not, carrying and easy construction, simultaneously, after light tyre moulding member was applied to superstructure, the crack resistance of its base plate was good, be difficult for cracking, do not influence the presentation quality of superstructure ceiling; In addition, characteristics such as that light tyre moulding member also has is simple in structure, resistance to deformation, the anti-vibration performance is good, easy to manufacture, cost is low, speed of application is fast, thereby reached purpose of the present invention, the superstructure, roof system, body of wall, sole plate and the bridge that are applicable to cast-in-situ reinforced concrete or prestressed reinforced concrete use, and are particularly useful for arch without beam and use.
Feature of the present invention is that also base plate stretches out the peripheral side formation bridging piece of polyhedron solid light material members.Like this, after form element was applied in the Cast-in-place Concrete Building Floor, its bridging piece that stretches out the side can replace construction formwork, had removed template from and had laid operation, had improved speed of application greatly, had reduced construction cost.
Feature of the present invention is that also described base plate is cement mortar or cement concrete base plate.Like this, cement paste or cement concrete base plate strength height, rigidity are big, can satisfy the requirement of bearing working load fully.
Feature of the present invention is that also described polyhedron solid light material members is the foam pellet of foam-plastic blocks, expanded pearlite sillar, expanded vermiculite piece, foaming or aerating concrete piece, haydite concrete piece, straw husk cementitious materials piece, charcoal concrete piece or cementing.Like this, form element has better sound insulation, heat insulation, heat-insulating property; The diversity of its light material kind is drawn materials when being convenient to produce nearby, helps reducing production costs.
Feature of the present invention is that also the external surface of described polyhedron solid light material members is local or has all wrapped cement paste or cement mortar or Cement fibre slurry or Cement fibre net mortar or cement wire mesh mortar or concrete theca externa.Like this, after form element was applied in the Cast-in-place Concrete Building Floor, the external surface of polyhedron solid light material members had wrapped theca externa, can guarantee the unlikely suction of light material, segregation, reduce the breakage rate of form element, simultaneously, also improved the pouring quality of Cast-in-place Concrete Building Floor.
Feature of the present invention also is to contain reinforce among described polyhedron solid light material members or base plate or both, perhaps has reinforce to expose.Reinforce is at least a in reinforcing bar, steel wire, presstressed reinforcing steel, steel mesh reinforcement, gauze wire cloth, fiber, fibre bundle, fibrous mesh cloth, nonwoven, metal foil band, porose thin band, strap, the braid over braid.Like this, improved the strength and stiffness of light tyre moulding member greatly, made form element cracky not in stacking, transportation, installation, work progress,,, also do not needed to repair, can continue to come into operation because of involving of reinforce arranged even the breakage of small size is arranged.If also have reinforce to expose the form element outside on the form element, when form element was applied in the Cast-in-place Concrete Building Floor, reinforce and Cast-in-place concrete that it exposes combined, and can improve the bond stress between Cast-in-place concrete and the form element greatly, optimized the performance of whole superstructure; Simultaneously, expose reinforce and also make things convenient for form element when carrying, make handle or suspension ring or suspension hook and use.
Feature of the present invention is that also the horizontal profile of described polyhedron solid light material members or vertical section are shaped as rectangle, square, polygon, arc angle polygon, chamfering polygon, multi sphere shape, corrugated or circular.Like this, the variation of form element shape, make form element be applied in the Cast-in-place Concrete Building Floor after, correspondingly formed various difform cast-in-situ concrete structures, thereby made that the structure of Cast-in-place Concrete Building Floor is more reasonable, made things convenient for design and construction unit to select for use.
Feature of the present invention is that also described polyhedron solid light material members is provided with at least one in inner corner trim, chamfering, groove, pit, hole, boss module, raised line, the external corner.Like this, after form element was applied in the Cast-in-place Concrete Building Floor, Cast-in-place concrete poured in inner corner trim, chamfering, groove, pit, the hole, and the corresponding Cast-in-place concrete that forms the part adds competent structure; The boss module that is provided with on the form element, raised line, external corner can be found time the concrete that does not stress in the superstructure, further alleviate the weight of superstructure self, save the consumption of concrete, reduce the cost of superstructure, also improve the performance of superstructure simultaneously.
Feature of the present invention also is described inner corner trim, chamfering, groove, raised line self or is serial connection, parallel, quadrature, oblique or grade separation setting mutually.Like this, when form element is applied in the Cast-in-place Concrete Building Floor, after Cast-in-place concrete pours in above-mentioned inner corner trim, chamfering, the groove, formed self or be parallel to each other, the Cast-in-place concrete reinforcement of quadrature or oblique, improved the combination property of Cast-in-place Concrete Building Floor.
Feature of the present invention also is to be provided with in the described polyhedron solid light material members at least one in stiffening rib, bracing boom, the reinforcing rib, perhaps there be in stiffening rib, bracing boom, the reinforcing rib at least one to expose outside the polyhedron solid light material members, perhaps also have reinforce to expose on stiffening rib, bracing boom, the reinforcing rib.Like this, after form element is applied in the Cast-in-place Concrete Building Floor, stiffening rib, bracing boom, reinforcing rib that is provided with in the form element or the stiffening rib that exposes, bracing boom, reinforcing rib can form the cast-in-place and prefabricated composite construction that combines with Cast-in-place concrete, have optimized the inner stress system of Cast-in-place Concrete Building Floor.If also have reinforce to expose on it, then form element and Cast-in-place concrete bonding is more firm, and the globality of superstructure is better.
Feature of the present invention is that also the external surface of described polyhedron solid light material members is corrugated, zigzag, plucking shape or exasperate external surface.Like this, when form element was applied in the Cast-in-place Concrete Building Floor, because of its surface is corrugated, zigzag, plucking shape or exasperate external surface, thereby prefabricated form element and the adhesion stress between the Cast-in-place concrete were stronger, thereby can improve the overall performance of superstructure greatly.
Feature of the present invention is that also described polyhedron solid light material members or base plate are provided with align member.Align member can be draw ring, drag hook, iron wire, feet, small lugs, little protruding nail or other device.Like this, after form element is applied in the Cast-in-place Concrete Building Floor, can accurately locate, prevent that phenomenons such as form element floats, displacement from producing when building concrete, simultaneously, also can carry out spacingly, guarantee the pouring quality of superstructure effectively reinforcing bar to form element.
Feature of the present invention is that also described polyhedron solid light material members or base plate are provided with the carrying part of convenient carrying usefulness.The carrying part can be handle, suspension hook, suspension ring or other device.Like this, can very easily form element be piled up, transport, lift and construct, reduce the work difficulty and the working strength of above-mentioned operation, help improving efficiency of construction, reduce construction cost.
Feature of the present invention is that also described polyhedron solid light material members is provided with connector connected to one another between the polyhedron solid light material members.Connector can be reinforcing bar, steel mesh reinforcement, steel wire, gauze wire cloth, angle steel, channel-section steel, L shaped steel, T-steel, cutting ferrule, bolt, male and female groove, socket component, indention, tongue, groove, bayonet socket, cutting ferrule, hole, embedded iron parts etc.Like this, after form element was applied in the Cast-in-place Concrete Building Floor, the connector that is provided with on the form element can be controlled the distance between the form element effectively, reliably, the width and the height of control Cast-in-place concrete rib, the pouring quality of assurance superstructure internal construction; Simultaneously, also help form element connection location each other, perhaps constitute member in groups, accelerate speed of application.
Feature of the present invention also is to connect and compose assembly in groups by connector between described a plurality of polyhedron solid light material members, constitutes the internal-rib die cavity each other.Like this, when form element was applied in the Cast-in-place Concrete Building Floor, Cast-in-place concrete entered in the internal-rib die cavity, had formed the Cast-in-place concrete internal-rib, had improved the mechanical property of superstructure; Simultaneously, form element is connected as one by connector, has constituted form element in groups, thereby, improved the efficiency of construction and the speed of application of superstructure greatly.
Feature of the present invention is also that described a plurality of polyhedron solid light material members is arranged on and constitutes assembly in groups on the same base plate, constitutes the internal-rib die cavity each other.Like this, when form element was applied in the Cast-in-place Concrete Building Floor, base plate had played the effect of alternative construction formwork, had reduced the loss of material, and simultaneously, Cast-in-place concrete enters in the internal-rib die cavity, formed the Cast-in-place concrete internal-rib, had improved the supporting capacity of superstructure greatly.
Feature of the present invention also is to be provided with in the described internal-rib die cavity fixed or movable support draw piece.Like this, when form element was applied in the Cast-in-place Concrete Building Floor, construction was laid more convenient; If the support draw piece is the flexible staybolt draw piece, after form element installs, the dismounting of flexible staybolt draw piece can be reclaimed secondary uses, reduce the cost of production of form element, simultaneously, behind the dismounting support draw piece, reinforcing bar can be laid in the internal-rib die cavity very easily, concrete also can pour in the internal-rib die cavity swimmingly, and it is more convenient to construct, and efficiency of construction is higher.
Feature of the present invention is that also described polyhedron solid light material members is the integral body that is constituted by at least two solid tyre film structural components.Like this, when form element is applied in the Cast-in-place Concrete Building Floor,, can adjust the height or the width of solid tyre die component arbitrarily, use convenient according to different needs.
(4) description of drawings
Fig. 1 is the structural representation of the embodiment of the invention 1.In the accompanying drawing, 1 is polyhedron solid light material members, and 2 is base plate, below in each accompanying drawing, number identically, its explanation is identical.As shown in Figure 1, its polyhedron solid light material members 1 is connected to form integral body with base plate 2.
Fig. 2 is the structural representation of the embodiment of the invention 2, and polyhedron solid light material members 1 is connected to form integral body with base plate 2, and the peripheral side that its base plate 2 stretches out polyhedron solid light material members 1 constitutes bridging piece 3.
Fig. 3 is the structural representation of the embodiment of the invention 3, and polyhedron solid light material members 1 is connected to form integral body with base plate 2, and its polyhedron solid light material members 1 is the expanded pearlite sillar.
Fig. 4 is the structural representation of the embodiment of the invention 4, and polyhedron solid light material members 1 is connected to form integral body with base plate 2, its polyhedron solid light material members 1 external surface all wrapped Cement fibre slurry theca externa 4.
Fig. 5 is the structural representation of the embodiment of the invention 5, and polyhedron solid light material members 1 is connected to form integral body with base plate 2, is provided with reinforce 5 in its polyhedron solid light material members 1, and diagram reinforce 5 is a fleece.
Fig. 6 is the structural representation of the embodiment of the invention 6, and polyhedron solid light material members 1 is connected to form integral body with base plate 2, and the horizontal profile of its polyhedron solid light material members 1 is shaped as polygon.
Fig. 7 is the structural representation of the embodiment of the invention 7, polyhedron solid light material members 1 is connected to form integral body with base plate 2, also is provided with chamfering 7, groove 8, pit 9, hole 10, boss module 11 and external corner 13 on its polyhedron solid light material members 1 simultaneously.
Fig. 8 is the structural representation of the embodiment of the invention 8, polyhedron solid light material members 1 is connected to form integral body with base plate 2, the inner corner trim 6 that is provided with on its polyhedron solid light material members 1, chamfering 7, groove 8 and raised line 12 self or be serial connection, parallel, quadrature or grade separation setting mutually.
Fig. 9 is the structural representation of the embodiment of the invention 9, polyhedron solid light material members 1 is connected to form integral body with base plate 2, also be provided with stiffening rib 14, bracing boom 15 and reinforcing rib 16 simultaneously in its polyhedron solid light material members 1, simultaneously, stiffening rib 14, bracing boom 15 and reinforcing rib 16 have part to be exposed to outside the polyhedron solid light material members 1.
Figure 10 is the structural representation of the embodiment of the invention 10, and polyhedron solid light material members 1 is connected to form integral body with base plate 2, and the external surface of its polyhedron solid light material members 1 is the exasperate external surface.
Figure 11 is the structural representation of the embodiment of the invention 11, and polyhedron solid light material members 1 is connected to form integral body with base plate 2, and its polyhedron solid light material members 1 is provided with a plurality of align members 17, and illustrated position member 17 is for supporting locating piece.
Figure 12 is the structural representation of the embodiment of the invention 12, and polyhedron solid light material members 1 is connected to form integral body with base plate 2, and its polyhedron solid light material members 1 is provided with the carrying part 18 of convenient carrying, and diagram carrying part 18 is a handle.
Figure 13 is the structural representation of the embodiment of the invention 13, polyhedron solid light material members 1 is connected to form integral body with base plate 2, its polyhedron solid light material members 1 is provided with and is used for the connector 19 that polyhedron solid light material members 1 connects each other, and diagram connector 19 is rod member and hole.
Figure 14 is the structural representation of the embodiment of the invention 14, polyhedron solid light material members 1 is connected to form integral body with base plate 2, its a plurality of polyhedron solid light material members 1 constitute assembly in groups under the connection of connector 19, leave spacing between the polyhedron solid light material members 1 and constitute internal-rib die cavity 20.
Figure 15 is the structural representation of the embodiment of the invention 15, polyhedron solid light material members 1 is connected to form integral body with base plate 2, its a plurality of polyhedron solid light material members 1 are arranged on the same base plate 2 and constitute assembly in groups, and polyhedron solid light material members 1 spacing each other constitutes internal-rib die cavity 20.
Figure 16 is the structural representation of the embodiment of the invention 16, polyhedron solid light material members 1 is connected to form integral body with base plate 2, a plurality of polyhedron solid light material members 1 are arranged on the same base plate 2 and constitute assembly in groups, spacing between the polyhedron solid light material members 1 constitutes internal-rib die cavity 20, is provided with support draw piece 21 in its internal-rib die cavity 20.
Figure 17 is the structural representation of the embodiment of the invention 17, and polyhedron solid light material members 1 is connected to form integral body with base plate 2, and its polyhedron solid light material members 1 is the integral body that is constituted by two solid tyre die components 22.
(5) specific embodiment
The present invention is further illustrated below in conjunction with drawings and Examples.
The present invention comprises polyhedron solid light material members 1 as shown in drawings, it is characterized in that also including base plate 2, and polyhedron solid light material members 1 is connected to form integral body with base plate 2.Fig. 1 is the structural representation of the embodiment of the invention 1.In the accompanying drawing, 1 is polyhedron solid light material members, and 2 is base plate, below in each accompanying drawing, number identically, its explanation is identical.As shown in Figure 1, its polyhedron solid light material members 1 is connected to form integral body with base plate 2.
Feature of the present invention is that also base plate 2 stretches out the peripheral side formation bridging piece 3 of polyhedron solid light material members 1.Fig. 2 is the structural representation of the embodiment of the invention 2, and polyhedron solid light material members 1 is connected to form integral body with base plate 2, and the peripheral side that its base plate 2 stretches out polyhedron solid light material members 1 constitutes bridging piece 3.
Feature of the present invention is that also described base plate 2 is cement mortar or cement concrete base plate.As shown in Figure 2, polyhedron solid light material members 1 is connected to form integral body with base plate 2, and its base plate 2 is the cement mortar base plate.
Feature of the present invention also is the foam pellet of described polyhedron solid light material members 1 for foam-plastic blocks, expanded pearlite sillar, expanded vermiculite piece, foaming or aerating concrete piece, haydite concrete piece, straw husk cementitious materials piece, charcoal concrete piece or cementing.Fig. 3 is the structural representation of the embodiment of the invention 3, and polyhedron solid light material members 1 is connected to form integral body with base plate 2, and its polyhedron solid light material members 1 is the expanded pearlite sillar.
Feature of the present invention is that also the external surface of described polyhedron solid light material members 1 is local or has all wrapped cement paste or cement mortar or Cement fibre slurry or Cement fibre net mortar or cement wire mesh mortar or concrete theca externa 4.Fig. 4 is the structural representation of the embodiment of the invention 4, and polyhedron solid light material members 1 is connected to form integral body with base plate 2, its polyhedron solid light material members 1 external surface all wrapped Cement fibre slurry theca externa 4.
Feature of the present invention also is to contain reinforce 5 among described polyhedron solid light material members 1 or base plate 2 or both, perhaps has reinforce 5 to expose.Reinforce 5 is at least a in reinforcing bar, steel wire, presstressed reinforcing steel, steel mesh reinforcement, gauze wire cloth, fiber, fibre bundle, fibrous mesh cloth, nonwoven, metal foil band, porose thin band, strap, the braid over braid.Fig. 5 is the structural representation of the embodiment of the invention 5, and polyhedron solid light material members 1 is connected to form integral body with base plate 2, is provided with reinforce 5 in its polyhedron solid light material members 1, and diagram reinforce 5 is a fleece.
Feature of the present invention is that also the horizontal profile of described polyhedron solid light material members 1 or vertical section are shaped as rectangle, square, polygon, arc angle polygon, chamfering polygon, multi sphere shape, corrugated or circular.Fig. 6 is the structural representation of the embodiment of the invention 6, and polyhedron solid light material members 1 is connected to form integral body with base plate 2, and the horizontal profile of its polyhedron solid light material members 1 is shaped as polygon.
Feature of the present invention is that also described polyhedron solid light material members 1 is provided with at least one in inner corner trim 6, chamfering 7, groove 8, pit 9, hole 10, boss module 11, raised line 12, the external corner 13.Fig. 7 is the structural representation of the embodiment of the invention 7, polyhedron solid light material members 1 is connected to form integral body with base plate 2, also is provided with chamfering 7, groove 8, pit 9, hole 10, boss module 11 and external corner 13 on its polyhedron solid light material members 1 simultaneously.
Feature of the present invention also is described inner corner trim 6, chamfering 7, groove 8, raised line 12 self or is serial connection, parallel, quadrature, oblique or grade separation setting mutually.Fig. 8 is the structural representation of the embodiment of the invention 8, polyhedron solid light material members 1 is connected to form integral body with base plate 2, the inner corner trim 6 that is provided with on its polyhedron solid light material members 1, chamfering 7, groove 8 and raised line 12 self or be serial connection, parallel, quadrature or grade separation setting mutually.
Feature of the present invention also is to be provided with in the described polyhedron solid light material members 1 at least one in stiffening rib 14, bracing boom 15, the reinforcing rib 16, perhaps there be in stiffening rib 14, bracing boom 15, the reinforcing rib 16 at least one to expose outside the polyhedron solid light material members 1, perhaps also have reinforce 5 to expose on stiffening rib 14, bracing boom 15, the reinforcing rib 16.Fig. 9 is the structural representation of the embodiment of the invention 9, polyhedron solid light material members 1 is connected to form integral body with base plate 2, also be provided with stiffening rib 14, bracing boom 15 and reinforcing rib 16 simultaneously in its polyhedron solid light material members 1, simultaneously, stiffening rib 14, bracing boom 15 and reinforcing rib 16 have part to be exposed to outside the polyhedron solid light material members 1.
Feature of the present invention is that also the external surface of described polyhedron solid light material members 1 is corrugated, zigzag, plucking shape or exasperate external surface.Figure 10 is the structural representation of the embodiment of the invention 10, and polyhedron solid light material members 1 is connected to form integral body with base plate 2, and the external surface of its polyhedron solid light material members 1 is the exasperate external surface.
Feature of the present invention is that also described polyhedron solid light material members 1 or base plate 2 are provided with align member 17.Figure 11 is the structural representation of the embodiment of the invention 11, and polyhedron solid light material members 1 is connected to form integral body with base plate 2, and its polyhedron solid light material members 1 is provided with a plurality of align members 17, and illustrated position member 17 is for supporting locating piece.
Feature of the present invention is that also described polyhedron solid light material members 1 or base plate 2 are provided with the carrying part 18 of convenient carrying usefulness.Figure 12 is the structural representation of the embodiment of the invention 12, and polyhedron solid light material members 1 is connected to form integral body with base plate 2, and its polyhedron solid light material members 1 is provided with the carrying part 18 of convenient carrying, and diagram carrying part 18 is a handle.
Feature of the present invention is that also described polyhedron solid light material members 1 is provided with connector 19 connected to one another between the polyhedron solid light material members 1.Figure 13 is the structural representation of the embodiment of the invention 13, polyhedron solid light material members 1 is connected to form integral body with base plate 2, its polyhedron solid light material members 1 is provided with and is used for the connector 19 that polyhedron solid light material members 1 connects each other, and diagram connector 19 is rod member and hole.
Feature of the present invention also is to connect and compose assembly in groups by connector 19 between described a plurality of polyhedron solid light material members 1, constitutes internal-rib die cavity 20 each other.Figure 14 is the structural representation of the embodiment of the invention 14, polyhedron solid light material members 1 is connected to form integral body with base plate 2, its a plurality of polyhedron solid light material members 1 constitute assembly in groups under the connection of connector 19, leave spacing between the polyhedron solid light material members 1 and constitute internal-rib die cavity 20.
Feature of the present invention is also that described a plurality of polyhedron solid light material members 1 is arranged on the same base plate 2 and constitutes assembly in groups, constitutes internal-rib die cavity 20 each other.Figure 15 is the structural representation of the embodiment of the invention 15, polyhedron solid light material members 1 is connected to form integral body with base plate 2, its a plurality of polyhedron solid light material members 1 are arranged on the same base plate 2 and constitute assembly in groups, and polyhedron solid light material members 1 spacing each other constitutes internal-rib die cavity 20.
Feature of the present invention also is to be provided with in the described internal-rib die cavity 20 fixed or movable support draw piece 21.Figure 16 is the structural representation of the embodiment of the invention 16, polyhedron solid light material members 1 is connected to form integral body with base plate 2, a plurality of polyhedron solid light material members 1 are arranged on the same base plate 2 and constitute assembly in groups, spacing between the polyhedron solid light material members 1 constitutes internal-rib die cavity 20, is provided with support draw piece 21 in its internal-rib die cavity 20.
Feature of the present invention is that also described polyhedron solid light material members 1 is the integral body that is constituted by at least two solid tyre film structural components 22.Figure 17 is the structural representation of the embodiment of the invention 17, and polyhedron solid light material members 1 is connected to form integral body with base plate 2, and its polyhedron solid light material members 1 is the integral body that is constituted by two solid tyre die components 22.
During the invention process, mix potting grain concrete light material slurry earlier, be poured in the mould that has been pre-formed ferro-cement base plate 2, maintenance is after stipulate the length of time, and the demoulding promptly gets light tyre moulding member; Perhaps adopt foamed plastics to make polyhedron solid light material members 1, make ferrocement concrete or mortar base plate 2 again, not during setting and harden, polyhedron solid light material members 1 and its bonding are formed integral body at cement concrete or mortar, behind the setting and harden, promptly obtain light tyre moulding member.