US20150322675A1

US20150322675A1 - Construction beam

Info

Publication number: US20150322675A1
Application number: US14/549,072
Authority: US
Inventors: Lung Ching Shih
Original assignee: SUCOOT INDUSTRIAL Co Ltd
Current assignee: SUCOOT INDUSTRIAL Co Ltd
Priority date: 2014-05-09
Filing date: 2014-11-20
Publication date: 2015-11-12
Also published as: DE102014118584A1; GB2526199B; GB2526199A; TWM491702U; AU2015202492A1; SG10201503591YA; GB201506479D0; FR3020825B1; ES2550529R1; KR20150128576A; FR3020825A1; ES2550529A2; JP5944469B2; CN105089265A; KR20180041109A; CA2887970A1; JP2015214880A; ES2550529B1

Abstract

A construction beam includes an elongated main body having two vertical walls, a top wall connected between top edges of the two vertical walls, two bottom walls respectively inward extending from bottom edges of the two vertical walls, and two upright walls upward extending from free edge of the bottom walls by a certain height. Multiple spacer assemblies are disposed between the two vertical walls of the main body to keep the vertical walls spaced from each other by a fixed distance. When mounting wooden bars on the beams, the wooden bars are secured to the main bodies by means of multiple fastening members for laying a moldboard on the wooden bars. Two beams can be axially connected with each other by means of a connection member to elongate the length of the beam.

Description

BACKGROUND OF THE INVENTION

1. Field of the Invention
The present invention relates generally to a construction implement, and more particularly to a construction beam.
2. Description of the Related Art
In construction operation, concrete is grouted to form solid structure of a construction. When grouting in various construction sites, beams are popularly used to support wooden bars for supporting the moldboard as a common construction means. The beams are able to bear the weight or pressure of the concrete.
Most of the conventional beams are wooden beams and metal beams. The wooden beam has a poor structural strength and cannot be recovered. In case of damage, the wooden beam can be only directly discarded without possibility of reuse. This is not a good option in modern times that emphasizes environmental protection.
The conventional metal beam has a quite simple cross-sectional structure. Therefore, the metal beam can only bear limited pressure. In case of greater application force, the beam is often deformed or laterally bent. Therefore, the conventional metal beam can hardly bear greater action force.
Moreover, the grouting moldboard is supported by the wooden bars, which are supported by the beams. However, neither the wooden beams nor the metal beams are designed with structure for fixing the wooden bars. In case of stronger grouting intensity, the wooden bars often displace from their home positions due to shock or even drop down from the beams. Under such circumstance, the moldboard will break apart and the concrete will fall to cause danger. Beside, the conventional beam has a fixed length and lacks any suitable design for connecting the beams into a longer length. In the case that the grouting area exceeds the length of the beam, many workers often randomly set the beams. As a result, the beams will intersect each other to asymmetrically support the moldboard. This will cause uneven supporting force for the respective parts of the moldboard. Therefore, it has become a critical issue how to provide a design for fixing the wooden bars and connecting the beams with each other.

SUMMARY OF THE INVENTION

It is therefore a primary object of the present invention to provide a construction beam, which has higher force bearing strength and is more solid and durable.
It is a further object of the present invention to provide a construction beam. When mounting wooden bars on the beams, the wooden bars can be secured to the main bodies by means of multiple fastening members for laying a moldboard on the wooden bars.
It is still a further object of the present invention to provide a construction beam. Two beams can be axially connected with each other by means of a connection member to form a support beam with longer length in accordance with the grouting area.
The construction beam of the present invention includes:
a main body, which is an elongated body having uniform cross-sectional shape, the main body including two vertical walls, a top wall transversely connected between top edges of the two vertical walls, two bottom walls inward horizontally extending from bottom edges of the two vertical walls, and two upright walls upward extending from free edge of the bottom walls by a certain height; and
multiple spacer assemblies disposed between the two vertical walls of the main body, two ends of each spacer assembly abutting against the two vertical walls to keep the two vertical walls spaced from each other by a fixed distance.
In the above beam, the multiple spacer assemblies are disposed between the two vertical walls of the main body to restrict the two vertical walls and keep the two vertical walls spaced from each other by a fixed distance. Accordingly, when a force is applied to the vertical walls, the vertical walls are prevented from contracting or deforming.
Multiple perforations formed through the two vertical walls of the main body the above beam; a connection bolt member is passed through the perforations of the two vertical walls to connect the main body with a fastening member for fixing wooden bars. Accordingly, the wooden bars are prevented from swinging to provide a support for the moldboard and facilitate construction work.
One end of the beam is connectable with one end of a connection member by means of at least one threaded assembly. The other end of the connection member is connected with another beam to axially connect the beams to form a support beam with a necessary length in accordance with the grouting area in construction work for supporting the moldboard. Multiple support beams can be regularly arranged to uniformly support every part of the moldboard.
The present invention can be best understood through the following description and accompanying drawings, wherein:

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view of a first embodiment of the present invention;

FIG. 2 is a perspective exploded view of the first embodiment of the present invention according to FIG. 1;

FIG. 3A is a sectional view taken along line 3-3 of FIG. 1;

FIG. 3B is a sectional view of the first embodiment of the present invention in another aspect;

FIGS. 4A and 4B are perspective views of the fastening member of the present invention;

FIG. 5 is a perspective view showing that the fastening members are connected with the beam of the present invention;

FIG. 6 is a perspective view showing that the wooden bars are mounted on the beams of the present invention;

FIG. 7 is a front view according to FIG. 6;

FIG. 8 is a perspective view showing that two beams of the present invention are to be connected by a connection member;

FIG. 9 is a perspective view showing that two beams of the present invention are connected by the connection member;

FIG. 10 is a sectional view taken along line 10-10 of FIG. 9;

FIG. 11 is a perspective view showing that two beams of the present invention are axially connected by the connection member;

FIG. 12 is a sectional view of a second embodiment of the construction beam of the present invention;

FIG. 13 is a comparison curve diagram between the construction beam of the present invention and four conventional construction beams; and

FIG. 14 is a comparison table between the beam of the present invention and four conventional construction beams.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Please refer to FIGS. 1 to 3, which show a first embodiment of the construction beam 10 of the present invention. The construction beam 10 includes a main body 20, which is an elongated metal-made body. The main body 20 has uniform cross-sectional shape. The main body 20 includes two vertical walls 21 side by side arranged at a certain interval in parallel to each other, a top wall 22 transversely connected between top edges of the two vertical walls 21, and two bottom walls 23 inward horizontally extending from bottom edges of the two vertical walls 21. Each bottom wall 23 has a free edge. An upright wall 24 upward extends from the free edge of the bottom wall 23 by a certain height. Multiple perforations 25 are formed through the two vertical walls 21 and arranged in a longitudinal direction of the main body 20 at equal intervals near the top edges of the vertical walls 21. At least two connection holes 27 are formed through the two vertical walls 21 near two ends of the main body 20 respectively. Each end of the main body 20 is formed with two connection holes 27 arranged in the longitudinal direction of the main body 20. A predetermined number of reinforcement sections 211, which are recessed/raised sections formed by punching, are disposed on the two vertical walls 21. A hole is formed at the center of each reinforcement section 211. Multiple through holes 28 are formed through the two vertical walls 21.
The vertical wall 21, the bottom wall 23 and the upright wall 24 on the same side of the main body 20 define therebetween a receiving space 26.
Multiple spacer assemblies 30 are disposed in the main body 20 at equal intervals. In this embodiment, there are four spacer assemblies 30. Each spacer assembly 30 is composed of a spacer member 31 and a restriction assembly. The spacer member 31 is a tubular body having a passage 32. The spacer member 31 is disposed in the main body 20 with two ends in abutment against inner faces of the two vertical walls 21 as shown in FIG. 3A. The passage 32 is aligned with one through hole 28 of the main body. In this embodiment, the restriction assembly is a threaded assembly including a bolt 36 and a nut 37. The rod body of the bolt 36 extends through the through holes 28 of the two vertical walls 21 and the passage 32 of the spacer member 31 to screw with the nut 37. Accordingly, the spacer member 31 is secured between the two vertical walls 21. Please refer to FIG. 3A. Two ends of the spacer member 31 serve as two inner abutment sections 33 of the restriction assembly to abut against the inner faces of the two vertical walls 21 respectively. The head section of the bolt 36 and the nut 37 serve as two outer abutment sections 34 of the restriction assembly to abut against outer faces of the two vertical walls 21 respectively. Accordingly, the two vertical walls are kept spaced from each other by a fixed distance without being biased toward each other or outward expanded, whereby the rigidity and strength of the main body can be maintained.
It should be noted that each restriction assembly can be alternatively a rivet 38 as shown in FIG. 3B. The rivet 38 passes through the through holes 28 of the two vertical walls 21 and the passage 32 of the spacer member 31. Two ends of the rivet 38 serve as the outer abutment sections 34 to abut against the outer faces of the two vertical walls 21, whereby the two vertical walls 21 are kept spaced from each other by a fixed distance.
Please now refer to FIGS. 4 and 5. The present invention further includes at least one fastening member 40 having a board body 41, two upright walls 43 and two protrusion walls 45. The board body 41 has a rectangular shape with four lateral sides 42. The two upright walls 43 are disposed on a pair of lateral sides 42 of the board body 41 in parallel to each other and upward extend therefrom. The two protrusion walls 45 are disposed on the other pair of lateral sides 42 of the board body 41 and downward extend therefrom. The board body 41 and the two upright walls 43 define a receiving space 47. The fastening member 40 is bridged over the beam 10 with the board body 20 in contact with the top wall 22 and the two protrusion walls 45 in contact with the two vertical walls 21 of the main body 20 respectively. A connection bolt member 48 is passed through the securing holes 46 of the two protrusion walls 45 and the perforations 25 of the two vertical walls 21. One end of the connection bolt member 48 has a stopper section 481, while the other end of the connection bolt member 48 is pivotally connected with a stopper member 482. After the connection bolt member 48 is passed through the two protrusion walls 45 and the two vertical walls 21, the stopper member 482 will naturally rotate downward to suspend from the connection bolt member 48 as shown in FIG. 4A. Under such circumstance, the connection bolt member 48 is hindered from detaching from the fastening member. Accordingly, the fastening member 40 is connected with the beam 10 by means of the connection bolt member 48.
FIG. 6 shows the use of this embodiment of the present invention. Multiple beams 10 are side by side arranged in parallel to each other at intervals. Several fastening members 40 are mounted on the beams. Multiple wooden bars 70 are bridged over the beams 10 and positioned in the receiving spaces 47 of the fastening members 40. A fixing member 49 is passed through the fixing holes 44 of the upright walls 43 of the fastening member (as shown in FIG. 4) to fix the wooden bar 70. The fixing member 49 can be a bolt, a self-tapping screw, a nail or the like that can fix or connect articles. After the wooden bars 70 are connected with the fastening members 40, a moldboard 71 is placed on the wooden bars 70 as shown in FIG. 7. Referring to FIG. 7, when grouting, the concrete is poured from the upper side of the moldboard 71 to uniformly put the weight of the concrete on the moldboard 71. The moldboard 71 spreads the weight to every wooden bar 70. The wooden bars 70 then further spread the weight to the respective beams 10. The wooden bars 70 are fixed by the fastening members 40 so that the wooden bars 70 will not randomly displace due to impact of the concrete. Therefore, the wooden bars 70 keep having higher force bearing strength. The vertical walls 21 and the upright walls 24 of the beams 10 are right directed in the weight direction of the concrete so that the beams are able to bear the weight. The spacer members 31 mounted between the two vertical walls 21 of the beam 10 also provide an effect. Two ends of the spacer member 31 serve as the inner abutment sections 33 for supporting the vertical walls 21 and keeping the vertical walls 21 spaced from each other by a fixed distance without inward contracting. The outer abutment sections 34 of the restriction assembly, (that is, the head section of the bolt 36 and the nut 37), abut against the outer faces of the two vertical walls 21 to restrict the vertical walls 21 from outward expanding or deforming. Therefore, the two vertical walls 21 are kept spaced from each other by a fixed distance to ensure the structural strength of the beams 10. Moreover, the reinforcement sections 211 of the beam 10 serve to increase the strength of the beam. The two vertical walls 21 and the two upright walls 24 of the beam stand opposite to each other and are directed in the pressure direction of the concrete. Therefore, the structural strength of the beams 10 is increased and the beams 10 are able to bear greater forward pressure.
In case of larger grouting area and insufficient length of the beams 10, the present invention provides a connection member 50 as shown in FIG. 8 to axially connect two beams 10. Accordingly, the beams can be assembled to elongate the beam to a length sufficient for supporting the moldboard. Moreover, the force bearing strength of the two beams 10 can be increased.
Please refer to FIG. 8. The components of the construction beam 10 are identical to those of the first embodiment and thus will not be repeatedly described hereinafter. The same components are denoted with the same reference numerals.
The connection member 50 is a metal member including a main body 51, which is a hollow elongated body with uniform cross-sectional shape such as rectangular shape. Four apertures 53 are transversely formed through two lateral walls 52 of the main body 51 near two ends of the main body 51 respectively. The apertures 53 are arranged in a longitudinal direction of the main body 51.
Two connection components 55 are fixedly connected with the main body 51. Each connection component 55 has a substantially U-shaped cross section. The connection component 55 includes two vertical leg sections 56 side by side arranged at a certain interval in parallel to each other and a top board 57 transversely connected between top edges of the two leg sections 56. The top board 57 of the connection component 55 is fixedly connected with the bottom wall 54 of the main body 51. The two leg sections 56 are formed under the bottom of the main body 51.
Four threaded assemblies 60 are also provided. Each threaded assembly 60 includes a bolt 62 and a nut 64.
Please refer to FIGS. 9 to 11. When axially connecting the two beams 10, one end of each beam 10 is fitted onto one end of the connection member 50. The two leg sections 56 of the connection component 55 are respectively received in the two receiving spaces 26. The connection holes 27 of one end of each beam 10 are aligned with the apertures 53 of one end of the connection member 50. Then, the bolts 62 of the four threaded assemblies 60 are respectively passed through the connection holes 27 of the beam 10 and the apertures 53 of the connection member 50 to screw with the nuts 64. Accordingly, the two beams 10 are securely connected with the connection member 50.
The connection member 50 can be used to axially securely connect at least two beams 10. Preferably, the two leg sections 56 abut against the bottom walls 23 of the main body 20 as shown in FIG. 10. Also, the top end of the connection member 50 abuts against the top wall 22 of the main body 20, whereby the connection member 50 also serves to increase the force bearing strength of the main body 20 and enhance the supporting effect of the beam 10 for the moldboard.
After two or more beams 10 are axially connected, more wooden bars 70 can be fixed on the beams 10 by means of multiple fastening members 40 for supporting a longer moldboard.
FIG. 12 shows a second embodiment of the construction beam 10 of the present invention. The same components are denoted with the same reference numerals. In this embodiment, the spacer assembly 30 is an elongated (tubular or cylindrical) spacer member 39 passing through the through holes 28 of the two vertical walls 21 of the main body 20. The circumference of each of two ends of the spacer member 39 is formed with an inner abutment flange 33 and an outer abutment flange 34. The inner and outer abutment flanges 33, 34 respectively abut against the inner and outer faces of the two vertical walls 21 to keep the two vertical walls 21 spaced from each other by a fixed distance and ensure that the beam has sufficient strength.
The construction beam of the present invention is advantageous over other construction beams on the current market. The beam of the present invention is compared with the other four conventional beams A, B, C, D in bending moment and performance per unit price as follows:
FIG. 13 is a comparison diagram between the present invention and the four conventional beams. The thicker the floorboard to be grouted is, the shorter the distance between the arranged beams is. A larger bending moment of the beam means a greater force bearing strength of the beam. In this case, the beam is more unlikely to break. Therefore, a beam with larger bending moment is able to bear greater load and the distance between the arranged beams is also longer. The bending moment M is calculated by yield strength (Fy) multiplying section modulus (Z).
Please also refer to FIG. 14. The preferred embodiment of the construction beam (abbreviated as top beam) of the present invention is made of Q390 steel material with a yield strength (Fy) of 4000 kgf/cm²and a section modulus (Z) of 26.2 cm³. Accordingly, the bending moment (M) of the beam of the present invention can be calculated to be 4000×26.2=104800 kgf-cm. The weight of the beam of the present invention is 6 kg/m. The price per kilogram is NT$ (as hereinafter) 45 dollars/kg. Therefore, the performance of the beam of the present invention per unit price is 104800/(6 kg/m*45 dollars/kg)=388.15 kgf-cm/dollar.
Beam A (EFCO E-beam) has a trapezoidal cross section. The yield strength (Fy) of beam A is 3600 kgf/cm²and the section modulus (Z) of beam A is 28.6 cm³. Accordingly, the bending moment (M) of beam A can be calculated to be 3600×28.6=102960 kgf-cm. The weight of beam A is 5.5 kg/m. The price per kilogram is 106.7 dollars/kg. Therefore, the performance of beam A per unit price is 102960/(5.5 kg/m*106.7 dollars/kg)=175.40 kgf-cm/dollar.
Beam B (lightweight channeled steel, two pieces) is an I-beam. The yield strength (Fy) of beam B is 2500 kgf/cm²and the section modulus (Z) of beam B is 33.6 cm³. Accordingly, the bending moment (M) of beam B can be calculated to be 2500×33.6=84000 kgf-cm. The weight of beam B is 8.2 kg/m. The price per kilogram is 28 dollars/kg. Therefore, the performance of beam B per unit price is 84000/(8.2 kg/m*28 dollars/kg)=365.85 kgf-cm/dollar.
Beam C (H20 wooden beam) is a wooden beam. Through test, the bending moment of beam C is found to be 50968 kgf-cm. The weight of beam C is 4.7 kg/m. The price per kilogram is 83 dollars/kg. Therefore, the performance of beam C per unit price is 50968/(4.7 kg/m*83 dollars/kg)=130.65 kgf-cm/dollar.
Beam D (lightweight channeled steel, one piece) is a C-beam. The yield strength (Fy) of beam D is 2500 kgf/cm²and the section modulus (Z) of beam D is 16.8 cm³. Accordingly, the bending moment (M) of beam D can be calculated to be 2500×16.8=42000 kgf-cm. The weight of beam D is 4.1 kg/m. The price per kilogram is 28 dollars/kg. Therefore, the performance of beam D per unit price is 42000/(4.1 kg/m*28 dollars/kg)=365.85 kgf-cm/dollar.
Accordingly, it can be found through the comparison between the bending moment (M) of various beams that the beam (top beam) of the present invention>beam A (EFCO E-beam)>beam B (lightweight channeled steel, two pieces)>beam C (H20 wooden beam)>beam D (lightweight channeled steel, one piece). The bending moment of the beam of the present invention is the best one. In other words, the beam of the present invention has a greatest force bearing strength for bearing highest action force. Please further refer to the comparison diagram between the performances of the beams per unit price. In sequence, the beam (top beam) of the present invention>beam B (lightweight channeled steel, two pieces)=beam D (lightweight channeled steel, one piece)>beam A (EFCO E-beam)>beam C (H20 wooden beam). The beam of the present invention still has a highest performance. This means the beam of the present invention can provide better supporting force at the same cost. Moreover, the price per kilogram of the beam of the present invention is even less than one half of the price of beam A with the second best bending moment. This means the same money can only buy one beam A, while two beams of the present invention. The assembly of two side by side arranged beams of the present invention can achieve a bending moment much higher than the bending moment of beam A. However, the price is still less than the price of one beam A. Therefore, the beam of the present invention not only has a solid structure, but also is quite advantageous over the conventional beams in cost-performance ratio.
Furthermore, according to statistics, the average bearable carriage weight of a human at one time is not over 25 kg. In the present invention, even if three beams are assembled into a longer beam, the weight of the assembly including the weight of the connection members is not over 23 kg. This value is lower than the average bearable carriage weight of a human. Therefore, even a thinner and shorter person can carry the beams. Therefore, the beam of the present invention has the advantages of better structural strength, higher cost-performance ratio and lightweight. Also, the beam of the present invention is easy to carry without causing heavy burden to construction workers.
The above embodiments are only used to illustrate the present invention, not intended to limit the scope thereof. Many modifications of the above embodiments can be made without departing from the spirit of the present invention.

Claims

What is claimed is:

1. A construction beam, which is an elongated body, comprising:

a main body, which is an elongated body having uniform cross-sectional shape, the main body including two vertical walls side by side arranged at a certain interval in parallel to each other; a top wall transversely connected between top edges of the two vertical walls; two bottom walls inward horizontally extending from bottom edges of the two vertical walls, and two upright walls upward extending from free edge of the bottom walls by a certain height;

multiple through holes formed through the two vertical walls of the main body; and

multiple spacer assemblies passing through the through holes of the two vertical walls of the main body, each of two ends of each spacer assembly being formed with an inner abutment section and an outer abutment section, the two inner abutment sections of the spacer assembly respectively abutting against inner faces of the two vertical walls, while the two outer abutment sections of the spacer assembly respectively abutting against outer faces of the two vertical walls.

2. The beam as claimed in claim 1, wherein each spacer assembly is an elongated spacer member, the two inner and two outer abutment sections being respectively formed at two ends of the spacer member.

3. The beam as claimed in claim 1, wherein each spacer assembly includes a spacer member and a restriction assembly, the spacer member being a tubular body having a passage; the restriction assembly having two ends and being passed through the through holes of the two vertical walls and the passage of the spacer member, two ends of the spacer member serving as the two inner abutment sections; two ends of the restriction assembly serving as the two outer abutment sections.

4. The beam as claimed in claim 3, wherein the restriction assembly is composed of a bolt and a nut, the bolt having a head section, the head section of the bolt and the nut serving as the two outer abutment sections.

5. The beam as claimed in claim 3, wherein the restriction assembly is a rivet, two ends of the rivet serving as the two outer abutment sections.

6. The beam as claimed in claim 1, wherein multiple perforations are formed through the two vertical walls of the main body, the perforations are arranged in a longitudinal direction of the main body at equal intervals and near the top edges of the vertical walls.

7. The beam as claimed in claim 1, wherein:

multiple perforations are formed through the two vertical walls of the main body and arranged in a longitudinal direction of the main body; and further comprising:

a fastening member having a board body, two upright walls and two protrusion walls, the board body having at least four lateral sides, the two upright walls being disposed on a pair of lateral sides of the board body and upward extending from the board body, the board body and the two upright walls defining a receiving space; the two protrusion walls being disposed on the other pair of lateral sides of the board body and downward extending from the board body, each protrusion wall having at least one securing holes; the fastening member being disposed on the top wall of the main body; at least one connection bolt member being passed through the securing holes of the two protrusion walls of the fastening member and the perforations of the two vertical walls of the main body to connect the fastening member with the main body.

8. The beam as claimed in claim 1, wherein the vertical wall, the bottom wall and the upright wall on the same side of the main body define therebetween a receiving space; the beam further comprising a connection member including a main body, which is a hollow elongated body and two vertical leg sections disposed under a bottom face of the main body; one end of the connection member extending into the main body of the beam with the two leg sections positioned in the two receiving spaces.

9. The beam as claimed in claim 2, wherein the vertical wall, the bottom wall and the upright wall on the same side of the main body define therebetween a receiving space; the beam further comprising a connection member including a main body, which is a hollow elongated body and two vertical leg sections disposed under a bottom face of the main body; one end of the connection member extending into the main body of the beam with the two leg sections positioned in the two receiving spaces.

10. The beam as claimed in claim 3, wherein the vertical wall, the bottom wall and the upright wall on the same side of the main body define therebetween a receiving space; the beam further comprising a connection member including a main body, which is a hollow elongated body and two vertical leg sections disposed under a bottom face of the main body; one end of the connection member extending into the main body of the beam with the two leg sections positioned in the two receiving spaces.

11. The beam as claimed in claim 7, wherein the vertical wall, the bottom wall and the upright wall on the same side of the main body define therebetween a receiving space; the beam further comprising a connection member including a main body, which is a hollow elongated body and two vertical leg sections disposed under a bottom face of the main body; one end of the connection member extending into the main body of the beam with the two leg sections positioned in the two receiving spaces.

12. The beam as claimed in claim 1, wherein:

at least two connection holes are formed through the two vertical walls of the main body and near two ends of the main body respectively; and

the vertical wall, the bottom wall and the upright wall on the same side of the main body define therebetween a receiving space; the beam further comprising a connection member including a main body, which is a hollow elongated body and at least one connection component having two vertical leg sections and a top board connected between the two leg sections; the connection component being fixedly disposed under a bottom face of the main body; at least two apertures being transversely formed through two lateral walls of the connection member and near two ends of the connection member respectively; one end of the connection member extending into the main body of the beam; at least one threaded assembly being passed through the apertures of one end of the connection member and the connection holes of one end of the main body of the beam to connect the connection member with the main body.

13. The beam as claimed in claim 2, wherein:

14. The beam as claimed in claim 3, wherein:

15. The beam as claimed in claim 7, wherein:

16. The beam as claimed in claim 12, wherein the apertures of the connection member are formed through the main body of the connection member.