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(11) Patent Number: KE 438

(45) Date of grant: 28/04/2011
 
(51) Int.CL8:  E04H5/02

(ll)Application Number: KlVP/2009/000885

(22) Filing Date: 27/03/2009

(30) Priority data:
 
(73)0wner: TKM MAESTRO LIMITED of P.O. BOX 9697-00100, NAlROBI., Kenya

(72)    Inventor: DR ANTHONY STEVEN NYARANGI MONDA of  KILELESHWA, SUITE 23, GATUNDU ROAD, P.O. BOX 9697-00100, NAlROBI, Kenya

(74) Agent/address for corresPondence: MUGAMBIMUNGANIA & CO. ADVOCATES, P. 0. BOX 1567-00100, NAlROBI

(54)Title: TELECOMMUNICATION TOWER STRUCTURE AND A METHOD FOR ITS DEPLOYMENT ON SITE

(57) Abstract:  The invention relates to a structure (10) for a telecommunication network comprising of a shelter (20) capable of carrying a telecommunication tower (15) wherein the shelter (20) is constructed and arranged below the tower (15) so as to house telecommunication equipment or the like. The invention also relates to a method of deploying such a structure on a site which method involves minimal preparation of the site prior to assembling the structure from prefabricated elements transported to the site.
 
TELECOMMUNICATION TOWER STRUCTURE AND A METHOD FOR ITS

DEPLOYMENT ON SITE


FIELD OF THE INVENTION

5

The present invention relates in general to a telecommunication structure and, in particular, to a shelter constructed to support a tower in a telecommunication site in which the telecommunication equipment is located within the shelter positioned below the tower. The invention also relates to a method of deploying such a structure on a site.

10

BACKGROUND OF THE INVENTION


Wireless telecom networks, and especially cellular telephone networks or the like, use a large number of unmanned sites. Typically a site employs a tower which supports various antennae

15    at required heights above the ground, and in most cases at least one shelter, which is usually a small room serving as an enclosure for the electronic equipment.

Presently the method for constructing such sites involve east-on-site concrete methods, of which wireless network operators build such sites under fast roll-out constraints. Consequently,

20    solutions which employ prefabricated elements instead of east-on-site concrete elements would provide advantages to network operators, because it would enable more rapid construction in a much small space.

More importantly,  in the vast majority of sites  built to date, the tower and the equipment

25    shelter are totally separated from each other. A common construction method involves erecting the tower on the ground and building a separate structure next to the tower for housing the electronic equipment. The site is then surrounded by a concrete wall to protect the tower and the equipment housed in the separate structure.

30    Accordingly, there is need for a rapidly deployable structure for a telecommunication tower, and a structure that occupies less ground space. It is also desirable to have a structure that can be build in minimal time than what is presently the standard.
 

SUMMARY OF THE INVENTION

A tower structure is described herein that uses a design that in one aspect reduces the amount of space occupied by the entire structure. While the method adopted to erect the structure

5    reduces the time taken to construct the structure also allows the telecommunication equipment to be located within the shelter constructed below the tower.

In one embodiment of the invention there is disclosed a structure for a telecommunication

network comprising of a shelter that is  designed to hoist a telecommunication tower.  The

10    shelter is constructed below the tower so that the shelter is used to house telecommunication equipment or other equipment for the telecommunication network.

In another embodiment if the invention the structure is constructed from prefabricated metal

pieces that can be largely  assembled on the site to reduce the time taken to  construct the

15    structure. The shelter is assembled from fabricated steel elements. The assembled steel elements form a frame work or an enclosure which is then covered with cladding panels along the sides of the enclosure. In order to secure the site from intrusion, the shelter is also provided with a roof thereof to cover the top of the enclosure. The roof of the shelter from where the tower is hoisted is provided with means to anchor the tower on top of the roof

20

Higb strength beams are mounted on the roof of the shelter and they provide the means by which the tower is mounted on to the roof of the shelter. The beams are adjustably mounted on the roof of the shelter to allow towers of varying leg configurations to be anchored to the roof of the shelter. For example the beams are adjustable to allow a four or three leg tower to be

25    anchored to the roof of the shelter.

In a preferred method of construction the various metal elements of the structure are fabricated

off site and then transported to the site for assembly. The foundation where the structure is

mounted on is preferably made of concrete slabs that are also made off site. At the time of

30    construction the concrete slab panels are fitted with hooks for easy loading with cranes onto transportation trucks.

Generally this mode of construction allows for rapid deployment of the structure as only minimal site preparations are needed. Accordingly site preparation will be in a way limited to
 
clearing and excavating the site to a level below the grmmd and screeding of the excavated site to allow for lying of the concrete slabs. In comparison with the on site concrete construction the time taken to complete constructing the structure of the present invention is also reduced.

5    Overall, a structure constructed in accordance with the present invention has a number of advantages over the existing structures. The time taken to complete construction of the site is reduced. For example it is possible to construct a structure of the present invention within 17 days which gives about 40% reduction in the time taken to construct an onsite concrete structure. The structure also saves the space occupied by about 40%. Because the tower is

10    hoisted on the shelter, there is a reduction of about 3 meters in the height of the tower compared to if the tower was mounted on the ground. The structure is removable from the site and it can be relocated to another site in a relatively short period because the wet concrete works are eliminated. There is also less cable used due to compact site

design.


BRIEF DESCRIPTION OF THE DRAWINGS

Fig 1 is a schematic isometric view of a telecommunication structure showing a tower mounted

5    on a shelter as constructed in accordance with an embodiment of the present invention; Fig 2 is a top plan view of the structure ofFig.1;

Fig 3 is a schematic isometric view of a the shelter for hoisting the tower constructed in accordance with one embodiment of the present invention;

Fig 4 is a front view of a framework of constructing the shelter of figure 2 from elevation angle

10    1;

Fig 5 is a back view of a framework of constructing the shelter of figure 2 from elevation angle

2;

Fig 6 is a side view of a framework of constructing the shelter of figure 2 from elevation angle

3;

15    Fig 7 is another front view of the shelter with cladding panels on the outside of the shelter framework;

Fig 8 is another back view of the shelter with cladding panels on the outside of the shelter framework;
Fig 9 is another side view of the shelter with cladding panels on the outside of the shelter

20    framework;

Fig 10 is an illustration of a preferred embodiment of a cladding panel of the shelter; Fig 11 is an illustration of another embodiment of a cladding panel.

Fig 12 is a top plan view of the foundation of the shelter;

Fig 13 is a plan view of the shelter showing the arrangement of the telecommunication

25    equipment housed therein;

Fig 14 is a top plan view of the roof of the shelter;

Fig 15 is an illustration of a roof panel of the shelter of claim 14.



30    DETAILED DESCRIPTION OF THE INVENTION


The present invention, as well as some preferred embodiments may be understood and appreciated from the following detailed description made in conjunction with the drawings.

Referring  to  the  drawings  especially  fig  1  and  2,  there  is  shown  a  structure  (10)  for  a

telecommunication network constructed in accordance with a first embodiment of the present

invention.  The  structure comprises  of a shelter (20) constructed below a tower (15).   The

shelter is  constructed to  hoist a telecommunication tower (15) above it so  as to  allow the

5    shelter (20) below the tower (15) to be utilized for housing telecommunication equipment or other like equipment.

The structure (10) is constructed from prefabricated metal elements that can be fundamentally

assembled on the site to reduce the time taken to construct the structure. The metal elements

10    forming the shelter are preferably fabricated from steel which when assembled as shown in fig 4 to 6 form a frame work or an enclosure which is then covered with a plurality of cladding panels ( 60) along the sides of the enclosure.

As illustrated in fig 4 to 6 the metallic framework generally comprises of a plurality of vertical

15    columns (22) extending from a concrete foundation panels (40) to engage the roof frames (24). The shelter is formed of a composite metal frame work capable of supporting the tower (15) against critical wind loading conditions.

As shown in fig 3 and  10, the side claddings panels (60) are preferably made of solid metal

20    panels to afford security of the site. It is also another aspect of the present invention as shown in Fig 11, to provide a structure where the side claddings panels (60) comprise a lower part
(66)    and an upper part (64) where the lower part (66) is has perforations (62). Such perforations allow ventilation of the shelter (20). However a structure with such perforations

may  be  restricted to  places  with adequate security for the  site;  otherwise  in places  where

25    security may not be adequate the solid panels are preferred.


In order to mount the tower on top of the shelter there is provided a plurality of beams transversely (25, 26, 28, 30) mounted on the roof of the shelter. Generally there are two types of beams mounted on the roof of the shelter, primary beams (25, 26) on to which the legs of the

30    tower are anchored and secondary beams (28,30) which are interposed on the roof to support the primary beams (25,26) . It is necessary for the tower to have a strong base support because the tower is a massive structure extending up to 45 metres above the ground and if it is not well supported it may collapse due to the total weight of the structure.
 
In a preferred embodiment of the present invention the roof (96) is fitted with at least two primary beams (25, 26) and two secondary beams (28, 30). The towers (15) are secured to the primary beams (25, 26) by anchor bolts. The bolts run from a top plate through to a bottom plate, all welded securely to the beams along various positions on the beams.

5

The structure of the present invention is also constructed in manner that allows it to hoist towers of varying leg configuration. This is because the primary beams (25, 26) are adjustably mounted on the roof of the shelter to allow the beams (25, 26) to be shifted and secured along the roof to allow towers of varying leg configurations to be anchored to the roof of the shelter.

1 0 In this way the shelter is able to hoist a three or four legged tower. Additionally for a shelter with two beams (25, 26) it is possible to adjust only one beam to allow either a four or three legged tower to be anchored to the roof of the shelter. As shown in fig 2 the beams are provided with a plurality of recesses (23) to allow the tower (15) to be bolted along the length of the primary beams (26).

15

In order to secure the structure from unwelcome intrusion, the shelter is also provided, as shown in fig 14 and 15, with a roof(96) thereof to cover the top of the enclosure. The covering comprises of a plurality of panels (98). As shown in fig 15 the panels (98) may optionally be perforated for ventilation of the enclosed structure. For the purpose of climbing to the tower

20    (15) to install equipment for the teleconununication network, the roof is also provided with means for accessing the tower (15) from within the shelter (20). Such means for accessing the tower (15) include a climbing ladder and an access door (94) fitted onto the roof of the shelter. For security purposes and in order to prevent access from the roof of the shelter the access door

(94)    is only openable from inside the shelter (20) and the ladder for accessing the tower (15) is

25    stored inside the shelter (20).


To prevent unauthorized entry to the inside of the structure, the shelter (20) is fitted, as shown of fig 13, with a gate (50) on the front part of the shelter (20) which is adequately secured. The gate is a steel box panel, rigid enough when locked to prevent entry to site. With

30    reference to fig 14, if the structure erected in a place where security is a problem, the shelter (20) can be fitted with an electric fence (92) along the top of the roof to protect against unwarranted access to the shelter (20) from the top.
 

The shelter (20) is mounted on a foundation (40) comprising of a plurality of concrete slab panels (74, 76), where the concrete slab panels (74, 76) are preferably reinforced for additional strength. The concrete slab panels (74, 76) are preferably made offsite and transported to the site of the structure ready for assembly on a site. By making the slabs offsite, this method of

5    construction allows the structure to be completed much faster than a structure of concrete walls made on the site. For purposes of transporting the slabs to the site the concrete slab panels are preferably fitted with in-situ hooks for easy loading with cranes onto transportation trucks.

In another embodiment of the invention there is provided a method of deploying the structure

10    of the present invention on a site. The method involves first preparing the site at which the structure is to be deployed. The preparation includes clearing and excavating the site to a level below the ground, and screeding of the excavated site in preparation for laying the concrete

slabs. The prefabricated materials including the concrete slabs are then transported to the site. The site preparation process further involves laying of the concrete slab panels on the freshly

15    excavated site. The site is then backfilled with compacted material over the slabs to the ground level.


The shelter is then assembled on the concrete slab foundation, which essentially requires bolting of the various elements onto the concrete slab foundation and assembling the fabricated

20    metallic frame work. The metal framework of the shelter is then covered with cladding panels along the sides and the roof is fitted to cover the top of the enclosure. The tower is then erected on top of the roof which is fitted with means to anchor the tower. The tower (15) is anchored to the roof of the shelter (20) by bolting the legs of the tower (15) to the primary beams (25,26) which are transversely mounted on the roof of the shelter by means of anchor bolts.

25

After the structure is complete the telecommunication equipment is installed inside the shelter (20). The installed equipment comprises at least a generator (86) and fuel tank (84) and in order to minimize transfer of vibration to the other equipment each of the equipment is mounted on its own pre-cast concrete slab panel.

30

Additional the structure is fitted with security means including alarms, motion detectors, lighting and motion activated lights to monitor any unauthorized movement or entry into the structure.
 

Those skilled in the art will herein are contemplated by embodiments, but should be


appreciate that variations from the specific the invention. The invention should not be measured by the followings claims.
 

embodiments disclosed restricted to the above
 
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Abstract

The invention relates to a structure (10) for a telecommunication network comprising of a shelter (20) capable of carrying a telecommunication tower {15) wherein the shelter (20) is constructed and arranged below the tower {15) so as to house telecommunication equipment or the like. The invention also relates to a method of deploying such a structure on a site which method involves minimal preparation of the site prior to assembling the structure from prefabricated elements transported to the site.
 

9

Amended Claims

A structure (10) for a telecommunication network comprising of a shelter (20) capable of carrying a telecommunication tower (15), in which the shelter (20) is constructed and arranged below the tower (15) so as to house telecommunication equipment or the like, characterized in that the shelter (20) comprises of a fabricated enclosure of metallic frame work covered with cladding panels (60) along the sides of the enclosure and with a roof(96) thereof to cover the top of the enclosure wherein the roof(96) is provided with means to anchor the tower (15) to the roof (96) of the shelter (20).

2    A structure according to claim 1, wherein the side claddings panels (60) are solid metal panels.

3    A structure according to claim 1, in which the side claddings panels (60) may further comprise a lower part (66) and an upper part (64) wherein the lower part

(66)    is provided with perforations (62) to allow ventilation of the shelter (20).


4    A structure according to claim 1, wherein the means for anchoring the tower (15) to the roof of the shelter include a plurality of beams (25, 26, 28, 30) transversely mounted on the roof of the shelter and secured with anchor bolts running from a top plate through to a bottom plate fixedly secured in desired positions along the lengths of the beams (25, 26).

5    A structure according to claim 4, wherein the beams mounted on the roof of the shelter comprises of a plurality of primary (25,26) and secondary beams (28,30) and wherein the tower (15) is anchored to the primary beams (25,26) and the secondary beams (28,30) are interposed on the roof to support the primary beams (25,26).

6    A structure according to claim 5, wherein the roof (96) is fitted with at least two primary beams (25, 26) and two secondary beams (28, 30).

7    A structure according to claim 1, wherein the roof (96) is covered with a plurality of roof panels (98) and wherein such panels may optionally be perforated for ventilation of the enclosed structure.

8    A structure according to claim 1, wherein the roof (96) is provided with means for accessing the tower (15) from within the shelter (20).

9    A structure according to claim 8, wherein the means for accessing the tower (15) include a climbing ladder and a door (94) fitted onto the roof of the shelter wherein the door is openable from inside the shelter (20).

10    A structure according to claim 5, wherein the primary beams (25, 26) are adjustably mounted on the roof of the shelter and wherein the beams (25,26) are further provided with adjustment means to allow tower (15) of varying leg configurations to be anchored to the roof of the shelter.

11    A structure according to claim 5 andlO, wherein the beams (25, 26) are adjustable to allow a four or three leg tower to be anchored to the roof of the shelter.

12    A structure according to claim 5 and 10, wherein only one beam is adjustable to allow a four or three leg tower to be anchored to the roof of the shelter.

13    A structure according to claim 5 and 10, wherein the adjustment means for anchoring the tower (15) to the roof of the shelter include beams provided with plurality of recesses (23) allowing the tower (15) to be bolted along the length of any of the plurality of the beams.

14    A structure according to claim 1, wherein the metallic framework comprises of a plurality of vertical columns (22) extending from concrete foundation panels (40) to engage a roof frame (24) of the shelter.

15    A method of deploying a telecommunication tower (15) on a site, the method comprising:
(a)    Clearing and excavating the site to level below the ground;
 
(b)    screeding of the excavated site;

(c)    laying the foundation of concrete slab panels on the excavated site

(d)    backfilling the site with compacted earth to the ground level

(e)    erecting a shelter (20) on the concrete foundation, the shelter (20) comprising of an enclosure of fabricated metallic frame work covered with cladding panels along the sides of the enclosure;

(f)    Fitting a roof thereof to cover the top of the enclosure wherein the roof is also fitted with means to anchor the tower (15) to the roof of the shelter.

(g)    mounting a tower (15) on top of the shelter (20).

16    A method according to claim 15 wherein all the fabricated elements of the shelter (20) are bolted together on the site.

17    A method according to claim 15 wherein the tower (15) is anchored to the roof of the shelter (20) by bolting the legs of the tower (15) to a plurality of beams transversely (25, 26) mounted on the roof of the shelter by means of anchor bolts running from top plates through to a bottom plates fixedly secured in desired positions along the lengths of the beams.

18    A method according to claim 15 wherein telecommunication equipment is installed inside the shelter (20).

19    A method according to claim 18 wherein the equipment installed inside the shelter

(20)    comprises at least a generator and fuel tank wherein each equipment is mounted on its own pre-cast concrete slab panel to minimize transfer of vibration to the other equipment.

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