CA3119158C - Reinforcing of solid round legs in telecom towers - Google Patents
Reinforcing of solid round legs in telecom towers Download PDFInfo
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- CA3119158C CA3119158C CA3119158A CA3119158A CA3119158C CA 3119158 C CA3119158 C CA 3119158C CA 3119158 A CA3119158 A CA 3119158A CA 3119158 A CA3119158 A CA 3119158A CA 3119158 C CA3119158 C CA 3119158C
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- assembly
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
- E04H12/02—Structures made of specified materials
- E04H12/08—Structures made of specified materials of metal
- E04H12/10—Truss-like structures
Abstract
A mechanism of reinforcing the solid round leg in existing telecom towers (Guyed & Self-Support), it increases the leg resistance in compression (bearing load) over 50%. This type of reinforcing uses the principal and definition of axial force in truss structure by keeping the center of gravity of the new reinforcing members in the same location of the existing solid round leg. This type of reinforcing uses the existing splice pads as a foundation and a platform to build the new reinforcing structure on it. The new reinforcing structure is a replacement of the existing bolting system with new threaded bars and couplers with high strength. The addition of the new threaded bars benefits the overstressed leg, by adding more cross-sectional area to the original solid round leg section.
Description
Description Title: A mechanism of Reinforcing the Solid Round Leg in Existing Telecom Towers (Guyed & Self-support).
Technical Field: Structural Analysis and Reinforcing of Existing Telecom Towers with Solid Round Legs.
Background of the Invention: The telecom business is in action every day due to the fast-growing technologies and the country needs. Telecom companies have so many towers that were built in the country and it was not designed for current time requirements, even new towers sometimes the client does not provide accurate antenna loading due to the lack of information about the future or no clear prediction of what new technology could be or would need.
So, most of the towers fail in the structural analysis, and require extraordinarily strong reinforcing to keep it alive.
Leg Reinforcing in telecom towers have long been known and widely used when the legs become overstressed, and loads are more than its capacity. Engineers used to weld additional bars beside the solid round legs to increase the cross-sectional area to avoid any overstressing issues in legs. Later they used to add additional bars using U-bolts. Using U-bolt is a new way of adding bars to avoid welding on site. Both types are adding bars direct to the leg (welded or U-bolted).
Summary of the Invention: Solid round leg comes with splice plates (flange plates) at top and bottom and bolts to connect. In this invention, reinforcing is using top and bottom splices, replacing existing bolts with threaded bars, nuts, and washers, then adding threaded bars, lock nuts & couplers, mounted to the threaded bars top & bottom. Tightening couplers will split the loads between solid round leg & threaded bars.
Page I - 1 - of 10 Date Regue/Date Received 2022-07-04 Brief Description of the Drawings:
RGM is a profile of a guyed tower.
FIGO2 is a profile of a self-support tower.
RGO3 Iis an isometric of a solid round section, showing top splice (TS), bottom splice (BS), Bracing (BR)& leg (LG).
RGO4 is an isometric of an extracted solid round leg with splice pads, top & bottom. Section s-s, showing cross section in solid round leg.
RGO5 is an assembly of three solid round sections without reinforcing, showing existing bolting system (2)& solid round leg (1) RGO6 is an isometric of an extracted solid round leg (1) showing details of existing bolting system (bolt 2.1, washer 2.2 & nut 2.3) FIG117 is an isometric of an extracted solid round leg (1)showing replacement of an existing bolt with a new threaded bar top(I) & bottom(II) and intermediate assembly (III) on the side.
RG77A is an isometric of an extracted solid round leg (1)showing replacement of an existing bolt with a new threaded bar top(I) & bottom(II) and intermediate assembly (III).
RGOB are an isometric & 2D views of an enlarged detail of assembly (I) RGO9 are an isometric & 2D views of an enlarged detail of assembly (II) FIG10 are an isometric & 2D views of an enlarged detail of assembly (III) RG11 is an elevation of the leg with the lock nut, element 3.4 at a distance = (Coupler height /2) , [h/2].
RG12 is an elevation of the leg with the intermediate assembly (III) at initial position.
FIG13 is an elevation of the leg with rotating couplers No. 4.3 to hit lock nut No. 3.4 at top & bottom.
RaI4 is an elevation of the leg with rotating lock nuts No. 4.2 to secure the couplers No. 4.3 F1G15 is an elevation of the leg with torquing top coupler No. 4.3 &
secure it with lock nut No. 4.2 Page I - 2 - of 10 Date Regue/Date Received 2022-07-04 RG16 is an assembly of three solid round sections with reinforcing Completed.
IRG17 is an enlarged isometric of the joint (from above).
RG113 is an enlarged isometric of the joint (from below).
FIG19 are an isometric & 2D views of three sections with one set of reinforcing completed.
RG20 is simulating solid round leg as a human without arms.
FIG21 is simulating solid round leg with reinforcing as a human with long arms.
RG22 is a chart of Compression Capacity of Solid round leg, fy = 43510 psi.
RG23 is a chart of Compression Capacity of Solid round leg, fy = 50760 psi.
RG24 is a chart of Compression Capacity of threaded bar, fy = 80060 psi.
RG25 is a chart of Compression Capacity of threaded bar, fy = 89920 psi.
RG26 is a chart of Compression Capacity of threaded bar, fy = 100080 psi.
Page I - 3 - of 10 Date Regue/Date Received 2022-07-04 Detailed Description:
Telecom towers are two types, Guyed 011300 & Self-Support Tower 011304.
Engineers use Solid Round(Circular)legs (HGM) in both types because of its good sectional area properties being of a symmetrical shape and high torsional resistance. These towers are designed to support antennas, equipment and feeding cables and to resist wind pressure and ice. The telecom industry is growing so fast and requires changing antennas and their associated equipment frequently. These changes require structural engineers to check the structure to ensure the tower works within the allowable stress limits. In many cases some towers have issues with the legs. The main issue is being the compression resistance less than the compression load. The compression resistance is the compression value that the leg can resist safely, it is defined by leg cross sectional area, unsupported length and strength of material used. The compression load is the load going on leg due to dead load of structure (equipment, antennas, cables, mounts) and live load (wind & ice).
All weld guyed or all weld self-support towers consists of welded sections (AGO. Each section is about (10 to 20) feet high (H) (Re&01,02,03,040). The three Legs (LG) are connected by bracing system, (diagonals & horizontals). Bracing pattern(BR) could be one of these common shapes X, W, S, IS or K system.
Sections are connected through splice connections (splice pads and bolts).
Splice pads are welded to the leg at top (TS) & bottom (BS). Bolts connect sections through its splice pads to form the tower assembly. Each tower is assembly of welded sections (HG 05).
By-law a structural engineer is required to analyze the tower structurally for any loading changes, dead load, or live load (Canadian Standard Association - S37), when the legs are getting highly stressed over the limit then reinforcing the leg is mandatory.
When the structural analysis identifies which section is overstressed then this mechanism (invention) of reinforcing is required.
The idea behind this invention is demonstrated in (FIC620&21). Solid round leg is simulated as a human without arms and loads reach the ground through the human legs. When the solid round leg is loaded with heavy load and it requires reinforcing, the threaded bars are simulated as adding arms to the human body and these arms are long and reaching the ground. Applying torque on couplers is like pushing the ground using hands to transfer part of the loading to the ground through the arms. By this way, heavy load is split between solid round leg and threaded bars.
Page I - 4 - of 10 Date Regue/Date Received 2022-07-04 The assembly of this reinforcing mechanism (invention)consists of three assemblies (I, II & III) (RGSO1&7A:
1. Assembly I consists of (RG08):
= (1)Threaded bar No. 3.1 = (3)Nuts No. 3.2 = (2)Washers No. 3.3 = (1)Lock nut No. 3.4
Technical Field: Structural Analysis and Reinforcing of Existing Telecom Towers with Solid Round Legs.
Background of the Invention: The telecom business is in action every day due to the fast-growing technologies and the country needs. Telecom companies have so many towers that were built in the country and it was not designed for current time requirements, even new towers sometimes the client does not provide accurate antenna loading due to the lack of information about the future or no clear prediction of what new technology could be or would need.
So, most of the towers fail in the structural analysis, and require extraordinarily strong reinforcing to keep it alive.
Leg Reinforcing in telecom towers have long been known and widely used when the legs become overstressed, and loads are more than its capacity. Engineers used to weld additional bars beside the solid round legs to increase the cross-sectional area to avoid any overstressing issues in legs. Later they used to add additional bars using U-bolts. Using U-bolt is a new way of adding bars to avoid welding on site. Both types are adding bars direct to the leg (welded or U-bolted).
Summary of the Invention: Solid round leg comes with splice plates (flange plates) at top and bottom and bolts to connect. In this invention, reinforcing is using top and bottom splices, replacing existing bolts with threaded bars, nuts, and washers, then adding threaded bars, lock nuts & couplers, mounted to the threaded bars top & bottom. Tightening couplers will split the loads between solid round leg & threaded bars.
Page I - 1 - of 10 Date Regue/Date Received 2022-07-04 Brief Description of the Drawings:
RGM is a profile of a guyed tower.
FIGO2 is a profile of a self-support tower.
RGO3 Iis an isometric of a solid round section, showing top splice (TS), bottom splice (BS), Bracing (BR)& leg (LG).
RGO4 is an isometric of an extracted solid round leg with splice pads, top & bottom. Section s-s, showing cross section in solid round leg.
RGO5 is an assembly of three solid round sections without reinforcing, showing existing bolting system (2)& solid round leg (1) RGO6 is an isometric of an extracted solid round leg (1) showing details of existing bolting system (bolt 2.1, washer 2.2 & nut 2.3) FIG117 is an isometric of an extracted solid round leg (1)showing replacement of an existing bolt with a new threaded bar top(I) & bottom(II) and intermediate assembly (III) on the side.
RG77A is an isometric of an extracted solid round leg (1)showing replacement of an existing bolt with a new threaded bar top(I) & bottom(II) and intermediate assembly (III).
RGOB are an isometric & 2D views of an enlarged detail of assembly (I) RGO9 are an isometric & 2D views of an enlarged detail of assembly (II) FIG10 are an isometric & 2D views of an enlarged detail of assembly (III) RG11 is an elevation of the leg with the lock nut, element 3.4 at a distance = (Coupler height /2) , [h/2].
RG12 is an elevation of the leg with the intermediate assembly (III) at initial position.
FIG13 is an elevation of the leg with rotating couplers No. 4.3 to hit lock nut No. 3.4 at top & bottom.
RaI4 is an elevation of the leg with rotating lock nuts No. 4.2 to secure the couplers No. 4.3 F1G15 is an elevation of the leg with torquing top coupler No. 4.3 &
secure it with lock nut No. 4.2 Page I - 2 - of 10 Date Regue/Date Received 2022-07-04 RG16 is an assembly of three solid round sections with reinforcing Completed.
IRG17 is an enlarged isometric of the joint (from above).
RG113 is an enlarged isometric of the joint (from below).
FIG19 are an isometric & 2D views of three sections with one set of reinforcing completed.
RG20 is simulating solid round leg as a human without arms.
FIG21 is simulating solid round leg with reinforcing as a human with long arms.
RG22 is a chart of Compression Capacity of Solid round leg, fy = 43510 psi.
RG23 is a chart of Compression Capacity of Solid round leg, fy = 50760 psi.
RG24 is a chart of Compression Capacity of threaded bar, fy = 80060 psi.
RG25 is a chart of Compression Capacity of threaded bar, fy = 89920 psi.
RG26 is a chart of Compression Capacity of threaded bar, fy = 100080 psi.
Page I - 3 - of 10 Date Regue/Date Received 2022-07-04 Detailed Description:
Telecom towers are two types, Guyed 011300 & Self-Support Tower 011304.
Engineers use Solid Round(Circular)legs (HGM) in both types because of its good sectional area properties being of a symmetrical shape and high torsional resistance. These towers are designed to support antennas, equipment and feeding cables and to resist wind pressure and ice. The telecom industry is growing so fast and requires changing antennas and their associated equipment frequently. These changes require structural engineers to check the structure to ensure the tower works within the allowable stress limits. In many cases some towers have issues with the legs. The main issue is being the compression resistance less than the compression load. The compression resistance is the compression value that the leg can resist safely, it is defined by leg cross sectional area, unsupported length and strength of material used. The compression load is the load going on leg due to dead load of structure (equipment, antennas, cables, mounts) and live load (wind & ice).
All weld guyed or all weld self-support towers consists of welded sections (AGO. Each section is about (10 to 20) feet high (H) (Re&01,02,03,040). The three Legs (LG) are connected by bracing system, (diagonals & horizontals). Bracing pattern(BR) could be one of these common shapes X, W, S, IS or K system.
Sections are connected through splice connections (splice pads and bolts).
Splice pads are welded to the leg at top (TS) & bottom (BS). Bolts connect sections through its splice pads to form the tower assembly. Each tower is assembly of welded sections (HG 05).
By-law a structural engineer is required to analyze the tower structurally for any loading changes, dead load, or live load (Canadian Standard Association - S37), when the legs are getting highly stressed over the limit then reinforcing the leg is mandatory.
When the structural analysis identifies which section is overstressed then this mechanism (invention) of reinforcing is required.
The idea behind this invention is demonstrated in (FIC620&21). Solid round leg is simulated as a human without arms and loads reach the ground through the human legs. When the solid round leg is loaded with heavy load and it requires reinforcing, the threaded bars are simulated as adding arms to the human body and these arms are long and reaching the ground. Applying torque on couplers is like pushing the ground using hands to transfer part of the loading to the ground through the arms. By this way, heavy load is split between solid round leg and threaded bars.
Page I - 4 - of 10 Date Regue/Date Received 2022-07-04 The assembly of this reinforcing mechanism (invention)consists of three assemblies (I, II & III) (RGSO1&7A:
1. Assembly I consists of (RG08):
= (1)Threaded bar No. 3.1 = (3)Nuts No. 3.2 = (2)Washers No. 3.3 = (1)Lock nut No. 3.4
2. Assembly II consists of (RG09):
= (1)Threaded bar No. 3.1 = (3)Nuts No. 3.2 = (2)Washers No. 3.3 = (1)Lock nut No. 3.4
= (1)Threaded bar No. 3.1 = (3)Nuts No. 3.2 = (2)Washers No. 3.3 = (1)Lock nut No. 3.4
3. Assembly III consists of (R0610,17&18):
= (1)Threaded bar No. 4.1 = (2)Lock nuts No. 4.2 = (2)Couplers No. 4.3 = (4) x n*, Plates No. 5.1 = (4) x n*, bolts No. 5.2 = (4) x n*, Nuts No. 5.3 = (1) x n*, Clamp No. 5.4 = (4) x n*, Washers No. 5.5 = (4) x n*, Nuts No. 5.6 n* = number of required joints to define the unsupported length(Lu) (RG16).
Page I - 5 - of 10 Date Regue/Date Received 2022-07-04 In the three sections assembly (RG05), assuming mid-section(B)is overstressed, and it requires reinforcing. The procedure of this invention is as follows:
1. Replace splice bolts at top, bolting system 2 011300, one at a time with the new threaded bar, assembly (I) (11136070i.
2. Replace splice bolts at bottom, bolting system 2 (RG(16), one at a time with the new threaded bar, assembly (II) (RGS07&09).
3. Repeat the previous steps to replace all the existing bolts (RG6)with the new threaded bars , assembly I & II (H08&09).
= (1)Threaded bar No. 4.1 = (2)Lock nuts No. 4.2 = (2)Couplers No. 4.3 = (4) x n*, Plates No. 5.1 = (4) x n*, bolts No. 5.2 = (4) x n*, Nuts No. 5.3 = (1) x n*, Clamp No. 5.4 = (4) x n*, Washers No. 5.5 = (4) x n*, Nuts No. 5.6 n* = number of required joints to define the unsupported length(Lu) (RG16).
Page I - 5 - of 10 Date Regue/Date Received 2022-07-04 In the three sections assembly (RG05), assuming mid-section(B)is overstressed, and it requires reinforcing. The procedure of this invention is as follows:
1. Replace splice bolts at top, bolting system 2 011300, one at a time with the new threaded bar, assembly (I) (11136070i.
2. Replace splice bolts at bottom, bolting system 2 (RG(16), one at a time with the new threaded bar, assembly (II) (RGS07&09).
3. Repeat the previous steps to replace all the existing bolts (RG6)with the new threaded bars , assembly I & II (H08&09).
4. Prepare the intermediate assembly (III) (ROSMITI), adding the number of plates No. 5.1 & nuts No. 5.3 (RGS17&18) to have the required unsupported length (Lu) (RG16)of the reinforcing system.
5. Adjust the lock nut No. 3.4 at top (RGH) to be away from the end of threaded bar No. 3.1, assembly(I) by (coupler height)/2 [h/2].
6. Adjust the lock nut No. 3.4 at bottom (FIGII) to be away from the end of threaded bar No. 3.1, assembly(II) by (coupler height)/2 [h/2].
7. Place the intermediate assembly(III) in between top (I) & bottom (II) threaded bars (RG12).
8. Rotate the coupler No. 4.3 at top, assembly (III) (RG13) to hit the lock nut No. 3.4 in assembly (I).
9. Rotate the coupler No. 4.3 at bottom, assembly (III) (RG13) to hit the lock nut No. 3.4 in assembly (II).
10. Repeat the previous steps for the rest of intermediate assembly (III)to have all threaded bars installed (RG13).
11. Connect the plates No. 5.1, using bolts No. 5.2, washers No. 5.5 & nuts No. 5.6, in intermediate assembly (III) around the solid round leg (RGS17 &18).
12. Add the clamp No. 5.4 above the assembly of plates No. 5.1 in previous step and tighten it (RC617&18).
13. Tighten all the bolts No. 5.2 with nuts 5.6 connecting the plates No.
. 1 (RGS17&18).
. 1 (RGS17&18).
14. Rotate the lock nut No. 4.2 in intermediate assembly (III) at top to secure the coupler No. 4.3 (RG14).
Page I - 6 - of 10 Date Regue/Date Received 2022-07-04
Page I - 6 - of 10 Date Regue/Date Received 2022-07-04
15. Rotate the lock nut No. 4.2 in intermediate assembly (III) at bottom to secure the coupler No. 4.3 (RG14).
16. Apply the required torque on top coupler No. 4.3 (RG15), using wrench by rotating up towards the top splice and at the same time rotate the lock nut No. 4.2 (RG15) to secure the coupler at final position.
17. By applying the required torque on all the intermediate threaded bars (III), one after another, an axial load has been created in the reinforcing mechanism and part of the load on the solid round leg has been transferred (RG16).
Page I - 7 - of 10 Date Regue/Date Received 2022-07-04 Definitions:
fy Yield stress of steel 0136 72,23,24 25,26) Lu Unsupported length, also called buckling length (ROS1419) SR Solid Round (FIGS 22, 23, 24 25, 26) LG Leg (RG 03) TS Top splice (RG03) BS Bottom Splice (FIG 03) BR Bracing (FIG03) H Height of solid round section 1 Oft - 2 Oft (RGS01,02,03,0411) L = H - (length of element 3.1) (FIG 11) A 1st section in three sections assembly (RG05) B 2nd section in three sections assembly (RG05) C 3rd section in three sections assembly (RG05) I Top assembly (first assembly) (FI1S07,07A08) II Bottom assembly (second assembly) (RCS 07,01A09) III Intermediate assembly (third assembly) (R1.E07,07A10) 1 Leg (RGS 05, 06, 07, 07A 08, 09, 11, 12 13, 14 15, 17, 18) 2 Existing bolting system assembly (FIGS 05, 06, 07) 2.1 Existing Bolt (FIGS 06) 2.2 Existing washer (FIG&06) 2.3 Existing Nut (RCS 06) 3.1 Threaded bar (RGS 07A OR 09, 11, 12 13,14, 15) 3.2 Nut (RGS 07A 08, 09,11, 12 13,14 15) 3.3 Washer (RGS 07A Oa 09,11,12,13,1415) 3.4 Lock nut (RCS 07A 08, 09,11, 12 13,14 15) 4.1 Threaded bar (FIGS 07A10,11,12,13,14 15) 4.2 Lock nut (FIGS 07A 10,11,12,13, 1415) 4.3 Coupler (FIGS07A 10,11,1213,1415) 5.1 Plate (RGS 17,18) 5.2 Bolt (FIGS 17,18) 5.3 Nut (Res 17,10 5.4 Clamp (R17,18) 5.5 Washer (RGS 17, 111) 5.6 Nut (RGS 17, 1E0 Page I - 8 - of 10 Date Regue/Date Received 2022-07-04
Page I - 7 - of 10 Date Regue/Date Received 2022-07-04 Definitions:
fy Yield stress of steel 0136 72,23,24 25,26) Lu Unsupported length, also called buckling length (ROS1419) SR Solid Round (FIGS 22, 23, 24 25, 26) LG Leg (RG 03) TS Top splice (RG03) BS Bottom Splice (FIG 03) BR Bracing (FIG03) H Height of solid round section 1 Oft - 2 Oft (RGS01,02,03,0411) L = H - (length of element 3.1) (FIG 11) A 1st section in three sections assembly (RG05) B 2nd section in three sections assembly (RG05) C 3rd section in three sections assembly (RG05) I Top assembly (first assembly) (FI1S07,07A08) II Bottom assembly (second assembly) (RCS 07,01A09) III Intermediate assembly (third assembly) (R1.E07,07A10) 1 Leg (RGS 05, 06, 07, 07A 08, 09, 11, 12 13, 14 15, 17, 18) 2 Existing bolting system assembly (FIGS 05, 06, 07) 2.1 Existing Bolt (FIGS 06) 2.2 Existing washer (FIG&06) 2.3 Existing Nut (RCS 06) 3.1 Threaded bar (RGS 07A OR 09, 11, 12 13,14, 15) 3.2 Nut (RGS 07A 08, 09,11, 12 13,14 15) 3.3 Washer (RGS 07A Oa 09,11,12,13,1415) 3.4 Lock nut (RCS 07A 08, 09,11, 12 13,14 15) 4.1 Threaded bar (FIGS 07A10,11,12,13,14 15) 4.2 Lock nut (FIGS 07A 10,11,12,13, 1415) 4.3 Coupler (FIGS07A 10,11,1213,1415) 5.1 Plate (RGS 17,18) 5.2 Bolt (FIGS 17,18) 5.3 Nut (Res 17,10 5.4 Clamp (R17,18) 5.5 Washer (RGS 17, 111) 5.6 Nut (RGS 17, 1E0 Page I - 8 - of 10 Date Regue/Date Received 2022-07-04
Claims (5)
1. A mechanism of reinforcing a solid round leg in existing telecom towers wherein reinforcing at least one load-bearing section of an entire existing lattice tower assembly, which load bearing section has a predetermined compression load, said mechanism can be installed for any number of overstressed sections, said mechanism uses top and bottom splices of the section of the tower assembly as a foundation and a platform to support reinforcing said round leg, said mechanism is installed at each leg of the section of the tower assembly, the vertical reinforcing elements of said mechanism matches in number with the number of existing bolts per leg, each single reinforcing element of said mechanism is replacing one single bolt at top and bottom of the section of the tower assembly, each reinforcing element of this mechanism of reinforcing is comprising:
a. Assembly I, II are new bolting system at the top splice and the bottom splice, respectively, wherein Assembly I and Assembly II each comprise a plurality of threaded bars with a nut and a washer threaded at each end of the plurality of threaded bars to replace the existing bolts;
b. Assembly III, situated in between assembly I and assembly II, is comprising threaded bars with a nut and coupler to connect with the threaded bars at the top splice and the bottom splice, respectively.
a. Assembly I, II are new bolting system at the top splice and the bottom splice, respectively, wherein Assembly I and Assembly II each comprise a plurality of threaded bars with a nut and a washer threaded at each end of the plurality of threaded bars to replace the existing bolts;
b. Assembly III, situated in between assembly I and assembly II, is comprising threaded bars with a nut and coupler to connect with the threaded bars at the top splice and the bottom splice, respectively.
2. A mechanism of reinforcing according to claim 1 wherein the length of assembly III is adjustable.
3. A mechanism of reinforcing according to claim 2 further comprising one or more lateral support plate attached to the threaded bar of Assembly III
and forming a circle around the leg in center, wherein the one or more lateral support plates are connected by bolts confining the leg of the section of the tower assembly in the center.
and forming a circle around the leg in center, wherein the one or more lateral support plates are connected by bolts confining the leg of the section of the tower assembly in the center.
4. A mechanism of reinforcing according to claim 3 further comprising one or more clamp holding the one or more lateral support plates with the tower leg of the section of the tower assembly in the center, one or more clamp is holding and squeezing the one or more lateral support plates around the leg for tightening bolts to connect the one or more lateral support plates together around the leg.
5. A mechanism of reinforcing a solid round leg in existing telecom towers wherein reinforce one or more load-bearing sections of an entire existing Page l - 9 - of 10 Date Regue/Date Received 2022-12-15 lattice tower assembly, which load-bearing sections each have a predetermined compression load, which mechanism comprises:
a. Assembling said mechanism according to claim 1, start by replacing top &bottom existing bolts with the threaded bars I & II, assembly III having an adjustable vertical measure which is less than the vertical measure between assembly I & II;
b. Positioning assembly III in between assembly I & II;
c. Attaching one or more lateral support plates to the threaded bar of assembly III and forming a circle around the leg in a center;
positioning the one or more lateral support plates;
d. Positioning the one or more clamp on each level of the one or more lateral support plates, tightening bolts, connecting the one or more lateral support plates together around the leg;
e. lengthening assembly III such that for each vertical reinforcing element, the coupler in assembly III is rotated to vertically adjust the length of said mechanism and transfer at least a portion of the compression load from the one or more load-bearing sections to said mechanism, so that the one or more load-bearing sections have a compression load that is lower than the predetermined compression load;
f. Lengthening continuing until a desired amount of load has been transferred to said mechanism.
Page l - 10 - of 10 Date Regue/Date Received 2022-12-15
a. Assembling said mechanism according to claim 1, start by replacing top &bottom existing bolts with the threaded bars I & II, assembly III having an adjustable vertical measure which is less than the vertical measure between assembly I & II;
b. Positioning assembly III in between assembly I & II;
c. Attaching one or more lateral support plates to the threaded bar of assembly III and forming a circle around the leg in a center;
positioning the one or more lateral support plates;
d. Positioning the one or more clamp on each level of the one or more lateral support plates, tightening bolts, connecting the one or more lateral support plates together around the leg;
e. lengthening assembly III such that for each vertical reinforcing element, the coupler in assembly III is rotated to vertically adjust the length of said mechanism and transfer at least a portion of the compression load from the one or more load-bearing sections to said mechanism, so that the one or more load-bearing sections have a compression load that is lower than the predetermined compression load;
f. Lengthening continuing until a desired amount of load has been transferred to said mechanism.
Page l - 10 - of 10 Date Regue/Date Received 2022-12-15
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA3119158A CA3119158C (en) | 2021-05-19 | 2021-05-19 | Reinforcing of solid round legs in telecom towers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA3119158A CA3119158C (en) | 2021-05-19 | 2021-05-19 | Reinforcing of solid round legs in telecom towers |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA3119158A1 CA3119158A1 (en) | 2021-09-02 |
| CA3119158C true CA3119158C (en) | 2023-03-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA3119158A Active CA3119158C (en) | 2021-05-19 | 2021-05-19 | Reinforcing of solid round legs in telecom towers |
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| Country | Link |
|---|---|
| CA (1) | CA3119158C (en) |
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2021
- 2021-05-19 CA CA3119158A patent/CA3119158C/en active Active
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| CA3119158A1 (en) | 2021-09-02 |
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