To ensure maintenance operations for an architectural structure using a mast climber without any limitation on the stability of a mast and locations where a mast can be erected. A side wall 101 of an architectural structure 100 is fitted with a fixing member 130 at a level higher than the ground 500. The fixing member 130 is fitted with fixture studs 132. A mast 200 is erected on the fixing member 130 with its lower end secured to the fixture studs 132. A climbing work platform 210 that travels up and down the mast 200 is fixed to the mast 200. A worker performs maintenance operations on the climbing work platform 210.

A lattice type transmission tower leveling device for leveling a transmission tower with respect to a ground surface. The tower leveling device includes a series of side supports positioned at first and second sides of the transmission tower. The leveling device also includes a support beam that is secured to a third side of a transmission tower that is leaning and a second support beam that is secured to a fourth side of the transmission tower opposite the third side. The device further includes a series of brace members that are interconnected to form a lattice brace structure. The lattice brace structure is coupled to the upright members of the transmission tower. The tower leveling device also includes a lift beam secured to the side supports of the tower and a series of hydraulic cylinders that extend from the lift beam to the first support beam. Linear movement of the cylinders causes the transmission tower to rotate about the axis of rotation so that the tower can be leveled and new tower base supports can be installed.

A wind turbine tower including a plurality of annular segments axially aligned with each other, at least one of the annular segments having a plurality of assembled sectors made of precast concrete, adjacent sectors of this segment being assembled by clamping devices and the segment comprising at the interface of adjacent sectors shear keys cast with the sectors.

A method for erecting and/or dismantling a tower, in particular a tower of a wind power installation, comprises providing a climbing crane, erecting the tower by hoisting and fastening tower segments and/or dismantling the tower by detaching and lowering tower segments, implementing, preferably temporary, securing measures for securing the tower in the state of assembly, in particular in the case of expected wind loads on the tower, which comprises taking into consideration the climbing crane, in particular its weight, in implementing the securing measures.

A drilling rig system includes a mast that includes one or more front legs, one or more rear legs positioned opposite the one or more front legs, and a crown block at the top of the mast. The system also includes a raising line coupled to the crown block or the one or more rear legs and configured to apply a first force to the mast. The first force acts in a direction opposing a second force generated by the weight of the mast as the mast pivots between a substantially horizontal position and a substantially vertical position. The system also includes a drawworks assembly coupled to the raising line and configured to pull the raising line to generate the first force, and a telescoping spring assembly coupled to the one or more front legs. The telescoping spring assembly is configured to apply a third force to the mast that acts in the direction opposing the second force.

A method of modular pole construction an elongate modular pole structure is disclosed. A first step of the method involves providing hollow pole section modules, each module having an elongated structure with a base end and an opposed tip end. The modules are stacked to form an elongated modular pole structure of a selected length by mating the tip end of a base module with the base end of an additional module. One or more than one of the modules forming the elongated modular pole structure comprise a composite material having fire resistant properties.

A method of modular pole construction an elongate modular pole structure is disclosed. A first step of the method involves providing hollow pole section modules, each module having an elongated structure with a base end and an opposed tip end. The modules are stacked to form an elongated modular pole structure of a selected length by mating the tip end of a base module with the base end of an additional module. One or more than one of the modules forming the elongated modular pole structure comprise a composite material having fire resistant properties.

Presented herein are systems, methods, and apparatus related to relocatable tower technologies that facilitate on-site deployment and provide improved stiffness in order to minimize motion at a tower top in a manner that existing approaches, which focus on survivability, do not contemplate. In particular, relocatable tower technologies described herein can be deployed rapidly and at low cost, at outdoor sites, to, e.g., provide a vertical mast upon which equipment can be mounted. In certain embodiments, features of relocatable towers described herein allow the vertical mast to survive and remain rigid while being exposed to outdoor elements, such as wind gusts (e.g., up to 110 Mph). Advantages of relocatable tower technologies described herein are particularly well suited where (e.g., scanning based) imaging and/or detection equipment is mounted at a top of the tower, and/or where towers are deployed at sensitive sites such as hydrocarbon production, storage and processing facilities.

A method of forming a wind turbine foundation includes providing an anchor cage in an excavation pit, the anchor cage including an upper flange, a lower flange, and a plurality of anchor bolts extending therebetween. A first cementitious material is directed into the excavation pit so that the anchor cage becomes at least partially embedded in the material, which is allowed to cure to form a rigid body. A connecting element is selectively engaged with the upper flange and an actuating element is positioned in operative relation with the connecting element, the connecting and actuating elements positioned in non-contact relation with the anchor bolts. The actuating element is actuated relative to the connecting element to raise the upper flange from the rigid body into a leveled position. A second cementitious material is directed into a space beneath the raised upper flange and is allowed to cure to form a support layer.

A method of forming a wind turbine foundation includes providing an anchor cage in an excavation pit, the anchor cage including an upper flange, a lower flange, and a plurality of anchor bolts extending therebetween. A first cementitious material is directed into the excavation pit so that the anchor cage becomes at least partially embedded in the material, which is allowed to cure to form a rigid body. A connecting element is selectively engaged with the upper flange and an actuating element is positioned in operative relation with the connecting element, the connecting and actuating elements positioned in non-contact relation with the anchor bolts. The actuating element is actuated relative to the connecting element to raise the upper flange from the rigid body into a leveled position. A second cementitious material is directed into a space beneath the raised upper flange and is allowed to cure to form a support layer.