Corrigendum : Tender For Supply Of Rescue Shoring Items, Bengaluru-Karnataka

Corrigendum : Tender For Supply Of Rescue Shoring Items -A Mechanical Struts System 1 A Heavy Duty Mechanical Struts shall be constructed of a minimum 85mm diameter extruded alloy tube with an aluminum alloy movable shaft. The strut shall have a locking collar and square thread allowing infinite adjustment and full surface contact of the shaft through the collar and the collar full surface contact on the tube to transfer load directly to the ground. All pneumatic fittings shall be made of non-sparking corrosion resistant brass. The locking collar shall be knurled with a non-aggressive textured surface providing enough grip to use with gloved hands. a Retracted length: up to 2950mm Stroke: up to 1120mm Weight: Shall not be more than 19kg Working Load: 14T at 2:1 Safety Factor and 7T at 4:1 Safety Factor 3 2 Mechanical Adjustable Braces shall be used in raker systems as hardened connections between struts that resist both compression and extension forces. The adjustable brace must consist of a minimum 85mm diameter extruded aluminum alloy tube with an aluminum alloy movable shaft. The braces shall be hard coat anodized for protection and longevity. The adjustable brace shall have a locking collar directly integrated with the tube and square thread allowing infinite adjustment and full surface contact of the shaft through the collar and tube to transfer load. The brace shall have a knurled collar designed to assist in twist-extending the brace with a non-aggressive textured surface providing enough grip to use with gloved hands. Retracted length: up to 2160mm, Stroke: up to 640mm Weight: Shall not be more than 15kg Working Load: 18T at 2:1 Safety Factor and 9T at 4:1 Safety Factor 5 3 Mechanical Adjustable Braces shall be used in raker systems as hardened connections between struts that resist both compression and extension forces. The adjustable brace must consist of a minimum 85mm diameter extruded aluminum alloy tube with an aluminum alloy movable shaft. The braces shall be hard coat anodized for protection and longevity. The adjustable brace shall have a locking collar directly integrated with the tube and square thread allowing infinite adjustment and full surface contact of the shaft through the collar and tube to transfer load. The brace shall have a knurled collar designed to assist in twist-extending the brace with a non-aggressive textured surface providing enough grip to use with gloved hands. Retracted length: up to 910mm, Stroke: up to 250mm Weight: Shall not be more than 7kg Working Load: 18T at 2:1 Safety Factor and 9T at 4:1 Safety Factor 2 4 A mechanical Strut Extensions shall be constructed of a minimum 85mm diameter extruded alloy tube hard coat anodized for protection and longevity. Strut Extensions shall be compatible with the 85mm Strut system. Strut Extension shall have a spring-loaded locking pin to permit simple and secure connection to the Strut. Strut Extension shall include a simple, picture-based usage and warning label. Strut Extension labels shall be clearly color-coded denoting strut extension size for easy extension selection. a Length: Shall not be less than 600mm Weight: Shall not be more than 4.5Kg 4 b Length: Shall not be less than 1200mm Weight: Shall not be more than 7Kg 2 c Length: Shall not be less than 1700mm Weight: Shall not be more than 9.5Kg 2 5 Ground Hinged Base Plates shall be designed to support the strut systems during operation and shall be hard coat anodized for protection and longevity. Base plates shall have a textured, aggressive ground contact surface. They shall have an anchor ring to attach anchoring straps, ratchet belts or chains. The clevis shall have a spring-loaded locking pin to permit simple and secure connection to the Rescue Struts and hinged connector which will allow the clevis to move through a 90-degree range for proper placement and support. Base Plate Size: 305mm x 305mm Angle: up to 45deg each side, Hinged Base Number of Holes: shall not be less than 8. Dia of Hole: 25mm 2 6 Raker Rail latches shall be milled from solid blocks of aluminum to ensure a monolithic structure with predictable, superior strength. The Raker Rail latch shall have a set of pins installed on either side of the steel shaft, sized to interconnect with and lock into the Raker Rail. The clevis shall be compatible with the strut system and be installed with a spring-loaded locking pin to securely connect with the inserted strut. Weight: Shall not be more than 1.5Kg 4 7 Raker Rails shall be produced of an extruded aluminum alloy, hard coat anodized for protection and longevity. The Raker Rail shall have Latch connection holes every 305mm and holes every 305mm for wall anchors. A sticker with instructional information shall be attached to the Raker Rail. It shall outline Raker assembly best practices and display recommended safe working load tables with height to point of insertion, Raker length, and loads for a fully assembled Raker with x-bracing at both 45 degrees and 60 degrees. Raker Rail Length: shall not be less than 1830mm. Weight: shall not be more than 10kg 2 8 The clamp and clevis shall be used to connect struts and braces to other struts and braces to form stronger integrated structures. The clamp and clevis shall be compatible with the strut and raker system. It shall connect securely to raker struts or braces to allow cross-bracing with a heavy-duty steel clamp, tightened by a solid stainless-steel puck with integrated washer, allowing quick and simple hand tightening of the system without the use of tools. The clamp and clevis shall attach to struts and braces using a spring-loaded locking pin on the hub. 12 9 Raker Angle Bases shall be produced of an extruded aluminum alloy and shall be placed behind the hinged base plate in front of the sole anchor, transferring horizontal load from the base plate and distributing it against the sole anchor. The Raker Angle Base shall have a L shape, the width of the hinged base plate, with a positioning bar securely attached to slot in the back of the hinged base plate and prevent slippage. The Raker Angle Base shall have two notches, matched to the location of picket holes in the base plate, so that when the base plate is placed into position, the angle base does not interfere with driving pickets through the base plate. The Raker Angle Base shall have 4 holes on sole anchor face large enough to accept a 3” 16 penny nails for securing the bases to shoring lumber. 2 10 The Rail Latch Holder shall be a compact storage container for the Raker Rail Latches. The Latch Holder shall have properly spaced indentations to accept the locking pins of the Raker Rail Latch and a handle for easy transport and storage. 1 11 Square Swivel Base Plates shall be designed to support the strut systems during operation and be hard coat anodized. Bases shall not be cast or welded upon in any way and shall have a textured, aggressive ground contact surface. The cup connecting to the strut base shall be designed to rotate and swivel. The Swivel Base Plates shall have 4 holes large enough to accept a 3” 16 penny nails for securing the bases to strong backs and shoring lumber. The bases shall have a spring-loaded locking pin to permit simple and secure connection to the Struts. Swivel Base Angle: up to 20deg off vertical in any direction Size: 152mm X 152mm Weight: up to 1.5kg 2 12 Square Rigid Base Plates shall be designed to support the strut systems during operation and be hard coat anodized. Bases shall not be cast or welded upon in any way and shall have a textured, aggressive ground contact surface. The Rigid Base Plates shall have 4 holes large enough to accept a 3” 16 penny nails for securing the bases to strong backs and shoring lumber. The bases shall have a spring-loaded locking pin to permit simple and secure connection to the Struts. Size: 152mm X 152mm Weight: up to 1.5kg 2

INR 500 /-

INR 233000.0 /-

Refer document