3/18/2024 0 Comments Roof rafter tie rods![]() ![]() The design of the steel beam and the stiffeners are the responsibility of the Designer. The new connector reduces the number of components from seven to two, saving contractors installation time and cost. The rod‑to‑steel‑beam connector (ATS‑SBC) features a preattached high‑strength steel threaded rod and weldable plate for use on projects where the run is to be anchored to steel beams. The structural heavy hex nut is attached to a pre‑formed steel "chair," which eliminates the need for an additional nut on the bottom of the anchor bolt. ![]() The ABL enables the accurate and secure placement of anchor bolts on concrete‑deck forms prior to concrete placement. They combine to make an economical podium‑deck anchorage solution. SAR anchor rods are for use with the ABL anchor bolt locator. ![]() Where higher anchor capacities are needed such as at edge conditions or to meet seismic ductility requirements, the anchor kit is combined with anchor reinforcement. ![]() The shallow anchor is easily installed before or after placement of the slab reinforcing steel or tendons. The shallow anchor is provided with a plate washer fixed in place that attaches on the ABL nut when assembled and increases the anchor breakout and pullout capacity. The structural heavy hex nut is attached to pre‑formed steel and becomes the bottom nut of the anchor assembly. Uniquely suited for installation to concrete‑deck forms, the ABL enables accurate and secure placement of anchor bolts. The Shallow Podium Slab anchor kit includes the patented Anchor Bolt Locator (ABL) and patent‑pending Shallow Anchor Rod (SAR). Information clearly etched on the shank allows easy identification in the field. Strong‑Rod threaded rods are threaded on both ends, with the top end having 305 mm or 1 219 mm of thread to allow for the distance that the rod sticks through the device. Strong‑Rod threaded rods are the tension transfer element within the Anchor Tiedown System for shearwall overturning restraint. Couplers are typically sufficient as black steel however a hot-dip galvanised option is available. Couplers are available in same rod size each end, as well as reducing couplers to allow for stepping of rod sizes up the rod run. Coupler NutsĬNW and ATS-C coupler nuts are used to connect one threaded rod to another and connect to anchor bolts within the Strong-Rod Anchor Tiedown System for shearwall overturning restraint. Before activating an ATUD make sure the pin on the take‑up device on the floor below has been pulled. Shrinkwrap should remain on the device until the pin is ready to be pulled. The pin can be pulled anytime after the nut has been tightened onto the top bearing plate and must be pulled by the time the building is fully loaded. For installation, ensure that the activation pin is pointing up and facing toward the inside of the building space. Expanding screw‑style take‑up devices provide the lowest device displacements. The ATUD (Aluminium) and TUD (Steel) expanding take‑up devices are suitable for rod diameters from 1/2" (13 mm) up to 1 3/4" (45 mm) and shrinkage up to 75 mm. Engagement is maintained on the rod by the take‑up device, enabling the rod system to perform as designed from the time of installation. Once the fastener holes are aligned and the RTUD is flush, install the Strong‑Drive ® fasteners. Once the RTUD is installed, a series of internal threaded wedges enable the device to ratchet down the rod as the timber structure shrinks, but engage the rod in the reverse direction under tensile loading. The RTUD should be hand installed until the base of the device fully bears on top of the BPRTUD. The RTUD is code‑listed for use with rod systems to ensure highly reliable performance in a device that allows for unlimited shrinkage. The RTUD ratcheting take‑up device is a cost‑effective shrinkage compensation solution for continuous rod systems. Our knowledge of rod system performance through years of testing ensures that all system design considerations have been met.Steel tension elements of the structural lateral force resisting system.System components provide low deflection to help limit shearwall drift.Directing the diaphragm loads from roofs, floors and walls to the foundation in a prescribed continuous load path.An ATS restraint provides the high load capacities required for mid‑rise timber (3‑ to 6‑storey) construction.From our threaded rod to our plates and nuts, to our latest shrinkage compensators and design services, we offer Designers a complete solution. To complement its research and design expertise, Simpson Strong‑Tie has all the components needed to optimally design and build a continuous rod tiedown system for withstanding shearwall overturning forces. The Strong-Rod ™ Anchor Tiedown Systems (ATS) offer safe and tested continuous rod tiedown solutions for multi-story, timber-frame construction in seismic and high-wind areas. ![]()
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