Installing the Moment Frame in Soft-Story Applications
1. Dig the Footing
For pad footings dig the foundation where the columns with hold down anchors will be located. The Engineer of Record may require larger footings. Digging the footing a little deeper not only assures meeting code for moisture, it also makes installation of the Moment Frame and anchors in retrofit applications easier.
2. Prepare the Template Kit
For anchorage, the Template Kit shown includes two Templates, two Bolt Braces, eight anchors, with two washers and four nuts per anchor and rebar shear ties. The Template has a slotted hole at two ends, which are used to measure the inside “steel-to-steel” dimension of the Moment Frame.
3. Delivery of the Moment Frame
The Moment Frame is delivered to the jobsite completely pre-assembled with wood nailers attached. There is no field assembly, no field welding and therefore no required special inspection for the Frame assembly.
4. Installing the Frame
With the footings prepared and shoring in place, the site is ready for installation of the Moment Frame. Tilt the top of the Frame back, away from the building then move it towards the point of installation with the column bases forward. Lower the column bases into the foundation, and then raise the beam until the Frame is vertical.
5. Position the Frame
Raise the Frame up and position it in the wall line. For retrofit applications with the Frame installed within the existing line, raise the Frame until the 3x nailer on top of the beam is in contact with the building collector and install temporary shoring.
6. Installing Anchorage
The anchorage can now be installed at the column base plates and suspended in the open footing. The Bolt Brace that is visible at the embed end assures the anchors will not sway independently while pouring concrete to keep them parallel and plumb. The rebar reinforcement shown is designed by the Engineer of Record.
7. Frame In Place
The Moment Frame is installed and ready for concrete to be poured at the footings. Connectors to transfer shear will be framing angles as specified by the Engineer of Record. The label shown on the left column provides illustrations of typical bottom and top connections for the installers and the building inspector’s reference.
8. Fixed Base Installation
The first pre-engineered, pre-fabricated Moment Frame in the industry.
9. Interior Installation
Continuous Tie-Down systems resist wind uplift and seismic overturning forces while compensating for shrinkage in mulit-story wood framed buildings.