MMB818B Moment Frame Beam
The MAGNUM® MMA818B Moment Frame Beam consists of a W8x18 wide flange beam with (2) 7/8″ end plate with gussets, one on each end. The gusseted end plates have (4) 15/16″ bolt holes for connection to a MAGNUM® Moment Frame Column. Allowable lengths vary and are the responsibility of the registered design professional.
Description
MMB818B Moment Frame Beams are installed onto pre-installed Moment Frame Columns. Beams are hoisted into position. Then they attach each beam with (4) 7/8" - 9 UNC bolts and lock washers. Torque to 365 ft-lbs. Continue until all beams are installed. Architectural finishing varies by project. Ramset or PAF is acceptable for use on securing finishes to frame. Every MAGNUM® Moment Frame is designed in accordance with FEMA P55, ASCE24. The maximum story drift (lateral sway motion) allowed under building codes is 1% of the frame height. This during the worst load conditions. This means a 9 ft (108") tall moment frame has been designed for maximum story drift of 108" x 1% = 1"
Additional information
| Weight | 1 lbs |
|---|---|
| Dimensions | 1 × 1 × 1 in |
| Length (ft) | 10, 11, 12, 13, 14, 15, 16, 17, 18, 8, 9 |
| Shape | W8x18 Wide Flange Beam ASTM A992 50 ksi, or Equivalent |
| Bolts | (8) 7/8" – 9 UNC SAE J429 Grade 5 Zinc Coated to ASTM B695/F1941 |
| Required Bolt Torque | 365 ft-lbs |
| Moment of Inertia | New = 619 in(4) |
| Gross Area | New = 5.26 in(2) |
| Section Modulus | New = 15.2 in(3) |
| Coating |
