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<strong>Tilt</strong>-up <strong>Technical</strong> <strong>Manual</strong><br />
www.MeadowBurke.com<br />
Strongbacks<br />
GENERAL INFORMATION<br />
1. It is sometimes necessary to add more than one strongback leg. This is not usually preferred but is sometimes necessary to limit the size of the<br />
strong backs to a member that is readily available.<br />
2. Strongbacks are normally made of double wood or steel members placed back-to-back. The size of the strongbacks required is dependent upon<br />
the size and shape of each panel and, therefore, can only be determined by a full analysis of each panel.<br />
3. Douglas Fir or Southern Pine wood beams, ranging in size from 4 x 8’s to 4 x 16’s, are commonly used and are available members preferred for<br />
use as strongbacks. Lengths exceeding 20’ are not usually available in most areas of the country.<br />
4. Where common wood size members are not available, the required strongback length exceeds 20’ or when wood members are not strong enough,<br />
the Super-Lift Strongback can be used. Check to determine the availability of these members in your area.<br />
5. Strongbacks are attached to the concrete with B-75 Coil Inserts spaced 2’ to 3’ maximum on center. For strongback leg conditions, the first insert<br />
above the top of the door is normally a B-125 Double Coil Insert.<br />
MB STEEL STRONGBACK SECTION<br />
NOTE:<br />
When strongbacks are used as legs, it is critical that<br />
they are placed on the panel truly vertical. The shore<br />
placed beneath the strongback must be from one<br />
solid piece of timber from top to bottom and be<br />
bolted to the strongback at 6” from the top and bottom<br />
and no more than 3’ on center. (Banding the<br />
shore to the strongback is not recommended)<br />
5"x 5"x 1/2"<br />
Strongback Plates<br />
3/4" Dia. Coil Bolts<br />
Super Steel Strongback<br />
Splice Plate with 3/4"<br />
dia. x 1-1/2" long bolts<br />
and nuts<br />
3/4" Dia. B-75<br />
Coil Insert<br />
1/2" Strongback Plates<br />
3/4" Dia. Coil Bolts<br />
Double 4 x wood<br />
Strongback<br />
3/4" Dia. B-75<br />
Coil Insert<br />
WOOD STRONGBACK SECTION<br />
Double Angle<br />
Strongback Plate<br />
Super Steel Strongback<br />
1-1/4" Dia. Coil Bolts<br />
Cont. Shore with 3/4" Coil<br />
Bolts @ 3' O.C. Max.<br />
1-1/4" Dia. B-125<br />
Double Coil Insert<br />
Double Angle<br />
Strongback Plate<br />
Double 4 x wood<br />
Strongback<br />
1-1/4" Dia. Coil Bolts<br />
Cont. Shore with 3/4" Coil<br />
Bolts @ 3' O.C. Max.<br />
1-1/4" Dia. B-125<br />
Double Coil Insert<br />
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