![]() ![]() How does a blind header attach to the existing joist and still support the weight of the wall? Even if I could reduce these headers by six inches, it would be fantastic. Manhattan42 - I'm curious about the blind header. 1.2 Continuous spans For beams continuous over two (2) unequal spans, the design. ![]() He is using an LVL-LAM beam (a double 2x12 that is spanning 12 feet. We had asked our contractor about using steel and he said that it flexes more than the engineered product. US EAST FLOOR LOAD TABLES VERSA-LAM® 2.1E 3100 (100 Load Duration) KEY TO TABLE: Top Figure - Allowable Total Load plf Middle Figure - Allowable Live Load plf Bottom Figure - Minimum Required Bearing Length at End / Intermediate Supports inches Total Load values are limited by shear, moment or deflection equal to L/240. Powerful building design software designll software is a powerful tool for all building practitioners to quickly and simply design more economical floor, wall and roof member layouts. Where the header joist span exceeds 4 feet (1219 mm), the trimmer. with enquiries ranging from beam sizing to installation advice. Sue36 - It will look like a beam, and there will be two intersecting each other. Allowable span tables are provided that greatly simplify the determination of joist, girder. Posted by missmuffet (My Page) on Sun, Sep 19, 10 at 9:12 See if it is possible for your builder to use this technique. The result is a flush ceiling or a much less pronounced projection of the header below ceiling level. Rather than support the joists under the ceiling, the joists are attached to it. One way to reduce the header projection below the ceiling or to eliminate it altogether is to build what is called a 'blind header'.Ī 'blind header' is built right up into the ceiling. ![]() If your headers are 12" below ceiling height, they will be 84".slightly above door opening height and well above minimum. Thats the same height as a doorway opening. Posted by manhattan42 (My Page) on Sun, Sep 19, 10 at 8:10Ĭode required minimum height under a header or beam is 6'8". You can used an engineered product or steel and the header will be smaller. Dimensional lumber results in a larger header. Headers should be engineered based on the load and the width of the opening. Is this going to look like a framed opening or just a beam hanging down? If a beam, I think it will look low. Posted by sue36 (My Page) on Sat, Sep 18, 10 at 23:52 RE: how low can a header go? please help clip this post email this post what is this? Can anyone give me an idea of what an acceptable height for a header would be? If my ceilings are only 8 foot and these things are another foot below that - am I crazy? Help. However, the headers look much lower than I imagined they would. Specifically, the contractor is putting in two headers to hold up the second floor of the house - good idea not to have the house drop in. So they have begun knocking down my supporting walls (yikes), and now I'm second guessing things. Here's my original post and some responses thus far: I posted this on the kitchen site (as that is where I've been hanging out lately), but was hoping that someone over here might be able to help. ![]()
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