first, im using 6x6s. second, to avoid weird jogs in the railing, the railing posts would have their notch facing out from the deck, the depth of the rim joist. this would tend to close the notch, rather than open if further, if force is applied form the deck. the attached image should give a rough indication of whats going on.
post to deck. the key is to not over notch or not notch at all depending on the size railpost. the weak side of outer band bolting in my opinion is that you inevitably end up lagging some post because of joist location. blocking/bridging has to be incorporated into the side framing to control lateral movement as well.
building codes are pretty strict regarding attachment of deck railing posts. it is very difficult to meet code standards with notched posts. also, as you have observed, notched posts are prone to splitting at the stress point at the inside corner of the notch.
the posts are notched so that the 2 boards are sitting side by side in the notch and are bolted to the post l shaped notch at the top of the post . i had someone give me an estimate for replacing my deck and he also said that they'll notch the posts so that they weight is not carried only on the bolts.
this is a bigger deck, the posts are already in, so notching would be a drag. one option is to skip the notching and screw the rails to the inside of the post. another option would be to use a router to notch the posts.
showing how i notched 4x4 post for a deck. showing how i notched 4x4 post for a deck. skip navigation diy deck part 11 - attaching railing posts - duration: 11:49. basa pete 58,059 views.
4. cutting post to the inside give direct bearing support to the top cap of the rail in the o/s corners, outside attachment can't. 5. cutting post to the inside uses less post, as only 1 post is required in the corners. 6. the use of o/s rail post attachment is not allowed by various building deparments in canada and the united states.
outside corner post detail question. but, another approach for a small deck is to run the posts all the way down as the supports. you can scab on a block with more bolts if you need. or, use the outside-mounted posts at each side of the stair stringers to help hold the stringers. a last idea would be to build the frame, bolt the posts on the outside,
q posts are always installed as part of a balustrade system, where the railing, particularly a cap railing that runs over the tops of the posts, ties posts together. yet the tests i saw done at deckexpo showed single posts being subjected to the 500-pound load. that's just not realistic. a on the surface, that's a fair criticism.
deck railing posts are often notched at the bottom to create a lip that extends a few inches over the floor of the deck. while the practice of using these notched posts is common, it has many dbacks. not only is the process of notching posts before installing them more labor intensive, but notched posts are weaker near their notches and more susceptible to cracking.
none of the posts are corner posts as in perpendicular beams resting on it , its a square deck and the beam parallel the one in question to the house is supported by 3 posts 11'' apart. 3 posts because of french door clearance underneath, there is also a beam 24' from the house. 4 posts would have been easier, looked nicer imo and allowed the use of 2 2x12 for beams.
wooden and composite posts are bolted or screwed to the rim board of the deck. they can be installed by bolting them to the outside or the inside of the rim board. if you choose the inside method, the deck boards will need to be notched around the posts, and some additional blocking should be added around the portion under the deck boards to discourage twisting and to add stability. either method is fine but they each have disadvantages.
i don't think that notching railing posts is in the code book, as mac says. i guess that it all depends on how deep you notch the post, as what is left is what your actual post is. notch 1 1/2' out, and you are basically using a heavy 2x4 post. notching is also a place for moisture to sit and rot out your wood.
using a notched post and beam connection will lock the beam in place, secure it from rotating and resist wind uplift. notching a post does not weaken the structural integrity of the wood support post because the load for the deck is transferred down through the post to the footings.
notching a post to recess a deck beam is usually not much of a concern, unless the post continues on to carry a roof or another deck above. even then, provided the post is well connected to the deck against horizontal forces, and the notched portion bears tightly against the framing at the top and bottom, there's probably little concern.
figure 4 - railing post notch for an end post where you want or need outside posts along the width of the deck, the corner post is notched to allow the same thickness on both the width and length of the deck framing, as shown in figure 5.
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start by confirming that each railing post is firmly attached to the deck frame and free of large cracks, rot and insect damage. railing posts should be fastened with lag screws or carriage bolts, not nails or decking screws. if the bottoms of the posts are notched around the rim joist, check to be sure the posts arent splitting at the notches.
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rail posts often require notching to fit around a deck joist photos 2 and 3 . enclosed notches like these are easy to make with a series of saw kerfs. after the chunks are broken out, youll have a little cleanup to do with a sharp wood chisel.
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the previous 4x4 deck rail posts were notched and attached with nails on the outside of the deck. we have replaced many deck boards 2x6 pt and want to replace the railing using 4x4 rail posts. we are unable to bolt them on the outside or on the surface in all of the proper places due to the location and layout of the deck and would like to
many older decks have railing posts installed on the outside of the deck framing, and sometimes those posts were notch-cut at the bottom where they fit against the outside joists. current codes demand stronger posts, so they are generally not notched and are installed on the inside of the framing.