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    pastor1189's Avatar
    pastor1189 Posts: 1,538, Reputation: 3
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    #1

    Oct 7, 2016, 06:40 AM
    Fastening Wood to Concrete:
    Using ¼ x 3 inches hammer set nail drive concrete anchors. The wood is 2 inches’ x 6 inches’ x 10 Feet.

    Has hammer drill. First what size masonry drill bit (1/4?) Second how long should the
    Fastener be, thickness of the wood is 2” leaving only an inch into the concrete, is that sufficient? Finally, can the process be done, in one shot. Just the wood placed against the concrete drill the hole completely through the lumber into the concrete and hammer the nail in.
    Is that possible?
    ma0641's Avatar
    ma0641 Posts: 15,675, Reputation: 1012
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    #2

    Oct 7, 2016, 09:23 AM
    Horizontal or vertical? On a wall or floor? If a floor, I would use power driven nails. In a wall, I would use lead anchors. You are in FL I believe. If this is outside you most likely have wind codes if this is for a wall.
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    pastor1189 Posts: 1,538, Reputation: 3
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    #3

    Oct 7, 2016, 09:28 AM
    Horizontal in cbs block. Hurricane shutters to attach to the wood at the bottom. Top wood already has been in place . Bottom wood untreated rotted away. Man used concrete nails. Got to have a lot of muscles for those
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    ma0641 Posts: 15,675, Reputation: 1012
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    #4

    Oct 7, 2016, 11:16 AM
    Look at SPAX screws, go right into block, probably without drilling. I would not be hammering a lot on a block wall.
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    pastor1189 Posts: 1,538, Reputation: 3
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    #5

    Oct 7, 2016, 11:45 AM
    Thanks you so much. I have used lead anchors before but lining up the holes in the wood to correspond to the anchors in the concrete has been a problem. Especially
    After the first one is done.
    creahands's Avatar
    creahands Posts: 2,854, Reputation: 195
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    #6

    Oct 8, 2016, 10:39 AM
    Holding wood in position, drill a small pilot hole through wood until it makes a dent in block. This will keep everything in line.

    Chuck
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    pastor1189 Posts: 1,538, Reputation: 3
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    #7

    Oct 8, 2016, 10:46 AM
    Okay Thanks so much
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    ma0641 Posts: 15,675, Reputation: 1012
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    #8

    Oct 8, 2016, 08:18 PM
    Another tip is to drill the holes in the wood, place it where you want and shoot some black spray paint through the holes. Easy to see and lined up.
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    pastor1189 Posts: 1,538, Reputation: 3
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    #9

    Oct 9, 2016, 05:09 AM
    Sounds great. Simultaneously marking the entire board at its end. To make sure
    the board doesn't shift out of its place. Then the holes in the wood will correspond with the lag shields in the cement. If the lag shield is 1/4 does that mean the masonry drill bit must be 1/4 also?
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    ma0641 Posts: 15,675, Reputation: 1012
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    #10

    Oct 9, 2016, 06:20 AM
    Quote Originally Posted by pastor1189 View Post
    Sounds great. Simultaneously marking the entire board at its end. To make sure
    the board doesn't shift out of its place. Then the holes in the wood will correspond with the lag shields in the cement. If the lag shield is 1/4 does that mean the masonry drill bit must be 1/4 also?
    No, bigger hole needed. . the lag shield will be marked with the size drill needed but will probably be 1/2".
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