Browse Forums Owner Builder Forum 1 Jul 02, 2009 8:06 pm Hi all Can any one tell me what is required for framing around windows & doors? I’ve seen 2 35x 90 on each side of windows & door frames. Why is this? Is it extra strength? I feel there must be a code to say 35 is to thin or something. I’m using 45mm x 90mm at 450 centers external. So will I have to have the extra around the windows & doors? E.g. 45mm + a 35mm or 2 x 45mm. Is there a minimum standard for this? What do you people think is it better to have more timber frame around doors & windows by using 35mm, because I think if you are using 45mm timber you don’t have to double them up you just have a single 45mm on each side. Thanks to all Cheers KW……….. “It's just as unpleasant to get more than you bargain for as to get less” George Bernard Shaw. Re: Frame around windows & doors? 2Jul 02, 2009 8:12 pm The outer is the full stud, the inner is the stud supporting the window header (lintel) Re: Frame around windows & doors? 3Jul 02, 2009 9:53 pm The stud under the lintel is called a secondary jamb stud, they are designed to take the load of the lintel, the outer stud is called a jamb stud these are a stud that helps restrain the secondary jamb stud and also helps for fixing the lintel. I recommend a 45mm secondary jamb stud and jamb stud in most cases. As far as the code goes it depends on the size of the opening and roof load that determines the stud size and how many secondary jamb studs are required but normally a 45mm stud does most jobs. As far as fixing goes you really need the jamb stud in most cases eg a single 45mm stud with a 90mm thick lintel isn't going to hold up well with just one stud. Re: Frame around windows & doors? 4Jul 03, 2009 2:46 am Thanks guys I hope Ive got it right, so bare with me. My windows are average of 1027x2710mm & 1200 x 2170mm & other smaller ones. I put in a few pix to make sure I understand. One has a single stick on each side of the window, is this a jam stud or a frame stud. I see a supporting smaller stud under the bottom of the window fixed to the single side stud, is this a 2nd jam stud? In the other pix there is 2 sticks fix together on each side of the window & a smaller one under the window. What this? win 3.jpg win 2.jpg Thanks to all for your kind help and knowledge. Cheers KW.......... Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ “It's just as unpleasant to get more than you bargain for as to get less” George Bernard Shaw. Re: Frame around windows & doors? 5Jul 03, 2009 9:00 am In the 1st picture the window looks like it has one secondary jamb stud to pick up the lintel with no jamb stud beside it. The little stud down the bottom is called an under stud which carries the sill trimmer (the timber below the bottom of the window under the reveal). The second picture shows the 1st stud being the secondary jamb picking up the lintel and a jamb stud butting up against it. I have attached an image to help. WINDOW FRAME.JPG Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ Re: Frame around windows & doors? 6Jul 03, 2009 1:35 pm Nomad Thanks kindly for your help. I like the 2nd pic style with 2 sticks down the side of the window. However, I feel it is common to do it as in the first pic. If I’m using 45mm and 450 stud centres do I need to have the Jam & secondary jam stud. I was thinking the reason for this is most builders use 600mm stud centres & 35 mm timber so they have to put in the extra jam stud. I’m not a builder or have as much experience as you, could that be the reason. Will it be OK if I have no secondary jam stud like the first pic? The roof is at 900mm centres & colorbond. Truss & frame are pre Fab. I’m told there is no internal load bearing walls. Great drawing explained it perfectly. Is it from a book? Or did you do it yourself. Thanks Nomad much appreciated. Cheers KW............. “It's just as unpleasant to get more than you bargain for as to get less” George Bernard Shaw. Re: Frame around windows & doors? 7Jul 07, 2009 12:49 pm Sorry about the late reply KW. The 2 studs down the side of the window is the preferred option and is the most common practice. A stud that is supporting a lintel has compression loads, naturally when a compression load is applied the stud is going to want to buckle, the jamb stud stiffens the secondary jamb stud which prevents the stud from buckling, a noggin is not enough. Also any beam over 45mm thick makes it difficult to connect the top plate through to the secondary jamb stud which makes the wall a bit flimsy. 1 stud can be done on smaller openings or when there isn't enough clearance for 2 studs but other than that i recommend 2 studs. Thanks made that drawing up, was a bit rough. Re: Frame around windows & doors? 8Jul 07, 2009 3:06 pm nomad Sorry about the late reply KW. The 2 studs down the side of the window is the preferred option and is the most common practice. A stud that is supporting a lintel has compression loads, naturally when a compression load is applied the stud is going to want to buckle, the jamb stud stiffens the secondary jamb stud which prevents the stud from buckling, a noggin is not enough. Also any beam over 45mm thick makes it difficult to connect the top plate through to the secondary jamb stud which makes the wall a bit flimsy. 1 stud can be done on smaller openings or when there isn't enough clearance for 2 studs but other than that i recommend 2 studs. Thanks made that drawing up, was a bit rough. It's a great drawing Nomad... may I use it? Also can you name the head components? Thanks "ECOECO" At 'EcoEco', we design windows, we design the best windows, we do it for you, so that when you’re happy we are happy. Tel. 1800 326 326 Re: Frame around windows & doors? 10Jul 07, 2009 6:01 pm That's great, thanks... Ed "ECOECO" At 'EcoEco', we design windows, we design the best windows, we do it for you, so that when you’re happy we are happy. Tel. 1800 326 326 Re: Frame around windows & doors? 11Jul 10, 2009 8:12 pm Probably a silly questions, but does your drawing also apply to steel frames? There is evidence of water on the head reveals. That could have happened during the build, or may be happening currently. There are water stains above a couple of windows… 2 3827 This is 100% true. You can not hang anything on steel frames. very frustrating 8 5374 I don't know them all, the first 2 top of your list are best known. Rylock is a good company, Stegbar is for sale. 4 16201 |