Will start building an attached garage with a 145mm stud frame with openings for 2 garage doors side by side (255mm between each other). The doors will be on the long side, so a beam is needed for the roof trusses, calculated using the Swedish wood tool. At each garage door, I will cut out about 120mm straight down to make a reinforcement, so there will be about 100mm of concrete over the edge of the foundation element according to the builder's instructions.
The question is whether the small section of foundation beam between the garage doors (255mm wide) is sufficient to support the glulam beam above. From what I can see in other builds, nothing special is done with wide garage doors, usually, 2-3 45mm studs are glued together on each side of the garage door. But what about the support against the foundation beam?
The glulam beam will have 3 supports, the garage doors are 2.5m each, so it becomes about 5.5m. According to the calculation, it can easily be supported by 90x90 (this will be 2 pieces of 145x45mm glued together). The force on the outer pillars is 17.353 kN, and the middle pillar is 57.234 kN.
Since the foundation beam is a regular 400mm high foundation element filled with a 350mm wide stem with embedded villa brackets, only 45mm will be directly over the foundation beam. I am thinking of changing this to 190mm (planed down to 195) on both sides and the middle since we will have an installation layer on the inside (145+45), which means about 90mm will be directly over the foundation beam.
Should I be more concerned? I cannot see that any other projects specifically reinforce the sides of the garage doors?
I did a quick check and you should be able to handle about 70 kN on that edge beam if you have at least EPS 300 under the point load and moraine in the ground. At least 2ø12 at the top and bottom of the beam.
I did a quick check and you should handle about 70 kN on that edge beam if you have at least EPS 300 under the point load and till in the ground. At least 2ø12 at the top and bottom of the beam.
Thanks for the answer.
There are strong villa stirrups along the entire edge beam, so that part is fulfilled.
Is it calculated on the basis that the surface is only 255mm?
Thanks for the answer.
There are strong house brackets along the entire edge beam, so that part is fulfilled.
Is it calculated that the surface is only 255mm?
No, on 350 mm as in the detail. The brackets are also needed, but reinforcement is required in the longitudinal direction of the beam to avoid a bending fracture at the underside of the beam under the pillar.
Edge elements are usually not found in the high-strength cellular plastic I mentioned, so they need to be customized.
With 255mm, I meant that the central pillar between the garage doors becomes so wide, i.e., it's not just 90mm straight down in the slab, but 255x190mm. The brackets are welded with the upper and lower longitudinal reinforcement bars, so it's like a construction, see image below. There you can see the recess for the garage door (blurry picture) and a better picture of another corner where you can see all the reinforcement.
Then I calculated that if you have two separate beams, you can see that the point load on the outer pillars is 23 kN. With two such side by side, it becomes 46 kN. Is this a lot to place on a standard edge beam? See image below.
By 255mm I meant that the middle pillar between the garage doors will be that wide, i.e., it will not just be 90mm straight down into the slab, but 255x190mm.
The stirrups are welded together with the lower and upper longitudinal reinforcement bars, so it's like a construction, see the image below. There you can see the cutout for the garage door (blurry image) and a better image of another corner where you can see all the reinforcement.
Then I calculated if you have two separate loads, then you can see that the point load on the outer pillars is 23 kN. With two of those next to each other, it's 46 kN. Is this a lot to put on a standard edge beam?
See the image below.
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Then I understand what you mean! That measurement, between the pillars, doesn't matter much. The reinforcement looks fine too. The hardness of the cell plastic and the ground are usually the weakest parts.
The ground is great, sand. Then 16-32 macadam on it. But the foam is just a regular edge element. That's unfortunately nothing I've reflected on. Can you just replace it directly underneath, the slab is already fully reinforced..
The ground is great, sand. Then 16-32 macadam on it. But the foam plastic is just regular edge element. Unfortunately, that's nothing I've reflected on. Can you just replace it directly underneath, the slab is already reinforced..
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Great and great with sand I don't know, in geotechnical category 1 which this belongs to, you can assume 100 kPa on sand and 200 kPa on moraine.
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