The 57 acres that comprise Cedar Ridge Farm are located in the beautiful rolling hills of South Central Kentucky. My wife, our four children, and I are on a homesteading adventure as we work toward increased self-sufficiency. We grow much of our own food and enjoy being in touch with the agrarian roots of our lives.

One of the major projects we have undertaken is the building of our own home. The house we're building has three major distinguishing features: 1. we're building it without incurring any debt; 2. it is a timber frame structure; and 3. the exterior walls will be plastered straw bales. We live debt and mortgage free, and building our house with that approach makes perfect sense. Large timbers in a home possess a beauty and project a sense of strength, stability, and warmth that we want in our home. Straw bale walls provide insulation and make ecological sense. This blog is a record of our home-building project.

Thursday, August 9, 2007

Bents 2 and 3 assembled

It's been hot here -- mid to upper 90s with plenty of humidity. Still, there is work to be done. So, I've been doing a lot of sweating. The 90 degree temps are forecast to continue for a while yet.

Mark and I have worked on the frame in between harvesting and preserving the produce from the garden. This week, because of the heat, we've begun work around 8:00am after chores and breakfast. We generally return to the house for lunch and to appreciate the air conditioning, as limited as it is with small window units, around 1:00pm. The prospect of returning to work and sweating some more in the heat after lunch is not one we gladly welcome. So, we are happy to find things to do inside during the afternoon.

We were able to finish assembling the second bent last week. Actually, it's Bent 3, but we started with Bent 4. It's the second one we've assembled. We worked this week and were able to get Bent 2 put together, too. So, that's three bents assembled. One more to go -- Bent 1. God willing, we'll complete that one next week.

I didn't take any pictures of our third bent assembly as we worked on it this week or after finishing it today. I do have some photos of Bent 3 we completed last week (the second one to be assembled). I'll share several now.

The first photo details an error I made in laying out the intersection of the rafters for Bent 3. There are two pitches on the roof: 8:12 on the front and 3:12 on the back. I tried to be as careful as possible in the laying out, but I get the angle wrong where the two come together. You can see the gap that exists in the photo. I'm not going to cut a new rafter, mainly because I don't have another 16' 6x8 lying around. I also don't believe it is necessary, and I don't want to go to all the trouble to cut the joints. I will cut some wedges to fill in the gaps so that my error will not be so readily visible. I will also drive a wedge in on top of the tenon to fill in the gap that exists on that side. I wasn't pleased upon discovering this error, but it will be alright.

The ends of the collar tie where it joins the rafter were cut correctly, though. The photo on the left shows the collar tie on the 3:12 pitch rafter. This intersection is a long one, but it came together nicely. The other side also fit tightly. You can ignore the unsightly gap at the peak!

The process of assembling the bents involves first fitting together the rafters. Then, we put the rafters away and begin putting together the posts and beams. The rafter sets will be assembled at the second floor level and raised there on the day of the raising. The photo to the left shows the beginning of the assembly of the main portion of Bent 3. We set the posts into position and have the scarfed tied beams laid out at the top near where they will fit. At this point, we check to make sure all of the braces will fit and that the mortises and tenons for the beams are correct. I also drill the holes for the pegs through the mortises. When we fit the tenons in their corresponding mortises, I mark them with the point of the auger bit (running the drill in reverse). After pulling the tenon out of the mortise, I drill the hole in the tenon closer to the shoulder of the joint than marked. This is so that when the peg is driven through the tenon in the mortise, it will draw it tight. This technique is known as draw boring. For some joints that fit tightly and are pulled together well, I don't draw bore, mainly because I don't want to have to pull the pieces back apart.

The photo to the right shows the bent after we've fit the first floor level beams into their mortises on the posts. We fit these and peg them. Then, we put the braces in the posts and pull the tie beam into place on its tenons. There is a 2x6 tenon that goes through the scarf joint on the top of the center post. This tenon goes all the way through both sides of the scarf joint.

The three photos below show each of the joints where the first floor beams connect to the posts.

Next, here are three pictures showing the connection of the tie beam to the posts.

In the photo of the scarf joint above, you can see another error at the top of the brace on the right side. Somehow when I cut the joints on this beam 2.5 years ago, I measure wrong and put the brace mortise 1.75" too far out. I had to extend the mortise towards the post so that the brace would fit. I'll plug the hole with a 2"x1.75" block of oak later.

Here's a photo of the first two bents we assembled, or at least parts of them. After we were finished, I snapped a photo of Mark the Intern resting on the timber pile. We have the girts, rafter sets, braces, and unassembled posts organized at one end of the work area. Of course, after assembling three bents (only two were assembled at the time of this photo), the pile is diminishing, at least parts of it.

And, finally, a picture of the first two bents after assembly. If I had a picture of all three, I would post it. Hopefully, I'll be able to post a photo of all four assembled bents next week.

1 comment:

F t K said...

This is very neat to see it progressing. I've occassionally seen these fully assembled, but it totally makes more sense in the step-by-step version. Simple but particular. Thank you for sharing.