Sunday 21 October 2012

Installation of steel beams

After taking a year off, I was chomping at the bit to get started on the house again. My plan this year was to put the floor in and to get rid of the piles of dirt I had.  My brother Ian and myself put on the sill plates and made sure that it was all level, some places needed to be shimmed. A trick that a framer friend of mine told me about, when they are finishing of ICF basements, they attach the electronic level while leveling off the top,saves a lot of time later. It would of saved some time. Lessons learned.
With that done I went ahead and ordered my steel beams and all the floor material (joists and 3/4 inch tongue and groove plywood).  The steel beams were delivered without any problems, right where I asked  to have them dropped.  It was a different story for my floor joists and rim joists. I asked to have them dropped  on my driveway, but where they dropped them was a different story. I was at work, checking  my emails and saw that I had received one from my neighbor Keith. He informed me that my flooring material had been delivered but was not dropped where I wanted it. I replied and asked him if it was close to my driveway. His response was that it was closer to my neighbor's driveway and down a 20 ft embankment.  I went up the next day to check it out and I could not believe where it had been dropped off!  There couldn't have been a worse spot.  I would be making a phone call to the supplier, I was reimbursed   for what it would take a crew to remove it from the embankment to my driveway.
When I got my plans drawn up I questioned the steel beams instead of wood beams. His answer was that steel beams are not as big and they won't be that heavy. His father and himself moved a steel beam into his basement without too much problem. Well, when the steel beams were sitting in the ditch at the top of the driveway, I tried moving them by hand, I emphasize tried,  I couldn't believe how heavy the
beams were, there was no way I was going to move them by hand.  I had to hire a Zoom Boom to move them closer to the house and hopefully use it to lift them into place. Zack, Chris ( my framer friend) and I went up for the day to start and hopefully put all the beams into place. That plan was short lived because the Zoom Boom didn't perform as I had hoped. (not the right piece of equipment!) While putting the first beam in position, Zack pinched his finger badly.  Lots of pain and blood, that day was finished.  I was willing to hire a crane to come and place the steel beams into place.  Chris was adamant that we didn't need a crane, he said we do this all the time, all we need is manpower. They didn't have cranes when they built the pyramids. I was very skeptical because of all the trouble we had with the first beam and that was one of the smallest, they would get bigger as we went along.  So the day of reckoning was here, a small army (11) would go up and throw the beams into place.There was a communication mishap as the plan was to start around 1030 am, when in actual fact everyone was meeting at 1030 a.m. and carpooling up to the  lot. So my car load of 5 headed up at 9am to be ready to start at 1030.  By the time everyone arrived we already had 2 beams in and were making plans for the last beam, which was the heaviest and was going to be the trickiest.

Working smart not hard


When they arrived, they had brought some scaffold which made the job a lot easier as we wouldn't be working off step ladders.                                            
The Calvary arrives
If they didn't arrive when they did we would have had to wait until they did because I couldn't see us moving it let alone lifting it into place.  I still had my doubts about getting this beam into place, not only was the beam heavy, it had a tongue at each end that had to fit into brackets so we could bolt them together.  Well with a lot strength, grunts and groans and of coarse a well defined plan we got the last beam into place and the 2  jack posts attached and tightened, finished. I couldn't believe the job was done, I really didn't think we would do it and it only took a few hours.

Many hands make light work
Fine tuning the beams














What a difference a few hands make- Armstrong power














Saturday 20 October 2012

Summer of 2011

We decided that the summer of 2011 we would take a break from building and enjoy the property.  Last year was so busy we really didn't do much of what we really enjoy (hiking, canoeing, and just relaxing). So this year we will be. I told a non-truth.  I will be doing some some building this year, a dock for my morning coffees.




Many a morning coffee will be consumed here

Putting the Footings to bed

 Winter was coming and I needed to protect the footings.  Back-filling will protect the outer footings but I needed a way to protect the footings on the inside of the basement.  One way is, and quite common on construction sites is the use of straw. That was the way I was heading until I mentioned it to the guy that was back-filling the basement. He suggested to avoid straw at all costs, it would work but it would be hard to deal with after the fact, it gets soggy and stinks.  He suggested  11/2-2 inch Styrofoam insulation 4 ft out from the
The Mike Holmes pose
 wall all around the footings.When the snow accumulates in the basement  it would also act as more insulation. This would be better than straw with no clean up and you keep the insulation there when you pour you basement floor to make a warmer floor.

Now that I have put the footings to bed for the winter, it is now time to sit  and look back at all the hard work done this year and wait until next summer. I might take a break next year from building and just relax but we will see.
John having a good time
A well desired break

Pouring the Basement


Setting up power for the vibrator
Pump truck getting set up
 Here it is, the day I have been working towards. All the hard work that has been done is finally coming to a close.  It is the middle of September and the weather is great. A pump truck and 3 cement trucks had  been ordered, and were on their way. There will be 4 people here today, 2 friends ( Marty and Tim) my son Zack and myself. Lisa and my parents will also be here but they will be in the cheering section. I will  be pouring the cement and Marty and Tim will be running the vibrator and Zack will fill in where needed. The vibrator is used to prevent any large air pockets making  a honeycomb effect in the walls causing the walls to be weak. The walls are 9 ft high and I wanted to fill the walls 2 ft at a time. I started at the furthest wall away from the pump truck( making sure the arm of the pump truck would reach that far). I would  work my way around the basement trying to maintain a 2 ft pour which was not an easy task.  Marty and Tim followed me with the vibrator.  The pour took between 5-6 hours with a lunch break and was pretty much uneventful except for 1 near miss.  We almost had a blow out but it was caught before anything happened.  I was able to brace the section of the wall on both sides.  As the pump operator signaled to me that he had run out of cement and no more trucks were coming, I was about 6 ft short of finishing off the wall.  Luckily one the trucks had spilled a large amount on the driveway so we able to grab buckets and finish the wall off using that.
Pouring cement into the walls
Marty working hard with the vibrator as Tim supervises

Me pouring  and the guys following with the vibrator

To finish off the day Zack and myself went around and confirmed the walls were straight. Only minor adjustments had to be made,  using  the braces. Waited a few days for the cement to set up before I started taking down the braces and moving them to the top of the driveway awaiting pickup, that was a big job.

Starting the basement

I had mentioned in previous blogs that my basement was going to be an ICF basement (Insulated Cement Forms).  I choose to use the Nudura product. I will give you a little background information on this before I explain the installation process.  Nudura Insulated Cement Forms consist of two lightweight 2 5/8-inch thick expanded polystyrene (EPS) foam panels. These EPS panels are connected with high-density polypropylene hinged web/fastening strips every eight inches.  The Nudura wall system completes 6 building steps with one product providing:
  1. The concrete form system
  2. Wall structure (structural reinforced concrete)
  3. Insulation
  4. Air barrier
  5. Vapour barrier
  6. Interior and exterior finish anchorage
Having six wall elements in one product eliminates building steps and allows the building project to be completed faster and more efficiently.  Nudura has the longest forms in the industry, while most systems feature forms at 4 feet in length, Nudura forms are 8 feet long and 18 inches high.  Another feature I really liked was that each form and corner form are fully reversible, having no left and right corners to have to worry about dealing with during construction is nice (mistakes and miss counts do happen, especially with me).
Setting up the layout
My walls are the 6 inch form which means that I will have 2 5/8 foam, 6 inches of cement then another 2 5/8 of foam giving me a R value of approx. 23. That is a a very quick summary of Nudura ICF. There is a lot more information and forms to suit any style of building. This information I have stated relates mainly to the application of my basement.

Now that I have the layout marked on the footings, I can start installing the Nudura forms. One thing I must stress it to make sure you stage all the material in the inside perimeter of the footings. I started in one corner and worked in a clockwise directions placing corner forms first. Now with all the corners in place I started placing the 8 foot standard forms from the corners working towards the centre of that wall. The last piece of standard form needed to be cut to finish off the wall, no tape measures are really  needed at this point. Place the form over the open space and mark the spot and cut it with a big exacto knife. On the form there are cutting groves every 2 inches and an imprint every 8 inches marking the support webs. I marked the piece that I had to cut so I would know what to cut on the third course. The measurement looked like this 4w2g which stood for 4 webs 2 grooves. The 1st,3rd, and 5th courses would be the same layout and the 2nd.4th, and 6th are the same. After the first course was done I had to put horizontal rebar in the forms. This is an easy process as the plastic webs have a slot to put the rebar. Referring back to my installation manual, it states that the forces from the ground(backfill) would be on the inside of the wall so the rebar had to be placed on the slots on the inside of the basement wall.  If I build the entire house from Nudura, any floor above grade,  forces would be on the outside of the wall meaning that the rebar would have to be placed in the slots on the outside.
Placement of rebar


Support set up
Placing vertical rebar
On the 2nd course I would put the horizontal piece of rebar in the outer slot and 3rd course back to the inner slot.  This creates a nice little channel so when its time to place vertical rebar, it's kept in place. All the specs for rebar placement and diameter of rebar can be found in the installation manual.  All charts are engineered and have an engineers stamp, the building inspector might want to see this information. After the second course is done and all the horizontal rebar is in place, form lock has to be installed.  This adds support and straightens the forms. Now before I go any further I have to make sure everything is level, a little work now, prevents a lot of work later on.  Using an electronic level makes this step go quickly. I had to shim some spots but overall I was pretty level.  Before I started the 3rd course I had to attach the forms to the cement footings and this is  done by spraying foam from a can to the join where the Nudura form meets the cement.  I was really surprised how sturdy everything was once the foam dried which didn't take long.  After the third course, supports(braces) needed to be placed in position for 2 reasons. First for support  when the cement is poured into the forms and second, the supports (braces) act as scaffolds. After the third course the wall is 54 inches high and I will be going 6 courses high for a total height of 9 ft.  As seen in the picture the supports are placed 5-6 feet apart. Brackets are attached onto the supports to hold boards. When all is said and done you are able to walk all around the inside of the basement like scaffold. The last few courses went up pretty quick as all  the set up, measurements and leveling had been done.  Now with the walls complete all that needs to be done is to the placement of  vertical rebar. Since the front of the house was going to have a good amount of back-fill against the walls, I had to use 15M (5/8) rebar spaced every 400mm (16 inches).  The rest of the house I could have gotten away with 10M (1/2) rebar but like I stated early, I can't do this again and I like to over build than under build.
Fighting with the rebar
Finally, we completed everything that needed to be done. The salesman for Nudura said that he would come and do a pre-pour inspection with me to make sure everything was in place. He suggested a few areas around the windows that needed extra braces.  Once that was done I was ready for the building inspector to come and inspect the basement.  His only concern was that there were no stirrups( a type of rebar reinforcement) over the windows. I informed him that any window 5 feet and under was not required to have stirrups. All this information is found in the Nudura manual. The inspector signed off on the basement and now it is on to the next step.  POURING THE BASEMENT.