The Haywood Reservoir
Project Description
The City of Hayward owns a reservoir with a partially collapsed roof. The
City needed to have the roof removed before the rainy season began. When
Beyond Waste looked at the reservoir, it became apparent that their particular
skills at deconstruction were exactly what was needed. The roof could not
be removed by a bulldozer. The City put out a RFP and Beyond Waste bid
on the job, winning the bid by $12,000, thus saving the City a considerable
amount of money. Also, as Beyond Waste saves the lumber they take out of
buildings for reuse, saved the wood from being deposited in the landfill.
It should be noted here that the 1x material used as sheathing could not
have been recycled due to the tar stain on the top surface which made it
unacceptable at the wood recycling plant.
The Structure
The roof
sat on concrete columns. Two circles of beams sat atop the columns. The
outer beams measured 8”x14”x16ft. The inner beams measured 4”x12”x16ft.
20-24ft 2x10 rafters sat on top of the beams. The roof was sheathed with
1x6 and then covered with a tar and gravel surface. Beyond Waste salvaged
close to 98% of the lumber, all of which was Douglas Fir.The diameter
of the roof was 120ft and the greatest depth was 12 ft.
Materials Saved For Reuse
| Materials |
Board Foot |
Weight of materials |
| Large Beams 8"x14"x16' |
2,500 |
6750 lb./3.375 tons |
| Small Beams 4"x12"x16' |
500 |
1382 lb./.69 tons |
| Rafters 2"x10"x22' |
12,000 |
32400 lb./16.2 tons |
| Sheathing 1"x6" |
13,000 |
35100 lb./17.55 tons |
| Concrete |
N/A |
12 tons |
| Total |
28,000 |
49.81 tons |
The tar and gravel materials on the roof are not recyclable
or reusable.(except for some loose gravel which Beyond Waste put on the
ground around the reservoir) 31 tons were taken to the landfill.
Time taken to remove building.
It took
less time than anticipated to remove the roof. In deconstruction projects
it is often very difficult to estimate the time it will take. Unknown factors
often make the process more lengthy than anticipated. This project went
smoothly from start to finish. We thought the difficult access would cause
more problems than it did. We though the damages part of the roof would
have to be allowed to drop to the floor of the reservoir making it a lengthy
process to retrieve the lumber. In fact, with a little bracing the entire
roof was taken from the top. We thought the large beams would pose a problem,
but Machado Bros were able to retrieve them when the knocked down the columns.
It therefore only took two weeks with a crew of seven to do our part of
the job and one week with a crane for Machados Bros to do their part.
Marketing of Materials
In the beginning of the project we contacted various bulk buyers to see
the level of interest in the lumber. However when we realized how much
quicker the job was going than anticipated, we realized we had enough time
to take all the lumber back to our yard in Sonoma County. This was our
preference for several reasons. Firstly we have our own warehouse there
which is now beginning to be known as a place to come for quality used
lumber. Secondly we want to take our wood to a higher level. The wood from
this job is rough cut old growth Douglas Fir. We know that this is quite
simply an irreplaceable treasure. As it is, few people can recognize this.
We want to begin the process of making furniture and flooring with the
lumber. When it is processed like this, the true beauty of the grain and
density characteristic of old growth wood shines out. people are then willing
to pay a more appropriate price and in fact treasure it.
Also Macado Bros reported that they used the concrete as “riprap”
for a creek restoration project. Concrete “riprap” is an excellent product
to use for such a purpose, being a reuse rather than a recycling use.