Construction Narrative

We put a construction narrative together as part of starting construction drawings. The narrative describes phase 1.             

The project will begin with an assessment of the site for safety and security. Because school will be in session during construction a fence will be rented to secure the construction area. A space inside the adjacent utility room will be set aside for storing tools that will be left on site. A dumpster will be delivered for construction waste. An as yet to be determined number of existing bike racks will be donated for recycling or refabrication in order to clear the construction site.

            Next, the site will be surveyed and the footings located and marked. An asphalt saw will be rented and the asphalt cut for the five column footings and planter areas. Each excavated area will be 18” x 18” x 30” deep. 6” of gravel will be placed at the bottom of each footing.  A truck will deliver 3-4 yards of concrete. After having poured and screed the concrete the j-bolts will be placed. Once the concrete has cured the leveling nuts are placed and 4” diameter steel columns with shop-welded base plates are placed, bolted, and plumbed. Grout is poured around the connection after leveling.

            The columns will be marked in order to place the steel collars for proper roof pitch. Shop-welded steel collars with 1/4” thick blade plates are bolted through the columns.  Two 2x10 douglas fir members are bolted, on either side of the plate, to form each girder. Four girder assemblies are necessary for the 3-module system. Five 2 x 6 douglas fir purlins will be fastened, 24” o.c., using Simpson hangers, to the girders of each module.

            18-gauge corrugated steel roofing will be cut to size on site. The roofing will be attached to the purlins on the outer two modules. The center module, that is higher, will be attached next. Roof flashing and detailing will be put in place. Gutters will be connected to the outer purlin directly or by using spacers. The gutters from all three modules will drain to a single planter box/swale.

            The planter boxes will be built next – of dry stacked “seconds” from Willamette Greystone. The box will be built to approximately 24” above grade. The excavation will go below grade 24” and be filled with 6” of gravel covered by sandy loam.

            Steel loop bike rakes will be bolted directly into the asphalt 36” o.c. Five racks will be anchored under each module in a configuration to meet code requirements. Benches, artistic bike part details, fascia finishing, and translucent panels are of yet to be determined materials. These will be bolted in place just before the final plantings are done. The Freiker meter will be repositioned if necessary and a target painted on the ground.