The HLTF crew raised this two-story 24 x 36 timber framed carriage shed in Kennett Square, PA at the end of March. The owners are planning to use their new timber frame as a shop/garage on the first floor and the second as an art studio.
The guys arrived on site early Monday morning with two trailers of timbers and pre-assembled king post trusses.
The first order of business was to get the site staged for an organized raising. This process includes orienting and setting the crane in the most advantageous position available, designating a timber assembly area and ‘shaking out’ the stacks of timbers.
After the stage was set, the crew then built the walls in sections on the ground so they could then have the crane fly them in to place.
Once in place, the sections were secured and braced off so the crane could fly the next assembly into place. When two assemblies were positioned and braced, the connecting timbers were then carefully installed, plumbed and pegged.
The crane and ground crew worked in concert as assemblies were flown into place the ground crew installed single members growing the frame section-by-section and piece-by-piece.
The lower level of the carriage shed will have two bays for vehicles and an extra bay for a garden tractor and workshop. In timber frame construction the entire shell of the building is on the exterior side of the frame so that the timbers can be exposed on the inside of the structure. In this case, the posts for the lower level are the same posts that define the studio on the second level.
Once installed, the barn flooring and heavy timber floor joists will be the only barrier between the lower and upper levels of the building.
The major purlin and structural ridge bear on the king post trusses so, before they could be installed, the trusses had to be flown, plumbed and secured.
Upon the installation of the king post trusses, the major purlin and structural ridge were lowered into their final resting place. These members in this frame had to be installed piece-by-piece taking up crane time. During this time, other members of the crew installed timbers, which were manageable by hand in another area of the building.
Among other timbers, the second day of the raising focused mainly on the roof rafter system.
The dormers were put together on the ground as much as possible and were then positioned in place by the crane. After that, the crew installed the smaller members completing the dormer.
Below is the timber frame skeleton, which is currently being finished by our sister company, Hugh J. Lofting Construction Management Services, LLC.