Stages of Design. Index. 1. Stages of Design 2. Design Paths 3. Wood Choices 4. About Trusses 5. Timber frame Components/terms/definitions

Transcription

1 Greenwood imber Framing th Ave NE Redmond, WA (425) n the Web at tages of Design Index 1. tages of Design 2. Design aths 3. Wood Choices 4. About russes 5. imber frame Components/terms/definitions

2 tages of design he design steps with checks to confirm budgets along the way... wner Home - Cost Model DD s ketch - up HCM chematics Design Development * CD s (blueprints) HCM Updated Bids Construction 26 weeks from design to delivery HCM is the Home Cost Model *Guide pec for Architectural and Engineering Criteria (ite, tructural, Architectural, Mechanical, Electrical, lumbing) wner Approvals/ign-ffs 16 weeks from production agreement to delivery 40 weeks to complete on site construction he HCM, or Home-Cost Model, which Greenwood utilizes, offers the ability to budget your house at the conceptual design stage. It also helps us to manage the design, giving our design department the guidelines they need to move forward. he HCM is a line by line identification of the building sub systems, a brief definition of them, and an estimated cost to install. It also generates an Energy Model that calculates the annual energy demands and predicts costs of various fuel sources, including electricity, oil, natural gas, and propane.

3 Design paths Designing your home... Where do you start? Do you have a site? Do you need to have a designer or an architect? here are a number of questions you have to answer as you begin to plan your home. Greenwood can help you with both the questions and the answers. As you begin to go down the home planning path, there are a number of options that you have. You can start from scratch, you can modify an existing Riverbend design, or you can choose a Riverbend design as it is with no changes. Design aths 1. Custom design 2. Modify an existing design 3. Use an existing design Custom design tarts from your input Functional space includes the rooms we live in. At the beginning, as you re thinking about how you want to live in those spaces, sketching up an idea is a place to start. Greenwood F assists you with developing your dream home design. You may find that modifying an existing Riverbend design is the best choice. As you can see here, the plan on the right was adjusted from the plan on the left to create what these homeowners wanted, with less effort than starting from scratch.

4 imber imber species to choose from: Douglas Fir, including FIF outhern Yellow ine Red and White ak Eastern White ine Recycled Fir & Yellow ine Cypress Western Red Cedar ort rford Cedar itka pruce White pruce eak Hemlock Hickory Wood is the prince of building materials. It s a readily available, renewable resource. It is easily worked, stronger than steel and with care will outlast most materials. It is naturally resistant to most chemicals. It is familiar to us; it s used in everything from furniture to timber frames. We think of it as strong and warm. It is undeniably beautiful, easily finished, easy to care for, and flexible. imbers have been known to perform well in earthquakes and fires. No other single material can do so many things and be acceptable to almost all conditions all the time. here are hundreds of timber species; many are much more practical than others. Many have been used and are now recycled. he most common species are listed here. imber frames are most frequently constructed from red and white oak, Douglas fir, or pine. reviously used timbers are often referred to as salvaged, reclaimed or recycled and there is a growing industry that specializes in salvaging timbers from defunct industrial buildings or fallen logs in the forest. imber species for frames are selected based on a number of factors, including color, appearance, relative shrinkage, cost, decay resistance, availability, and the practical maximum length. ther considerations would be the ease of working with, the relative weight, strength, and personal preference.

5 About russes A variety of different truss, post, and beam structures to choose from. tandard king or web truss Queen post truss Hammer beam truss cissor truss Modified king truss tandard collar tie truss Hammer beam eye brow truss King post scissor truss Arched web truss Attic truss Arched hammer beam truss Decorative scissor hese are examples of common timber trusses. russes define the shape of the roof and vaulted ceiling. When a truss is combined with the post and beams which support it, these parts are called a profile bent, which defines the interior space and the shape of the house. Most houses have 3 to 4 profile bents, which are joined together by wood members such as the top plate (beam located at the top of posts) and mid girt (beams located mid way up the posts). he spacing between the profile bents is called a bay. he secondary rafters or purlins which support the roof between the trusses affect the design of the timber frame. he position of these secondary members is determined by the next layer of materials which are the panels. he panel thickness is governed by the snow loads, wind, roofing materials along with other factors.

6 imber Framing Definitions RIDGE URLIN RINCIAL RAFER RIDGE LAE RIDGE URLIN CMMN RAFER RINCIAL RAFER IE IE IE IE CNNECING LAE LAE CNNECING LAE BRACE BEN GIR BEN KNEE BRACE UMMER BEAM JI GIR GIR GIR CNNECING GIR KNEE BRACE BAY ECND FLR FIR FLR BAY BAY Bay: Bays are the areas between bents. A four-bent frame has three bays; a threebent frame has two bays. he size of a bay is limited by the floor or roof load that a frame must bear, and by the size and strength of the timbers in the frame. In frames of oak or Douglas fir, bays are typically a maximum of 16 feet by 16 feet. In pine frames, they are usually smaller. It is a function of area; a bay can usually get longer as long as it also gets narrower. In commercial buildings with large floor loads, or mountaintop houses with large snow loads, bay sizes must go down or timber sizes must go up. Beam - Girt: Beams - also called girts - are framing members that run horizontally. If they are part of a bent, they are called bent girts; if they connect two different bents, they are called connecting girts.

7 imber Framing Definitions Bent: imber framers often think, talk, design and build in bents. A bent consists of the posts, beams and braces that are within the same plane in a frame. A profile bent forms a cross-sectional plane of the structure, and generally defines its shape. Most houses have three or four profile bents. Wall bents, or ridge bents, run longitudinally; they are perpendicular to profile bents. imber frames do not have to be designed or built as a series of bents, but it is usually more efficient and cost effective to do so. Common Rafter: A rafter having no function other than to bear roofing. Girt: A timber or plate connecting the corner posts of an exterior wooden frame, as a braced frame, at a floor above the ground floor. Knee Brace: A diagonal member for bracing the angle between two joined members, as a stud or column and a joist or rafter, being joined to each partway along its length. late: lates are girts that connect the wall posts and support the lower end of rafters. ost: osts are the vertical member. King posts and queen posts are vertical members that are part of a truss. rincipal rafter: A diagonal member of a roof principal, usually forming part of a truss and supporting the purlins on which the common rafters rest. urlin: A longitudinal member in a roof frame, usually for supporting common rafters or the like between the plate and the ridge. Rafter: Rafters support the roof. hey run perpendicular to the roof s ridge, and typically span from a plate to a ridge beam, or from the top of one post to the top of an adjacent higher post. In a long roof plane, they might span from a wall plate to a plate midway up the roof, to the ridge beam at the peak. ummer beam: ne of the major horizontal timbers that connect the vertical posts. ie: Any of various structural members, as beams or rods, for keeping two objects, as rafters or the haunches of an arch, from spreading or separating.