How To Draw A Framing Plan

Framing Plan

FRAMING PLANS bear witness the size, number, and location of the structural members (steel or forest) in the edifice framework. Split up framing plans may be drawn for the floors, the walls, and the roof.

The Floor FRAMING Programme must specify the sizes and spacing of joists, girders, and columns used to support the floor. Item drawings must be added, if necessary, to evidence the methods of anchoring joists and girders to the columns and foundation walls or footings. The floor framing plan is basically a program view showing the layout of the girders and joists. Figure 10-nineteen shows the mode of presenting flooring framing plans. The unbroken double-line symbol indicates joists. Joist symbols are drawn in the position they volition occupy in the completed building. Double framing around openings and beneath bath fixtures is shown where used. Bridging is as well shown past a double-line symbol that runs perpendicularly to the joist. In the figure, the number of rows of cross bridging is controlled by the span of the joist; the rows should not be placed more 7 or 8 ft apart. Hence, a 14-ft span may need only one row of bridging, just a 16-ft span needs 2 rows.

Dimensions need not be given betwixt joists. Such information is given forth with notes. For case, "2" by eight" joists @ ii' 0" O.C." indicates that the joists are to exist spaced at intervals of 2 ft 0 in. on center (O.C.). Lengths may not be indicated in framing plans; the overall edifice dimensions and the dimensions for each bay or distances betwixt columns or posts provide such information. Notes also place floor openings, bridging, and girts or plates.

The WALL FRAMING PLANS bear witness the location and method of framing openings and ceiling heights then that studs and posts can be cutting.

The ROOF FRAMING PLANS show the construction of the rafters used to bridge the edifice and support the roof. The size, spacing, roof gradient, and all of the details are too shown in the plan. The roof framing programme is drawn in the aforementioned manner equally the floor framing plan; rafters are shown in the same manner equally joists. Figure 10-20 is an instance of a roof framing plan for a wood-frame roof.

In a precast or cast-in-identify physical flooring and roof framing, a structural programme should betoken, with symbols, the location of bearing walls, beams, and columns, and the direction and size of steel reinforcing bars, the direction of the span, and the size and thickness of required structural members. Figure 10-21 shows an instance of a structural roof framing with schedules and general notes included. When preparing framing plans, follow the procedures outlined beneath.

ane. For forest-frame structure, trace or transfer the dimensions of the location of the exterior stud wall, and lay out the limits of the roof overhang. Next, lay out the roof framing by locating the ridgeboard first and then all of the required intersecting pieces.

2. When the floor framing plans are required, proceed to transfer dimensions of the foundation walls or footings. Lay out supporting girders and joists in their proper spacing. Detect any bearing wails, stairwells, and other openings when you are developing a 2nd-floor framing program.

3. For concrete framing, take a similar approach. Lay out the dimensions of the bearing walls below the flooring (or roof) being framed. Hence, you will need the foundation plan to draw the commencement-flooring framing, and yous volition need the first-floor plan to draw the second-floor framing. Adjacent, add together the locations of the beams and columns and the direction of the span and size of the precast concrete or the reinforcing steel for the poured-in-identify physical.

Figure 10-19.-Instance of a structural flooring framing plan for a forest-frame construction.

Effigy 10-21.-Example of a structural roof framing plan for a precast or a cast-in-place concrete construction.

4. For steel framing, trace off or transfer the dimensions of all of the bearing walls, columns, and beams below the floor (or roof) being framed. Lay out the steel framing, using the grid system (a common setup used in steel framing).

5. Lay out guidelines for dimensions, notes, and labels. Darken in all of the framing and fill in the notes and dimensions. Draw in the section and detail marks. Go over your structural plans checklist and check the dimensions against those traced from the floor plan.