Architectural Dimensioning Part 1 FloorPlan Dimensions t Dimensioning

Architectural Dimensioning Part 1

Floor-Plan Dimensions t. Dimensioning system t. Aligned dimensioning--dimensions are placed in line with the dimension lines and are read from the bottom or right side of the drawing sheet t. Dimension lines are solid (Thin) and not broken t. Dimensions are placed above dimension lines approximately 1/16” above line

Example of Aligned Dimensioning Note: Dimensions readable from the bottom of sheet and right side of sheet above the dimension line

Writing the Actual Dimension t. Feet and Inch/fractions: 6’-7 1/2” t. Even t. Feet feet no inches: and zero inches/fractions: 4’- 0” 8’- 0 3/4” t. No feet only inches: t. No feet only inches/fractions: 1/2” 10” 5

General Rules to Follow for Placing Dimensions exterior dimensions outside the floor plan, starting with the smallest first, then subtotals and finally overall totals t. Place interior dimensions inside the floor plan in string fashion. Several strings may be required both horizontally and vertically t. Place

Arrows or Terminators t. For class project use diagonal lines for all dimensioning terminators t. Use arrows for all leaders and callouts

Making Arrows for Leaders t. Arrows for dimensions and leader lines should be the same t. Arrows usually have a set proportion and have a slender look to them 1/8” to 3/16” 1/32” to 1/16”

Making Tick Marks for Terminators t. Commonly 1/8” long at 45 degree t. Usually done freehand A thick slash is common on manual and CADD drawings Freehand slash all in the same direction

Dimension Procedures t. Dimensions are placed on the drawing are dependant upon the type of material the walls are constructed of: 1) Frame or wood studs t 2) Brick or stone veneer over frame t 3) Solid masonry and cast concrete t

Frame or Wood Studs Walls t. Two x 4 or 2 x 6 make up the Skeleton of the structure t. A common wood frame wall is 5 1/4” thick t. This wall is drafted 6”

Frame or Wood Studs Walls t. To communicate to the carpenter this exterior wall is dimensioned to the outside face of stud t. This dimension is 1 1/4” from the outside line of the

Frame or Wood Studs Walls t. Materials terms that make up the wood frame wall: t. Siding (3/4”) t. Sheathing (1/2”) t. Stud (2 x 4) t. Gypsum Board (1/2”) t. Insulation in stud wall

Spacing of Dimensioning Lines t. First string of dimensions are usually placed about 3/8” to 1” from the object depending upon the amount of space available t. Second string of dimensions are placed 3/8” to 1/2” from the first string of dimensions t. Additional strings of dimensions are spaced like the second string of

Dimensioning Exterior Frame or Wood Stud Walls t. Dimension to the outside face of stud t. Dimension to centers of doors and windows t. Do not dimension interior partitions with the exterior string of dimensions

t Step #1 --Place extension lines at face of exterior studs, center lines at centers of doors and windows t Place first string of dimension lines about 3/4” away from floor plan Steps in Dimensioning a Plan

t Step #2 --Place second string of dimensions about 1/2” from first string t These dimensions are considered to be subtotals Steps in Dimensioning a Plan

t Step #3 --Place overall dimension line about 1/2” away from previous dimension line t Check that all cumulative dimension equal the subtotal dimensions Steps in Dimensioning a Plan

Brick or Stone Veneer over Frame t. Same skeleton as framed structure but stone or brick replaces the siding with air space between brick and sheathing t. Dimensioned to face of stud

Brick or Stone Veneer over Frame t. Dimension to the outside face of stud t. Dimension to centers of doors and windows t. Do not dimension interior partitions with the exterior string of dimensions

Dimension Exercise #1 t. Read Instructions & Follow all rules that apply: t#1 --Dimension exterior horizontal dimensions t#2 --Dimension exterior vertical dimensions

Dimensioning Steps t. Tape drawing to drafting table and square with drafting machine. t. All work at this point will be with a 4 H pencil (very thin): . 3 mm or. 5 mm with hard lead

Dimensioning Steps t. Place Extension lines at measuring points of the plan: 1)Face of stud of wood wall (1 ¼”) from outside wall line, 2)Face of stud of Veneer wall (5 ¼” from outside wall line, 3)Center of door and window Cente r Line Add Extension lines

Dimensioning Steps t. Place first line of dimension from plan (3/8” to 1”) 3/8” to 1” from plan

Dimensioning Steps t. Add sub total and total dimension lines. Note some plans will not require sub total dimension lines 3/8” to ½” ” from previous line

Dimensioning Steps t. Clean up extension lines and dimension lines and add any final dimension lines: (thickness of brick to face of stud, do only once and write (TYP) meaning TYPICAL t. Label at one location (TO FACE OF STUD) with leader pointing to it. To Face of Stud 5 ¼”(TYP)

Dimensioning Steps t. Add tick marks at all intersections of extension lines and dimension lines. t. Add guidelines above dimension lines and place values of measurements between tick marks Add Dimens For each string Add Tick Marks

t. Dimension Exercise #1 Solution

t. First--Work on Dimensioning Exercise t. Second—Work on Project Floor Plan