BILL OF MATERIALSBILL OF MATERIALS

BEGINNING THOUGHTSBEGINNING THOUGHTS► IDENTIFY ONE MACHINE THAT YOU IDENTIFY ONE MACHINE THAT YOU

WILL USE TO BULID YOUR CONCRETE WILL USE TO BULID YOUR CONCRETE FLOAT?FLOAT?

►WHY MUST YOU USE A RULER WHILE WHY MUST YOU USE A RULER WHILE BUILDING YOUR CONCRETE FLOAT?BUILDING YOUR CONCRETE FLOAT?

►WHAT TYPE OF WOOD ARE WE USING WHAT TYPE OF WOOD ARE WE USING FOR THE CONCRETE FLOATS?FOR THE CONCRETE FLOATS?

►2 MINUTES2 MINUTES

A bill of materials is a list and description of A bill of materials is a list and description of all the materials to be used in all the materials to be used in constructing a project.constructing a project.

BILL OF MATERIALS INCLUDES:BILL OF MATERIALS INCLUDES:ITEM/PART NAMENUMBER OF PIECESTYPE OF MATERIALSIZE OF PIECESDESCRIPTION OF PARTSTOTAL FEET

►UNIT COSTUNIT COST►COSTCOST

►Cubic measures are determined by Cubic measures are determined by multiplying thickness by width by lengthmultiplying thickness by width by length

►T” X W” X L”=TOTAL BOARD FEETT” X W” X L”=TOTAL BOARD FEET

►GALVANIZE=IS TO COAT A METAL WITH GALVANIZE=IS TO COAT A METAL WITH ZINC. CADMION IS A SIMILAR METAL ZINC. CADMION IS A SIMILAR METAL USED FOR RUST RESISTANT PLATING OF USED FOR RUST RESISTANT PLATING OF FASTNERS AND OTHER STEEL FASTNERS AND OTHER STEEL PRODUCTS.PRODUCTS.

►CALCULATING BOARD FEET:CALCULATING BOARD FEET:

►Lumber in the form of trees, logs, or rough Lumber in the form of trees, logs, or rough lumber is measured and sold by the board lumber is measured and sold by the board footfoot

►A board foot is an amount of wood equal to A board foot is an amount of wood equal to a board 1” thick X 1’ wide X 1’ long. Or a a board 1” thick X 1’ wide X 1’ long. Or a board that is 1” thick X 12” wide X 12” long.board that is 1” thick X 12” wide X 12” long.

►A board foot is also 144 cubic inches. 1” X A board foot is also 144 cubic inches. 1” X 12” X 12”=144 cubic inches!12” X 12”=144 cubic inches!

►Tongue and groove boards have a Tongue and groove boards have a tongue-like edge sticking out on one side tongue-like edge sticking out on one side and a groove cut into the other; which and a groove cut into the other; which permits them to lock togetherpermits them to lock together

►Lumber is priced by the linear foot since Lumber is priced by the linear foot since tongue and groove boards are being tongue and groove boards are being used. This means that each “running” used. This means that each “running” foot of length in the board is calculated foot of length in the board is calculated into the cost.into the cost.

►Calculating board feet requires Calculating board feet requires computation of the volume of the boardcomputation of the volume of the board

►S4S=the boards are planed or surfaced on S4S=the boards are planed or surfaced on all 4 sidesall 4 sides

►S2S=the boards are planed or surfaced on S2S=the boards are planed or surfaced on only 2 sidesonly 2 sides

►The number of pieces is helpful since it The number of pieces is helpful since it can be used to purchase materials can be used to purchase materials efficiently. It is also needed in the efficiently. It is also needed in the calculation of total feet and total costcalculation of total feet and total cost

►Pricing Materials:Pricing Materials:

Lumber is priced by the thousand Lumber is priced by the thousand board footboard foot

This means=$300 for 1,000 board feet cost This means=$300 for 1,000 board feet cost $.30 per board foot (300/1,000)$.30 per board foot (300/1,000)

►Determining Board Feet:Determining Board Feet:

When a number is rounded up, it When a number is rounded up, it means the next higher whole number is means the next higher whole number is used.used.

In order to combine 3 items into 1 item In order to combine 3 items into 1 item in the bill of materials, the 2-3 ft. pieces are in the bill of materials, the 2-3 ft. pieces are cut from one 6 ft. piece.cut from one 6 ft. piece.

A lot of material is used to determine A lot of material is used to determine the material that must be assembled from a the material that must be assembled from a project and its estimated cost.project and its estimated cost.

Several formats are used for bill of Several formats are used for bill of materials. These vary with the project materials. These vary with the project being planned.being planned.

►The term “item” means a separate The term “item” means a separate objectobject

►THE IMPORTANT IDEA TO REMEMBER IN THE IMPORTANT IDEA TO REMEMBER IN CREATING A BILL OF MATERIALS IS THAT CREATING A BILL OF MATERIALS IS THAT ITEMS OF DIFFERENT TYPES, MATERIALS, ITEMS OF DIFFERENT TYPES, MATERIALS, SIZE OR COSTS SIZE OR COSTS MUST NOTMUST NOT BE MIXED BE MIXED AND LISTED AS ONE ITEMAND LISTED AS ONE ITEM

►HAPPY BUILDING YOUR PROJECTHAPPY BUILDING YOUR PROJECT

►Small pieces of Lumber:Small pieces of Lumber:

BF=thickness x width x lengthBF=thickness x width x length

Large pieces of Lumber:Large pieces of Lumber:

BF=thickness x width x lengthBF=thickness x width x length

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