How To Use Unravel

tutorial

screens

Coil Calculator

For calculating

values of coiled

coated or cold

rolled (uncoated)

sheet steel. See

Features and

Exercises below.

screens

Sheet Calculator

For calculating values of individual sheets or

bundles of sheet steel. See Features and

Exercises below.

screens

Conversions

Quick reference guide for

viewing:

• Decimal Ranges for

MIN, NOM, and MAX of a Gauge

• The Yield Difference between the

MIN and NOM, and MIN and

MAX of a Gauge (%MIN-NOM

and %NOM-MAX, respectively)

screens

Conversions (cont’d)

Quick reference guide for

viewing:

• Weight per Square Feet or

Square Meters of a Gauge

• Available in Imperial and Metric

units in either a Chart or

Interactive Dial view (Dial View is

available in iOS and Android only)

features

1. “Calculate” Selection

Advanced Mode

All possible values will be calculated from the values

present. Most users will prefer Advanced Mode.

features

1. “Calculate” Selection (cont’d)

“Guided” Mode

Unravel will guide the user

through the possible fields

they could use to calculate

the selected field. Unravel

is in “guided” mode if any

value other than Advanced

is selected. Fields with a

gray background are not

required for the calculation,

but can be entered.

features

2. “Steel Type” Selection

Used to calculate weight

and determine decimal to

gauge conversions.

• Coated: Use for

Galvanized, Galvannealed,

Galvalume, Aluminized

• Uncoated – CR: Use for

Cold Rolled

features

3. “Units” of Measure Selection

Used for converting between

Imperial and Metric units of

measure. iOS and Android also

have a “Default Unit of Measure”

setting in the gear icon in the

upper right of the screen.

features

4. Clear Screen Function

To clear all of the values in

the current screen, click the

Clear button beside the

“Units” Selection or navigate

to a different screen in the

application.

Android Users: The Clear button

is available in the Android menu

button.

features

5. Graphical Representation of

Coil and Sheets

Displays all manually

entered and calculated

values for the current

screen.

features

5. Graphical Representation of

Coil and Sheets (cont’d)

When possible, the

Formula used to calculate

the field selected to

“Calculate” is displayed

below the graphic. The

Formula is only available

when “Calculate” is in

Guided Mode (i.e. any

value except “Advanced”

is selected).

features

6. Fields

Unravel calculations are

executed according to the

following rules:

• Unravel automatically calculates all possible

field values based on available inputs.

• If Unravel needs to recalculate a field value

based on a newer input, Unravel will adjust

the earliest value entered first. See Coil

Calculator samples for an example.

features

6. Fields (cont’d)



following rules:

• Minimum & Maximum values are enforced

on all fields.

• Field values can be changed at any time

regardless whether they are manually

entered or calculated and Unravel will

recalculate all applicable fields using the

new input

features




following rules:

• Decimal can be entered using either the 10-

key or the Gauge Converter controls

explained below.

• PIW is only available when Units are set to

“Imperial.”

features




following rules:

• CWT Price is unavailable until a weight is

present.

• Price fields will only calculate based on the

available metrics. For example, Price per

Square Feet is only calculated if Area is

populated, and Price per Linear Feet is only

calculated if Length is populated.

features

7. 10-Key Entry (mobile device only)

Used to enter numeric values

into fields. Click the

“C” or the circled “X”

to clear the values

from a field.

*Screenshot taken from iPad

features

8. Decimal to Gauge Converter

All This is an alternate method to input

decimal for users who typically work in

gauges. It displays the ASTM ranges

for the MIN, NOM, and MAX decimal

ranges of a gauge for the type of steel

selected (Coated or Uncoated Cold

Rolled).

features

8. Decimal to Gauge Converter (cont’d)

(Mobile device only) Turn

the dial to the desired

gauge then click the MIN,

NOM, or MAX button to

insert the corresponding

decimal into the field.

*Screenshot taken from iPad

sample calculations

Coil Calculator

Use a Tape Measure and Micrometer to find

Coil Weight, Length, Area, and Price

1. Set the selections

• Calculate: Advanced

• Steel: Coated

• Units: Imperial

sample calculations

Coil Calculator

2. Input data into the Coil Calculator

Important! Be sure to enter OD first. The order the

fields are entered in is critical later in this

calculation.

• OD: 47.5 inches

• ID: 20 inches

• Width: 48 inches

• Decimal: NOM of 20 Gauge (.0396)

Note: PIW, Length, Area and Weight are automatically

calculated as you are entering values, and the Price fields

become available when Weight is calculated.

sample calculations

Coil Calculator

Finding the price

3. Enter CWT: $35.75

• The Coil Prices are all calculated

since CWT, Length, and Area were

all populated from the step above.

sample calculations

Coil Calculator

Sell it Overseas

4. Change the Units Selection to

“Convert to Metric”

• All values are converted to Metric

units, and Prices are adjusted

accordingly. Note that PIW is not

available, since this is only

available in Imperial Units.

sample calculations

Coil Calculator

Sell it Overseas

5. Change the Units Selection to

“Convert to Imperial”

• All values return to their original

values.

sample calculations

Coil Calculator

Breaking it down: Derived Calculations

The If you change a value at any time, regardless if it

is manually entered or automatically calculated, all

other possible values in the screen will be

recalculated. This is a good way to:

• Find the new Weight and OD of a coil when it is

“broken down,”or cut to coils of shorter lengths

(change the Length or Area).

• Find the new Weight of a slit coil (change the

Width).

sample calculations

Coil Calculator

Breaking it down: Derived Calculations

(cont’d)

• Compare Yield difference of coils or sheets at

the MIN, NOM, and MAX of a gauge or at

different gauges (change the Decimal, either

manually or using the Gauge Converter).

• Using the Calculations from the steps above:

sample calculations

Coil Calculator

6. Change Length to 2,000 feet

• All This simulates “breaking” a coil into

smaller coils.

• The new Weight, OD, and Prices are

calculated for the smaller coil. (All other

fields are unchanged.)

Note: OD will only be recalculated if OD was the

first value input. Otherwise the first value

entered, often ID since it is at the top of the

list, would be adjusted.

sample calculations

Coil Calculator

7. Change the Width to 12 inches

• This simulates slitting the new coil into 4

equal parts.

• The new Weight, Area, and Prices are

calculated for the new slit coils.

sample calculations

Coil Calculator

Quick Metric Conversions

You can quickly convert any fields between Metric

and Imperial at any time by changing Units.

1. To convert from Metric to Imperial, set Units to

“Convert to Metric”

2. Input the value(s) you want to convert into the

appropriate field(s)

For example:

sample calculations

Coil Calculator

Quick Metric Conversions

You can quickly convert any fields between Metric

and Imperial at any time by changing Units.

3. Change Units to “Convert to Imperial”.

Units are updated to:

4. Wash. Rinse. Repeat.

sample calculations

Sheet Calculator

The Sheet Calculator works nearly identically to

the Coil Calculator. Once you are familiar with the

Coil Calculator, all the same techniques will apply

for sheets.

sample calculations

Sheet Calculator

Calculate the Pieces in a Bundle

Calculate the pieces in a bundle using a tape measure and

scale.

1. Change the Selections to:

• Calculate: Advanced

• Steel: Coated

• Units: Imperial

sample calculations

Sheet Calculator

2. Input the following values


• Length: 120 inches

• Decimal: Min of 25 Gauge (.0207)

• Total Weight: 5000 lbs

Pieces, Total Length, and Total Area will be

automatically calculated.

sample calculations

Sheet Calculator

3. Get Price: Set CWT Price $39.50

Note: All remaining Price fields are calculated.

sample calculations

Sheet Calculator

How much does a bundle weigh?


Important! Add Pieces first. This order is

important for later in this exercise.

• Pieces: 65


• Length: 110 inches

• Decimal: NOM of 19 Gauge (.0456)

Total Weight, Piece Weight, Total Length, and

Total Area will be automatically calculated

sample calculations

Sheet Calculator


Pieces, Total Length, and Total Area

are automatically recalculated.

Note: Pieces will only be recalculated if Pieces

was the first value input. Otherwise the first

value entered, often Width since it is at the top

of the list, would be adjusted.

sample calculations

Finding Yield Difference

There are two quick ways to find

the Percent Yield Difference

between the NOM and MIN

decimals of a gauge, or between

two different gauges.

sample calculations


1. Quick Reference for % Yield Diff in Gauge to

Decimal Conversion

Open Conversions Screen and

check the %MIN-NOM

(%NOM-MAX is the same) or

%MIN-MAX. Multiply the % Yield

difference to specific values in

coils/bundles to get the difference

between each value.

sample calculations


2. Yield Difference Using the Coil or

Sheet Calculators

Enter a Coil or Sheet into the calculator

using the NOM or MIN decimal of a

Gauge, then change the decimal to

compare the Yield difference.

sample calculations



• ID: 20 inches

• OD: 44.5 inches


• Decimal: Min of 25 Gauge (.0207)

PIW, Length, Area and Weight will be

automatically calculated

• Length = 4,996 feet

sample calculations


2. Change Decimal to NOM of 25

Gauge (.0247)

Length and Weight are automatically

recalculated

• New Length = 4,187 feet

• Note that the Weight has not

changed

sample calculations


3. Decimal Yield Difference Formula:

Original Length – New Length

This example yields 809 linear feet

more material at the MIN decimal of 25

gauge than at the NOM decimal of 25

gauge (4,996 ft – 4,187 ft = 809 ft).

How To Use Unravel

Self Improvement

Transcript of How To Use Unravel