Adding Strength Together

[SSJ Archon]

How do Strengths add? Where can I find this info? I worked it out mathematically and came up with,

N=Strength Score

X=Lifting Capacity

2^(N/5-1)*50=X

5+5*Log[base 2] (X/50)=N

So if Person A has strength 5 and person B has strength 10, then the total is (Combine Lifting Capacity and convert to strength score)

100+50=150

5+5*Log[base 2] (150/50)=N=12.9248125

Is this right? It seems intuitive to me. If this info isn't already out there, then maybe this will help someone. Nah.

[Steve Long]

Re: Adding Strength Together

 

The rules for that are covered on pages 6-7 of The Ultimate Brick (and, IIRC, a couple other places as well, such as in regard to the Shove maneuver in UMA).

[Blue Jogger]

Re: Adding Strength Together

 

Yeah, that's right. If you like Javascript, it works out like this.

Your formulas seem to work out even with negative STR

(The dividing by log(2) is because computers use the natural log and you want log of base 2)

 

// num = number of people
// n[i] = strength of person i
// r1 = combined lifting capacity
// r2 = combined strength

n = new Array;
// populate n with values n[1]=10; n[2]=10; num=2;
r1=0;
for (i=1;(i<=num);i++)
 r1 += Math.pow(2,(n[i]/5.0)-1)*50

r2 = 5+5*Math.log(r1/50)/Math.log(2)

[Blue Jogger]

Re: Adding Strength Together

 

Although, now that I think about it, if you need to calculate net strength, just calculate the combined lifting capability and use the strength chart to calculate what STR can lift that.

 

If it is between two values (say STR 25 and 30) give a half die if it looks about halfway.

[CrosshairCollie]

Re: Adding Strength Together

 

As far as I've been able to figure, adding two identical Strengths effectively adds 5 to the total. Two bricks with 40 STRs combine into a 45.

 

If one Strength is 5 points lower than the other, you effectively add 3 to the higher Strength. So, 40+35=43.

 

I haven't done any tinkering with *3 or *8 STRs, because nobody ever has one.

[SSJ Archon]

Re: Adding Strength Together

 

Thanks! I'll be sure to add a Strength Combing Program to my calculator that I take to EVERY game.

[Sean Waters]

Re: Adding Strength Together

 

Each 5 STR doubles your lifting capacity, so 2 people of equal STR add 5, in effect, to determine how much they can lift, 4 people add 10 and so on. 2 STR 10 characters can lift the same as a STR 15 character, 4 can lift the same as a STR 20, 8 can lift as STR 25 and so on.

 

If there is a 5 point difference you can add half as much again, (or about 3 points). Two STR 10 characters and a STR 15 character have a lifting STR of 20 (10+10=15, 15+15=20)

 

If there is a 10 point difference, it adds a quarter as much again, and if there is mre than a 10 point difference, there's probably not much point adding in the extra strength unless a lot of people are helping or you really need to know down to the kilogramme.

 

Here's the strength progression per point from 0 to 15:

 

0....25.0

1....28.7

2....33.0

3....37.9

4....43.5

5....50.0

6....57.4

7....66.0

8....75.8

9....87.1

10..100.0

11..114.9

12..132.0

13..151.6

14..174.1

15..200.0

[Blue Jogger]

Re: Adding Strength Together

 

Thanks! I'll be sure to add a Strength Combing Program to my calculator that I take to EVERY game.

 

Fair enough, let's figure it out with TheRealLemmings lookup tables and using the fact that each +10 STR means that carrying capacity is increased by 4.

 

0....30.............10....100.............20....400.............30....1600

1....30.............11....110.............21....460.............31....1800

2....30.............12....130.............22....530.............32....2100

3....40.............13....150.............23....610.............33....2400

4....40.............14....170.............24....700.............34....2800

5....50.............15....200.............25....800.............35....3200

6....60.............16....230.............26....920.............36....3700

7....70.............17....260.............27....1100..........37....4200

8....80.............18....300.............28....1200..........38....4900

9....90.............19....350.............29....1400..........39....5600

 

You can keep extending this table (if needed)

Now add up everybody STR's carrying capacity and figure out which STR that is.

 

So three people, STR 8, STR 14, STR 22

80 + 170 + 530 = 780 which is pretty close to STR 25

 

EDIT: I round off the numbers to make it easier to calculate.

[Sean Waters]

Re: Adding Strength Together

 

If you have Excel, type the strength in column A and in column B the formula:

 

 

=POWER(2,(A1/5))*25

 

 

 

....assuming the relevant STR is in A1 you should get the lifting cpacity.

 

Can't add an Excel file to this, but I'll try and add a Word document that works....

[Sean Waters]

Re: Adding Strength Together

 

OK, seems to work on my machine, can you let me know if it works on yours?