Math Questions

Question 1

The rule of thumb for outrigger pad blocking is that it should be at least 3 times larger than the float. What is the blocking area required when using a 18” diameter float? Round your answer to the nearest whole number.

Answer 1

A = πr^2
A = (3.14)(18”)^2
A = (3.14)(324)
A = 1017.36
A = 1017

Question 2

If you are placing a ladder against a building that is 14 feet high, how far away should the ladder be from the building in feet and inches?

Answer 2

ladders should be placed using a 4:1 ratio
25% of 14 ft: 14 x 0.25 = 3.5 ft
3.5 ft = 3 ft 6 inches

Question 3

27’ base has a guy line 38’ high. How long of wire rope is required?

Answer 3

c^2= a^2 + b^2
c^2 = 27^2 + 38^2
C^2 = 729 + 1444
c^2 = 2173
c = square root 2173
c = 46.6 feet

Question 4

If you are placing a ladder against a building that is 18 feet high, how far away should the ladder be from the building in feet and inches?

Answer 4

ladders should be placed using a 4:1 ratio
25% of 18 ft: 18 x 0.25 = 4.5 ft
4.5 ft = 4 ft 6 inches

Question 5

A 25 foot guy wire is used at a 19 foot height. How wide is the base?

Answer 5

c^2 = a^2 + b^2
25^2 = 19^2 + b^2
625 = 361 + b ^2
625 - 361 = b^2
264 = b^2
16.2 = b