How tall is this light post? Pic inside

[RIGorous1]

Picture here Light post is on the left

I'm doing an evaluation of the lighting at USC and without actually measuring I can't tell how tall that post is. I'm thinking its 25, but I can't tell. Use the background as a guide, but don't forget that further things look smaller. I took this diagonal shot so that you can get a sense of depth.

 

[quakefiend420]

personally i think its 30...but i could be wrong

 

[saltedeggman]

30

 

[Heisenberg]

Yeah, judging by the van, I'd say 30.

 

[Baked]

Aren't the height of light posts standardized?

 

[Zenmervolt]

Put a stick of a known length in the ground near the post. Measure the length of the stick's shadow. Measure the length of the post's shadow.

Since you know the stick's length, find the ratio of shadow length to stick length. Use this ratio and the length of the post's shadow to calculate the length of the post.

ZV

EDIT: You're in college and you don't know to use this method?

 

[meltdown75]

25

 

[EvilYoda]

Run over there, measure the shadow and the angle and use trig 😉

 

[Zenmervolt]

Originally posted by: EvilYoda
Run over there, measure the shadow and the angle and use trig 😉

Using trig would require that you measure the angle at which the sun is hitting the post. Much easier to use geometry and the method that I've outlined above. 😛

ZV

 

[SilentZero]

30

 

[RIGorous1]

Originally posted by: Zenmervolt
Put a stick of a known length in the ground near the post. Measure the length of the stick's shadow. Measure the length of the post's shadow.

Since you know the stick's length, find the ratio of shadow length to stick length. Use this ratio and the length of the post's shadow to calculate the length of the post.

ZV

EDIT: You're in college and you don't know to use this method?

I know I could do this, but I don't want to go back on campus to take the readings. I was too busy counting the # of lights on campus that I forget to take into consideration the heights.

 

[RIGorous1]

Originally posted by: Baked
Aren't the height of light posts standardized?

yes, the standards are 20, 25, and 30 🙂

 

[RIGorous1]

hrm... split vote...

 

[rezinn]

The light posts on 34th street are 24 feet tall.

 

[bret]

doesnt the shadow get longer and shorter during different times of the day?

 

[aplefka]

Originally posted by: bret
doesnt the shadow get longer and shorter during different times of the day?

Yes, but the length of the sticks shadow would too proportionately, so it'd still be close to accurate.

 

[deftron]

The one in the foreground is definitely 30

The one by the van is 20

 

[myusername]

After rigorous analysis, I have concluded that the pole is 25 feet tall and USC is populated with midgets.





And I can't believe you missed the opportunity for a pole pole/pohl/powl/poal post.

 

[YOyoYOhowsDAjello]

Originally posted by: myusername
After rigorous analysis, I have concluded that the pole is 25 feet tall and USC is populated with midgets.





And I can't believe you missed the opportunity for a pole pole/pohl/powl/poal post.

LMAO

 

[jagec]

I'd guess 30

 

[shimsham]

callin the parking sign beside it 10 ft, id say the pole was 30.

 

[Sukhoi]

Just follow the idea of the drunks on campus here, and knock one over!

 

[imported_Phil]

Originally posted by: myusername
After rigorous analysis, I have concluded that the pole is 25 feet tall and USC is populated with midgets.





And I can't believe you missed the opportunity for a pole pole/pohl/powl/poal post.

😕:shocked:

You can work it out like that? :Q

 

[BillyBatson]

that is easily 30 feet, just picture 10 feet then double there is no way it would reach the top
look at the sign next to the post it is prob 10ft itself

 

[Sukhoi]

Originally posted by: Phil

Originally posted by: myusername
After rigorous analysis, I have concluded that the pole is 25 feet tall and USC is populated with midgets.





And I can't believe you missed the opportunity for a pole pole/pohl/powl/poal post.

😕:shocked:

You can work it out like that? :Q

I think it would only work if everything in the picture was at the same distance.