# Calculate the height of a building

by pardesi
Tags: building, height
 P: 339 Design a method to calculate the height of a building?this is an engineering design question.... URGENT!!! ...i need inputs !!
 Sci Advisor HW Helper P: 8,953 You have to make an attempt. What methods can you think of? Can you approach the building, what tools are you allowed?
 P: 339 ya i do have my method ...the method i use is we can use trigonometry(the std method) where using a sextant like instrument to measure the angle and use similarity knowing my height any other non trivial methods or say innovatyive wud be appriciated
 Sci Advisor HW Helper P: 8,953 Calculate the height of a building If this were a real engineering question the answer would just be use a total station or an RTK-GPS but presumably you are expected to come up with many different ways. Most involve trig and similair triangles. Like measuring the length of a shadow from a stick of known height and comparing it to the length of the shadow from the building.
 P: 339 what are total stations and RTK GPS
 Sci Advisor HW Helper P: 8,953 A total station is a theodolite with a laser rangefinder, since it can measure 2 angles (the theodolite part) and distance (the laser) you can measure the relative position of anything you can see with high accuracy (mm). RTK-GPS is a special type of GPS receiver that can measure the relative position between a pair of them to high accuracy (a few mm). See wikipedia for details - or a survey supplies company. As I said it depends wether this is a homework or an engineering question.
 P: 1,672 I like the throwing a pencil off the roof method.