# Why are man hole covers round? **URL:** \ **Category:** NYSpeed Off Topic\ **Created:** [January 17, 2008, 11:49am UTC](https://forums.speedlife.net/t/why-are-man-hole-covers-round/41996 "2008-01-17T11:49:51Z")\ **Posts on this page:** 8\ **Page:** 3
**Author:** ![FightinMike](https://avatars.discourse-cdn.com/v4/letter/f/7bcc69/32.png) [@FightinMike](https://forums.speedlife.net/u/FightinMike)\ **Post date:** [January 17, 2008, 2:12pm UTC](https://forums.speedlife.net/t/why-are-man-hole-covers-round/41996/41 "2008-01-17T14:12:39Z")
how is a 2 man team going to move a manhole cover if it were say square? round things roll. EDIT: Wow there is a actually a wiki on this question with 9 different answers. ---
**Author:** ![JUICEDSS](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/juicedss/32/7185_2.png) [@JUICEDSS](https://forums.speedlife.net/u/JUICEDSS)\ **Post date:** [January 17, 2008, 2:17pm UTC](https://forums.speedlife.net/t/why-are-man-hole-covers-round/41996/42 "2008-01-17T14:17:56Z")
> [@FormulaLS1"](#): > > I was at an interview in DC a couple weeks ago and this question came up. > > It’s a popular interview question used at Microsoft > > So with out looking up the possible answer post up… What company did you interview at? I used to ask that question to all candidates when I worked in DC. ---
**Author:** ![RedGoober4Life](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/redgoober4life/32/7610_2.png) [@RedGoober4Life](https://forums.speedlife.net/u/RedGoober4Life)\ **Post date:** [January 17, 2008, 2:58pm UTC](https://forums.speedlife.net/t/why-are-man-hole-covers-round/41996/43 "2008-01-17T14:58:35Z")
> [@Fry](#): > > The water level goes down. A buoyant object (like a boat/rock/person system) will displace an amount of water equal to its weight. A non-bouyant object like a rock will displace an amount of water equal to its volume. Since the rock is denser than water, an equal weight of water is more volume than the rock. Do you mean wolume? ---
**Author:** ![LZ1](https://avatars.discourse-cdn.com/v4/letter/l/7ab992/32.png) [@LZ1](https://forums.speedlife.net/u/LZ1)\ **Post date:** [January 17, 2008, 3:16pm UTC](https://forums.speedlife.net/t/why-are-man-hole-covers-round/41996/44 "2008-01-17T15:16:50Z")
> [@JUICEDSS](#): > > What company did you interview at? I used to ask that question to all candidates when I worked in DC. ReVision its a DoD contractor…Built the fiber san for the DoD/Pentagon and did a few other major projects. ---
**Author:** ![Geehee](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/geehee/32/7238_2.png) [@Geehee](https://forums.speedlife.net/u/Geehee)\ **Post date:** [January 17, 2008, 4:11pm UTC](https://forums.speedlife.net/t/why-are-man-hole-covers-round/41996/45 "2008-01-17T16:11:42Z")
> [@JUICEDSS](#): > > What company did you interview at? I used to ask that question to all candidates when I worked in DC. what were you looking for when you asked that question? ---
**Author:** ![MaximaSE98](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/maximase98/32/7600_2.png) [@MaximaSE98](https://forums.speedlife.net/u/MaximaSE98)\ **Post date:** [January 17, 2008, 4:12pm UTC](https://forums.speedlife.net/t/why-are-man-hole-covers-round/41996/46 "2008-01-17T16:12:48Z")
if they were sqaure they would be a basin…like a catch basin for storm drainage ---
**Author:** ![JUICEDSS](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/juicedss/32/7185_2.png) [@JUICEDSS](https://forums.speedlife.net/u/JUICEDSS)\ **Post date:** [January 17, 2008, 4:19pm UTC](https://forums.speedlife.net/t/why-are-man-hole-covers-round/41996/47 "2008-01-17T16:19:30Z")
> [@evolve](#): > > what were you looking for when you asked that question? Nothing in particular. Just a question followed by my comment. ---
**Author:** ![walter](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/walter/32/7202_2.png) [@walter](https://forums.speedlife.net/u/walter)\ **Post date:** [January 18, 2008, 7:43am UTC](https://forums.speedlife.net/t/why-are-man-hole-covers-round/41996/48 "2008-01-18T07:43:07Z")
> [@ILCisDEAD](#): > > umm… the water level would stay the same… > > edit: thinking into it more… I guess the density of the rock would come into play and by thinking, you mean reading the previously posted answer :gtfo: [Previous page](https://forums.speedlife.net/t/why-are-man-hole-covers-round/41996.md?page=2)