SBMS Posted October 26 Share Posted October 26 Our floor joist designer has asked for the point load for a set of stairs where they attach to the landing, for calculating the engineered trimmer. This landing corner floats where the stairs attach and the joists cantilever over another wall to provide the landing so I assume the flooring engineer needs the load to ensure the joists are sufficiently strapped down. We are going to use Stairbox for our stairs - who tell us that they are self supporting and only need attaching at the bottom and top (no drilling through stringers needed). I asked Stairbox if they can provide the point load but they said they don’t provide this. I asked our structural engineer who said he can calculate it but needs the self weight of the stairs - is that just the total weight of the stairs or something else? Has anyone had any experience getting any of this info from Stairbox? Currently I have a conversation with ‘sales’ and am wondering if there’s more technical Support that can give better answers to engineering or structural questions? Link to comment Share on other sites More sharing options...
Alan Ambrose Posted October 26 Share Posted October 26 >>> self weight of the stairs - is that just the total weight of the stairs or something else? Yes, including balustrades etc. Your SE will then allow for suitable 'live' loads (e.g. all your guests at a party standing and admiring your build) - actually the number is probably specced in the regs somewhere. Then they'll calc the loads to be supported at the top and bottom. 1 Link to comment Share on other sites More sharing options...
Mr Punter Posted October 26 Share Posted October 26 If you add your stair to the basket in stairbox it will show the weight. I had 2 flights, 1 was 150kg, the other was 200kg. They were commercial spec. Link to comment Share on other sites More sharing options...
SBMS Posted October 26 Author Share Posted October 26 1 hour ago, Mr Punter said: If you add your stair to the basket in stairbox it will show the weight. I had 2 flights, 1 was 150kg, the other was 200kg. They were commercial spec. Thanks @Mr Punter just seen this! That’s great. out of interest, what is ‘commercial spec’? Link to comment Share on other sites More sharing options...
Mr Punter Posted October 26 Share Posted October 26 1 hour ago, SBMS said: Thanks @Mr Punter just seen this! That’s great. out of interest, what is ‘commercial spec’? These were communal stairs for flats, so 250mm going per tread and lower pitch. We also used chunkier materials to hopefully mitigate noise. Link to comment Share on other sites More sharing options...
SBMS Posted October 26 Author Share Posted October 26 31 minutes ago, Mr Punter said: These were communal stairs for flats, so 250mm going per tread and lower pitch. We also used chunkier materials to hopefully mitigate noise. I get you. How do you specify chunkier materials with Stairbox or was this just their standard 32mm pine? Link to comment Share on other sites More sharing options...
Mr Punter Posted October 26 Share Posted October 26 Yes 32mm treads. No MDF. They are well made. Link to comment Share on other sites More sharing options...
SBMS Posted October 26 Author Share Posted October 26 2 minutes ago, Mr Punter said: Yes 32mm treads. No MDF. They are well made. Thanks @Mr Punter am I right in thinking they’re self supporting? No need to secure anywhere other than at the top and bottom and not through the stringers? This is for a set that goes from the first to second floor so don’t bear onto the floor and just connect to the floor trimmers. Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now