Avatar
Search
Forum Scope


Match



Forum Options



Minimum search word length is 3 characters - maximum search word length is 84 characters
Lost password?
sp_Feed sp_TopicIcon
stringer supported landing
Avatar
Ness

Forum Posts: 1860
Subscriber Since:
October 4, 2012
Thanked 530 times in 1860 posts
Reputation: 22557
sp_UserOfflineSmall Offline
7
April 11, 2019 - 8:30 am
sp_Permalink sp_Print

Hi Duayne,

With steps that thick you certainly don’t need intermediate support over a span of 1000mm.

Best regards,

Ness

Avatar
Duayne Naugle

Forum Posts: 73
Subscriber Since:
March 1, 2015
Thanked 4 times in 73 posts
Reputation: 470
sp_UserOfflineSmall Offline
6
April 11, 2019 - 1:39 am
sp_Permalink sp_Print

Ness said
Hi Duayne,

From the file you sent your stair is 1066mm wide with 30mm thick steps and no risers.

At this width and step thickness without risers, it’s possible that steps will be slightly weak and although not a problem for general domestic usage, they might have a tendency to flex with heavy loads.

However, I wouldn’t put a central support string for this  type of stair as this would hamper the elegance of the open riser design.

To increase the bend strength of the steps without intermediate support, you can either increase the step thickness to around 45mm or insert a lower partial riser glued to the underside of the steps. This would also reduce the inter step spacing which can cause problems with building regulations.

riser-120.pngImage Enlarger

I attach the stair file as an example.

Best regards,

Ness

  

The treads thickness is  actually 69.85mm or 2 3/4” thick . the landing is not an issue anymore. 

Avatar
Ness

Forum Posts: 1860
Subscriber Since:
October 4, 2012
Thanked 530 times in 1860 posts
Reputation: 22557
sp_UserOfflineSmall Offline
5
April 10, 2019 - 6:20 am
sp_Permalink sp_Print

Hi Duayne,

From the file you sent your stair is 1066mm wide with 30mm thick steps and no risers.

At this width and step thickness without risers, it’s possible that steps will be slightly weak and although not a problem for general domestic usage, they might have a tendency to flex with heavy loads.

However, I wouldn’t put a central support string for this  type of stair as this would hamper the elegance of the open riser design.

To increase the bend strength of the steps without intermediate support, you can either increase the step thickness to around 45mm or insert a lower partial riser glued to the underside of the steps. This would also reduce the inter step spacing which can cause problems with building regulations.

riser-120.pngImage Enlarger

I attach the stair file as an example.

Best regards,

Ness

sp_PlupAttachments Attachments
Avatar
Duayne Naugle

Forum Posts: 73
Subscriber Since:
March 1, 2015
Thanked 4 times in 73 posts
Reputation: 470
sp_UserOfflineSmall Offline
4
February 25, 2019 - 11:08 pm
sp_Permalink sp_Print

i had to email the stair designer file  from my windows machine to my Mac in order to upload the file , hopefully this works !

Avatar
Duayne Naugle

Forum Posts: 73
Subscriber Since:
March 1, 2015
Thanked 4 times in 73 posts
Reputation: 470
sp_UserOfflineSmall Offline
3
February 24, 2019 - 12:20 am
sp_Permalink sp_Print sp_EditHistory

Unfortunately , I can’t reply to this post with my windows computer which contains the stairDesigner files , this was done on my iPad 

Avatar
Ness

Forum Posts: 1860
Subscriber Since:
October 4, 2012
Thanked 530 times in 1860 posts
Reputation: 22557
sp_UserOfflineSmall Offline
2
February 23, 2019 - 2:30 pm
sp_Permalink sp_Print

Hi Duayne,

Sorry to get back so late, but I’ve been away doing on site training for the last week.

This type of stair if fairly classic but the way you build it depends on the sizes of stair and also the dimensions of the wood you are thinking of using. the number of variations can be quite complexe so to advise you correctly and get a better understanding of you project it would be good to have some drawings as well as the specs of the string sections, step thickness and how you are thinking of building the landing.

If I’ve understood your question, the length of the landing is 88″ and supported by the stringers each side, so with a depth of stair 48″ and depending on the step thickness you might need a central support carriage for steps and landing. In this case depending on how the stair is supported against the right wall you might need to create a joist structure under the landing. this also depends on the thickness of the boards used to build the landing.

With the information you have posted we can’t really give you more detail.

If can post a plan and some sizes we will be able to look more closely.

Best regards,

Ness

Avatar
Duayne Naugle

Forum Posts: 73
Subscriber Since:
March 1, 2015
Thanked 4 times in 73 posts
Reputation: 470
sp_UserOfflineSmall Offline
1
February 17, 2019 - 3:13 am
sp_Permalink sp_Print

Stringer supported landing: i have a stairway to price up that is to have a open styled landing like the picture below  , the landing is  to be 42′ deep by 88″ wide in a split level type of stair ,  since this would be my first time on a landing like this i have a  question , what would be the maximum span that i can safely incorporate into the stringer? Is there anything i could do to maker it work ?

 The back of the landing will be 1 ft. away from the back wall  

 IMG_0415.jpgImage Enlarger

sp_PlupAttachments Attachments
Forum Timezone: Europe/London
Most Users Ever Online: 70
Currently Online:
14
Guest(s)
Currently Browsing this Page:
1 Guest(s)
Top Posters:
terry: 253
mark nichols: 119
jimbouk: 105
Christopher Paré: 97
syslab: 97
Jack Travis: 77
Duayne Naugle: 73
Tom Cleaver: 63
Rafal Meckovski: 62
Peter Brown: 62
Newest Members:
Anthony Elias
marcelo villares
Donna Forfylow
Avijit Chakravorty
kasim atwan
C Biswas
adolfo alarcon
adolfo alarcon
Pencho Petkov
Matt Ciesicki
Forum Stats:
Groups: 2
Forums: 8
Topics: 1112
Posts: 6456

 

Member Stats:
Guest Posters: 3
Members: 98722
Moderators: 1
Admins: 7
Administrators: Ness, Stefan, michel melon, Carole Bosy, admin, Sunil Jaiswal, ipatrick
Moderators: Alex