Timber structures

Explanatory paper 2
1. Calculation of load 3
1.1 Permanent loads 3
1.2 Snow load 3
2. Design of timber deck and purlins 4
2.1 Design of timber deck 4
2.2 Design of purlins 6
2.3 Joint of the boards 7
3. Dimensioning of timber glued laminated beam. Design and detailing of joints 10
3.1 Dimensioning of timber glued laminated beam 10
4. Design of timber beam joint to column 13
Drawings
Explanation paper:
The building, which is designed in this course project, is a commercial (warehouse) building. It is situated in Utena. Calculations of timber roof structures are presented in this project. All structures are made from pine timber (and grades). Also there are used steel details in connection of timber column and double-tapered glued-laminated timber beam, and steel of grade C 245 is used. The length of building is 12x5.0m and the width is 21.0m. Distance from the level of the floor to bottom of the beam is 4.8m. Roof of the building is thermally insulated using ROCKWOOL flat roof slabs. The building is braced in both longitudinal and lateral directions; also there are bracings in roof structures.
1. Calculation of loads and internal forces
1.1 Permanent load (self weight of roof structures)
Permanent load per m2 of roof:
No
Element
Characteristic
Load Pa
Load factor
Design load
, Pa
1.
Hydro insulation
60
1.3
78
2.
Thermal insulation: ROCK Wool slab
=1700Nm3
255
1.3
331.5
3.
Vapor insulation
5
1.3
6.5
4.
Timber deck,
=5000Nm3
160
1.1
176
5.
Total
=480
=592
1.2 Snow load
Snow load depend on location of the building.
Characteristic snow load:
Here: -coefficient depending from type of roof (=1, for 250); - snow load to square meter of horizontal projection of the roof (taken from design codes for Action and loads STR 2.05.04:2003); - thermal coefficient, usually equal 1.0
My building is situated in Utena and therefore (2nd snow region)
;
Design snow load:
;
Here Q=1.3 -snow load partial safety factor.
;
2. Design of timber deck and purlins
2.1 Design of timber deck.
Structural scheme of timber deck is two span continuous beams. Timber decks are checked for two design situations:
1 design...

Daugiau informacijos...

★ Klientai rekomenduoja

Šį rašto darbą rekomenduoja mūsų klientai. Ką tai reiškia?

Mūsų svetainėje pateikiama dešimtys tūkstančių skirtingų rašto darbų, kuriuos įkėlė daugybė moksleivių ir studentų su skirtingais gabumais. Būtent šis rašto darbas yra patikrintas specialistų ir rekomenduojamas kitų klientų, kurie po atsisiuntimo įvertino šį mokslo darbą teigiamai. Todėl galite būti tikri, kad šis pasirinkimas geriausias!