Glulam Shed - Structural Drawings - Complete Structural Drawings [1-24]

Oct 24, 2026

Upload by dhado

Complete structural drawing set and design notes for a glulam shed, covering roof truss and framing arrangements, load assumptions, and design checks. Includes cold-formed RHS/SHS based truss design concepts, span and slope combinations for multiple wind zones, and analysis assumptions for member connections, effective lengths, buckling resistance, and deflection limits. Provides design codes and loading data using IS:806, IS:4923, and IS:875-87, plus fabrication detailing guidance and drawing index references for the project.

LanguageEnglish

CategoryResearch & Report

FormatPDF

Pages24

Reading Time1 h 0 min

AccessFree to download

General Notes

Design Data

Load Assumptions and Analysis Criteria

Project Drawings and Layout Plans

Site Plan

Pedestal Layout

Foundation Layout Plan

| General Notes
Roof trusses, purlins, side girts, etc. for industrial sheds are designed with cold-finished RHS/SHS manufactured by Tata Steel Tubes SBU.
Pitched roof trusses for rectangular clad buildings of 14 different spans, lean-to trusses of 2 different spans, and portal frames of 5 different spans for six wind zones (as mapped by Bureau of Indian Standards), and each span having two different slopes i.e., 1 in 3 and 1 in 4 for trusses, and 1 in 10 slope for portal frames above 15 m span, have been considered to cover various practical combinations of roof systems and existing manufacturing practices in the country. Truss configurations for different spans have been arrived at after trial and error, considering overall economy in terms of savings in weight and ease of manufacturing. However, other configurations may also be tried.
Trusses have been analysed assuming rigid member-to-member connections except at ridge and hanger joints. The designs have been prepared for simply supported conditions and reaction values have been tabulated accordingly. Trusses have been analysed for Dead Load, Superimposed Load, Wind Load, and combinations thereof according to IS:875-87 . Only nodal loads have been considered for the purlins to be located strictly at node points, based on the maximum allowable span of G.I. sheeting. For other roofing material allowing longer spans, suitable changes in truss configurations should be tried.
For wind load combinations, allowable stresses have been increased by 33.33% as per provision of IS:806 .
Effective length of each member has been assumed to be 0.85 times the node-to-node distance. In case of compression loading, members have been designed against buckling in and out of the plane of the truss.
Maximum slenderness ratio for compression members has been restricted to 180. Maximum deflection of mid-span node of truss has been restricted to span/325 .
As RHS/SHS are still considered non-conventional sections, typical fabrication detailing for different spans has been incorporated so that practising structural engineers may find it helpful as a ready
reference.
Design Data
Design Code: IS:806, use of hollow section for general construction in Steel Material : IS:4923
Grade: YST 310 Design Loading :
1. Dead Load
i) G.I sheeting & fastener = 0.60 KN/m ²
ii) Purlins = As per Purlin Table
iii) Truss, tie member etc = Actual RHS/SHS wt + 5% of truss weight due to gusset plate etc. | 1. Imposed Load per m ² plan area (for truss design):
Ref. IS: 875,87, part 2 CL 4.5.1 & table 2
Roof slope 1 in 3 = 0.667 × (0.75-8.435 × 0.02)= 0.3875 KN/m ² hence 0.4 KN/m ²
Roof slope 1 in 4 = 0.667 × (0.75-4.036 × 0.02)= 0.446 KN/m ²
2. Wind Load:
Refer IS : B75-1987, Part 3
Wind Zone Zone I Zone II Zone III Zone IV Zone V Zone VI Wind Speed 􀀙􀀙 m/s 􀀙 m/s 􀀚􀀚 m/s 􀀚􀀝 m/s 􀀛􀀖 m/s 􀀛􀀛 m/s Design Wind Pressure in N/m ² 􀀜􀀛􀀙􀀔􀀚 􀀗􀀘􀀔􀀜 􀀗􀀗􀀜􀀘 􀀗􀀙􀀘􀀛 􀀗􀀛􀀖􀀖 􀀗􀀞􀀗􀀛
| | --- | --- | |

49965.00

45000.00

19924.45
18000.00
| | | | | | | | --- | --- | --- | --- | --- | --- | --- | | PROJECT | LOCATION | | DRAWING | | | ENGINEER | | Construction of Glulam Shed 50m x 20m x 4m | NRDCL Sawmill Area Ramtokto | | SITE PLAN | GL-00 |

N | BISHAL SUBBANRDCL, HO | | | Note:
· Drawings are to be read only and not to be measured.
· All dimensions are in millimeters unless stated otherwise. | When in doubt, please ask, do not assume. | Scale: NTS | | | | |
GOOD FOR CONSTRUCTION
800
800
800
800
800
800
800
800
800
6400
400 400 == ==
400 400 == ==
6400 6400
19200 C/C OF ST

FAQs

What materials and design sections are used for the roof trusses and related members?

Roof members such as trusses and purlins are designed with cold-finished RHS/SHS manufactured by Tata Steel Tubes SBU, using typical fabrication detailing for different spans.

Which design codes and loading types are referenced for the structural checks?

Design notes reference IS:806 for hollow section construction and IS:875-87 for dead, superimposed, and wind load design combinations; additional wind load provisions are also cited.

How are wind load combinations and allowable stresses handled?

For wind load combinations, allowable stresses are increased by 33.33% as per the cited IS:806 provision.

Oct 24, 2026

Upload by dhado