Design of a single-storey, single-span, industrial building from wooden structures

Contents

Introduction

Design Input (Job)

Design of single-storey single-span buildings for different purposes made of wood and plastics

Structural diagram of the building

Calculation of the coating glue plate

Design and calculation of a three-ball frame from straight elements

Constructing a Reference Node

Skate Assembly Design

Calculation of wall panel with asbestos cement cladding

Calculation of the end frame strut

List of literature

Introduction

The purpose of the course work is to introduce students to the list of questions included in the work program of the course "Structures made of wood and plastics" with an indication of the sources in which the answers are found; presentation of initial data for course work with instructions on its implementation.

In the course of course work, students should familiarize themselves with wooden structures as such, their work and applications in industrial and civil engineering (in particular industrial).

Structural diagram of the building

Bearing crossbars of the structure are taken in the form of three-ball glued frames, the pitch of which in accordance with the task B = "4"... 6 m. The pitch of the extreme frames is shortened by 0.5 m to allow the installation of cornices in the ends of the building using the same type of coating plates. The spatial rigidity of the building is provided by the communication system (Fig. 3): vertical connections installed in the plane of the frame posts; coupling trusses placed between the cornice frame assemblies; links in the plane of frame girders.

Enclosing structures are adopted in the form of heat-insulated gluefaner slabs and wall panels with asbestos cement skins.

Plywood slabs consist of a frame and shelves (skins). Longitudinal and transverse bearing ribs of the frame are made of solid boards with a thickness of 36 or 46 mm.. For the skin, waterproof construction plywood of the FSF brand is used. The thickness of the lower skin must be at least 6 mm, the upper 8 mm. Skin is connected to ribs with water-resistant synthetic adhesives. The direction of the fibers of the outer veneers of plywood in both the upper and lower skin of the plate should be longitudinal to ensure that the plywood sheets are docked "on the mustache" and to better utilize the strength of the plywood. In insulated slabs with plywood cladding, it is recommended to use insulation from non-combustible or difficult-to-burn materials (mineral wool slabs on a synthetic binder, from glass staple fiber) with a volumetric mass of ¼ u = 100... 300 kg/m3 or foam of the FR-1 brand with a volumetric mass of ¼ u = 50... 100 kg/m3. Thickness of insulation δu shall be determined by thermophysical calculation. For this course project, it is taken structurally equal to 510 cm, depending on the construction area. In order to avoid displacement during transportation and installation, the soft insulation is fixed with pressure grids made of wooden bars with a section of 25 × 25 mm, connecting with the frame with nails. Steam insulation is used from rolled materials. Longitudinal wooden ribs are made of softwood that meet the requirements not lower than the second class and put them at a distance of not more than 500 mm. Dimensions of longitudinal ribs are assigned by calculation. The structure of the coating plate is shown in Fig. 5. Coating plates are rigidly attached to frame girders. After compaction of joints, a layer of ruberoid on bitumen mastic is poured over the upper skin. The calculation of the insulated adhesive coating plate is given below.

derevo 14.05.12.dwg