What regulations should be complied with for the butt and lap of scaffolding poles

Scaffold. What regulations should be complied with for the butt and lap of the pole are as follows:

When the vertical rod adopts the butt joint length, the butt fasteners of the vertical rod should be staggered, the joints of the two adjacent vertical rods should not be arranged in the synchronization, and the distance between the two separated joints of the vertical rod in the height direction should not be less than 500

The distance from the center of each joint to the main node should not be greater than 1 3 of the step distance

The longitudinal horizontal rod should be arranged on the inner side of the vertical rod, and its length should not be less than 3 spans, and the longitudinal horizontal rod can be used butt fastener, and lap joints can also be adopted. If the butt fastener method is adopted, the butt fasteners should be staggered; If lap connection is used, the lap length should not be less than 1

m, and 3 rotating fasteners should be fixed at equal intervals.

A transverse horizontal rod must be set at the main node of the scaffold (that is, the fastening point where the three rods of the vertical rod, the longitudinal horizontal rod and the transverse horizontal rod are close together) and it is strictly forbidden to dismantle it. The center distance between the two right-angle fasteners at the main node should not be 150mm larger. In double-row scaffolding, the extension length of one end of the transverse horizontal rod against the wall should not be greater than the times of the horizontal distance of the vertical rod, and should not be greater than 500mm; The transverse horizontal rod at the non-main node on the working layer should be supported according to the scaffold board.

The maximum spacing should not be greater than 1 2 of the longitudinal distance.

Scaffolding

Refers to the construction site.

A variety of brackets erected for workers to operate and solve vertical and horizontal transportation. A general term used in the construction industry to refer to the construction site used in the exterior wall, interior decoration or high floor height where direct construction is not possible. Mainly for the construction personnel to work up and down or the maintenance of the perimeter safety net and high-altitude installation components, etc., to put it bluntly, it is to build a shelf, scaffolding production materials usually are:

Bamboo, wood, steel pipes or synthetic materials, etc. Scaffolding is also used as a formwork in some projects, and it is also widely used in advertising, municipal, transportation, roads and bridges, mines and other departments.

The design regulations of fastener type steel pipe scaffold pole are:

1. A base or backing plate should be set at the bottom of each pole.

2. The scaffold must be provided with longitudinal and horizontal sweeping rods. The longitudinal sweeping rod should be fixed with right-angle fasteners not more than 200mm from the bottom end of the steel pipe

on the pole. The transverse sweeping rod should be fixed on the vertical rod immediately below the longitudinal sweeping rod with right-angle fasteners.

3. When the foundation of the scaffold pole is not at the same height, the longitudinal sweeping rod at the height must be extended to the low place by two spans and fixed with the pole, and the height difference should not be greater than 1m. The distance from the axis of the upright pole above the slope to the slope should not be less than 500mm.

4. The step distance between the bottom of single and double row scaffolding should not be greater than 2m.

5. In addition to the top step, the joints of each step of each layer of each layer must be connected by butt fasteners.

6. The butt and lap of the scaffold pole shall comply with the following provisions:

1) When the vertical rod adopts the butt joint length, the butt fasteners of the vertical rod should be staggered, the joints of the two adjacent vertical rods should not be arranged in the synchronization, and the distance between the two separated joints of the vertical rod in the height direction should not be less than 500

The distance from the center of each joint to the main node should not be greater than 1 3 of the step distance

2) When the pole adopts lap length, the lap length should not be less than 1m

and should adopt no less than 2

Rotating fasteners are fixed. The distance from the edge of the end fastener cover to the end of the rod should not be less than 100mm.

7. The railing at the top of the scaffold pole should be 1m higher than the upper end of the parapet wall and the upper end of the cornice.

1. The joints of all two adjacent longitudinal horizontal rods should not be set at the same time, that is, the joints of the inner and outer horizontal rods of the same step should be staggered by a span, and the joints of the upper and lower horizontal rods in a span should also be staggered, which is what it means;

The distance between two adjacent joints in the horizontal direction should not be less than 500mm when they are not synchronized or spanned; The meaning of this sentence is that although it is staggered, it must be ensured that the distance of the staggered is greater than 500mm;

The distance from the center of each joint to the nearest main node should not be greater than 1 3 of the longitudinal distanceThis sentence means that the position of the joint should be controlled within 1 3 of the main node, and the main node is the intersection point of the vertical rod, the longitudinal horizontal rod and the transverse small crossbar of each step, such as the step distance meter, and the position of the vertical rod joint should be guaranteed to be within or above the meter.

The description is laborious, and it is easy to understand at a glance when you get to the scene.

Scaffolding is a temporary construction tool erected on the construction site for workers to operate and solve vertical and horizontal transportation. It is mainly used in the exterior wall, interior decoration or high floor height can not be directly constructed, mainly for the construction personnel to work up and down or the maintenance of the perimeter safety net and high-altitude installation components, etc., its production materials are usually bamboo, wood, steel pipes or synthetic materials.

Answer]: The butt and lap joints of a large crossbar should comply with the following provisions: (1) The butt fasteners of the large crossbar should be staggered.

The joints of two adjacent large crossbars should not be arranged in the synchronization or the same span; The distance between the two adjacent joints in the horizontal direction should not be less than 500mm; The distance from the center of each joint to the nearest main node should not be greater than 1 3 of the longitudinal distance. (2) The lap length should not be less than 1m, 3 rotating fasteners should be fixed at equal intervals, and the distance from the edge of the fastener cover plate of the end file to the end of the large crossbar should not be less than 100mm. (3) When stamping steel scaffolding, wooden scaffolding, and bamboo string scaffolding are used, the large crossbar should be used as the support of the small crossbar and fixed on the vertical rod with right-angle fasteners; When using bamboo fence scaffolding, the large crossbar should be fixed on the small crossbar with right-angle fasteners, and should be set at equal intervals, and the spacing should not be greater than 400mm.

Answer] Luna: a

B selection of ant digging items, the joint of two adjacent rods should not be set in the synchronization or the same span; c option, out of sync early object is no different, across two adjacent joints in the horizontal direction staggered distance at least 500mm; Option d, the distance from the edge of the end fastener cover to the end of the longitudinal horizontal rod is not less than 100mm.

Answer] Luna: a

B selection of ant digging items, the joints of two adjacent rods are not officially arranged in the synchronization or the same span; c option, out of sync early object is no different, across two adjacent joints in the horizontal direction staggered distance at least 500mm; Option d, the distance from the edge of the end fastener cover to the end of the longitudinal horizontal rod is not less than 100mm.

When erecting scaffolding poles, the regulations that should be observed are ().

a.The steel wire and structure are fixed, and after the pole is erected to the top, then turn back and install the wall pieces.

b.Adjacent starter butt fasteners can all be in the same horizontal plane.

c.When erecting the pole, it is not necessary to set up the wheel brace for throwing and withering, and it can be erected all the way to the top.

d.Set up a throwing brace every 6 spans until the connecting wall pieces are installed to stabilize the stove letter, and then remove it (correct answer).

Answer] :d 1) A base should be set at the bottom of each pole, and a backing plate should be set under the beam grip seat.

2) The step distance between the bottom layer of the slag transportation scaffold should not be greater than 2m.

3) The pole must be reliably connected with the building with wall pieces.

4) In addition to the top of the top layer, the rest of the layers must be connected by butt fasteners.

5) The lap length should not be less than 1m, and it should be fixed with no less than two rotating buckle ruler beams, and the distance from the edge of the end fastener cover plate to the rod end should not be less than 100mm.

6. The top railing of the scaffolding pole should be 1m higher than the upper end of the parapet wall; It should be higher than the upper end of the cornice.

Dear, I am glad to answer for you: the vertical oblique rod of the scaffold should be answered, the vertical oblique rod of the scaffold should be made of steel pipe fasteners, and the vertical oblique rod layout type should meet the requirements of the table. In addition, the installation and removal of scaffolding, inspection and acceptance of foundation bending, safety management and maintenance have been further regulated, and the release of the 2021 version of the "Standard" not only provides industry guidance for scaffolding in the construction process.

Scaffolding is a working platform erected to ensure the smooth progress of each construction process. According to the position of erection, it is divided into outer scaffolding and inner scaffolding; According to different materials, it can be divided into wood scaffolding, bamboo scaffolding, and steel pipe scaffolding; According to the structural form, it can be divided into pole scaffolding, bridge scaffolding, Botan boring door scaffolding, hanging scaffolding, hanging scaffolding, pick-type letter bar scaffolding, and climbing scaffolding.