Φ10 @ 100/200 (2) indicates that the stirrup is Φ10, the spacing between encrypted areas is100, and the spacing between unencrypted areas is 200, all of which are double-limb hoops. ?
Φ10 @ 100/200 (4) indicates that the stirrup is Φ10, the spacing between encrypted areas is100, and the spacing between unencrypted areas is 200, all of which are four-legged hoops. ?
Φ 8 @ 200 (2) indicates that the stirrup is Φ 8, the spacing is 200, and the two legs are hoops. ?
Φ 8 @ 100 (4)/150 (2) indicates that the stirrup is Φ 8, the spacing between the encrypted areas is100, the four-limb hoop, the spacing between the unencrypted areas is150, and the two-limb hoop.
Extended data:
Rebar symbols refer to rebar parameter symbols, etc. The unit of measurement for calculating the theoretical weight of steel is kilogram (kg). Steel processing, steel processing table and design review, check whether there is any error in the blanking table.
Each kind of steel bar should be inspected according to the bill of materials to see if it meets the requirements. After these two inspections, the samples should be released according to the bill of materials, and mass production can only be carried out after the trial production is qualified. Processed steel bars should be listed and stacked neatly.
Steel bar making?
Steel processing, steel processing table and design drawings must be rechecked, and check whether there is any mistake or omission in the blanking table. Check whether each steel bar meets the requirements according to the material list. After these two inspections, release the samples according to the blanking table, and mass production can only be carried out after the trial production is qualified. Processed steel bars should be listed and piled up neatly and orderly.
If it is necessary to replace steel bars during construction, we must fully understand the design intent and the performance of the replacement materials, strictly abide by the provisions of the current reinforced concrete design code, and do not replace low-strength steel bars with high-strength steel bars of equal area. All the important parts of the steel bar replacement, must obtain the consent of Party A and the design unit, and issue a written notice before replacement. ?
(1) The surface of steel bar should be clean, and the attached oil stain, dirt and floating rust must be removed before use, and rust can be removed in combination with cold drawing process. ?
(2) Steel bar straightening can adopt mechanical or manual methods. Straightened steel bars should not have local bending, dead bending and small waves, and their surface scars should not reduce the cross section of steel bars by 5%. ?
(3) Steel bar cutting should be based on the number, diameter, length and quantity of steel bars, and the length should be matched. The long material should be cut first and then the short material should be cut, so as to minimize and shorten the short head of steel bars to save steel. ?
(4) The steel bar is hooked or bent:?
(1) steel hook. There are three forms, namely semi-circular hook, straight hook and inclined hook. After the steel bar is bent, the endothelial contraction, skin extension and axial length at the bend remain unchanged, and the bend forms an arc. The size after bending is not greater than the blanking size, so the bending adjustment value should be considered. ?
The bending center diameter of steel bar is 2.5d, and the straight part is 3d. The theoretical calculation value of reinforcement hook length increase is 6.25d for counter-rotating semi-circular hook, 3.5d for straight hook and 4.9d for oblique hook. ?
(2) Bending steel bar. The bending diameter d of the middle bend should not be less than 5 times the diameter of the steel bar. ?
③ Stirrups. The end of stirrups should be hooked, and the hook form should meet the design requirements. Stirrup adjustment, that is, the difference or sum of the increase length of the hook and the bending adjustment value, depends on the outer package size or inner package size of the stirrup. ?
(4) The blanking length of steel bar shall be specified according to the component size, the thickness of concrete protective layer, the adjustment value of steel bar bending and the increase length of hook. ?
Cutting length of straight steel bar = member length-protective layer thickness+hook increase length?
B blanking length of bending steel bar = straight bending length+oblique bending length-bending adjustment value+hook increase length?
C. Stirrup blanking length = stirrup inner diameter+stirrup adjustment value+hook increase length?
The elevation view of a building is an orthogonal view obtained by projecting different sides of the building onto a vertical projection plane. The building profile is an orthographic drawing obtained by cutting the building with a vertical section according to the cutting position and projection direction indicated on the building plan.
The building plan is a horizontal sectional view obtained by cutting horizontally above the window sill of the house, removing the upper part and using it for the orthographic projection of the rest. The construction drawing of a building project, referred to as "construction drawing" for short, is a drawing that shows the overall layout of the project, the external shape of the building, the internal layout, the structural structure, the internal and external decoration, the material method, the equipment and the construction requirements.
It mainly shows the appearance and modeling of the building, reflecting the form and position of the roof, doors and windows, balcony, awning and steps, the height of each part in the vertical direction of the building, the artistic modeling effect of the building and the external decoration practices. According to the complexity of building types, the number of building elevations is also different.
Generally, it can be divided into elevation, back elevation and side elevation. It can also be divided into south elevation, north elevation, east elevation and west elevation according to the building orientation. It can also be named after the axis number, which is especially suitable for buildings with complex plane shapes. In architecture, the building elevation is mainly used as the basis for the external decoration of the building.
References:
Baidu encyclopedia-rebar symbol