Telescopic Prop Systems | Ayarlanabilir Dikmeli Sistem Döşeme Kalıbı

SCAFFOLDING SYSTEMS

Cup-lock Type Scaffolding System

Exterior Scaffolding System

H Type Below-Beam Scaffolding System

Flanged Type Scaffolding System

TELESCOPIC PROP SYSTEMS

Adjustable Prop System Laying Formwork

FORMWORK SYSTEMS

Plywood Surfaced Column - Wall Formwork

Modular System Formworks

Sheet curling and Frame Wooden Panel

Pan Laying Formwork

SPECIAL PRODUCTIONS

Bulk and Freight Containers

Special Products

Adjustable Prop System Laying Formwork

Advantages of Scaffolding System

It is light; Due to its easy mounting and demounting process, it speeds up the construction site works. Its storage and stowage is effortless. It is conveniently usable for all types of laying types.

It is economic; The project’s formwork cost is fixed by decreasing and narrowing formwork materials according to formwork load. Therefore, the required amount of formwork materials is used. Since the carrying capacities of parts that form the PORTİPROP system are high, swift and easy installation is ensured with fewer parts.

Adjustable; PORTİPROP props can be readily adjusted depending on the variable floor heights of the project. Due its adaptation to every height conveniently, it is cheaper and faster than any conventional formwork. It provides easy circulation in various plans and projects because of being formed by fewer parts. It is much more durable and less costly than the conventional system, which is also called black formwork.

Parts that form the System;

Adjustable Prop

Pipes; Outer pipe is made of TSE Certificated ø 60x2,5 mm standard pipe and inner pipe is made of ø 48x3 mm TSE Certificated standard pipe. The pipes are of Borusan, Yücel and Noksel brand. All pipes are subjected to pressure experiments. The wall thickness of all pipes is identical.

Mechanism; It is made of ø 60x4 mm pipe and prevents nut being stripped.

Nut; High quality is ensured by nodular cast iron and bears C€ certificate.

Drilling; The drilling process is performed by special type of drill without causing any deformation. It does not create weak sections like press does since drilling process is made by special drill in every 10 cm. All our adjustable props are subjected to mechanicals tests at KOSGEB laboratories and their safety carrying capacity is certified as 25kN (2,5 ton).

Base plate; It is made of 5 mm plate and 150x150 mm in size. In order to prevent plate’s edges being folded under load, the plate is formed in a special way.

Welding; Since the manufacturing is carried out by robots without human touch with automatic gas metal arc welding machinery, the labor errors are prevented in circular welding process, which is the most difficult welding type.

                                     Prop 300                      Prop 350                     Prop 400                      Prop 450
                            Adjustment Interval   Adjustment Interval         Adjustment Interval     Adjustment Interval
                                 180 - 300 cm              210 - 350 cm                   230 - 400 cm               270 - 450 cm

2. Four-Way Head

In case H20 is used as the Main carrier (Ridge), they prevent H20’s collapse.

They are placed on the ends and connection sections of the main carrier girders.

They provide placing of single H20 on one direction and double H20 on the other.

They are manufactured as Piped and Adjustable types.

3. U Head

The main carrier ensures the support of H20 or 10x10 girders in between. When the formwork is under load, it avoids prop being released from the carrier girder.

4. Tripod

It ensures prop remain erected and fixed during formwork installation.

5.Girder Head

It is developed to support the small girders or carriers propped up as consoles.

APPLICATION

Calculation Sample of Laying Formwork

The Accepted Values;
   Laying Concrete Thickness: d= 20 cm
   Clear Height: h= 280 cm
   Main Carrier (Ridge ): H20 Wooden Girder
   Auxiliary Carrier (Grid): 10x10 Wooden
   Formwork Surface: 18 mm Plywood

Determination of Calculation Load According to DIN 4421;

Fixed Load:
Formwork Load: g= 0,40 kN/m²
Concrete Load: b= 26 kN/m³ x 0,20 m = 5,2 kN/m²

Movable Load:
20% of the Fixed load is taken as movable load and
11,5 < p < 5,0 kN/m² is stipulated.
Since p= 5,2 kN/m² x 20% = 1,05 kN/m² < 1,5,
p= 1,5 kN/m² will be taken.

The Total Calculation Load per m²
Q=g+b+p = 0,40 kN/m² + 5,2 kN/m² + 1,5 kN/m² = 7,1 kN/m²

1.Load Area on a Single Prop:

    An adjustable ø 60 prop has a maximum carrying capacity of 25 kN.
    Load on a Single Prop; F=q x A 25kN = 7,1 kN/m² x A
    From here the maximum load area is found as A= 3,5m².
    Taking the carrying capacity of the auxiliary props into consideration, the Sizes can be chosen as 2,00 m x 1,50 m (b x c).

2. Interval a of the Auxiliary Carrier (Grid) (Backrest distance for Plywood)

    The clearance of the auxiliary carrier should be determined according to laying thickness and the type of plywood to be used.
    According to the chosen plywood, the amount of clearance of the auxiliary carrier to open is determined from the plywood deflection graphic.
    For example, when the clearance of the auxiliary carrier is chosen 50 cm, 21 mm plywood will give 0,7 mm deflection.
    The load that a grid can carry is; q= 7,1 kN/m² x 0,50m = 3,55 kN/m.
    If 10x10 timber is used as the grid, maximum carrying capacity is maxM=2,7 kNm , maximum shear force is V= 5,9 kN.
    A simple girder calculation with single clearance is made for the auxiliary carriers; (max.M = q x L² / 8) (max.V= q x L / 2)
    Shear force verification according to the chosen length;
    Since M= 3,55 kN/m x 2,00² / 8 = 1,78 kNm < 2,7 kNm, it is adequate.
    Shear force verification according to the chosen length;
    Since V= 3,55 kN/m x 2,20m / 2 = 4,0 kN < 5,9 kN, it is adequate.

3.Interval b of the Auxiliary Carrier (Grid) (Backrest distance for Auxiliary Carrier)

    Mahyalar seçilen ızgara açıklığından yük alırlar.
    Mahyaya gelen yük ; q= 7,1 kN/m² x 2,00m = 14,2 kN/m olmaktadır.
    Mahya olarak H20 kullanılırsa , (max.M = q x L² / 8) ve (max.V= q x L / 2) den
    max taşıma kapasitesi maxM= 5,0 kNm , max. kesme kuvveti V= 11,0 kN dur.
   Buradan ana taşıyıcı boyu L = 1,67m çıkar.Seçilen L= 1,50m (Ana taşıyıcı mesnetlenme açıklığı=Dikme aralığı)
    Seçilen boya göre kesme kuvveti tahkiki
    V= 14,2 kN/m x 1,50m / 2 = 10,6 kN < 11,0 kN olduğundan yeterlidir.

Telescopic Prop Carrying Capacities