Ladder Plates
Ladder Plates
 |
 RCA 5U4GB Black Plate Tubes Mint NOS NIB U Pick 1 O or Harp Getter USA  US $48.00
|
 12AU7A RCA x8 Clear top tubes ALL tests NOS 1966 US $14.99
|
 NOS NIB 4 JAN GE Sylvania 12AT7WC and 1 JAN Sylvania 12AT7WA ECC81 US $13.99
|
 VOLUME CONTROL TO 12AX7 6SN7 ECC88 ECC82 ECC81 EL34 6V6 US $9.00
|
 1 New In Box Raytheon 12DT7 Special low noise microphonic 12AX7tube 17mmGrayP US $78.95
|
![2 matched 1956 57 RCA 6SN7GTB tubes Black Plates Side ] Getters](http://www.bakmytunes.com/images/e/360412468348_0.jpg) 2 matched 1956 57 RCA 6SN7GTB tubes Black Plates Side ] Getters US $65.95
|
![2 matched Late 1950s RCA 6SN7GTB tubes Black Plates Bottom ] Getters](http://www.bakmytunes.com/images/e/270859582207_0.jpg) 2 matched Late 1950s RCA 6SN7GTB tubes Black Plates Bottom ] Getters US $69.95
|
![2 matched 1958 59 RCA 6SN7GTB tubes Black Plates Bottom ] Getters](http://www.bakmytunes.com/images/e/360412465880_0.jpg) 2 matched 1958 59 RCA 6SN7GTB tubes Black Plates Bottom ] Getters US $59.95
|
![2 matched 1966 70 RCA 6SN7GTB tubes Black Ladder Plates Bottom ] Getter](http://www.bakmytunes.com/images/e/270859228940_0.jpg) 2 matched 1966 70 RCA 6SN7GTB tubes Black Ladder Plates Bottom ] Getter US $51.95
|
 2 matched 1963 GE 6SN7GTB tubes Grey Plates Side O Getter US $47.95
|
 1 RCA 12BH7A 12BH7 A tube Gray Plates O getter US $26.50
|
 1 1960s Raytheon 12DT7 Special low noise microphonic 12AX7 tube 17mm Black P US $67.95
|
 Tung Sol 12AY7 Long Plate Tubes Matched Pair Tested US $50.00
|
 RCA 6SN7GTB Tubes Matched Pair Tested US $65.00
|
 2 matched 1964 65 RCA 12AT7 WA 6201 tubes Black P O US $56.95
|
 Valvo 12AX7 ECC83 Rib Ladder Plate Tested Excellent US $67.00
|
 Raytheon JRP 12AU7 NOS Black Plate Matched Date Code Pair Amplitrex Tested US $39.95
|
 RCA 5963 12AU7 ECC82 17 mm Plate Tubes Matched Quad Tested Matched Codes US $52.00
|
 Raytheon 6SN7GT Tubes Matched Pair Tested 1950s US $38.00
|
 RCA 6SN7GT Tubes Matched Quad Tested 1950s US $120.00
|
 1950s GE 6SN7GTB Tubes Matched Quad Tested US $92.00
|
 Matsushita 12AX7 ECC83 Tubes Matched Pair Tested Matched Codes US $50.00
|
 Matsushita 12AU7 ECC82 Tubes Matched Pair Tested Matched Date Codes US $42.00
|
 Vintage General Electric 6SN7 Vacuum Tubes Tested New Old Stock US $27.95
|
 RCA 6SN7GTB Tubes Matched Quad Tested US $120.00
|
 RCA 12BH7A Tubes Matched Pair NOS NIB Tested US $90.00
|
 NOS 1 Sylvania 2 Sylvania JHS and 1 Philco Sylvania 12AX7 ECC83 US $21.99
|
 Valvo 12AX7 ECC83 Rib Ladder Plate Tested Excellent Delta Date Code US $69.00
|
 Valvo 12AX7 ECC83 Rib Ladder Plate Tested Excellent 1 US $67.00
|
 Three Same Lot 1962 RCA 12BH7A Twin Triode Amp Tubes for Hammond US $44.00
|
 GE 6L6GC Tubes 00 Getter USA Tested Strong Matched Pair Nice US $177.00
|
 Sylvania 6CG7 Vacuum Tubes Valves D Getter Flat Gray Plates US $80.00
|
 Valvo 12AX7 ECC83 Ladder Plate Pair Tested Excellent Delta Date Codes US $161.00
|
 RADIO VACUUM TUBES 6SN7GTB GE PR dual triode preamp audio stereo tuner ham swl US $54.99
|
 RADIO VACUUM TUBES 7B5 SYLVANIA LOKTAL PR pentode audio amp vintage phonograph US $13.99
|
 RADIO VACUUM TUBES 7A5 SYLVANIA LOKTAL PR tetrode audio amp vintage ham valve US $13.99
|
 RADIO VACUUM TUBES 6BH8 GE triode pentode preamp audio stereo tuner ham valve US $12.99
|
 RADIO VACUUM TUBES 6EB8 6GN8 GE triode pentode preamp audio stereo tuner ham US $13.99
|
 RADIO VACUUM TUBES 12BH7A GE triode dual preamp audio stereo jukebox organ ham US $29.99
|
 RADIO VACUUM TUBES 6GW8 ECL86 VIKING triode pentode preamp audio stereo ham US $37.99
|
 RADIO VACUUM TUBES 6C4 EC90 GE PR triode preamp audio stereo ham swl valve US $14.99
|
 RADIO VACUUM TUBES 12SN7GT HITACHI PR triode dual preamp audio stereo ham swl US $24.99
|
 RADIO VACUUM TUBES 12SN7GTA RCA PR triode dual preamp audio stereo ham swl US $29.99
|
 12AU7A RCA x10 Clear top tubes ALL tests NOS 1966 US $14.99
|
 2 matched 1957 Sylvania 12AT7 tubes Black P O getter US $40.95
|
 2 identical matched 1950s RCA 12AU7 tubes Blk PSq G US $42.50
|
 2 identical matched 1950 RCA 12AU7 tubes Black PD US $47.95
|
![New Old Stock One 1956 Tung Sol JTL 5751 WA tube 17mm Gray P Top ] Getter](http://www.bakmytunes.com/images/e/270957191945_0.jpg) New Old Stock One 1956 Tung Sol JTL 5751 WA tube 17mm Gray P Top ] Getter US $72.95
|
 2 matched RCA Clear Top 12AU7A 12AU7 A ECC82tubes US $34.95
|
 1 1970s GE 6SN7GTB 6SN7 GTB tube NOS NewInBox Gray PO US $31.99
|
 2 matched 1962 63 Sylvania 12AT7 ECC81 tubes Blk PO US $41.95
|
 2 matched 1956 Sylvania 12AT7 tubes Black P O getter US $42.95
|
 2 matched 1957 59 GE 6SN7GTB tubes Gray Plates SideD US $40.95
|
 2 matched 1956 58 GE 6SN7GTB tubes Gray Plates SideD US $36.95
|
 2 matched 1955 GE 6SN7GTB tubes Gray Plates SideD US $28.95
|
 2 matched 1960 61 GE 6SN7GTB tubes Gray Plates SideD US $43.50
|
 2 matched 1957 GE 6SN7GTB tubes Gray Plates SideD US $30.95
|
 2 matched NOS 1962 63 GE 6SN7GTB tube GrayPside O US $67.95
|
![PAIR 1954 Tung Sol 12AU7ECC82tubes Gray PlatesTop ] Getter83 94 91 107](http://www.bakmytunes.com/images/e/270935606237_0.jpg) PAIR 1954 Tung Sol 12AU7ECC82tubes Gray PlatesTop ] Getter83 94 91 107 US $36.95
|
 2 matched 1957 58 Tung Sol 12AU7A ECC82 tubes Gray PFat D 105 103 99 107 US $42.50
|
 2 matched 1958 Tung Sol 12AU7A ECC82 tubes Gray PFat D 105 109 113 120 US $45.95
|
 2 matched 1950s Tung Sol 12AU7 ECC82tubes Gray PlatesFat D 113 112107 114 US $55.95
|
 2 matched 1956 Tung Sol 12AU7 ECC82 tubes Gray PlatesFat D 98 94 96 96 US $46.95
|
![One 1959 Sylvania Gold Label JHS 6189 12AU7WA tube Black Ladder P3 MicaTop ]](http://www.bakmytunes.com/images/e/360442313780_0.jpg) One 1959 Sylvania Gold Label JHS 6189 12AU7WA tube Black Ladder P3 MicaTop ] US $38.95
|
 Pair 1959 Tung Sol JTL 5814 A tubes 17mmGLP2Mo US $47.95
|
 2 matched 1959 Tung Sol JTL 5814 A tubes 17mmGLP2Mo US $56.95
|
 2 matched 1959 Tung Sol JTL 5814 WA tubes 17mmGLP2Mo US $49.95
|
 2 matched 1959 Tung Sol JTL 5814 A tubes 17mmGLP2MO US $48.95
|
 2 matched 1959 Tung Sol 5814A 5814 A tubes 17mmGLP2MO US $57.95
|
 2 matched 1959 Tung Sol JTL 5814 WA tubes 17mmGLP2MO US $60.95
|
Scaffolding
Scaffolding refers to the temporary frame structures used to help workers during various construction works. Construction of a tall building requires scaffolds to support people during the work process. Moreover, scaffolds are also used to carry building materials like cements and paints etc. One of the main advantages of scaffolds is that it can be easily dismantled after usage. Scaffolds should be designed on a particular structure as per the structural and performance requirements of different works.
Materials
Scaffolds can be designed using various materials. However, metal pipes are the most commonly used materials in designing scaffolds. In the case of Asian countries, scaffolds are also designed using bamboo. Metal tubes, which are made up of steel or aluminium, are available in different lengths. The next major accessory used in scaffolding is called coupler. The primary use of couplers is to hold the metal tubes together. Materials like base plates, ropes, gin wheels, and boards are also used to form a scaffold.
Design
A typical scaffold is made up of metal tubes, ladders, and other fittings. The height and structure of a scaffold depends upon the working level of a building. Construction works on very tall buildings can be done with the help of swinging scaffolds. A swinging scaffold is made up of a plank, which is hanged from the top of a building with the help of a strong rope strip. The swinging scaffold is designed in a secure way to avoid slipping. This type of scaffold is widely used for exterior construction works in very tall buildings.
Scaffolds that are constructed from the ground level are called pole scaffold. However, the lower ends of pole scaffolds are not placed on the ground directly. They are placed on a base plate, which spreads the load. The vertical tubes in a pole scaffold transfer the entire mass to the base plate. If the ground surface, where the scaffold is placed, is a concrete surface then there is no need for a base plate. However, base plates are always recommended to ensure safety. Guard rails in a scaffold allow a worker to perform his task without the fear of falling down.
Uses
Scaffolds are primarily used for commercial construction purposes. However, residential constructions also need scaffolds in some cases. Proper knowledge of scaffolding helps even non-professionals to perform minor works like painting, repairing and maintenance works. People who don’t have proper knowledge in scaffold construction should seek the help of a professional worker before constructing any scaffold.
About the Author
Joanna is a well renowned Polish Journalist specialising in Polish, Russian and English translation services. She has been residing in th UK for 3 years where she has made her home among the Polish community in Tooting, South West London.
http://www.balhambuilder.co.uk