CONSTRUCTION FIXINGS
HECO-TOPIX-CC - The wood screw with tension for high loads
The requirements placed on timber construction are becoming ever greater. Trends such as combining slimline structures with high load transmissions place particularly great demands on fastening technology. Planners and tradespeople then face a tough choice over whether to use full or part threaded screws. Here HECO Schrauben GmbH & Co KG explains why its HECO-TOPIX-CombiConnect (HECO-TOPIX-CC) wood screw offers an intelligent solution.
T
he HECO-TOPIX-CC is a double-threaded screw with building supervisory authority approval, which brings a multitude of advantages in terms of cost effectiveness, calculation and assembly. It was developed especially
for the transfer of high tensile and compressive forces in timber construction and has a wide variety of applications. The load is transmitted axially via the thread, which allows for significantly higher tensile loads than conventional part threaded screws and enables the transfer of compressive loads. The two threads with different pitches
pull the components together upon insertion. In contrast to purely full threaded screws, construction measures such as the pre-stressing of components are unnecessary here. For tradespeople, this means quick and user-friendly application combined with considerable time savings. The HECO-TOPIX-CC recently obtained a European Technical Approval (ETA-12/0132) with confirmation of the ETA approval
Approval for Powers Europe
Powers Europe has obtained a European Technical Approval on nails for gas-actuated fastening (ETA-12/0188). This approval ensures high quality fastenings in steel and concrete for safety relevant applications, such as suspended ceilings.
of the attachment can cause immediate danger to human life. Powers Europe highlights that through the precise adjustment of nails and tools, it optimises the safety in fastening. Both nail types can be used in uncracked as well as in cracked concrete, with
T
pre-drilling not necessary. Depending on the required impact and the concrete strength, the user can choose between the Trak-It®
C4 and the Trak-It® C5. Powers Europe points
out that due to its exceptional power (150 Joules) the Trak-It® C4 can easily fasten nails in concrete with a strength of up to C50/C60, in accordance with the ETA. The Trak-It® C5
combines its lightweight with an impact of 112 Joules. This allows the end user to position the tool easily with less effort. Due to this the fastening is much more effective. This approval is valid for concrete strength classes C40 and C50 maximum.
100 Fastener + Fixing Magazine • Issue 78 November 2012 he ETA is only valid for Powers Trak-It® XH and HD nails in combination with gas-
actuated tools from Powers, respectively the Trak-It® C4 gas tool (XH and HD) and the Powers Trak-It® C5 gas tool (XH). These combinations, within the European Technical Approval, are very suited for safety relevant applications, where a failure
4.E14
also allowing HECO-TOPIX-T and HECO-TOPIX-CC screws to bear the CE mark. Following the ETA accreditation, the double threaded screw can be used in the installation of wooden elements in all load-bearing timber constructions such as in the creation of connections between main and auxiliary beams, transverse reinforcements, as well as doubling up or classic rafter purlin joints. A further advantage of the screw is its small cheese head,
which can be easily countersunk in wood, to a point where it is almost hidden, and also removed without a problem. Since the head has no countersink, the HECO-TOPIX-CC can be screwed in along the grain without splitting the wood. In combination with the HECO-TOPIX tip this enables the smallest of spaces to be left between screws. Since it can be completely countersunk in wood, the screw also meets fire protection requirements. Overall, HECO offers a versatile, user-friendly and economical
solution in the HECO-TOPIX-CC. It can be used in new constructions as well as to strengthen existing wood constructions. Depending on the application, the HECO-TOPIX-CC enables the use of smaller wood cross sections so that wood, as a natural resource, can be better utilised. To enable use in a wide range of applications the HECO-TOPIX-CC is available in the dimensions 6.5mm/8.5mm x 100mm - 400mm (ETA approval up to 350mm).
www.heco-schrauben.de
4.F10
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44 |
Page 45 |
Page 46 |
Page 47 |
Page 48 |
Page 49 |
Page 50 |
Page 51 |
Page 52 |
Page 53 |
Page 54 |
Page 55 |
Page 56 |
Page 57 |
Page 58 |
Page 59 |
Page 60 |
Page 61 |
Page 62 |
Page 63 |
Page 64 |
Page 65 |
Page 66 |
Page 67 |
Page 68 |
Page 69 |
Page 70 |
Page 71 |
Page 72 |
Page 73 |
Page 74 |
Page 75 |
Page 76 |
Page 77 |
Page 78 |
Page 79 |
Page 80 |
Page 81 |
Page 82 |
Page 83 |
Page 84 |
Page 85 |
Page 86 |
Page 87 |
Page 88 |
Page 89 |
Page 90 |
Page 91 |
Page 92 |
Page 93 |
Page 94 |
Page 95 |
Page 96 |
Page 97 |
Page 98 |
Page 99 |
Page 100 |
Page 101 |
Page 102 |
Page 103 |
Page 104 |
Page 105 |
Page 106 |
Page 107 |
Page 108 |
Page 109 |
Page 110 |
Page 111 |
Page 112 |
Page 113 |
Page 114 |
Page 115 |
Page 116 |
Page 117 |
Page 118 |
Page 119 |
Page 120 |
Page 121 |
Page 122 |
Page 123 |
Page 124 |
Page 125 |
Page 126 |
Page 127 |
Page 128 |
Page 129 |
Page 130 |
Page 131 |
Page 132 |
Page 133 |
Page 134 |
Page 135 |
Page 136 |
Page 137 |
Page 138 |
Page 139 |
Page 140 |
Page 141 |
Page 142 |
Page 143 |
Page 144 |
Page 145 |
Page 146 |
Page 147 |
Page 148 |
Page 149 |
Page 150 |
Page 151 |
Page 152 |
Page 153 |
Page 154 |
Page 155 |
Page 156