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19-20685
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19-20685
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Last modified
1/14/2020 6:57:15 AM
Creation date
1/14/2020 6:57:13 AM
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Building Department
Building Department - Doc Type
Permit
Permit #
19-20685
Building Department - Name
WITTIG,THOMAS P & AMY
Address
5142 8TH ST
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System Specifications <br /> MECHANICALLY ATTACHED TPO Revised March 2015 <br /> generator on the roof is recommended for greater flexibility. Mule-Hide requires <br /> the use,of automatic welding machines fbe all field shd6t seaming. Hand <br /> W011diho it Qhlly acceptable <br /> otabld for fl66hin§sdnd those seams where the <br /> automatic welder cannot.-not.be used. <br /> 2. Hand-held welding equipment is also available to weld membrane. After the <br /> preheated nozzle.tip is applii.pd in the overlap <br /> lap area.and the materia[starts. to <br /> soften; immediately follow with a silicone hand roller to press the heated <br /> membrane suff6ce s* together with slow,even movements. Keep the.roller within <br /> I inch of the nozzle tip. Angle the hot air tool so that the fl6Wirfg air faces the <br /> roller. Seam strength maybe tested when cool. F6tb6ttr.igtuits,.testing seams <br /> 8 hours after hot air welding is recommended. <br /> C. "r Joint Covers <br /> 1. For <br /> or 46rmil membrane and maximum warranty length of IS-years. Pay <br /> special attention to the'T"lap seams formed where the second perpendicular <br /> hailf=shedtb'vdrlaps the butt- ends of the field sheets. To ensure proper seaming <br /> of the"T'joints the top NiV6r of the H6qt-.VVeld Membrane is dr6aised.a minimum <br /> of one inch into the 16.W 61t or of membrane..by.using.a heat gun with.a-A-arrow <br /> or pencil nozzle and a rubber hand roller, <br /> By Inserting a heat gun nozzle <br /> between t,he layers of the membrane,. the.membrane will soften and.beg-in to flow <br /> a*fi o*wing it to'crease and sea.I completely after.applying,pressure with a hand <br /> roller to ensure adequate bonding of the softened material. After heat-sealing <br /> the,,r joint., Edge Sealant must be applied on all cut edges of reinforced <br /> mernbf6he. See detail MHT-UNA05A <br /> 2. For membrane thickness greater than 46-mil of Warranty length greater <br /> than i6-year'_.s: 'Separate"T"joint patches are required over all. ,,rjoints; See <br /> detail MHT-UNA0513 <br /> D. Seam Patches at Roof/Wall Transitions <br /> 1 Mule-Hide <br /> -Hide requires the installation of Non-Reinforced TPO Flashing Membrane <br /> P.Md ni that transitions from the horizontal:to the vertical. These <br /> patches over any sea <br /> patches' are to be constructed with Non-Reinforced TPO Flashing Membrane <br /> only and hot air welded. Refer to Mule-Hide DetailMHT-UN-405C. <br /> E. Daily Welding Equipment Setup <br /> 1. The roofing Contractor shall make sample test seams each day prior to welding <br /> field sea' ea s. The contractor shall, using scrap material, run at I" st two test <br /> seams. <br /> seams,,each a minimum of 2 feet long. Each test seam shall be Used to <br /> determine adequate seam strength and to ensure the equipment has Warmed.Up, <br /> is opetaiting proper and proper settings have been determined. This Should be <br /> done each time the equipment is turned on after a cool down period. <br /> F. Quality Control of Seams <br /> 1. After seaming,the seams are checked for integrity with a probe. Any openings <br /> or'.'fishmouths"are to be repaired with a hand-held hot air tool fitted with a <br /> narrow nozzle tip and with a roller. Each day the contractor Shall attempt to pull <br /> apart several sections of welded seams to test the quality of the welds.Should <br /> the welds be deficient,a more thorough-examination of the Work performed must <br /> be carded out and necessary repairs made. <br /> MULE-HIDE PRODUCTS CO.,INC 06-1111 Page 21 <br />
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