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X-Real-To: stagecraftlist [at] theatrical.net Received: by prxy.net (CommuniGate Pro PIPE 4.2.10) with PIPE id 31522384; Mon, 26 Jun 2006 03:01:51 -0700 X-Spam-Status: No, score=-3.5 required=5.0 tests=ADVANCE_FEE_1,AWL,BAYES_00, NO_RECEIVED,NO_RELAYS autolearn=ham version=3.1.3 X-Spam-Checker-Version: SpamAssassin 3.1.3 (2006-06-01) on localhost X-Spam-Level: X-ListServer: CommuniGate Pro LIST 4.2.10 List-Unsubscribe: List-ID: Message-ID: From: "Stagecraft" Sender: "Stagecraft" To: "Stagecraft" Precedence: list Subject: Stagecraft Digest #856 Date: Mon, 26 Jun 2006 03:01:22 -0700 MIME-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1" Content-Disposition: inline X-TFF-CGPSA-Version: 1.4 X-prxy-Spam-Filter: Scanned For info, archives & UNSUBSCRIBE, see --------------------------------------------------- Stagecraft Digest, Issue #856 1. Re: Source needed for large statue(s) by Steve Larson 2. lighting ladders by b Ricie 3. Re: lighting ladders by Bill Sapsis 4. Re: light ladders in house by "Salvatori, Jason" 5. Re: light ladders in house by "Jeffrey E. Salzberg" 6. Re: light ladders in house by Bill Sapsis 7. Re: light ladders in house by Bruce Purdy 8. Re: light ladders in house by "Salvatori, Jason" 9. Re: light ladders in house by Bill Sapsis 10. wanted: scrim to buy by Nikki 11. Re: light ladders in house by "Bill Conner" 12. Re: light ladders in house by Stephen Litterst 13. Re: World Cup big screen blown over by Clive Mitchell 14. Re: Air flow by Clive Mitchell 15. Re: Air flow by Mark O'Brien 16. Re: Air flow by Jerry Durand 17. Re: wanted: scrim to buy by Barney Simon 18. Re: Air flow by Clive Mitchell 19. Re: Air flow by "Jon Ares" 20. Re: World Cup big screen blown over by "Occy" 21. Re: Plastic pipe for compressed air (was Re: Air flow) by "Michael Powers" *** Please update the subject line of your reply to use the subject *** line of the message you are replying to! Please only reply to *** one message subject in each reply. ---------------------------------------------------------------------- Date: Sun, 25 Jun 2006 08:19:16 -0400 Subject: Re: Source needed for large statue(s) From: Steve Larson Message-ID: In-Reply-To: Try Mardi Gras Productions in New Orleans. Steve > From: Greg Williams > Reply-To: "Stagecraft" > Date: Sat, 24 Jun 2006 23:21:02 -0400 > To: "Stagecraft" > Subject: Source needed for large statue(s) > > For info, archives & UNSUBSCRIBE, see > --------------------------------------------------- > > An upcoming production will need something grand and larger than life > to bracket the entranceway... about 15' tall. Anyone have a source > for rental (or sales) shops that might have such items? > > Thanks in advance! > -=Greg Williams=- > www.LRLR.org ------------------------------ Message-ID: <20060625140712.50199.qmail [at] web50605.mail.yahoo.com> Date: Sun, 25 Jun 2006 07:07:12 -0700 (PDT) From: b Ricie Subject: lighting ladders In-Reply-To: So, are you saying the aluminum speed rail light ladders I saw in a house a few months back are not so good? They scared the living [at] #$% outta me when I saw them. >There are issues with light ladders that we've seen >over the years. >The >biggest problem is that many are made with cast iron >plumbing elbows >and >flanges. These fittings work great with plumbing but they suck for as >a >load bearing member in a light ladder. >I also love it when people anchor them to the wall >with those cute >little >blue plastic anchors you get at the big box stores. >We make custom light ladders. All steel, either >welded or bolted. >Bill S. Brian Rice 508-685-0716 b_ricie [at] yahoo.com "Blessed are the cracked: For it is they who let in the light." __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com ------------------------------ Date: Sun, 25 Jun 2006 10:15:05 -0400 Subject: Re: lighting ladders From: Bill Sapsis Message-ID: In-Reply-To: As well they should. Speed rail, the kind that use set screws, are a really common but bad idea. Those set screws aren't designed to hold up a bunch of lights. They're designed to hold railings together. Hence the name 'speed rail'. Bill S. ETCP Certified Rigger - Theatre www.sapsis-rigging.com 800.727.7471 267.278.4561 mobile Join the Long Reach Long Riders on their 3rd annual cross country charity motorcycle ride. On 6/25/06 10:07 AM, "b Ricie" wrote: > So, are you saying the aluminum speed rail light > ladders I saw in a house a few months back are not so > good? They scared the living [at] #$% outta me when I saw > them. ------------------------------ Subject: RE: light ladders in house Date: Sun, 25 Jun 2006 10:18:53 -0400 Message-ID: From: "Salvatori, Jason" > We make custom light ladders. All steel, either welded or bolted. A question for my education: Everyone here mentions that load-bearing things (like the light=20 ladders in the original post of this thread) should be steel.=20 Yet 90% of the truss, cheeseboroughs, pipe, etc. I see on gigs=20 today are aluminum. Would a light ladder made of aluminum pipe, cheesed together, and bolted on (with proper bolts etc.) be safe? Jason _________________________________________________________________________= _ This e-mail, including any attachment(s), may be confidential and is = intended solely for the attention and information of the named = addressee(s). If you are not the intended recipient or have received = this message in error, please notify me immediately by return e-mail and = permanently delete the original transmission from your computer, = including any attachment(s). Any unauthorized distribution, disclosure = or copying of this message and attachment(s) by anyone other than the = recipient is strictly prohibited. ------------------------------ Reply-To: From: "Jeffrey E. Salzberg" Subject: RE: light ladders in house Date: Sun, 25 Jun 2006 10:35:14 -0400 Message-ID: <008601c69864$92b513d0$6501a8c0 [at] Dell> In-Reply-To: > Would a light ladder made of aluminum=20 > pipe, cheesed together, and bolted on (with proper bolts=20 > etc.) be safe? People wiser and more knowledgeable than I will undoubtedly answer, but = my initial reaction is that a structure intended for a day's (or even a = week's) use differs greatly from one which is intended to be a permanent installation. ------------------------------ Date: Sun, 25 Jun 2006 10:38:45 -0400 Subject: Re: light ladders in house From: Bill Sapsis Message-ID: In-Reply-To: Sure. Except for the cheese part. Besides being ugly, most steel/cast cheeseboros are not load rated. And the aluminum ones have a wing nut attachment. That signifies to me that they are for temporary use. A lader made of an aluminum frame, welded together, would be fine. You just have to be more careful with the lighting fixture c-clamp bolts. You don't want to run a hole into the wall of the aluminum tube. Zat help? Bill S. ETCP Certified Rigger - Theatre www.sapsis-rigging.com 800.727.7471 267.278.4561 mobile Join the Long Reach Long Riders on their 3rd annual cross country charity motorcycle ride. On 6/25/06 10:18 AM, "Salvatori, Jason" wrote: > For info, archives & UNSUBSCRIBE, see > --------------------------------------------------- > >> We make custom light ladders. All steel, either welded or bolted. > > A question for my education: > Everyone here mentions that load-bearing things (like the light > ladders in the original post of this thread) should be steel. > Yet 90% of the truss, cheeseboroughs, pipe, etc. I see on gigs > today are aluminum. Would a light ladder made of aluminum > pipe, cheesed together, and bolted on (with proper bolts etc.) > be safe? > > Jason > > > > __________________________________________________________________________ > > This e-mail, including any attachment(s), may be confidential and is intended > solely for the attention and information of the named addressee(s). If you are > not the intended recipient or have received this message in error, please > notify me immediately by return e-mail and permanently delete the original > transmission from your computer, including any attachment(s). Any unauthorized > distribution, disclosure or copying of this message and attachment(s) by > anyone other than the recipient is strictly prohibited. ------------------------------ Date: Sun, 25 Jun 2006 11:06:24 -0400 Subject: Re: light ladders in house From: Bruce Purdy Message-ID: In-Reply-To: > Anybody got light ladders in the house (on the wall, above the seats) > that you can actually get to, climb, and hang and focus? Are all > these custom or is there an "off the shelf" version? Somebody I know > redoing the FOH in a 1960's institutional theatre. Thanks > We have a pair of Box Booms (5 rung ladders with a standing platform level with the second to bottom rung). They are are ONLY FOH positions, so they are in constant use, with 10 old Colortran ERS on each, plus an occasional special or two. They are welded steel contraptions that were custom built by a local metal fabricator, and bolted through the outside walls of the building. Access is by climbing a series of ladders up inside the hollow wall in front of the Proscenium, walking along a board, then climbing up onto the top of Cartouche (Decorative architectural false wall) and from there stepping up onto the platform. Bruce -- Bruce Purdy Technical Director The Smith Opera House ------------------------------ Subject: RE: light ladders in house Date: Sun, 25 Jun 2006 11:20:09 -0400 Message-ID: From: "Salvatori, Jason" >Sure. Except for the cheese part. Besides being ugly, most steel/cast >cheeseboros are not load rated. And the aluminum ones have a wing nut >attachment. That signifies to me that they are for temporary use. > >A lader made of an aluminum frame, welded together, would be fine. You = just >have to be more careful with the lighting fixture c-clamp bolts. You = don't >want to run a hole into the wall of the aluminum tube. >Zat help? >Bill S. Thanks it sure does.=20 The only question is that I have some Cheese that has 500KG SWL=20 stamped on them (and a hex nut, THEN a wing nut) These particular ones ARE load rated, right? Jason _________________________________________________________________________= _ This e-mail, including any attachment(s), may be confidential and is = intended solely for the attention and information of the named = addressee(s). If you are not the intended recipient or have received = this message in error, please notify me immediately by return e-mail and = permanently delete the original transmission from your computer, = including any attachment(s). Any unauthorized distribution, disclosure = or copying of this message and attachment(s) by anyone other than the = recipient is strictly prohibited. ------------------------------ Date: Sun, 25 Jun 2006 11:34:40 -0400 Subject: Re: light ladders in house From: Bill Sapsis Message-ID: In-Reply-To: A hex nut & a wing nut? Haven't seen that one. I'd check with the manufacturer. On 6/25/06 11:20 AM, "Salvatori, Jason" wrote: > Thanks it sure does. > The only question is that I have some Cheese that has 500KG SWL > stamped on them (and a hex nut, THEN a wing nut) These particular > ones ARE load rated, right? ------------------------------ Message-ID: <20060625170043.9530.qmail [at] web52709.mail.yahoo.com> Date: Sun, 25 Jun 2006 10:00:43 -0700 (PDT) From: Nikki Subject: wanted: scrim to buy Hello all-knowing list. I am working on a community theatre production of The Wizard of Oz in upstate NY and the director is having a hard time finding a scrim. Anyone have a suggestion of a company and/or website for me to point him to? He would like a black scrim approximately 10 feet wide by 25 feet long. Thanks for any help you can give me! ~Nikki Hilchey __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com ------------------------------ Message-ID: <029d01c6987c$d06deef0$6c01a8c0 [at] BCA1> Reply-To: "Bill Conner" From: "Bill Conner" Subject: Re: light ladders in house Date: Sun, 25 Jun 2006 12:28:45 -0500 In response to the original inquiry, generally these are best designed for the particular project or theatre and fabricated and installed by a miscellaneous metals contractor or a stage equipment contractor with those same skills and equipment. I prefer to notch them into the wall and install a landing or platform about every 8' vertically so that one can stand and access units on horizontal rails every 30" or so. The platform is then accessed by a ladder from catwalks above, through a door from behind, or, if no other option, from the audience floor. My observation is that leaning and reaching from a ladder is the hazard, not a simple straight climb and transfer onto a landing. Bill C. ASTC, ETCP CR-T ------------------------------ Date: Sun, 25 Jun 2006 18:55:06 -0400 (EDT) From: Stephen Litterst Subject: Re: light ladders in house In-reply-to: Message-id: <4119.172.169.209.48.1151276106.squirrel [at] icwebmail.ithaca.edu> References:

> For info, archives & UNSUBSCRIBE, see > --------------------------------------------------- > > A hex nut & a wing nut? Haven't seen that one. I'd check with the > manufacturer. I believe I have the same clamps, although mine have wing nut *then* hex nut. (The hex nut seems to serve as a safety for the wing nut). They're Half-couplers from Doughty. Steve L. ------------------------------ Message-ID: Date: Mon, 26 Jun 2006 00:13:19 +0100 From: Clive Mitchell Subject: Re: World Cup big screen blown over References:

In-Reply-To: In message , Bill Nelson writes >The monetary loss is likely to be far less than it could have been. >Apparently the LED cubes were not damaged. No idea how much it will >cost to replace the scaffolding. I bet the steel frame suffered some distortion in the impact of falling. I wonder if the modules slide in and out so easily now. If I was the owner of the display I'd be giving it a very thorough examination and labelling the modules as belonging to that particular incident in case of future issues. This is one of those situations where a standard reliable structure was subjected to unusually high winds and demonstrated that guy wires or angled braces might be worth considering in future. As far as saying that the public was in no danger because the video wall was designed to collapse backwards.... Bollocks. It collapses the way the wind blows it. -- Clive Mitchell http://www.bigclive.com ------------------------------ Message-ID: Date: Mon, 26 Jun 2006 02:31:35 +0100 From: Clive Mitchell Subject: Re: Air flow References:

In-Reply-To: In message , Bill Nelson writes >Not necessarily a comparable situation, the HVAC lines are relatively >small in diameter. Remember that, for any given schedule of tubing, the >pressure rating drops as the diameter is increased. In Industrial refrigeration plant the liquid lines are pretty much the size of standard copper water pipes. -- Clive Mitchell http://www.bigclive.com ------------------------------ Message-ID: <20060625190118.u7sw00cgogggo8kk [at] www.email.arizona.edu> Date: Sun, 25 Jun 2006 19:01:18 -0700 From: Mark O'Brien Cc: bigclive1 [at] ntlworld.com (Clive Mitchell) Subject: Re: Air flow References:

In-Reply-To: Quoting Clive Mitchell : > For info, archives & UNSUBSCRIBE, see > --------------------------------------------------- > > In message , Bill Nelson writes >> Not necessarily a comparable situation, the HVAC lines are >> relatively small in diameter. Remember that, for any given schedule >> of tubing, the pressure rating drops as the diameter is increased. > > In Industrial refrigeration plant the liquid lines are pretty much the > size of standard copper water pipes. > > -- > Clive Mitchell > http://www.bigclive.com As I recall, the joints to my HVAC system at my house were silver soldered. That would make a diffence, I think. Mark-O Mark O'Brien Opera Technical Director University of Arizona, School of Music 520-621-7025 520-591-1803 Mobile ------------------------------ Date: Sun, 25 Jun 2006 19:11:47 -0700 From: Jerry Durand Subject: Re: Air flow In-reply-to: Message-id: References:

On Jun 25, 2006, at 7:01 PM, Mark O'Brien wrote: > As I recall, the joints to my HVAC system at my house were silver > soldered. That > would make a diffence, I think. An now, most lead-free solder is silver solder. I have a couple of spools here (last I bought was around $45/pound). ------------------------------ Message-ID: <449F433A.7060603 [at] josephchansen.com> Date: Sun, 25 Jun 2006 22:15:22 -0400 From: Barney Simon Subject: Re: wanted: scrim to buy References: In-Reply-To: Nikki wrote: > He would like a black scrim approximately 10 feet wide by 25 feet long. We make and sell scrims every week... I am out of the office on Monday, but will work you up a price. When do you need it? -- Barney Simon JC Hansen Co., Inc Drapes Drops and Dance Floors 423 West 43rd Street, NYC 212-246-8055 F:212-246-8189 JCHansen.com 866-988-8055 ------------------------------ Message-ID: Date: Mon, 26 Jun 2006 03:51:27 +0100 From: Clive Mitchell Subject: Re: Air flow References:

In-Reply-To: In message , Mark O'Brien writes >As I recall, the joints to my HVAC system at my house were silver >soldered. That >would make a diffence, I think. Refrigeration lines are usually brazed with an oxy-acetylene torch. -- Clive Mitchell http://www.bigclive.com ------------------------------ Message-ID: <000d01c698cc$ada1f2e0$0600000a [at] BRUTUS> From: "Jon Ares" References:

Subject: Re: Air flow Date: Sun, 25 Jun 2006 20:00:27 -0700 > Refrigeration lines are usually brazed with an oxy-acetylene torch. I thought they were usually braised with a rue of red wine and shallots. - Jon Ares www.hevanet.com/acreative ------------------------------ Message-ID: From: "Occy" References:

Subject: Re: World Cup big screen blown over Date: Sun, 25 Jun 2006 21:40:25 -0700 So true Clive! ----- Original Message ----- From: "Clive Mitchell" > > In message , Bill Nelson writes > >The monetary loss is likely to be far less than it could have been. > >Apparently the LED cubes were not damaged. No idea how much it will > >cost to replace the scaffolding. > > I bet the steel frame suffered some distortion in the impact of falling. > I wonder if the modules slide in and out so easily now. If I was the > owner of the display I'd be giving it a very thorough examination and > labelling the modules as belonging to that particular incident in case > of future issues. > > This is one of those situations where a standard reliable structure was > subjected to unusually high winds and demonstrated that guy wires or > angled braces might be worth considering in future. > > As far as saying that the public was in no danger because the video wall > was designed to collapse backwards.... Bollocks. It collapses the way > the wind blows it. > > -- > Clive Mitchell > http://www.bigclive.com > ------------------------------ Message-ID: <58f67b0f0606252202vcbbf0c3h1187381e1343cd83 [at] mail.gmail.com> Date: Mon, 26 Jun 2006 00:02:49 -0500 From: "Michael Powers" Subject: Re: Plastic pipe for compressed air (was Re: Air flow) Michael Heinicke writes: <<......How do you feel about ABS plastic pipe in relation to condensing moisture in the line? I understand why metal will tend to do so faster, but how much of a difference is it really?>> Mike, How do I feel? Well, hey, I'm a guy, I don't have a "feel-about-it" gene, and if I did I wouldn't admit it and if I did admit it, I'd have to kill you. :-) As for the condensation issue, yes, you're right, metal will condense ambient moisture better than plastic. How much? I honestly can't tell you. However, that said, if I were to install a plastic system, I would place a dryer at the tank as well as water trap units at each air station. I would also be fastidious in the system design to assure drainage. Automatic drains would be installed at each drop leg as well as at the tank. Before the code change and the dissemination of the information as to why the change, I, like many others, used PVC extensively for pneumatic projects. My main use was specialty piping in a scenic unit including purpose built air tanks to be built into the scenic unit. Were I to build a new system today, I'd tend to go with copper, galvanized, plastic, black, in that order depending on the final equation of material cost, labor cost, labor skills, time available, etc. -- Michael Michael Powers Director of Operations Central Lighting & Equipment 1720 Fuller Rd. Suite 150 West Des Moines Iowa 50265 515-277-4190 877-977-4190 Fax 515-277-2295 515-557-0178 cell michael [at] clelights.com ------------------------------ End of Stagecraft Digest #856 *****************************