p02_r07 listed on qpl 60 per section 501 or grea
donegdot_plan_649084f395824aaebf1f5ed48132696f_p02_r07_listed_on_qpl_60_per_section_501_or_grea
Notes1 object · 1 measurement · 12 notes
This crop is a block of specification notes concerning steel diaphragms as an alternative to concrete diaphragms in the superstructure design. It specifies design criteria (wind load, strength limit state), material and hardware standards (ASTM specifications for bolts, nuts, washers, galvanizing), fabrication qualification requirements, and contractual/administrative requirements (shop drawing submittal, bid item inclusion). No graphical elements, dimensions, or drawn objects are shown—only text notes.
Objects · 1
| Object | Material | Note |
|---|---|---|
| Diaphragm | structural steel (alternative) / concrete (as shown in plans) | Steel diaphragms may be substituted for concrete diaphragms at contractor's option, subject to design and material requirements stated in the note. |
Measurements · 1
| Measurement | Value | Unit | Applies to |
|---|---|---|---|
| three second gust wind speed | 140 | MPH | steel diaphragm design |
Notes
- STEEL DIAPHRAGMS - AT CONTRACTOR'S OPTION, STEEL DIAPHRAGMS MAY BE USED IN LIEU OF THE CONCRETE DIAPHRAGMS SHOWN IN THE PLANS.
- AT A MINIMUM, STEEL DIAPHRAGMS ARE TO BE DESIGNED AT STRENGTH LIMIT STATE III WITH A THREE SECOND GUST WIND SPEED OF 140MPH APPLIED TO ONE HALF OF THE VERTICAL SURFACE AREA OF THE EXPOSED BEAM USING EXPOSURE CATEGORY D.
- CROSS FRAME CONFIGURATIONS SHALL HAVE A HORIZONTAL ANGLE OR CHANNEL AT EITHER THE TOP OR BOTTOM POSITION.
- STEEL DIAPHRAGMS SHALL BE MANUFACTURED BY A FABRICATOR LISTED ON QPL 60 PER SECTION 501 OR GREATER STEEL.
- ALL COMPONENTS OF THE STEEL DIAPHRAGM SHALL BE GALVANIZED ACCORDING TO ASTM A123.
- CONNECTION BOLTS SHALL CONFORM TO ASTM F3125 (GRADE A325).
- NUTS SHALL CONFORM TO ASTM A563.
- WASHERS SHALL CONFORM TO ASTM F436.
- ALL HARDWARE SHALL BE GALVANIZED ACCORDING TO ASTM A153.
- STABILITY OF THE BEAMS AND STRUCTURE DURING ALL PHASES OF CONSTRUCTION ARE THE SOLE RESPONSIBILITY OF THE CONTRACTOR.
- SUBMIT SHOP DRAWINGS AND CALCULATIONS FOR THE STEEL DIAPHRAGMS TO THE ENGINEER FOR REVIEW AND ACCEPTANCE.
- THE USE OF STEEL DIAPHRAGMS SHALL BE INCLUDED IN THE PRICE BID FOR "LUMP-SUPESTR CONCRETE."
anthropic/claude-sonnet-5 · 3924 tokens · 14.8s